УНИВЕРСАЛЬНЫЙ ДАТЧИК ВЫСОКОГО НАПРЯЖЕНИЯ

В последнее время в электротехнике на высоких напряжения 6-35 кВ широко используют стационарные индикаторы, обеспечивающие безопасность и оперативность в работе обслуживающего персонала. Предлагается для использования универсальный датчик высокого напряжения (УДВН) со световым индикатором. У датчика небольшие габариты, небольшой вес, низкая стоимость изготовления. Основу УДВН составляет емкость, выполненная на основе термоусадочной изоляции. Датчик легко монтируется на шинах и подключенных кабелях высокого напряжения.

МНОГОФУНКЦИОНАЛЬНЫЙ ПИКОВЫЙ ДЕТЕКТОР

Изобретение относится к измерительной технике и может быть использовано для детектирования одиночных коротких импульсов на фоне синфазных помех и электромагнитных наводок и преобразования выделенной амплитуды в медленно меняющееся напряжение или во временной интервал. Техническими результатами являются повышение быстродействия и помехозащищенности от синфазных и низкочастотных дифференциальных помех, расширение функциональных возможностей. Многофункциональный пиковый детектор содержит источник импульсного сигнала, дифференциальный усилитель, неинвертирующий повторитель напряжения, первый и второй компараторы напряжения, логический элемент И, первый, второй, третий и четвертый диоды, первый, второй и третий конденсаторы, первый, второй и третий резисторы, положительную шину питания, резистивный делитель напряжения, неинвертирующий вход смещения нуля дифференциального усилителя. 4 ил.

Способ оценки степени саморазряда электрохимического накопителя энергии

Spannungsprüfer

Instrument to detect buried cables and the like, carrying electricity, has a pen-shaped housing with a bright red LED tip and a press button to change the sensibility between high and low voltages

The instrument to detect a flow of electricity without contact, where the alternating current supplies are 12-1000 V, has a pen-shaped housing of impact and breakage resistant acrylonitrile butadiene styrene (ABS). The tip (1) is a bright red LED. A push button (2) converts the sensibility from 120-1000 V to give reactions to low voltages from 12 V.

Test device for revealing live conductor and polarity - has hand-held indicator unit requiring only one application of test prod. to determine voltage presence and direction

A device for determining the voltage relationship and polarity of a network conductor w.r.t. the system voltage comprises a test prod. (c) and two cup=on contacts (A,B) contacts (A,B) are connected to points which are at full system potential and test prod. (c) is applied to the conductor under test. By observing the indicator elements (4,5) e.g. Lamps or Led's a conductor potential can be identified as (a) close to system potential (A) when element (S) is lit or (b) close to potential (B) when element (4) is lit. optional link (15) with Led (IT) indicates DC system polarity or presence of AC. USE/ADVANTAGE - For situations where large number of network checks required. Requires only a single test to determine polarity of any conductor. Convenient and timesaving.

DI-Schutzschalteinrichtung

ANORDNUNG ZUR ANZEIGE FUER EIN ELEKTRISCHES UNTERWERK.

HOCHSPANNUNGSSUCHGERAET FUER WECHSELSPANNUNGEN

Spannungssucher fuer Hochspannungs-Freiluftanlagen

Einrichtung zur Pruefung der elektrischen Festigkeit von Haengeisolatoren im Betriebszustand

Einrichtung zum Nachweis hoher elektrischer Spannungen

Illuminating safety glove

A fault tracing device for use with low voltage electrical circuits

... 738,192. Current and voltage detectors; fault testing. DEVELOPMENT, MANUFACTURE & TRADE CO., Ltd. May 11, 1954. [Feb. 26, 1953], No. 5371/53. Class 37. A device for tracing faults in a low voltage earth return electrical circuit (e.g. that of a road vehicle) comprises a pointed conductive probe 2 mounted in the end of an insulating plastic body 1 (which may be apertured or transparent) containing a festoon filament lamp 8 held by a coil spring between the end of the probe and a disc 14 at the other end of the body, which is connected over a cable 13 passing through helical spring sheath 15 and apertured metal screw or push fitted cap 6 to a spring clip 16. The Provisional Specification describes modifications in which the body is of metal and the conductors are mounted insulatedly therein, and in which a screw-cap bulb is mounted in a holder within the body.

Miniature handheld audio signal detector and meter

TESTING ELECTRICAL CONTINUITY AND DETECTING VOLTAGE SOURCES

A hand held device for testing electrical continuity and detecting voltage sources comprises a voltage source (2), an LED indicator (4) a transistor (1), a probe (8) and a contact terminal (6) connected and arranged as shown. In use, the probe (8) is applied to a circuit to be tested and the user's body closes the circuit between the circuit to be tested and the contact terminal (6), such that if the circuit to be tested comprises electrical continuity or a voltage source, a voltage is applied to the semiconductor control (1) which turns on causing illumination of the LED. ...

Voltage sensor

A sensor arrangement for checking whether a conductor (not shown) is live comprises a sensor (20) for sensing the presence of a voltage and means IC1b for inhibiting output at an LED (1) if the sensed voltage is below a predetermined voltage. A relaxation oscillator IC1C provides test signals to the sensor 20 to test the operation of the arrangement. ...

Power fail detection circuit

A power fail detection circuit in electrically powered apparatus comprises a power switch for the apparatus and power detection means responsive to the absence of electrical power from the power switch to provide a power fail indication. The power switch has at least one double throw pole, switchable between power-ON and power-OFF terminals, and the circuit includes switch position detection means connected to the power-OFF terminal and which is responsive to the power switch being in the power-OFF position to disable the power fail indication.

POWER FAIL DETECTION CIRCUIT

Improvements in electric pressure detectors

... 519,919. Electrification detectors. MEACHER, W. April 6, 1939, No. 10695. [Class 37] An electrification detector of the air condenser or vacuum tube type is provided with one or more embedded metallic conductors external to the primary element of the condenser but not in contact with this element or with one another, these conductors being extended lengthwise so as to come under the influence of the hand of the operator, but insulated therefrom. A detector of the condenser type is shown in Fig. 1. An insulating casing A has a central bore in which is in serted a metal tube B having at its outer end a metal point C. Embedded in the insulating casing A in the neighbourhooc of the tube B are concentric conductors D, E formed o metal foil When the detector is held in the hand at the lower end sparks occur if the point C is brought near a high tension conductor, the coatings D, E forming a capacitative connection through the hand o the operaor to earth. In a modification a vacuum tube F Fig.

A device for monitoring and storing the status of supply voltages

VOLTAGE DETECTION

SUBSCRIVER TERMINAL-MULTIPLEX TELECOMMUNICATIONS SYSTEMS

... 1329955 Party line system SIEMENS AG 29 July 1971 [31 July 1970] 35704/71 Heading H4K A single line pair serves two subscribers Tln1, Tln2 who are connected to a subscriber circuit TM and an exchange circuit AM is provided in the exchange to give a termination for each subscriber. In order to test the system from a central measuring station it is necessary to provide circuits AU, TU by-passing the exchange and subscriber circuits respectively. The by-pass circuit is arranged to be operated only when neither subscriber is busy. The individual subscribers instruments can be selected for testing by causing a break in the normally applied D.C. voltage or reversing the polarity of the applied D.C. voltage. In the arrangement shown relays A1, A2 in the exchange circuit are controlled by voltage detectors which effectively introduce a delay action so the relay contacts a1,a21 do not follow the voltage breaks caused by dialling pulses. The relay having contact b cannot be energized while either ...

VOLTAGE CHECKING DEVICE

... 1503140 Voltage monitoring NIPPON KOGAKU KK 28 Jan 1975 [28 Jan 1974] 34953/77 Divided out of 1502434 Heading G1U A voltage monitoring threshold circuit powered solely by the source of the voltage being monitored is characterized in that if the voltage being monitored exceeds a threshold level a lamp is energized whereas if it falls short of the threshold level a resistance equal to the resistance of the lamp is connected into circuit, whereby the load on the source of the voltage being monitored is maintained substantially constant. The particular description is identical to that in parent Specification 1502434, which is referred to.

DEAD LINE INDICATOR

Electronic circuits comprising voltage detectors

Improvements in and relating to devices for indicating the presence of potential in electrical apparatus

... 830,073. Switchgear structures. ENGLISH ELECTRIC CO. Ltd. June 22, 1956 [June 22, 1955], No. 18025/55. Class 38 (5). [Also in Group XXXVI] To guard against incorrect earthing of a bus-bar or incoming cable in metal-clad switchgear, including a circuit-breaker having an earthing function, indicating means indicate the presence of a live conductor and testing means are provided to test the indicating means. In Fig. 1, three high voltage phase conductors 1 are carried through a partition 3 of a three-phase switchgear unit by condenser bushings 2 incorporating plural conducting layers, a selected one of which is connected at each tapping 5 to a make-before-break jack 6 into which a neon bulb 4 is inserted to indicate by glow the presence of voltage on the appropriate conductor. To test for correct indication, a voltage transformer 9 is connected by switch 8 to a tapping 7 of each conducting layer to produce a glow in the neon lamps. In a modification (Fig. 2, not shown), the test voltage is ...

VOLTAGE PROBE FOR THE MEASUREMENT OF INTERFERENCE VOLTAGE

... 1524793 Voltage-measuring probe BBC BROWN BOVERI & CO Ltd 11 March 1977 [15 March 1976] 10471/77 Heading G1U A voltage probe for selectively measuring interference voltages which are balanced or unbalanced with respect to earth comprises two transformers Tr 1 , Tr 2 with annular ferrite cores, the secondaries S 1 , S 2 each being connected to measuring apparatus and the primary P 2 being connected between earth and a centre tapping of primary P 1 , so that a balanced voltage applied across P 1 produces a voltage in secondary S 1 only; whereas an unbalanced voltage, one pole of which is earthed and the other of which is connected to both ends of P 1 , produces a voltage in secondary S 2 only, since the opposite current-flows in the two halves of P 1 produce cancelling magnetic fluxes.

Detection Circuitry

Voltage and continuity detection circuitry includes a set of terminals 12, 14, 16 for electrically coupling to another apparatus such as an electricity meter 40. The set of terminals comprises a sensing input terminal 16, a power output terminal 12 and a reference voltage terminal 14. The reference voltage and power output terminals may be a single combined terminal (22, figure 4). The detection circuitry includes a power supply unit (PSU) for supplying electrical current to the power output terminal and a voltage sensor for detecting a potential difference between the sensing input terminal and the reference voltage. The detection circuitry has a voltage detection mode in which it detects a voltage supplied by the meter; it also has a continuity detection mode in which it detects continuity between terminals 12, 16. The voltage sensor provides a binary digital output 17 which is used to control a domestic appliance such as a car charger 51. The circuitry may detect an output of the meter ...

A monitoring device for an at least partially electrically operated motor vehicle

A monitoring device 10 for an at least partially electric vehicle comprises: a housing 14 arranged on the vehicle to accept high voltage input connections 22a, 22b; an access door 16 to provide access to a user interface; an electric circuit, for monitoring the presence of high voltage provided by the high voltage input connections; and a high voltage interlock protection circuit provided in the housing. A microcontroller controls the monitoring circuit, the high voltage interlock, and an indication on the user interface to display when high voltage is present. The access door may have a door switch to break continuity in the interlock when the door is opened. There may be first and second monitoring circuits for high voltage. If the first circuit indicates no voltage, the second circuit may be activated to confirm this. The absence of high voltage may thus be ensured before e.g. maintenance on the vehicle.

HOCHSPANNUNGSBLINKER

HOCHPSANNUNGSBLINKER

Determining the electrical connection

Um in einem Messsystem (2) auf einfache Weise zweifelsfrei festzustellen, ob Messkontakte (3), an denen eine Spannungsmessung durchgeführt werden soll, ordnungsgemäß kontaktiert wurde, entlädt sich im Messsystem (2) nach Schließen eines Entladeschalters (S1), welcher eine Ladeschaltung (5) mit einem Spannungsmessgerät (V) verbindet, die Ladeschaltung (5) über einen Innenwiderstand (Ri) des Spannungsmessgeräts (U). Bei geschlossenem Entladeschalter (S1) wird einem Schließen eines Messschalters (S2), welcher das Spannungsmessgerät (V) mit den Messkontakten (3) verbindet, die Kontaktierung des elektrischen Systems (1) mit dem Messsystem (2) bestimmt, indem der Spannungsverlauf (U) am Spannungsmessgerät (V) ab Schließen des Messschalters (S2) ausgewertet wird. Vorteilhafterweise entlädt sich die Ladeschaltung (5) nach Schließen des Entladeschalters (S1) über einen zum Spannungsmessgerät (V) in Serie oder parallel geschalteten Entladewiderstand (R) und den Innenwiderstand (Ri).

Determining the electrical connection

Um in einem Messsystem (2) auf einfache Weise zweifelsfrei festzustellen, ob Messkontakte (3), an denen eine Spannungsmessung durchgeführt werden soll, ordnungsgemäß kontaktiert wurde, entlädt sich im Messsystem (2) nach Schließen eines Entladeschalters (S1), welcher eine Ladeschaltung (5) mit einem Spannungsmessgerät (V) verbindet, die Ladeschaltung (5) über einen Innenwiderstand (Ri) des Spannungsmessgeräts (U). Bei geschlossenem Entladeschalter (S1) wird einem Schließen eines Messschalters (S2), welcher das Spannungsmessgerät (V) mit den Messkontakten (3) verbindet, die Kontaktierung des elektrischen Systems (1) mit dem Messsystem (2) bestimmt, indem der Spannungsverlauf (U) am Spannungsmessgerät (V) ab Schließen des Messschalters (S2) ausgewertet wird. Vorteilhafterweise entlädt sich die Ladeschaltung (5) nach Schließen des Entladeschalters (S1) über einen zum Spannungsmessgerät (V) in Serie oder parallel geschalteten Entladewiderstand (R) und den Innenwiderstand (Ri).

ARRANGEMENT FOR DIELECTRIC TEST.

Circuit with an electrical noble gas control fluorescent lamp.

DEVICE AND PROCEDURE FOR THE REGULATION UNSTRESSEDNESS FROM POLYPHASE CONDUCTIONS

Device to alternating voltage control

VOLTAGE INDICATION APPARATUS

VOLTAGE PICK-UP CIRCUIT AND FLASHING DISPLAY FOR HIGH VOLTAGE INDICATOR DEVICE AND INPUT ELECTRODE THEREFOR

Three-phase detection module

Industrial plug with extraction of magnetic energy therein

The invention relates to an industrial plug with energy extraction, comprising a power cable and an energy extraction device (506, 507, 801, 802, 1001) such as that presented in figure 10/11. This plug has a wide range of uses covering the fields of georeferencing, localisation, lighting, identification, monitoring of variables, ...

CONTINUOUSLY REGULATED PRECISION PRESSURE FLUID DELIVERY SYSTEM

A fluid flow characteristic regulator (58) which provides a variable volume flow path in which a fluid flow can be continuously adjusted by a control fluid (57) to regulate at least one fluid flow characteristic of the fluid flow (11) within the variable volume flow path.

TEST POINT MOUNTED CIRCUIT CONDITION INDICATOR

Case 790314 TEST POINT MOUNTED CIRCUIT CONDITION INDICATOR Edmund O. Schweitzer Indicating devices for mounting on a test point in an alternating current distribution system provide a visual indication of either voltage level or fault occurrence in the system. The indicating devices are contained in a housing which includes an electrically-conductive rubber outer shell adapted to snap-fit over the test point, and a non-conductive inner housing within which the indicating devices are contained. The indicating devices include a bridge-type rectifier which is coupled to a conductor of the system through the test point terminal, and to ground through the electrically-conductive outer shell. In a voltage indicator application, the rectifier circuit charges a capacitor across which a neon lamp visible through a window in the end of the housing is connected the rate at which the neon lamp flashes providing an indication of the voltage level on the conductor. In a fault indicator application, the ...

PORTABLE DEVICES TO DETERMINE IF A HIGH OR VERY HIGH A.C. VOLTAGE INSTALLATION IS LIVE OR DEAD

Abrégé Perfectionnement aux dispositifs portatifs de vérification d'absence de tension sur des installations à haute et très haute tension alternative. Un dispositif portatif unipolaire de vérification d'absence de tension sur des installations à haute et très haute tension alternative à seuil de fonctionnement variable mais déterminé comprenant une sonde conductrice , un blindage protecteur , des moyens avertisseurs qui fonctionnent lorsque la tension d'exploitation dépasse ledit seuil et comportant un étage redresseur transformant une fraction de la tension alternative en tension sensiblement continue qui est comparée à un seuil variable mais déterminé.

METHOD AND CIRCUIT FOR EVALUATING AN ANALOG VOLTAGE

LINE CARD LOSS OF BATTERY DETECTOR

A line card circuit to prevent false off-hook signals resulting from the permanent loss of battery voltage at a line card. In the battery present condi- tion, the 5V operating voltage is connected to the col- lector lead of an NPN transistor, which also supplies the output signal of the system. The emitter lead of the transistor is connected to ground. The -48V bat- tery voltage is connected to the transistor base lead and biases the base negative with respect to the emit- ter, maintaining the 5V logic "1" output signal on the collector lead. There is a resistor and capacitor in series, forming an RC circuit, across the 5V collector lead and the -48V base lead. In the battery present condition, there is a significant charge across the capacitor. In the battery absent condition, the -48V battery voltage is lost and the voltage on the base lead rises to a positive voltage in a time interval governed by the discharge time of the RC circuit, thus causing the system output signal to drop to ...

APPARATUS AND METHOD FOR DETECTING THE ABSENCE OF VOLTAGE

Electrical voltage detection circuit and methods for determining the presence or absence of voltage in electrical equipment. An isolated power supply provides power to one or more voltage detection devices configured to detect voltage on one or more busses of electrical equipment. A switch is configured to provide supply voltage from the isolated power supply to the one or more busses of electrical equipment when the switch is closed. The voltage detection devices may determine if the one or more busses of electrical equipment are de-energized by detecting the voltage on the busses when the switch is open. The integrity of the electrical equipment may be verified by detecting, with the voltage detection devices, the voltage on the busses when the switch is closed, where the expected voltage readings are based on voltages being provided to one or more busses by the isolated power supply.

METHOD AND APPARATUS FOR DISCRIMINATION OF SOURCES IN STRAY VOLTAGE DETECTION

A method and apparatus for discriminating between electric field sources. In one embodiment, the apparatus comprises a mobile detection system comprising a sensor probe for remotely measuring an electric field generated by an electric field source in a patrolled area; and a processor, coupled to the sensor probe, for processing data received from the sensor probe to generate a first field strength and at least a second field strength for determining whether the electric field source is potentially hazardous.

CONSTRUCTIVE SYSTEM REGARDING A CAPACITIVE VOLTAGE SENSOR

A constructive system regarding a capacitance electric voltage sensor comprises a source electrode (110, 210), a shielding tubular body (120, 220), an electric field sensor (130, 230) and a mass of dielectric insulating material (140, 240). The electric field sensor (130, 230) comprises at least one first inner sheet (131, 231) and a second outer sheet (132, 232) superimposed and joined together, wherein said first inner sheet (131, 231) is made by means of a conductive metal material, wherein said second outer sheet (132, 232) is made by means of an electrically insulating material, and wherein said second outer sheet (132, 232) made of insulating material is constrained with respect to the inner face (124, 224) of the shielding tubular element (120, 220).

CURRENT SENSING ALARM ARRANGEMENT FOR MONITORING THE PRESENCE OF HIGH VOLTAGE

LOAD TESTING APPARATUS

A load testing apparatus includes a resistive unit that includes resistor groups having a plurality of resistors and is connected with a power source to be tested for a load test. A cooling fan that cools the resistors in the resistive unit is provided. A control unit is provided. The resistive unit is provided with a current/voltage detection part that detects a current flowing through the resistors and a temperature detection part that detects an exhaust temperature at a downstream of the resistive unit. A rotation state detection part that detects a rotation state of the cooling fan is provided in the cooling fan. The control unit performs off control that stops power supply from the power source to be tested to the resistive unit based on information from the current/voltage detection part, information from the temperature detection part, and information from the rotation state detection part.

Voltmeter.

Spannungsprüfer.

Verfahren zur Ermittlung des Spannungszustandes in Hochspannungsanlagen.

Elektrischer Spannungsanzeiger.

Vorrichtung zum Anzeigen von Wechselspannungen.

Appareil permettant de constater si une ligne électrique est sous tension.

Spannungsanzeigevorrichtung für mit hochgespanntem Wechselstrom betriebene Bahnfahrzeuge.

Als Tascheninstrument ausgebildeter elektrischer Spannungsmesser.

Prüfvorrichtung für elektrische Viehhüteanlagen

Taschenvoltmeter.

Vorrichtung mit einem photo-leitfähigen und einem mit diesem elektrisch in Reihe geschalteten elektrolumineszierenden Teil

Spannungsanzeiger.

Dispositif pour éprouver les isolateurs défectueux des lignes électriques et indiquer les fuites qui s'y produisent.

Elektrisches Prüfgerät

Vorrichtung zur Anzeige eines Stromes in einem Leiter

Prüfgerät für elektrische Anlagen, insbesondere solche von Kraftfahrzeugen

Spannungsanzeiger in Steckerform zum Anzeigen des Spannungszustandes einer elektrischen Leitung.

Lampe électrique témoin ou de contrôle à gaz rare.

Schraubenzieher.

Elektrisches Prüfgerät

Gerät zum Prüfen des richtigen Anschlusses von Steckdosen und Steckkupplungen an eine elektrische Einphasen-Dreileiter-Installation

Dispositif avertisseur de protection contre des surtensions pour appareils électro-ménagers bitension

Vorrichtung zum Nachweis von elektrischen Spannungen

Test detection of AC or DC voltage - uses optical basic instrument and is designed for voltages below 250

The basic instrument is designed as a portable hand tool and comprises two light-emitting diodes (2, 3) of different colours in an anti-parallel connection. One end of the anti-parallel connection is connected to a first terminal pole (1) and the other end to further terminal poles (12-14) of the basic instrument via measuring range resistors. The basic instrument consists of a tube (17) which comprises a front section (16) and an end section (18) sealing off the tube (17) in front and rear. The two sections (16, 18) are made of insulating material. Alternatively the tube (17) and the two sections (16, 18) are made of plastic.

Einrichtung zur Funktionskontrolle bei einem Teilnehmeranschluss-Multiplex-System

Multiple use electronic test probe - comprises hand held probe with luminescent diode giving voltage level indications

A hand held probe contains an electronic tester with a high impedance input which permits potentials to be measured with respect to a reference. The reference is generally earth potential and indications are given by illumination or extinction of lamps. The probe comprises a metallic tube (1) which surrounds a large part of the plastic body (2) of the probe. At one end are two housings (4, 5) containing a red (6) and green (7) luminescent diode respectively. These are controlled by a battery (9) driven electronic circuit comprising a Darlington coupled transistor amplifier for each diode. A three pole switch (10) operated by a knob (12) attached to its shaft (11) selects the voltage levels at which the amplifiers operate to control the diodes in response to a voltage on the pick-up pin (13).

Appareil indicateur de haute tension alternative

Hochspannungsprüfgerät

Hochspannungsprüfgerät zum Prüfen von elektrischen Leitern

Tragbares Gerät zur Anzeige und akustischen Meldung von Hochspannungen

Hochspannungsprüfgerät mit akustischer Anzeige

Elektrisches Wechselspannungsprüfgerät

Hochspannungsprüfgerät für elektrische Wechselspannungen

Détecteur de tension

Dispositif de détection pour vérifier si un élément d'une installation électrique est sous tension

Appareil pour vérifier si un conducteur électrique est sous tension

Détecteur de tension

Verfahren und Vorrichtung zur Wechselspannungskontrolle

Anordnung zur Anzeige einer elektrischen Messspannung mittels eines sich zwischen zwei Elektroden flächig erstreckenden Anzeige-Mediums

Schaltungsanordnung zur phasenabhängigen Anzeige einer Wechselspannung

Hochspannungsprüfer

Détecteur de tensions électriques alternatives

Einpolig betätigbarer Spannungsprüfer

Einrichtung zum Nachweisen elektrischer Wechselspannungen

Hochspannungsprüfgerät

Стенд для демонстрации опасности воздействия шагового напряжения на организм человека

Предлагаемая полезная модель относится к области электротехники и предназначена для учебной демонстрации опасности воздействия шагового напряжения на организм человека.Стенд для демонстрации опасности воздействия шагового напряжения на организм человека может работать в сети передачи данных, включающей в себя следующие компоненты:модуль беспроводной передачи данных WiFi стенда для демонстрации опасности воздействия шагового напряжения на организм человека; центральный коммуникационный узел, оснащенный модулем беспроводной связи WiFi и способный обрабатывать данные модуля беспроводной передачи данных, полученные по WEB-протоколу; конечные пользовательские устройства, оснащенные WEB-браузером и модулем беспроводной передачи данных WiFi, например персональные компьютеры, планшетные компьютеры или смартфоны.Техническим результатом при реализации заявленного решения выступает повышение функциональных возможностей за счет представления пользователю информации о наличии опасного для человека шагового напряжения Uили напряжения прикосновения U, а также величин Uи Uпосредством беспроводной сети WiFi . 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 196 307 U1 (51) МПК G01R 19/155 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК G01R 19/155 (2019.08) (21)(22) Заявка: 2019132268, 11.10.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.02.2020 (45) Опубликовано: 25.02.2020 Бюл. № 6 1 9 6 3 0 7 R U (56) Список документов, цитированных в отчете о поиске: RU 123171 U1, 20.12.2012. RU 121594 U1, 27.10.2012. RU 119120 U1, 10.08.2012. RU 2482502 C1, 20.05.2013. ЛАБОРАТОРНЫЙ ПРАКТИКУМ ПО ТЕХНОСФЕРНОЙ БЕЗОПАСНОСТИ Федеральное государственное бюджетное образовательное учреждение ВЫСШЕГО ПРОФЕССИОНАЛЬНОГО ОБРАЗОВАНИЯ "Омский государственный технический университет", 2012. US 20090309573 A1, 17.12.2009. (54) Стенд для демонстрации опасности воздействия шагового напряжения на организм человека (57) Реферат ...

Method for examining a state of an electric circuit of a motor vehicle

A method for examining a state of an electric circuit of a motor vehicle, in particular a motor vehicle with an electric engine, is described. First, a state for the circuit is requested. Then, it is checked whether the requested state is actually set, by measuring with a measuring device of the motor vehicle a current value for a variable related to the circuit and comparing with a control unit of the motor vehicle the current value with values for the variable specified for the requested state of the circuit. If the control unit determines that the requested state for the circuit is set, this information is displayed. A motor vehicle for carrying out the method is also described.

ELECTRO-OPTIC EFFECT BASED OPTICAL VOLTAGE TRANSFORMER

An electro-optic effect based optical voltage transformer comprises an optical voltage sensor head and an electrical unit, wherein the electrical unit comprises an optical closed-loop feedback control unit and a signal processing unit, the optical closed-loop feedback control unit is connected to the optical voltage sensor head and the optical voltage sensor head is connected to the signal processing unit. In this invention, the light source output power is more stable, the light source center wavelength drift is effectively controlled and the output power coastdown caused by light source aging is prevented; the optical power fluctuation of the optical polarization caused by factors such as temperature, optical fiber vibration, etc., is eliminated, which is conductive to stability and reliability of the optical system; the accuracy of data is improved. 1. An electro-optic effect based optical voltage transformer , comprising:an optical voltage sensor head; and the optical closed-loop feedback control unit is connected to the optical voltage sensor head by optical fiber and the optical voltage sensor head is connected to the signal processing unit by optical fiber;', 'the optical closed-loop feedback control unit provides a light source with stable output power, and this stable light source is transmitted to the optical voltage sensor head by optical fiber; and', 'the signal processing unit processes the optical signal detected and output by the optical voltage sensor head and demodulates the measured voltage., 'an electrical unit including an optical closed-loop feedback control unit and a signal processing unit, wherein2. The electro-optic effect based optical voltage transformer according to claim 1 , wherein:the optical voltage sensor head comprises a first optical fiber collimator, a polarizer , a ¼ wave plate, a BGO crystal, an analyzer, a second optical fiber collimator and a third optical fiber collimator;{'b': 1', '4, 'the first optical fiber collimator is ...

Method and apparatus for detecting a zero-voltage condition across four quadrant switches

A method and apparatus for detecting a zero-voltage condition. In one embodiment, the method comprises generating a first current that is proportional to a voltage across a four-quadrant (4Q) switch; generating a reference current, wherein the reference current is equal to a value of the first current when of the voltage across the 4Q switch is at a predefined value; comparing the first current to the reference current; and generating an indication of a zero-voltage condition across the 4Q switch when the first current is less than the reference current.

System and method to provide talking feature and interactive voice menu in phasing meters

A high voltage detection device comprises a probe comprising an electrode for sensing a high voltage electrical line. The electrode is connected in series with a resistor. A meter comprises a housing enclosing a control for measuring parameters of line voltage. The control comprises an input module for connection to the probe to develop a voltage signal. A signal processing module receives the voltage signal and determines parameters of line voltage and drives an audio module. The audio module provides an audio output representing the determined parameters of line voltage.

Test of a testing device for determining a voltage state of a high-voltage vehicle electrical system

A method for testing a testing device for determining a voltage state of an on-board high-voltage electrical system of a motor vehicle includes establishing a predetermined voltage state in the on-board high-voltage electrical system by supplying a test voltage to the on-board high-voltage electrical system and determining the voltage state with the testing device and comparing the determined voltage state with the predetermined voltage state This ensures that, before maintenance work on the on-board high-voltage electrical system is performed, a voltage-free state of the on-board high-voltage electrical system determined by the testing device is actually present, thereby eliminating risk to maintenance personnel due to an accidentally applied voltage.

NON-CONTACT, HAND-HELD VOLTAGE DETECTOR

A non-contact, hand-held voltage detector is used to determine if AC voltage is present in a tamper-resistant receptacle. The voltage detector includes a pair of pins to open both shutters of the tamper-resistant receptacle. 1. A device for determining whether AC voltage is present in a tamper-resistant receptacle having a pair of shutters therein , said device comprising:a voltage detector having a non-conductive housing which defines a centerline, a conductive contact extending from said housing, and a non-conductive cap attached to said housing and covering said contact, said cap terminating in a pin covering an end portion of said contact; anda safety extension provided on said cap, said safety extension having an arm extending parallel to, but offset from, said pin, said arm and said pin being capable of being inserted into the tamper-resistant receptacle to open the shutters of the tamper-resistant receptacle.2. The device of claim 1 , wherein said contact is offset from said centerline.3. The device of claim 1 , wherein said safety extension is integrally formed with said cap.4. The device of claim 3 , wherein said cap includes a conical wall extending from said housing claim 3 , said pin extending from said wall.5. The device of claim 3 , wherein said arm is thinner than said pin.6. The device of claim 1 , wherein said arm is thinner than said pin.7. The device of claim 1 , wherein safety extension is formed as a separate member from said cap and is attached to said cap.8. The device of claim 7 , wherein said safety extension is formed from a frame portion which conforms in shape to a portion of said cap claim 7 , said arm extending outwardly from said frame portion claim 7 , and a plurality of spaced apart hooks extending distally from said frame portion.9. The device of claim 8 , wherein said cap includes a wall extending from said housing claim 8 , said pin extending from said wall claim 8 , and a flange extending outwardly from said wall claim 8 , said ...

System including a magnetoelectric device for powering a load or visually indicating an energized power bus

A system includes a power bus, a capacitive divider and a magnetoelectric device. The capacitive divider includes a first capacitance element electrically connected in series with a second capacitance element. The first capacitance element is electrically interconnected with the power bus. The second capacitance element is electrically connected between the first capacitance element and ground. The capacitive divider causes a current to flow between the power bus and the ground when the power bus is energized. The current generates a magnetic field. The magnetoelectric device includes an input inputting the magnetic field and an output outputting a voltage. An indicator or a load is driven by the voltage of the output of the magnetoelectric device.

Two-Step Self-Test Circuit for Microcontroller Unit and Antenna

A system is disclosed. The system includes an antenna and a processor. The processor has at least four ports: a first input port coupled to a first portion of the continuity component; a first output port coupled in series to a first resistor coupled to the first portion of the antenna and to ground via a second resistor; a second output port coupled through a third resistor to the first portion of the antenna; and a second input port coupled to a second portion of the antenna and through a fourth resistor to ground. The processor is operable to activate and deactivate the appropriate ports to put the processor in one of three operating modes: an AC detection mode, an AC self-test mode, and a continuity test mode. 1. A system , comprising:an antenna having a first portion and a second portion; and a first input port coupled to the first portion of the antenna;', 'a first output port coupled in series to a first resistor coupled to the first portion of the antenna and to ground via a second resistor; and', 'a second output port coupled through a third resistor to the second portion of the antenna., 'a processor having2. The system of claim 1 , wherein when the processor is in an AC detection mode claim 1 , the first input port is active and the first output port and second output port are inactive.3. The system of claim 1 , wherein when the processor is in an AC self-test mode claim 1 , the first input port and the first output port are both active claim 1 , while the second output port is inactive.4. The system of claim 3 , wherein an alternating voltage is placed on the first output port.5. The system of claim 4 , wherein the first input port detects the presence of the alternating voltage.6. The system of claim 4 , wherein the first input port fails to detect the presence of an alternating voltage a self-test failed is indicated.7. The system of claim 1 , wherein when the processor is in a continuity test mode claim 1 , the first input port and second output port ...

SYSTEM AND METHOD FOR MONITORING VOLTAGE IN A CABLE

A sensor device for detecting voltage in a conductor cable includes a sense electrode to be disposed over a surface of the conductor cable to cover a sense region having a sense axial width and a sense circumferential length and a reference electrode to be disposed over the surface of the conductor cable to cover a reference region. The reference region has an axial position adjacent the axial position of the sense region and has a reference circumferential length greater than the sense circumferential length. The sensor device further includes a charge measurement circuit connected in series between the sense electrode and the reference electrode to measure a charge measurement and circuitry to compare the charge measurement to a threshold to detect a presence of the voltage in the conductor cable. 1. A method for detecting voltage in a conductor cable , the method comprising:detecting a first signal using a first charge measurement circuit connected in series between a reference electrode and a first electrode, the first electrode disposed over a surface of the conductor cable to cover a first region having a first axial width and a first circumferential length, the reference electrode disposed over the surface of the conductor cable to cover a reference region, the reference region having an axial position adjacent the axial position of the first region and having a reference circumferential length greater than the first circumferential length; andcomparing with a circuitry the first signal to a threshold to detect the presence of the voltage in the conductor cable.2. The method of claim 1 , wherein comparing the first signal to a threshold includes applying the voltage to a voltage comparator with a fixed reference.3. The method of claim 1 , wherein comparing the first signal to a threshold includes converting the first signal using an analog to digital converter to provide a first digital signal and comparing the first digital signal using a processor.4. The ...

Indicators For Safe Disconnection Of Electrical Circuits

Provided are devices for electrical connectors to provide indication that the electrical connectors are not energized. Devices include a first indicator that includes a first indication technology that is configured to provide a first visual indication corresponding to a voltage of a primary conductor and a second indicator that includes a second indication technology that is different from the first indication technology and that is configured to provide a second visual indication corresponding to the voltage of the primary conductor. 1. A device for an electrical connector , the device comprising:a driving circuit that is parasitically coupled to a primary conductor in the electrical connector; andan indicator that includes an indication technology and that is electrically coupled to the driving circuit, the indicator being configured to provide a visual indication corresponding to a voltage of the primary conductor.2. The device according to claim 1 , wherein the indicator comprises a first indicator claim 1 , the indication technology comprises a first indication technology claim 1 , and the visual indication comprises a first visual indication claim 1 , andwherein the device further comprises a second indicator that includes a second indication technology and that is electrically coupled to the driving circuit, second indicator being configured to provide a second visual indication corresponding to the voltage of the primary conductor.3. The device according to claim 2 , wherein the first indication technology is different from the second indication technology.4. The device according to claim 3 ,wherein the first indication technology comprises an illumination technology that is configured to selectively emit light responsive to the voltage of the primary conductor being at an operating voltage, andwherein the second indication technology comprises an occlusion technology that is configured to selectively occlude a high visibility surface responsive to the ...

LOAD CURRENT SENSING AT LOW OUTPUT VOLTAGE

A device includes a first transistor coupled to an input voltage source and to an output voltage node and an amplifier comprising a first input, a second input, and an output. The device also includes a second transistor coupled to the input voltage source and the first input of the amplifier and a third transistor coupled to the second transistor and a ground node. The third transistor includes a control terminal coupled to the output of the amplifier. The device also includes a first voltage-controlled voltage source coupled to a control terminal of the first transistor and a control terminal of the second transistor and a second voltage-controlled voltage source coupled to the first transistor and the second input of the amplifier. 1. A device , comprising:a first transistor coupled to an input voltage source and to an output voltage node;an amplifier comprising a first input, a second input, and an output;a second transistor coupled to the input voltage source and the first input of the amplifier;a third transistor coupled to the second transistor and a ground node, wherein the third transistor comprises a control terminal coupled to the output of the amplifier;a first voltage-controlled voltage source coupled to a control terminal of the first transistor and a control terminal of the second transistor; anda second voltage-controlled voltage source coupled to the first transistor and the second input of the amplifier.2. The device of wherein the first voltage-controlled voltage source further comprises:a first resistor coupled to the control terminal of the first transistor and the control terminal of the second transistor;a first voltage-controlled current source coupled to the input voltage source and to a first side of the first resistor; anda second voltage-controlled current source coupled to a second side of the first resistor and to the ground node.3. The device of wherein the first and second voltage-controlled current sources are configured to:generate ...

CONTACT VOLTAGE DETECTION SYSTEM AND METHOD

An electrical safety system and associated method may be used on an electrical enclosure containing phase to phase and phase to ground electricity. The system includes a volt meter having a probe and a receptacle having a number of ports adapted to receive the probe of the volt meter. The receptacle is mounted to a panel, cabinet or enclosure having at least one conducting wire therein. The method allows a worker to use a contact voltage detector to check for the presence or absence of voltage inside the closed electrical panel. 1. An electrical safety monitoring system for testing voltage being carried in lines L , L , Land GRND of a three-phase connection within an enclosure having a panel , the system comprising;{'sub': 1', '2', '3, 'a receptacle mounted to the panel of the enclosure, each of the lines L, L, Land GRND being coupled to the receptacle;'}{'sub': 1', '2', '3, 'a first, a second, a third and a fourth port in the receptacle being associated with the L, L, Land GRND lines, respectively, to provide access to the associated line from an exterior of the enclosure via the respective port; and'}{'sub': 1', '2', '3, 'a volt meter having at least two probes selectively inserted into the receptacle and through any two of the first, second, third and fourth ports from outside of the enclosure for direct electrical connection with two of the lines L, L, Land GRND associated with the respective ports to measure voltage therein and thereby provide an indication to a user of active voltage within the three-phase connection in the enclosure and without opening the enclosure.'}2. The safety monitoring system of further comprising:a cover for selectively covering the ports in the receptacle from an exterior of the enclosure.3. The safety monitoring system of further comprising:a lock selectively coupled to the cover to secure the cover in a closed position relative to the ports of the receptacle.4. The safety monitoring system of further comprising:an indicator mounted ...

Active Cable with Display

An apparatus comprises a cable including conductors to carry data signals and a power voltage from a device when the cable is connected to the device, and at least one active display assembly fixed along a length of the cable. The active display assembly includes a power converter connected to the conductors to convert the power voltage to a supply voltage, and a programmable display and a controller powered by the power converter. The programmable display is configured to display programmed indicia responsive to the supply voltage, and the controller is configured to program the display. 1. An apparatus comprising:a cable including conductors to carry data signals and a power voltage from a device when the cable is connected to the device; and a power converter connected to the conductors and configured to convert the power voltage to a supply voltage; and', 'a display configured to display programmed indicia responsive to the supply voltage., 'at least one active display assembly, fixed along a length of the cable, and including2. The apparatus of claim 1 , wherein the active display assembly further includes:a controller connected to the supply voltage and configured to program the display to display the indicia.3. The apparatus of claim 2 , wherein the controller is further configured to:receive a program data message from the device via the data signals, wherein the program data message identifies alphanumeric indicia with which to program the display; andprogram the display to display the alphanumeric indicia.4. The apparatus of claim 3 , wherein the indicia includes one of a network device port identifier and a cable identifier.5. The apparatus of claim 3 , wherein the controller is further configured to program the display to periodically flash the indicia ON and OFF responsive to a beacon data message from the device.6. The apparatus of claim 3 , wherein the controller is further configured to:send a self-identification data message to the device via the ...

DEVICE FOR PROCESSING CABLES

A device for processing—particularly stripping insulation, cutting, contacting, fitting-out, connecting, measuring or checking—a cable that has at least one insulated electrical conductor includes a metal tool movable relative to the cable and a measuring device by which contact with the electrical conductor by the tool is detectable. The tool is connected with a first electrode body movable relative to a second electrode body so that through the two electrode bodies, which bodies are separated from one another by an air gap or an insulating material, a coupling capacitor is formed, by which the metal tool is or can be coupled to the measuring device, to an alternating voltage source or to an electrical potential. 1. A device for processing a cable having at least one insulated electrical conductor , the device including a tool movable relative to the cable and a measuring device for detecting contact with the conductor by the tool , comprising:a first electrode body connected with the tool; anda second electrode body, the first electrode body being movable relative to the second electrode body wherein the first and second electrode bodies are separated from one another by an air gap or an insulation material to form a coupling capacitor by which the tool is coupled to the measuring device, to an alternating voltage source or to an electric potential.2. The device according to wherein the measuring device is constructed to perform one of:a) measurement of changes in a capacitance of the tool which arise when the tool comes into contact with the conductor;b) monitoring an alternating voltage signal generated by the alternating voltage source and coupled into the conductor at a first position and decoupled from the conductor at a second position and which signal is fed to the measuring device, wherein when the tool makes contact with the conductor, the conductor is connected with the electrical potential by the coupling capacitor; andc) monitoring an alternating ...

NON-CONTACT DETECTOR

A detector detects the presence of a charged object due to a static or DC voltage source The detector includes a sensor positioned in an electric field emanating from the DC voltage source A sensor signal is processed by a processor and, when the DC voltage source is detected, the processor produces an alert signal to warn a user of a potentially hazardous situation. 1. A non-contact detector adapted to detect and warn a user of the presence of an object charged by a DC voltage source , the detector including:a housing, adapted to be hand held by the user to be positioned proximal to, but without contacting, the object; a sensor plate adapted to sense said electric waves emanating from the DC voltage source; and,', 'a shutter disposed proximal to the sensor, adapted to periodically impede said electric field waves being received on said sensor plate, the shutter including a circular disc having at least one opening therein;, 'a sensor within said housing, said sensor configured to sense an electric field emanating from the object and generate a sensor signal indicative of the strength of any sensed electric field waves, the sensor includinga motor adapted to operate said shutter to thereby periodically substantially block said sensor plate from sensing said electric field emanating from said DC voltage source, such that, as said shutter rotates, the electric field emanating from the DC voltage source is periodically permitted to pass through said opening(s) such that said sensor plate periodically accumulates charge and subsequently discharges to thereby generate said sensor signal;a controller, adapted to control a periodic operation of the shutter and/or sensor plate;a processor within said housing, adapted to receive said sensor signal from said sensor, and produce an alert signal indicative of the magnitude of the sensed electric field; andan alert indicator on said housing, adapted to provide an indication to the user of the magnitude of the charge on the ...

DEAD FRONT CONNECTOR HAVING A VOLTAGE INDICATOR

A dead front connector including a housing, an electrical coupling configured to electrically connect a power cable to a device, and an indicator located on the housing. The dead front connector further including a voltage testing circuit configured to test a voltage between the power cable and the device and illuminate the indicator when the voltage is above a predetermined threshold. 1. A dead front connector comprising:a housing;an electrical coupling configured to electrically connect a power cable to a device;an indicator located on the housing; anda voltage testing circuit configured to test a voltage between the power cable and the device and illuminate the indicator when the voltage is above a predetermined threshold.2. The dead front connector of claim 1 , wherein the housing includes an insulation layer.3. The dead front connector of claim 1 , wherein the housing includes a conductive shield.4. The dead front connector of claim 1 , wherein the housing includes a grounded shield.5. The dead front connector of claim 1 , further comprising a voltage tap.6. The dead front connector of claim 5 , wherein the voltage testing circuit is permanently affixed to the voltage tap.7. The dead front connector of claim 5 , wherein the voltage testing circuit is selectively removable from the voltage tap.8. The dead front connector of claim 1 , wherein the voltage testing circuit includes:a test input for receiving the voltage;a first capacitor electrically coupled to the input;a diode electrically coupled to the first capacitor;a switch electrically coupled to the diode;the indicator electrically coupled to the switch; anda second capacitor electrically coupled in a parallel-type connection to the first capacitor, the diode, the switch, and the indicator.9. The dead front connector of claim 8 , wherein the first capacitor claim 8 , the diode claim 8 , the switch claim 8 , and the indicator are connected in an electrical series-type connection.10. The dead front connector ...

Absence of Voltage Detector

An absence of voltage indicator has an isolation circuit, an FM modulator attached to the isolation circuit, a reference oscillator, and a mixer attached to the reference oscillator and the FM modulator, wherein the output of the mixer is the difference of the two signals. In one embodiment, the FM modulator includes a variable capacitor which varies in response to a voltage in parallel to a fixed capacitor and an inductor in parallel to the capacitors. 1providing a capacitor charged to a known voltage;providing a high value resistor connecting the powerline to ground;discharging the capacitor via the powerline; andmeasuring the decay time of the capacitor.. A method for testing the continuity of a device to a power line comprising: This application is a continuation of U.S. patent application Ser. No. 16/480,346, filed on Jul. 24, 2019, which issued as U.S. Pat. No. 11,162,983 on Nov. 2, 2021, and claims priority to International Patent Application Serial No. PCT/2018/017391, filed Feb. 2, 2018, and U.S. Provisional Application No. 62/457,213, filed Feb. 10, 2017, the subject matter of which is hereby incorporated by reference in its entirety.The present invention relates generally to voltage detection and more specifically to a detector for detecting and indicating the absence of voltage.Prior to performing work on electrical installation/equipment, workers are required to verify that the equipment is in an electrically safe state. Until proven otherwise, one must assume that the equipment is energized and take all necessary precautions, including utilizing appropriate personal protective equipment (PPE). One part of the verification of an electrically safe work condition involves a test for the absence of voltage. This test is performed by a trained and qualified electrician using an adequately rated voltage tester, usually a portable voltmeter or multimeter. The electrician first tests the meter on a known, energized source to ensure it is working properly. He/ ...

METHODS AND APPARATUS FOR DETECTING A VOLTAGE OF A STIMULUS SIGNAL OF A CONDUCTED ELECTRICAL WEAPON

Methods and apparatus for detecting a magnitude of a voltage at a face of a conducted electrical weapon (“CEW”). The magnitude of the voltage may be used to determine whether a pulse of a stimulus signal was delivered to a target. Structures for detecting the magnitude of the voltage may include structures that provide a stimulus voltage. 1. A conducted electrical weapon (“CEW”) for providing a current through a human or animal target for impeding locomotion of a target , the CEW comprising:a processing circuit;a memory;an electrode;a signal generator, the signal generator provides a stimulus signal via the electrode for impeding locomotion of a target; detects a magnitude of the divided voltage;', 'records the magnitude of the divided voltage in the memory., 'a voltage divider, the voltage divider divides a magnitude of a voltage of the stimulus signal; wherein the processing circuit2. The conducted electrical weapon of wherein the processor:calculates the magnitude of the voltage of the stimulus signal;in accordance with the magnitude of the voltage of the stimulus signal determines at least one of whether the stimulus signal arced across the face of the CEW and whether arced to establish an electrical connection with the target.3. The conducted electrical weapon of wherein the processor further records the magnitude of the voltage of the stimulus signal in the memory.4. The conducted electrical weapon of wherein the processor in accordance with the magnitude of the divided voltage determines at least one of whether the stimulus signal arced across the face of the CEW and arced to establish an electrical connection with the target.5. The conducted electrical weapon of wherein the processor in accordance with the magnitude of the divided voltage further determines at least one of whether the electrode is coupled to the target and whether the electrodes are shorted.6. A method performed by a conducted electrical weapon (“CEW”) for determining whether a stimulus ...

Absence of Voltage Indicator with Communication Network Based Secondary Power Source

A system for the detection and indication of both the absence and presence of voltage is described. The system has a voltage detector module, a voltage indicator module, and a communication network based continuous secondary power source configured to enable the voltage indicator module to positively indicate the absence of voltage in the primary circuit. In some embodiments, the system can positively indicate the presence of voltage in the primary circuit such that the positive detection and indication is powered by the primary circuit itself. In some embodiments, the positive detection and indication of voltage can also be powered by the communication network based secondary power source. 1. A system for the detection and indication of voltage for a primary circuit comprising:a voltage detector module;a voltage indicator module; anda continuous secondary power source configured to enable the voltage indicator module to positively indicate the absence of voltage in the primary circuit.2. The system for the detection and indication of voltage for a primary circuit of wherein the continuous secondary power source is a communication network based power source.3. The system for the detection and indication of voltage for a primary circuit of wherein the continuous secondary power source is a power-over-Ethernet source.4. The system for the detection and indication of voltage for a primary circuit of wherein the voltage indicator is configured to positively indicate the presence of voltage.5. The system for the detection and indication of voltage for a primary circuit of wherein power for the positive indication of the presence of voltage is derived from the primary circuit. This application claims priority to U.S. Provisional Application No. 61/865,381, filed Aug. 13, 2013, the subject matter of which is hereby incorporated by reference in its entirety.The present invention relates generally to voltage detectors and indicators and specifically to indicating the absence ...

DEAD FRONT CONNECTOR HAVING A VOLTAGE INDICATOR

A dead front connector including an electrical coupling, a voltage tap, a voltage testing circuit. The electrical coupling is configured to electrically connect a power cable to a device. The voltage tap is configured to allow testing for the presence of a voltage between the power cable and the device. The voltage testing circuit is placed within the voltage tap. The voltage testing circuit includes an indicator configured to provide an indication when the voltage is present. 1. A dead front connector comprising:an electrical coupling configured to electrically connect a power cable to a device;a voltage tap configured to allow testing for the presence of a voltage between the power cable and the device; anda voltage testing circuit placed within the voltage tap, the voltage testing circuit including an indicator configured to provide an indication when the voltage is present.2. The dead front connector of claim 1 , wherein the voltage testing circuit is permanently affixed to the voltage tap.3. The dead front connector of claim 1 , wherein the voltage testing circuit is selectively removable from the voltage tap.4. The dead front connector of claim 1 , wherein the voltage testing circuit comprises:a test input for receiving the voltage;a first capacitor electrically coupled to the input;a diode electrically coupled to the first capacitor;a switch electrically coupled to the diode;the indicator electrically coupled to the switch; anda second capacitor electrically coupled in a parallel-type connection to the first capacitor, the diode, the switch, and the indicator.5. The dead front connector of claim 4 , wherein the first capacitor claim 4 , the diode claim 4 , the switch claim 4 , and the indicator are connected in an electrical series-type connection.6. The dead front connector of claim 4 , wherein the switch is closed when a capacitor voltage of the second capacitor is above a predetermined threshold.7. The dead front connector of claim 6 , wherein the ...

WIRELESS CURRENT SENSOR

The present disclosure pertains to systems and methods for measuring electrical parameters in an electric power system. In one embodiment, a system may include a line-mounted wireless current sensor comprising a current monitoring subsystem to generate a current measurement of an alternating current flow through an electrical conductor. The line-mounted wireless current sensor may harvest power from the electrical conductor. A processing subsystem may generate a message comprising the current measurement, and the message may be transmitted at a synchronization point using a wireless communication subsystem. An intelligent electronic device (IED) may receive the message. The IED may further generate a voltage and generate a phasor based on the current measurement and the voltage measurement. A control action subsystem may implement a control action (e.g., selectively connecting or disconnecting a capacitor bank) based on the phasor. 1. A system to calculate a phasor in an electrical power system , the system comprising: a current monitoring subsystem to generate a current measurement of an alternating current flow through an electrical conductor;', 'a power harvesting subsystem to harvest power from the electrical conductor;', 'a first processing subsystem to generate a message comprising the current measurement;', 'a first timing subsystem to determine a synchronization point at which to transmit the message; and', 'a first wireless communication subsystem to transmit the message at the synchronization point; and, 'a line-mounted wireless current sensor, comprising a voltage monitoring subsystem to generate a voltage measurement of the alternating current flow through the electrical conductor;', 'a second wireless communication subsystem to receive the message;', 'a second processing subsystem to generate a phasor based on the current measurement and the voltage measurement;', 'a monitored equipment subsystem to interface with monitored equipment in the electric ...

FINGER VOLTAGE SENSOR

The present invention is a finger voltage sensor that includes a base finger ring worn by a user that works near an electrical source, an electricity sensor disposed on the base finger ring, the electricity sensor detects one or more electrical fields associated with the electrical source and a warning light disposed on the base finger ring, the warning light emits a constant light when the electricity sensor is activated and is in communication with the electricity sensor. The finger voltage sensor can also include a beeper instead of a warning light and a base finger ring that includes a hook and loop fastener that is releasably attached to a user's finger. 1. A finger voltage sensor , comprising:a base finger ring worn by a user that works near an electrical source;an electricity sensor disposed on the base finger ring, the electricity sensor detects one or more electrical fields associated with the electrical source; anda warning light disposed on the base finger ring, the warning light emits a light when the electricity sensor is activated and is in communication with the electricity sensor.2. The finger voltage sensor according to claim 1 , wherein the user is an electric worker.3. The finger voltage sensor according to claim 1 , wherein the base finger ring is made of a selected one of elastic and hard plastic.4. The finger voltage sensor according to claim 1 , wherein the electrical source is a high voltage wire.5. The finger voltage sensor according to claim 1 , wherein the warning light is in communication with the electricity sensor with a microchip.6. The finger voltage sensor according to claim 1 , wherein the warning light emits a selected one of a plurality of blinks and a plurality of flashes when the electricity sensor is activated.7. The finger voltage sensor according to claim 1 , wherein the warning light is a selected one of a LCD light and a LED light.8. The finger voltage sensor according to claim 1 , wherein the warning light is positioned ...

SYSTEM, METHOD AND APPARATUS FOR DETECTING STRAY VOLTAGES

A device for detecting stray voltage in a body of water includes a float, a probe wire connected to the float, a voltage detection circuit electrically connected to the probe wire, and an alarm module electrically connected to the voltage detection circuit. The voltage detection circuit includes an electrical input for receiving a signal from the probe wire and is configured to generate an alert via the alarm module in response to a voltage provided to the electrical input by the probe wire. 1. A device for detecting stray voltage in a body of water , comprising:a float;a probe wire connected to the float;an AC and DC voltage detection circuit electrically connected to the probe wire; andan alarm module electrically connected to the voltage detection circuit;wherein the voltage detection circuit includes an electrical input for receiving a signal from the probe wire and is configured to generate an alert via the alarm module in response to a voltage provided to the electrical input by the probe wire;wherein the voltage detection circuit is configured to detect both AC and DC voltages in a body of water.2. The device of claim 5 , wherein:the voltage detection circuit is configured to generate a visual alert via at least one indicator LED.3. The device of claim 2 , wherein:the at least one indicator LED is a red indicator LED.4. The device of claim 5 , wherein:the alert is an audible alarm.5. A device for detecting stray voltage in a body of water claim 5 , comprising:a float;a probe wire connected to the float;a voltage detection circuit electrically connected to the probe wire; andan alarm module electrically connected to the voltage detection circuit;wherein the voltage detection circuit includes an electrical input for receiving a signal from the probe wire and is configured to generate an alert via the alarm module in response to a voltage provided to the electrical input by the probe wire;wherein the voltage detection circuit includes a first operational ...

NON-DESTRUCTIVE SHORT CIRCUIT TESTING FOR ELECTRICALLY OPERATED CIRCUIT BREAKERS

A testing assembly includes a power supply and at least one circuit phase corresponding to a circuit phase of a motor branch circuit assembly. The circuit phase includes a current detector, a transistor, and an isolating unit. The testing assembly also includes a switch selecting between a RUN mode and a TEST mode. The testing assembly is connected to the motor branch circuit assembly. Prior to placing the motor branch circuit assembly into operation, the testing assembly can provide low voltage testing on the circuit phases of the motor branch circuit assembly. The testing assembly can check for ground faults and line-to-line faults in the motor branch circuit assembly when placed into the Test mode. In this manner, faults destructive to the motor branch circuit assembly can be avoided and corrected. 1. An apparatus for detecting faults in a motor branch circuit assembly , comprising:a power supply; a current detector coupled to the power supply;', 'a transistor coupled to the current detector;', 'an isolating unit coupled to the transistor and the motor branch circuit assembly;, 'at least one line phase corresponding to a line phase of the motor branch circuit assembly, each line phase includinga switch coupled to the power supply and operable to place the apparatus in a test mode, the current detector operable to detect a presence of a current in the test mode when the isolation unit is closed, detection of the presence of the current indicating a ground fault in the corresponding line phase of the motor branch circuit assembly.2. The apparatus of claim 1 , wherein the power supply provides a low voltage to the line phase under test.3. The apparatus of claim 2 , wherein the low voltage is 24 volts DC.4. The apparatus of claim 1 , wherein the transistor operates in a current limiting mode.5. The apparatus of claim 1 , wherein the apparatus includes three line phases corresponding to three respective line phases of the motor branch circuit assembly claim 1 , the ...

Voltage Testing System

A voltage testing system. The voltage testing system includes a pair of probes, each having a housing with a first end and a second end, wherein the pair of probes are electrically connected by a wire affixed to the first end of each of the pair of probes. A prong extends from the second end of the pair of probes, wherein a pin extends therethrough. The pin is electrically conductive, such that the pin is in communication with a fuse and a plurality of lights within the housing. The pin can be spring-biased such that a connection is formed between the fuse and the pin when the force is applied to the pin. The fuse can sever the electrical connection when a set current is transmitted through the fuse, such that a user is protected from excessive currents. The plurality of lights illuminate in response to receiving a preset voltage. 1) A voltage testing system , comprising:a pair of probes, each comprising a housing having a first end and a second end;wherein the pair of probes are electrically connected by a wire affixed to the first end of each of the pair of probes;a prong extending from the second end of each of the pair of probes;wherein a pin is affixed to each prong, the pin configured to conduct electricity therethrough;a fuse in electrical communication with the pin, wherein the fuse is configured to sever the electrical connection when a set current is transmitted therethrough;a plurality of lights disposed within the housing, the plurality of lights in electrical communication with the pin;wherein the plurality of lights are configured to illuminate at a preset voltage.2) The voltage testing system of claim 1 , wherein the pin is selectively movable between an extended position and a retracted position claim 1 , wherein a first contact disposed on a proximal end of the pin contacts a second contact extending from the fuse when in the retracted position.3) The voltage testing system of claim 2 , wherein the pin is spring-biased towards the extended position ...

CIRCUIT MULTI-TESTER INCLUDING PHASE ROTATION-MEASUREMENT CIRCUITRY

Systems and methods can be used in connection with a circuit multi-tester including phase rotation-measurement circuitry. A power-testing device comprising a plug and an enclosure with circuitry can be used to display various power characteristics of a receptacle. The plug of the power-testing device can be received into a compatible power receptacle. The reception of the plug into the receptacle can allow for power communication from a power source supplying power to the power receptacle and the power-testing device for power measurement purposes. The power-testing device can include an enclosure with circuitry that can measure phase rotation information and can detect the presence of power on power lines of the receptacle. Based on the detected presence of power and phase rotation information, the power-testing device can output a visual indicator to the technician that represents the presence of the power and phase rotation orientation. 1. A power-testing device comprising:a plug that is configured to be received into a power receptacle for testing; andan enclosure with circuitry for outputting a visual indicator of a presence of power, per phase, for the power receptacle and of phase rotation information about the power receptacle.2. The power-testing device of claim 1 , wherein the circuitry is configured to transmit power information to a circuit tracer device for determining a location of a power source corresponding to the power receptacle.3. The power-testing device of claim 1 , further comprising:a display for indicating voltage measurement information corresponding to each phase.4. The power-testing device of claim 1 , wherein the plug is interchangeable with different types of plugs useable with different types of power receptacles.5. The power-testing device of claim 1 , wherein the circuitry is configured to communicate with a wireless user device for transmitting power and phase rotation information to a user.6. The power-testing device of claim 1 , ...

Capacitive voltage sensor assembly

A capacitive voltage sensor assembly includes an electrode extending along a longitudinal axis, the electrode having a first end and a second end opposite the first end, and a tubular shield surrounding and spaced radially outward from a portion of the electrode. The tubular shield includes a plurality of through holes. The sensor assembly also includes a circular sensor element positioned radially inward of the tubular shield and including a first layer made of electrically conductive material and a second layer made of electrically insulating material. The circular sensor element includes a plurality of circumferentially spaced gaps.

Power-Outage Sensing Apparatus

The apparatus is for use with a grid-linked facility and an alarm functionality. The grid-linked facility is of the type having a building containing an electrical load; and a breaker connected to the load and to the grid. The alarm functionality includes electronics adapted to produce information, the information being responsive to the availability of grid power downstream of the breaker; and transmission functionality adapted to receive information and to send received information beyond the building, the transmission functionality being coupled in use to the electronics for the receipt of information therefrom. The apparatus comprises a sensing functionality disposed in use upstream of the breaker; and circuitry coupled in use to the sensing functionality and the transmission functionality to deliver information associated with the availability of grid power upstream of the breaker to the transmission functionality. 1. Apparatus for use with a grid-linked facility and an alarm functionality , a building containing an electrical load; and', 'a breaker connected to the load and to the grid,, 'the grid-linked facility being of the type having electronics adapted to produce information, the information being responsive to the availability of grid power downstream of the breaker; and', 'transmission functionality adapted to receive information from the electronics and to send received information beyond the building, the transmission functionality being coupled in use to the electronics for the receipt of information therefrom,, 'the alarm functionality including a sensing functionality disposed in use upstream of the breaker; and', 'circuitry coupled in use to the sensing functionality and the transmission functionality to deliver information associated with the availability of grid power upstream of the breaker to the transmission functionality., 'the apparatus comprising2. Apparatus according to claim 1 , wherein the circuitry is coupled in use to the sensing ...

LOW-POWER VOLTAGE DETECTION CIRCUIT

The present disclosure illustrates a low-power voltage detection circuit, including a threshold voltage detection circuit, a leakage detection circuit and a low-voltage detection circuit. By utilizing the above-mentioned threshold voltage detection circuit and leakage detection circuit, the voltage variations caused by leakage, temperature or process can be detected in the more efficient and power saving way. 1. A low-power voltage detection circuit , comprising:a voltage source;a voltage detection circuit configured to sample a voltage of the voltage source when being triggered, and determine whether the voltage of the voltage source is lower than a reference voltage;a threshold voltage detection circuit coupled to a first control terminal of the voltage detection circuit, and configured to detect whether a voltage drop in the voltage of the voltage source exceeds a threshold voltage in a sample cycle, and output a first trigger signal to trigger the voltage detection circuit when the voltage drop in the voltage of the voltage source exceeds the threshold voltage; and an operation voltage circuit respectively coupled to a first switch circuit and a second switch circuit, and configured to output an operation voltage;', 'a first capacitor coupled between the first switch circuit and a first ground;', 'a second capacitor coupled between the second switch circuit and a second ground terminal; and', 'a first comparator configured to compare whether a voltage difference between the voltage on the first capacitor and the second capacitor exceeds a predetermined voltage, wherein the first comparator outputs a second trigger signal to trigger the voltage detection circuit when the voltage difference between the voltage on the first capacitor and the second capacitor exceeds a predetermined voltage,, 'a current leakage detection circuit, comprisingwherein discharge rates of the first capacitor and the second capacitor are different from each other.2. The low-power voltage ...

Digital Voltmeter

A digital voltmeter, where a number of clock pulses for a first ramp voltage to reach an input voltage is determined. Next, a number of clock pulses for a second ramp voltage to reach the input voltage is determined. One of the first and the second ramp voltages having a least number of clock pulses to reach the input voltage is determined. A determination is made for a number of clock pulses for the determined one of the first and the second ramp voltages to reach a reference voltage. A digital code is generated for the input voltage based on the determined number of clock pulses for reaching the reference voltage and the determined least number of clock pulses for reaching the input voltage. 1. A method for operating a digital voltmeter , comprising the steps of:determining a number of clock pulses for a first ramp voltage to reach an input voltage;determining a number of clock pulses for a second ramp voltage to reach the input voltage;determining one of the first and the second ramp voltages having a least number of clock pulses to reach the input voltage;determining a number of clock pulses for the determined one of the first and the second ramp voltages to reach a reference voltage; andgenerating a digital code for the input voltage based on the determined number of clock pulses for reaching the reference voltage and the determined least number of clock pulses for reaching the input voltage.2. The method of wherein the reference voltage is a fractional amount of a rail voltage.3. The method of wherein the first ramp voltage is an upward ramping voltage signal starting from ground and wherein the second ramp voltage is a downward ramping voltage signal starting from a high voltage.4. The method of wherein the first ramp voltage is a downward ramping voltage signal starting from a high voltage and the second ramp voltage is an upward ramping voltage signal starting from ground.5. A digital voltmeter comprising:a multiplexer for selecting between an input voltage ...

DC VOLTAGE DETECTOR

A DC voltage detector, which is configured to detect the presence or absence of a DC voltage in a detection target () through bringing a detection electrode () provided inside a housing () to a vicinity of the detection target (), includes an AC generation unit () configured to generate an AC current corresponding to the DC voltage through changing a capacitance, the AC generation unit () being arranged between an inter-electrode stray capacitance (C) formed between the detection target () and the detection electrode () and a ground stray capacitance (C) formed between an internal shield () of the housing () and a ground. 1. A DC voltage detector , which is configured to detect the presence or absence of a DC voltage in a detection target through bringing a detection electrode provided inside a housing to a vicinity of the detection target ,the DC voltage detector comprising an AC generation unit configured to generate an AC current corresponding to the DC voltage through changing a capacitance, the AC generation unit being arranged between an inter-electrode stray capacitance formed between the detection target and the detection electrode and a ground stray capacitance formed between an internal shield of the housing and a ground.2. The DC voltage detector according to claim 1 , wherein the AC generation unit comprises:a variable capacitor connected to an output side of the detection electrode; anda piezoelectric element configured to change a capacitance of the variable capacitor.3. The DC voltage detector according to claim 1 , wherein the internal shield is formed on a portion inside the housing excluding the detection electrode.4. The DC voltage detector according to claim 1 , wherein the detection target comprises a grounding circuit.5. The DC voltage detector according to claim 1 , wherein the detection target comprises a non-grounding circuit. The present invention relates to a DC voltage detector configured to detect the presence or absence of a DC voltage ...

TRACEABLE CABLES

Traceable cables (e.g., networking cables, power cables, etc.). Some embodiments include a traceable power cable with a battery (e.g., that may be rechargeable from current from an external power source to which the power cable is electrically connected). Some embodiments include a traceable networking cable configured to draw power from power-over-Ethernet (POE) power sourcing equipment (PSE) even if the networking cable is not connected to a separate powered device (PD). 134-. (canceled)35. A power cable comprising:a cable having a first end, a second end, two or more power conductors in a flexible sheath between the first end and the second end, and one or more indicator wires in the flexible sheath between the first end and the second end;a male connector hood on the first end of the cable;two or more blades or pins extending from a mating end of the male connector hood, the two or more blades or pins each connected to one of the two or more power conductors of the cable;a female connector hood on the second end of the cable, the female connector hood including a mating end defining two or more recesses each configured to receive a single blade or pin in electrical communication with a single one of the two or more power conductors of the cable;an electric power source incorporated into at least one of the connector hoods, the electric power source comprising a capacitor;an electrically activated telltale incorporated into at least one of the connector hoods; anda manually operated switch incorporated into at least one of the connector hoods and configured to initiate electrical communication between the electric power source, the one or more indicator wires, and the electrically activated telltale.36. The power cable of claim 35 , further comprising a charging circuit coupled to the two or more conductors and configured such that if the power cable is coupled to an external electric power source claim 35 , the charging circuit can communicate electric current ...

Voltage detecting glove

A voltage detecting glove comprises a glove liner and an outer glove shell. A conductive antenna is disposed inside the outer glove shell but separated from the glove liner by a buffer. The antenna is connected to electronic circuitry configured to sense a voltage indicative of the proximity of the antenna to an AC electric field resulting from energized AC source, and to activate an alarm if the strength of the field exceeds a preselected threshold limit.

SYSTEM FOR INDICATING THE PRESENCE OF VOLTAGE IN A HIGH-VOLTAGE NETWORK

A voltage presence indicating system intended to be connected to a voltage measurement sensor for each phase of a high-voltage electrical network, a visual indicator representing the presence of the measured voltage, a first peak limiter having a first regulation voltage so as to deliver a first sinusoidal output signal representing the measured voltage and a second peak limiter having a second regulation voltage so as to deliver a second sinusoidal output signal representing the phase angle of the measured voltage, the second regulation voltage being higher than the first regulation voltage. 1. A voltage presence indicating system intended to be connected to a voltage measurement sensor for each phase of a high-voltage electrical network , wherein the indicating system comprises for each phase:a visual indicator of the presence of a voltage measured by the sensor,a first peak limiter having a first regulation voltage so as to deliver, at a first output terminal, a first sinusoidal output signal representing the measured voltage,a second peak limiter having a second regulation voltage so as to deliver, at a second output terminal, a second sinusoidal output signal representing the phase angle of the measured voltage, the second regulation voltage being greater than the first regulation voltage.2. The indicating system according to claim 1 , wherein it includes for each phase a first limiter resistor connected to the first output terminal claim 1 , and a second limiter resistor connected to the second output terminal claim 1 , the second limiter resistor having a higher value than the first limiter resistor.3. The indicating system according to claim 1 , wherein it includes for each phase a capacitive bridge formed of a first capacitor in series with a second capacitor claim 1 , the second peak limiter being connected in parallel with the capacitive bridge and the first peak limiter being connected in parallel with the first capacitor.4. The indicating system ...

Determining Electrical Contacting Between An Electrical System And A Measuring System

To determine in a simple and unequivocal manner whether measurement contacts at which a voltage is to be measured have been properly contacted in a measurement system, in the measurement system, after a discharge switch connecting a charging circuit to a voltage measurement device is closed, the charging circuit is discharged via an internal resistance of the voltage measurement device. When the discharge switch is closed, after a measurement switch connecting the voltage measurement device to the measurement contacts is closed, it is established whether the electrical system is contacted with the measurement system by analyzing the voltage curve at the voltage measurement device after closure of the measurement switch. Advantageously, after the discharge switch is closed, the charging circuit is discharged via a discharge resistor connected in series or in parallel with the voltage measurement device and via the internal resistance. 1. A method for determining an electrical contacting of an electrical system with a measurement system , the measurement system being connectable to measurement points of the electrical system by means of measurement contacts , wherein , in the measurement system , after a discharge switch connecting a charging circuit to a voltage measurement device is closed , the charging circuit is discharged via an internal resistance of the voltage measurement device , and in that , when the discharge switch is closed , after a measurement switch connecting the voltage measurement device to the measurement contacts is closed , the contacting of the electrical system is with the measurement system is determined by analyzing the voltage curve at the voltage measurement device starting from closure of the measurement switch.2. The method according to claim 1 , wherein claim 1 , after the discharge switch is closed and before the measurement switch is closed claim 1 , a characteristic voltage curve of the measurement system is recorded by means of the ...

Optical sensing with critically coupled planar waveguide with optional integration of layered two-dimensional materials

An optical sensing system includes a planar optical waveguide having a first surface for detection and a second surface for coupling light. The optical sensing system includes a functional layer integral with the first surface of the planar optical waveguide, and a coupling layer in contact with the second surface of the planar optical waveguide, the coupling layer having a lower refractive index than the planar optical waveguide. The optical sensing system includes an optical source arranged to illuminate at least a portion of the second surface of the planar optical waveguide through the coupling layer with substantially critical optical coupling. The optical sensing system also includes an optical detector arranged to receive a portion of light from the optical source after being reflected from the first surface of the planar optical waveguide and passing through the coupling layer.

VOLTAGE INDICATOR

An electrical safety monitoring device includes a first set of digital switches and a second set of digital switches for each of a plurality of line inputs, a first set of visual indicators, wherein each of the first set of visual indicators is electrically connected to one of the first set of digital switches and a second set of visual indicators, wherein each of the second set of visual indicators is electrically connected to one of the second set of digital switches. There is a first voltage-controlled oscillator operatively connected to the first set of digital switches for controlling a flash rate of the first set of visual indicators when the positive voltage is present and a second voltage-controlled oscillator operatively connected to the second set of digital switches for controlling a flash rate of the second plurality of visual indicators when a magnitude of the negative voltage is present. 1. An electrical safety monitoring device , comprising:a first set of digital switches for each of a plurality of line inputs wherein each of the first set of digital switches is configured to switch between a first state when there is a positive voltage present on a corresponding one of the plurality of line inputs and a second state when there is no voltage present on the corresponding one of the plurality of line inputs;a second set of digital switches for each of the plurality of line inputs wherein each of the second set of digital switches is configured to switch between a first state when there is a negative voltage present on a corresponding one of the plurality of line inputs and a second state when there is no voltage present on the corresponding one of the plurality of line inputs;a first set of visual indicators, wherein each of the first set of visual indicators is electrically connected to one of the first set of digital switches;a second set of visual indicators, wherein each of the second set of visual indicators is electrically connected to one of the ...

Apparatus and Method for Determining the Status and Phase of an Electric Power Cable

A probe uses a small diameter insulated needle to accurately penetrate the jacket and thin outer semiconductor sheath of URD cable so as to capacitive couple to the high voltage center conductor and determine its energized status (live or dead) and phase attribute. A precision needle depth gauge, mechanical hard stop, and digital display ensures that the needle does not penetrate the thick center conductor insulation material and provides an indication of the center conductor voltage. The probe can be combined with either internal or external phase identification circuitry to determine the phase attribute of the URD cable. 1. A method of determining the energized status of URD cable in a power distribution network , said method comprising:providing a small diameter insulated needle;penetrating said URD cable outer semiconductor sheath with said needle;measuring voltage on said needle; anddetermining said energized status of said URD cable from said voltage on said needle.2. A method as claimed in additionally comprises determining phase attribute of said URD cable from said voltage on said needle.3. A method as claimed in wherein said penetrating comprises:measuring depth of said penetration of said needle into said URD cable;communicating said depth to an operator as said operator penetrates said URD cable with said needle; andproviding an adjustable mechanical hard stop to prevent said needle penetration beyond a selected depth into said URD cable.4. A method as claimed in wherein said measuring comprises:shielding said needle from voltages outside said URD cable;amplifying voltage on said needle; andcommunicating said needle voltage to operator as said operator penetrates said URD cable with said needle.5. A method as claimed in wherein said determining comprises:measuring said needle resistance to ground;comparing said needle resistance to a predetermined resistance;comparing said needle voltage to a predetermined voltage;indicating said URD cable is energized ...

METHOD FOR CHECKING THE ABSENCE OF VOLTAGE ON A POWER ELECTRONIC COMPONENT OF A MOTOR VEHICLE

A method is disclosed for checking the absence of voltage on a power electronic component connected to a high-voltage battery and to an electrical machine in a high-voltage network of a motor vehicle, which component has a higher voltage than a low-voltage network of the motor vehicle. The power electronic component includes an intermediate circuit capacitor, a passive discharge resistor, a plug-in terminal for at least one high-voltage load and a fuse which is connected upstream of the plug-in terminal. Following disconnection of the high-voltage battery from the high-voltage network and when the connector of the cable plugged into the plug-in terminal is withdrawn from the plug-in terminal—or a target terminal, a feed voltage is applied via the high-voltage contacts of the plug connection and the voltage curve and/or, after a defined charging time interval of the intermediate circuit capacitor, the resistance is measured by means of a measuring instrument, wherein an absence of voltage is determined in the event of a voltage curve lying in an intended range—or a resistance lying in an intended range. 113.-. (canceled)14. A method for testing an absence of voltage on a power electronics component connected with a high-voltage battery and an electric machine in a high-voltage network of a motor vehicle , wherein the power electronics component has an intermediate circuit capacitor , a passive discharge resistor , a plug-in terminal and a fuse arranged upstream of the plug-in terminal , and is connected to at least one high-voltage load via a cable having first and second connectors respectively inserted in the plug-in terminal and in a target terminal , said method comprisingafter separation of the first or second connector from the plug-in terminal or the target terminal, applying a supply voltage via high-voltage contacts of the plug-in terminal;measuring with a measuring device a voltage course and/or, after a defined charging time period of the intermediate ...

CHARGING AND DISCHARGING CIRCUIT, CAPACITOR UNIT, AND ELECTROSCOPE

A charging and discharging circuit charges an input electric current to a plurality of capacitors and discharges output electric current from the plurality of capacitors. The charging and discharging circuit comprises change-over switches which are switchable to a series electric current state, which electric current flows to the plurality of the capacitors in series, and a parallel electric current state, which electric current flows to the plurality of the capacitors in parallel, and a discharge switch which starts discharging of the output electric current from the plurality of capacitors. A capacitor unit comprises a pair of electrodes. The electrodes of the pair of the capacitor units comprise a body part being almost parallel mutually, at least the one of the pair of electrodes comprise a non-parallel part which stands toward the other electrode side on the end of the body part, and is not almost parallel to the other electrode. 1. A charging and discharging circuit characterized by the following;the charging and discharging circuit charges input electric current to a plurality of capacitors, the charging and discharging circuit discharges output electric current from the plurality of the capacitors;the charging and discharging circuit comprises change-over switches which are switchable to a series electric current state, which electric current can be made to flow to the plurality of the capacitors in series, and a parallel electric current state, which electric current can be made to flow to the plurality of the capacitors in parallel;the charging and discharging circuit comprises, apart from the change-over switches, a discharge switch which starts a discharging of the output electric current from the plurality of the capacitors too.2. The charging and discharging circuit as claimed in claim 1 , characterized by the following;the charging and discharging circuit comprises a series wiring which connects to the plurality of the capacitors in series;the ...

Di-circuit breaker device and operating method for detecting a voltage on the pen conductor

A DI-circuit breaker device includes a summation current converter for detecting fault currents in a phase conductor and a neutral conductor, and a detection device for detecting fault states of a protective ground conductor. The detection device detects the presence of a phase voltage on the protective ground conductor as a fault state. The detection device has a capacitive sensor which, when touched by a user, forms an electric capacitor with an impedance relative to ground potential. The detection device further has evaluating electronics adapted to determine a phase position by connecting the sensor to the phase conductor and, separately therefrom, to the neutral conductor. The evaluating electronics determine the absence of a phase voltage on the protective ground conductor when there is no voltage between the neutral conductor and the protective ground conductor when phase is present at the phase conductor. Further, a corresponding operating method is described.

SHOCK DETECTOR

A shock detector having an electrical detector having a set of water immersible electrodes for detecting hazardous water conditions through the determination of the presence of either an electrical current in a body of water, a voltage in the body of water or a voltage gradient in the body of water and then providing an alert to the existence of hazardous electrical conditions in the body of water which in some cases may transmitted to a power source to shut off a power source thereby removing the hazardous water condition. 1. A shock detector comprising;a ground electrode for engaging with soil proximate a body of water;an electrical conductor connecting said ground electrode to said shock detector;a first water electrode for immersing in a body of water;a second electrical conductor connecting said water electrode to said shock detector;an electrical detector comprising a voltmeter located in said shock detector for measuring a voltage between the ground electrode and the first water electrode; andan alarm for alerting a person that the measured voltage between the ground electrode and the first water electrode has exceeded a dangerous threshold that would injure or electrocute a person.2. The shock detector of including a second water electrode spaced from said first water electrode and a third electrical conductor connecting said first water electrode to said shock detector;a switch for selecting the second water electrode and the first water electrode for measurement of the voltage therebetween to determine a voltage gradient within the body of water; anda further alarm in the shock detector for alerting a person that the voltage gradient has exceeded the dangerous threshold.3. The shock detector of including a third water electrode spaced from said second water electrode claim 2 , said switch operable for selecting the second water electrode and the third water electrodes for measurement of the voltage gradient therebetween said further alarm in the shock ...

Method for Controlling Access to an Electrical Enclosure

A method for allowing access to an electrical enclosure having a disconnect includes upon initiation by a user or upon a change of state of the disconnect automatically performing the steps of checking for an absence of voltage, giving a positive indication of an absence of voltage, checking the state of each phase of the electrical disconnect to ensure contacts of the disconnect are open, and opening a lock on the enclosure.

ENERGY DETECTION WARNING DEVICE

A device includes a housing, one or more sensors configured to detect at least one of a voltage or a current in proximity to the device, one or more lighting elements configured to output light responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more speakers configured to output audio responsive to the one or more sensors detecting the at least one of the voltage or the current in proximity to the device, one or more network interfaces configured to communicatively couple the device to one or more additional devices, and one or more fastening mechanisms configured to secure the device to a surface. 1. A device , comprising:a housing;one or more lighting elements disposed within the housing;one or more speakers disposed within the housing;at least one of a voltage detector or a current detector disposed within the housing;one or more processors; and receiving sensor data from the at least one of the voltage detector or the current detector,', 'determining, based at least in part on the sensor data, to issue an alert, and', a first indication associated with the alert to be output via the one or more lighting elements, or', 'a second indication associated with the alert to be output via the one or more speakers., 'causing at least one of], 'one or more computer-readable media storing instructions that, when executed, cause the one or more processors to perform operations including2. The device of claim 1 , wherein the one or more lighting elements are configured to output the first indication via a first side of the housing claim 1 , and a battery disposed within the housing; and', 'a charging port located on a second side of the housing., 'wherein the device further comprises3. The device of claim 1 , further comprising one or more fastening mechanisms claim 1 , the one or more fastening mechanisms being at least partially disposed over a first side of the housing that is opposite a second ...

MOBILITY PLATFORM BASED NON-CONTACT VOLTAGE DETECTOR

A non-contact voltage detector module pluggable to a mobile communication device. The non-contact voltage comprises an antenna, a connector configured for connecting to a connector of a mobile communication device, and an assembly coupled to the antenna and the connector. The assembly converts an electromagnetic field received by the antenna to an indication of a strength of the electromagnetic field and transmits the indication of the strength of the electromagnetic field via the connector. 115-. (canceled)16. A non-contact voltage detector module pluggable to a mobile communication device , comprising:an antenna;a connector configured for connecting to a connector of a mobile communication device; andan assembly, coupled to the antenna and the connector, that converts an electromagnetic field received by the antenna to an indication of a strength of the electromagnetic field and transmits the indication of the strength of the electromagnetic field via the connector.17. The non-contact voltage detector module of claim 16 , wherein the connector is a tip-ring-ring-sleeve (TRRS) connector claim 16 , and the assembly transmits the indication of the strength of the electromagnetic field via a sleeve portion of the TRRS connector.18. The non-contact voltage detector module of claim 16 , wherein the indication of the strength of the electromagnetic field transmitted via the connector is an alternating current (AC) signal comprising a first harmonic restricted by the assembly to a frequency in a frequency range from about 300 Hz to about 4 claim 16 ,200 Hz.19. The non-contact voltage detector module of claim 18 , wherein the first harmonic of the AC signal transmitted via the connector is restricted to a frequency in the range of about 800 Hz to about 4 claim 18 ,200 Hz.20. The non-contact voltage detector module of claim 19 , wherein the non-contact voltage detector is configured to convert an amplified signal to a pulse wave signal.21. The non-contact voltage detector ...

VOLTAGE INDICATOR FOR POWER CORD

A voltage indicator and a method for its use in detecting and indicating the presence of single-phase AC voltage in an electrical power cord. The voltage indicator includes an electronic display, capacitor plate elements connected electrically to the electronic display so as to couple the voltage indicator capacitively to the electrical power cord when alternating current voltage is present, and diodes that act as a rectifier, between one of the capacitor plate elements and the electronic display device. Capacitive coupling develops electrical current through the voltage indicator and energizes the display device when alternating line current voltage is present in the power cord. The voltage indicator is electrically insulated from the power cord it monitors by the usual insulation on the power cord or cable. 1. An optionally attachable and detachable voltage indicator , comprising:a flexible base of electrically non-conductive sheet material, the flexible base having first and second opposite main sides;a display device attached to the flexible base on the first main side thereof and having at least a first display input electrode and a second display input electrode;a first flexible capacitor plate member, said first flexible capacitor plate member being attached the second main side of to the flexible base and being electrically connected to said first display input electrode of said display device;a diode having a first terminal that is connected electrically to said second display input electrode of said display device; anda second conductive capacitor plate element that is connected to an opposite second terminal of the diode; and whereinthe voltage indicator can be coupled capacitively and parasitically with electrical conductors of an electrical power cord on which alternating current voltage is present and on which the voltage indicator is mounted, so as to deliver current through the diode to the display device, and whereby the presence or absence of ...

MOTHERBOARD VOLTAGE TESTING DEVICE

Motherboard voltage testing device includes a power supply module for supplying a DC voltage, an illuminating module, and a switching module for detecting a DC voltage of a motherboard. A first terminal of the switching module is coupled to the power supply module, and a second opposite terminal of the switching module is coupled to the illuminating module. When the switching module detects the DC voltage of the motherboard is in the motherboard, the illuminating module is configured to receive the DC voltage of the power supply module to emit light, and when the switching module detects there is no remaining DC voltage on the motherboard, the illuminating module cannot receive the DC voltage from the motherboard and the illuminating module is power off and does not emit light. 1. A motherboard voltage testing device comprising:a power supply module configured to supply a DC voltage;an illuminating module; anda switching module configured to detect a DC voltage of a motherboard; a first terminal of the switching module coupled to the power supply module, and a second opposite terminal of the switching module coupled to the illuminating module;wherein when the switching module detects the DC voltage of the motherboard is on the motherboard, the illuminating module is configured to receive the DC voltage of the power supply module to emit light, and when the switching module detects there is not rest DC voltage on the motherboard, the illuminating module cannot receive the DC voltage from the power supply module and the illuminating module is power off and does not emit light.2. The motherboard voltage testing device of claim 1 , wherein the power supply module comprises a schottky diode claim 1 , a first input terminal of the schottky diode is coupled to a battery claim 1 , a second input terminal of the schottky diode is coupled to the motherboard claim 1 , and a output terminal of the schottky diode is coupled to the power supply.3. The motherboard voltage testing ...

APPARATUS AND METHOD FOR MONITORING AND CONTROLLING DETECTION OF STRAY VOLTAGE ANOMALIES

Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field. 1. An apparatus mounted to a motor vehicle for identifying hazardous voltages on conductive objects , the apparatus comprising:an electric field sensor, configured to be mounted to the motor vehicle via a bracket, that detects an electric field and provides an analog signal corresponding to the electric field;a signal converter configured to generate a digital signal from the analog signal;a computer, coupled to the electric field sensor via a cable, and configured to be mounted to the motor vehicle, wherein the computer is configured to display at least one of the digital or the analog signal corresponding to the electric field, wherein at least a plot of the electric field over time is displayed; andan indicator for alerting an operator of the computer that a hazardous voltage on a conductive object is present.2. The apparatus of claim 1 , wherein parameters of the computer are variable to account for background noise in the electric field and false alarms.3. The apparatus of claim 1 , wherein the signal converter is an analog to digital converter that digitizes the analog signal to provide a transformation of the analog signal claim 1 , the transformation comprising a plurality of time domain samples claim 1 , each sample representing a magnitude of the electric field.4. The apparatus of claim 3 , wherein the computer comprises a signal ...

Shock detector

A shock detector having an electrical detector having a set of water immersible electrodes for detecting hazardous water conditions through the determination of the presence of either an electrical current in a body of water, a voltage in the body of water or a voltage gradient in the body of water and then providing an alert to the existence of hazardous electrical conditions in the body of water which in some cases may transmitted to a power source to shut off a power source thereby removing the hazardous water condition. 1. A shock detector comprising;a ground electrode for engaging with soil proximate a body of water;an electrical conductor connecting said ground electrode to said shock detector;a first water electrode for immersing in a body of water;a second electrical conductor connecting said water electrode to said shock detector;an electrical detector comprising a voltmeter located in said shock detector for measuring a voltage between the ground electrode and the first water electrode; andan alarm for alerting a person that the measured voltage between the ground electrode and the first water electrode has exceeded a dangerous threshold that would injure or electrocute a person.2. The shock detector of including a second water electrode spaced from said first water electrode and a third electrical conductor connecting said first water electrode to said shock detector;a switch for selecting the second water electrode and the first water electrode for measurement of the voltage therebetween to determine a voltage gradient within the body of water; anda further alarm in the shock detector for alerting a person that the voltage gradient has exceeded the dangerous threshold.3. The shock detector of including a third water electrode spaced from said second water electrode claim 2 , said switch operable for selecting the second water electrode and the third water electrodes for measurement of the voltage gradient therebetween said further alarm in the shock ...

VI HEARTBEAT FUNCTIONALITY

An electrical safety monitoring system is provided. The system includes an analog circuit having line inputs for hardwiring an L1, an L2, an L3, and a GND three-phase connections, the analog circuit configured to monitor if voltage exists between any two of the line inputs, a heartbeat circuit electrically connected to the analog circuit to provide a heartbeat signal indicative of voltage present on any of the line inputs, an isolated voltage source electrically connected to the heartbeat circuit to power the heartbeat circuit with a VDC+ and a VDC−, and a logic circuit in operative communication with the heartbeat circuit for monitoring input from the heartbeat circuit and decoding the input from the heart beat circuit. The isolated voltage source may be supplied by a programmable logic controller (PLC) and the logic circuit may be implemented within the same PLC as a function block. 1. An electrical safety monitoring system comprising:an analog circuit having line inputs for hardwiring a first line (L1), a second line (L2), a third line (L3), and a ground (GND), wherein each of the line inputs is a three-phase connection, wherein the analog circuit is configured to monitor if voltage exists between any two of the line inputs;a heartbeat circuit electrically connected to the analog circuit to provide a heartbeat signal indicative of voltage present on any of the line inputs;an isolated voltage source electrically connected to the heartbeat circuit to power the heartbeat circuit with a VDC+ and a VDC−;a logic circuit in operative communication with the heartbeat circuit for monitoring input from the heartbeat circuit and decoding the input from the heart beat circuit.2. The system of wherein the isolated voltage source is supplied by a programmable logic circuit (PLC) and wherein the logic circuit is implemented by the programmable logic circuit (PLC).3. The system of wherein the heartbeat signal is set to the VDC+ for a first portion of a cycle and to the VDC− for ...

Methods to Initiate the Absence of Voltage Test Over a Network Remotely

An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module. 1. An absence of voltage detection system comprising:an isolation module connected to a voltage source to be detected; andan I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to allow remote activation of the isolation module2. The absence of voltage system of wherein the I/O accessory module contains safety contacts.3. The absence of voltage system of wherein the isolation module has safety contacts.4. The absence of voltage system of further comprising a second isolation module wherein the I/O accessory module is configured to remotely activate both isolation modules.5. The absence of voltage system of further comprising a second isolation module and a second I/O accessory module wherein a control system is configured control the remote activation of each isolation module via the I/O accessory modules. This application claims benefit to U.S. Provisional Patent Application No. 63/163,297, filed on Mar. 19, 2021 [Attorney Docket No.: LCB1076] and U.S. Provisional Patent Application No. 63/185,545, filed on May 7, 2021 [Attorney Docket No.: LCB1076-3], the entirety of which is hereby incorporated by reference herein.The present invention relates generally to absence of voltage detectors and more specifically to using an I/O accessory module for the remote activation of an absence of voltage detector.There are moments when initiating an absence of voltage test in absence of voltage tester (AVT) via a system interface are advantageous, such as:An absence of voltage detection system has an isolation module connected to a voltage source to be detected an I/O accessory module connected to the isolation module wherein the I/O accessory module is configured to ...

METHODS AND APPARATUS FOR DETECTING A VOLTAGE OF A STIMULUS SIGNAL OF A CONDUCTED ELECTRICAL WEAPON

Methods and apparatus for detecting a magnitude of a voltage at a face of a conducted electrical weapon (“CEW”). The magnitude of the voltage may be used to determine whether a pulse of a stimulus signal was delivered to a target. Structures for detecting the magnitude of the voltage may include structures that provide a stimulus voltage. 1. A conducted electrical weapon (“CEW”) comprising:three or more terminals;a signal generator, the signal generator configured to provide a stimulus signal to the three or more terminals;a voltage divider coupled to an output of the signal generator to receive the stimulus signal, the voltage divider configured to divide a voltage of the stimulus signal to provide a divided voltage; and detect a magnitude of the divided voltage;', 'record the magnitude of the divided voltage in the memory., 'a processing circuit, wherein the processing circuit is configured to2. The CEW of wherein the voltage divider comprises a respective voltage divider connected to each of the three or more terminals.3. The CEW of wherein the processing circuit is configured to:in accordance with the magnitude of the divided voltage, instruct the signal generator to provide a next stimulus signal to a next terminal selected by the processing circuit.4. The CEW of wherein dividing the voltage of the stimulus signal includes dividing a high voltage portion and a low voltage portion of each pulse of the stimulus signal claim 1 , the high voltage portion for ionizing air in one more gaps claim 1 , and the low voltage portion for providing the current through a target.5. The CEW of wherein the high voltage portion of each pulse of the stimulus signal is between 40 claim 4 ,000 and 50 claim 4 ,000 V.6. The CEW of wherein the processing circuit is configured to:monitor a status of the stimulus signal in accordance with the magnitude of the divided voltage; andin response to monitoring the status of the stimulus signal, provide a next stimulus signal to a pair of ...

SYSTEM AND METHOD FOR CONTROLLING AN ELECTRICAL RECEPTACLE

An electrical receptacle including an outlet for electrically connecting to an external load, a load terminal electrically connected to the outlet, a line terminal electrically connected to a line and configured to receive line power, an interrupting device, and a testing circuit. The interrupting device electrically connects the load terminal to the line terminal when in a first condition and electrically disconnects the load terminal and the line terminal when in a second condition. The testing circuit is configured to determine when the external load is electrically connected to the outlet, and place the interrupting device in the first condition when the external load is electrically connected to the outlet. 1. An electrical receptacle comprising:an outlet configured to electrically connect to an external load;a load terminal electrically connected to the outlet;a line terminal electrically connected to a line and configured to receive line power;an interrupting device electrically connecting the load terminal to the line terminal when in a first condition and electrically disconnecting the load terminal and the line terminal when in a second condition; and determine when the external load is electrically connected to the outlet, and', 'place the interrupting device in the first condition when the external load is electrically connected to the outlet., 'a testing circuit configured to'}2. The electrical receptacle of claim 1 , wherein the testing circuit determines the external load is electrically connected to the outlet by:outputting a signal,receiving a response signal, andanalyzing the response signal.3. The electrical receptacle of claim 2 , wherein the signal is a voltage.4. The electrical receptacle of claim 3 , wherein the voltage is a direct current voltage.5. The electrical receptacle of claim 1 , wherein the testing circuit determines the external load is electrically connected to the outlet by measuring an electrical characteristic of the response ...

ENERGY DETECTION WARNING DEVICE

An energy detection warning device includes a housing. An electronic indication component is disposed within the housing. One or more sensors are disposed within the housing and are configured to detect an energized conductor present within a particular proximity of a location of the energy detection warning device, and detect a direction in which the energized conductor is located with respect to the location of the energy detection warning device. The direction is an approximate direction. The device also includes a microcontroller configured to: receive input from the one or more sensors, and actuate the electronic indication component, in response to receipt of the input, to indicate the direction in which the energized conductor is located with respect to the location of the energy detection warning device. 1. An energy detection warning device , comprising:a housing;an electronic indication component disposed within the housing; detect an energized conductor present within a particular proximity of a location of the energy detection warning device, and', 'detect a direction in which the energized conductor is located with respect to the location of the energy detection warning device, the direction being an approximate direction; and, 'one or more sensors disposed within the housing and configured to receive input from the one or more sensors, and', 'actuate the electronic indication component, in response to receipt of the input, to indicate the direction in which the energized conductor is located with respect to the location of the energy detection warning device., 'a microcontroller configured to2. The energy detection warning device according to claim 1 , wherein the one or more sensors are further configured to detect an approximate distance between the energized conductor and the energy detection warning device.3. The energy detection warning device according to claim 1 , wherein the electronic indication component includes at least one of:a plurality ...

STAPLE GUN WITH AUTOMATIC DEPTH ADJUSTMENT

A staple gun and a method of using the same. A stapling mechanism in the housing is activated to deliver a staple through an aperture in a housing wall and drive the staple into a surface around a stack of one or more electric cables. The gun includes a reciprocating cable guide for centering the gun on the stack of cables and closing a safety switch to permit the gun's trigger to be activated. A spacer extending outwardly from the housing wall rests on the upper surface of the cable stack. The spacer and a bumper that engages a hammer of the stapling mechanism provide for automatic depth adjustment when driving the staple into the surface. A reciprocating cable guard extending outwardly from the housing wall is positioned between the stack of cables and the staple to aid in preventing the staple from piercing the cable. 1. A staple gun comprising:a housing defining an interior cavity;a wall provided on the housing; said wall defining an aperture therein; a hammer that is movable in one of a first direction and a second direction relative to the wall; said hammer being adapted to strike the staple and drive the same into the surface when moving in the second direction; and', 'a resilient bumper spaced a distance inwardly from an interior surface of the wall; wherein the bumper is contacted by the hammer and stops movement of the hammer in the second direction during the strike of the hammer on the staple., 'a stapling mechanism provided in the interior cavity of the housing; said stapling mechanism being adapted to deliver a staple through the aperture and over a stack of one or more cables resting on a surface; wherein the stapling mechanism includes2. The staple gun according to claim 1 , wherein the stapling mechanism further comprises:a guide assembly having a guide wall with an interior surface that defines a bore; wherein the hammer is located within the bore and the resilient bumper is positioned below an opening to the bore of the guide assembly.3. The ...

MEASURING ROD FOR ELECTRIC METER AND ELECTRIC METER ASSEMBLY USING THE SAME

A measuring rod for an electric meter and an electric meter assembly using the same are disclosed, wherein the device to be detected disposed around the front end of at least one of the test probes allows the electric meter to determine the type of currently inserted test probes and whether the test probes are suitable for use under a current operation mode of the electric meter in a situation when the device to be detected is inserted into the electric meter; and the measuring socket corresponding to the device to be detected is disposed with a determination mechanism for allowing the electric meter to determine whether the abovementioned test probes or test probes of different types are suitable for use under a current operation mode of the electric meter. 1. A measuring rod for an electric meter , wherein the measuring rod consists of two test probes , and each test probe has a front end for individually inserting into a measuring socket on the electric meter and a rear end for connecting an object configured to be tested and measuring high-voltage values , high-current values , or electric resistance values of the object , wherein the improvement comprises:a device to be detected is disposed around the front end of at least one of the test probes, wherein the device to be detected is configured for allowing the electric meter to determine whether the test probes are suitable for use under a current operation mode of the electric meter in a situation when the device to be detected is inserted into the electric meter.2. The measuring rod for the electric meter according to claim 1 , wherein the device to be detected is a protruding part disposed around the front end of the at least one of the test probes.3. The measuring rod for the electric meter according to claim 1 , wherein the device to be detected includes a magnetic member or a sheltering member disposed around the front end of the at least one of the test probes claim 1 , the magnetic member or the ...

Voltage Sensing Glove Assembly

A voltage sensing glove assembly includes a glove that is wearable on a user's hand. The glove is comprised of an electrically insulating material to facilitate the user to grasp exposed electrical wires without risk of electrical shock. A plurality of voltage sensors is each coupled to the glove and each of the voltage sensors is in electrical communication with the exposed electrical wires when the user grasps the exposed electrical wires. Respective ones of the voltage sensors are turned on when the voltage sensors senses electrical voltage in any of the exposed electrical wires. An alert unit is coupled to the glove and the alert unit is in electrical communication with each of the voltage sensors. The alert unit emits an alert when any of the voltage sensors is turned on to alert the user that electrical voltage has been sensed in the exposed electrical wires. 1. An voltage sensing glove assembly being configured to be worn on an electrical worker for identifying wires carrying electrical voltage , said assembly comprising:a glove being wearable on a user's hand, said glove being comprised of an electrically insulating material wherein said glove is configured to facilitate the user to grasp exposed electrical wires without risk of electrical shock;a plurality of voltage sensors, each of said voltage sensors being coupled to said glove wherein each of said voltage sensors is configured to be in electrical communication with the exposed electrical wires when the user grasps the exposed electrical wires, respective ones of said voltage sensors being turned on when said respective voltage sensors senses electrical voltage in any of the exposed electrical wires; andan alert unit being coupled to said glove, said alert unit being in electrical communication with each of said voltage sensors, said alert unit emitting an alert when any of said voltage sensors is turned on wherein said alert unit is configured to alert the user that electrical voltage has been sensed ...

AUTOMATED TESTING OF EMERGENCY LIGHTS

The subject disclosure relates to power failure simulations, for example to test lighting systems, such as emergency lighting units or lighted signage. In some aspects, a method of the disclosed technology includes steps for receiving an interrupt command, terminating power delivery from a first power supply to a lighting array in response to the interrupt command, and measuring one or more power characteristics of the second power supply. Methods and machine-readable media are also provided. 1. A system for simulating power failure , comprising:an interrupt relay coupled between a first power supply and a lighting array;a power monitoring module coupled to a second power supply wherein the second power supply is configured to provide power to the lighting array if power supplied by the first power supply is interrupted;a wireless transceiver configured for transacting data with a wireless backhaul gateway; and receiving an interrupt command;', 'terminating power delivery from the first power supply to the lighting array in response to the interrupt command; and', 'measuring one or more power characteristics of the second power supply., 'a microcontroller coupled to the power monitoring module, the interrupt relay, and the wireless transceiver, wherein the microcontroller is configured to perform operations for2. The system of claim 1 , wherein the interrupt command is locally generated based on a predetermined testing schedule.3. The system of claim 1 , wherein the interrupt command is received from a management system via the wireless transceiver.4. The system of claim 1 , wherein the microcontroller is further configured to perform operations comprising:transmitting data comprising the one or more power characteristics to a management system via the wireless transceiver.5. The system of claim 1 , wherein measuring the one or more power characteristics of the second power supply further comprises:measuring one or more voltage characteristics of the second power ...

LOAD SIDE VOLTAGE SENSING FOR UTILITY METER

An arrangement for use in a utility meter includes at least one circuit path, a three phase service switch, and a three phase monitoring unit. The at least one circuit path operably couples a source of electrical energy to a load. The service switch is operably coupled to the at least one circuit path and is configurable in an open state and a closed state. The monitoring unit is operably coupled to the at least one circuit path between the load and the service switch and is configured to detect a presence and an absence of line voltage on the load. The monitoring unit is further configured (i) to generate an open circuit signal responsive to the detection of the absence of line voltage on the load, and (ii) to generate a closed circuit signal responsive to the detection of the presence of line voltage on the load. 1. An arrangement for use in a utility meter comprising:at least one circuit path operably coupling a source of electrical energy to a load;a service switch operably coupled to the at least one circuit path and configurable in (i) an open state in which an open circuit is formed in the at least one circuit path, and (ii) a closed state in which a closed circuit is formed in the at least one circuit path; anda monitoring unit operably coupled to the at least one circuit path between the load and the service switch and configured to detect a presence and an absence of line voltage on the load, the monitoring unit further configured (i) to generate an open circuit signal responsive to the detection of the absence of line voltage on the load, and (ii) to generate a closed circuit signal responsive to the detection of the presence of line voltage on the load.2. The arrangement of claim 1 , wherein the monitoring unit is operably coupled to each of three circuit paths of the at least one circuit path claim 1 , and is further configured to detect the presence and the absence of line voltage on the load for each of the three circuit paths.3. The arrangement of ...

CURRENT AND/OR VOLTAGE SENSOR DEVICE, AND METHOD OF OPERATION THE SAME

A voltage and or current sensor device for use in medium- or high voltage application, wherein a sensor or sensors of the sensor device is or are arranged in a housing. To enhance communication between the sensor and an electronical device, in order to use maximum possible accuracy potential of the voltage and current sensors, a signal and/or data memory element is integrated in the sensor housing, or placed near the sensor such that the sensor device output signal can be directly evaluated. 1. A voltage and/or current sensor device for use in a medium- or high voltage application , comprising:at least one voltage- and/or current sensor, wherein the sensor or sensors of the sensor device is or are arranged in a sensor housing; anda signal and/or data memory element integrated in the sensor housing, or placed near the at least one voltage and/or current sensor such that a sensor device output signal can be directly accessed for evaluation.2. The voltage and/or current sensor device according to claim 1 , wherein the sensor housing or the sensor device housing is made of a resin claim 1 , or of plastic with a filling of insulating material.3. The voltage and/or current sensor device according to claim 1 , wherein the voltage and or current sensor device is equipped with a signal cable connector claim 1 , and that the near to the sensor placed memory element is integrated in the signal cable connector equipped at the end of the output cable of the sensor device.4. The voltage and/or current sensor device according to claim 3 , wherein the device comprises:a clamp-on connector boot for integration of further sensor-relevant or sensor-signal-relevant elements inside the boot or connector, and for fixation for a cable and RJ45 connector.5. The voltage and/or current sensor device according to claim 4 , comprising:the at least one impedance element, which is a secondary impedance element of a voltage divider of the voltage sensor, placed or integrated in the boot or ...

ELECTRIC FIELD DETECTION DEVICE AND METHODS OF USE THEREOF

One aspect of the present technology relates to an optical electric field sensor device. The device includes a non-conductive housing configured to be located proximate to an electric field. A voltage sensor assembly is positioned within the housing and includes a crystal material positioned to receive an input light beam from a first light source through a first optical fiber. The crystal material is configured to exhibit a Pockels effect when an electric field is applied when the housing is located proximate to the electric field to provide an output light beam to a detector through a second optical fiber. An optical cable is coupled to the housing and configured to house at least a portion of the first optical fiber and the second optical fiber. The first light source and the detector are located remotely from the housing. A method of detecting an electric field is also disclosed. 1. An optical electric field sensor device comprising:a non-conductive housing configured to be located proximate to an electric field;a voltage sensor assembly positioned within the housing, the voltage sensor assembly comprising a crystal material positioned to receive an input light beam from a first light source through a first optical fiber, wherein the crystal material is configured to exhibit a Pockels effect when the electric field is applied through the crystal material when the housing is located proximate to the electric field to provide an output light beam to a detector through a second optical fiber; andan optical cable coupled to the housing and configured to house at least a portion of the first optical fiber and the second optical fiber, wherein the first light source and the detector are located remotely from the housing.2. The optical electric field sensor device of claim 1 , wherein the voltage sensor assembly provides a single continuous beam path between the light source claim 1 , through the crystal material claim 1 , and to the detector.3. The optical electric ...

LOAD TESTING APPARATUS

A load testing apparatus includes a resistive unit that includes one or more resistor groups having a plurality of resistors and is connected with a power source to be tested for a load test. A cooling fan cools the resistors in the resistive unit. The resistive unit includes a current/voltage detection part that detects a current flowing through or a voltage applied to the resistors, the resistor groups, or the resistive unit and a temperature detection part that detects an exhaust temperature at a downstream of the resistive unit. A rotation state detection part detects a rotation state of the cooling fan. A control unit performs off control that stops power supply from the power source to be tested to the resistive unit based on information from the current/voltage detection part, information from the temperature detection part, and information from the rotation state detection part. 1. A load testing apparatus comprising:a resistive unit that includes one or more resistor groups having a plurality of resistors and is connected with a power source to be tested for a load test;a cooling fan that cools the resistors in the resistive unit;a control unit;a current/voltage warning part indicating by at least one of light and sound that the off control is based on the information from the current/voltage detection part;a temperature warning part indicating by at least one of light and sound that the off control is based on the information from the temperature detection part; anda cooling fan warning part indicating by at least one of light and sound that the off control is based on the information from the rotation state detection partwhereinthe resistive unit is provided with a current/voltage detection part that detects a current flowing through or a voltage applied to the resistors, the resistor groups, or the resistive unit and a temperature detection part that detects an exhaust temperature at a downstream of the resistive unit,a rotation state detection part that ...

SYSTEM AND METHOD FOR MONITORING VOLTAGE IN A CABLE

A sensor device for detecting voltage in a conductor cable includes a sense electrode to be disposed over a surface of the conductor cable to cover a sense region having a sense axial width and a sense circumferential length and a reference electrode to be disposed over the surface of the conductor cable to cover a reference region. The reference region has an axial position adjacent the axial position of the sense region and has a reference circumferential length greater than the sense circumferential length. The sensor device further includes a charge measurement circuit connected in series between the sense electrode and the reference electrode to measure a charge measurement and circuitry to compare the charge measurement to a threshold to detect a presence of the voltage in the conductor cable. 1. A sensor device for detecting voltage in a conductor cable , the sensor comprising:a sense electrode to be disposed over a surface of the conductor cable to cover a sense region having a sense axial width and a sense circumferential length;a reference electrode to be disposed over the surface of the conductor cable to cover a reference region, the reference region having an axial position adjacent the axial position of the sense region and having a reference circumferential length greater than the sense circumferential length;a charge measurement circuit connected in series between the sense electrode and the reference electrode to measure a charge measurement; andcircuitry to compare the charge measurement to a threshold to detect a presence of the voltage in the conductor cable.2. The sensor device of claim 1 , further comprising a second sense electrode to be disposed over the surface of the conductor cable to cover a second sense region having a second axial width and a second circumferential length claim 1 , the second sense region having an axial position aligned with the sense region and having a circumferential position adjacent the sense region.3. The sensor ...

CURRENT MEASURING DEVICE

Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, a circuit board with a wire, the wire being adapted to extract a voltage signal from the conductor, a cover member adapted to house the circuit board, first fixing means provided on the cover member, and second fixing means fixed in combination with the first fixing means, in which the conductor is mounted between the first fixing means and the second fixing means. 1. A current measuring device for measuring current , comprising:a conductor adapted to pass current therethrough;a circuit board with a wire, the wire being adapted to extract a voltage signal from the conductor;a cover member adapted to house the circuit board;first fixing means provided on the cover member; andsecond fixing means fixed in combination with the first fixing means,wherein:the conductor is mounted between the first fixing means and the second fixing means.2. The current measuring device according to claim 1 , wherein the circuit board is disposed upright with respect to the conductor.3. The current measuring device according to claim 1 , wherein the circuit board is disposed within a plane of the conductor.4. The current measuring device according to claim 1 ,wherein:a pair of terminals are disposed upright on the conductor,wires of the circuit board and the respective pair of terminals are coupled together.5. The current measuring device according to claim 1 , further comprising a bus bar disposed between the first fixing means and the second fixing means. The present invention relates to a current measuring device.Simpler coupling structures are demanded for coupling a circuit board having a current sensing circuit formed thereon and a shunt resistor for sensing current. Meanwhile, circuit boards sometimes have isolation amplifiers mounted thereon, for example, but are also demanded to have a smaller size.Patent Literature 1, for example, describes a structure in ...

LIVE DETECTION METHOD AND APPARATUS FOR A HIGH-VOLTAGE SWITCH CABINET

Provided are a live detection method and apparatus for a high-voltage switch cabinet. The live detection apparatus for a high-voltage switch cabinet includes a robot body and a back-end server. The robot body includes a host module, a power module, a detection module and a motion module. The power module is electrically connected to the host module and the motion module. The host module is communicably connected to the motion module and the detection module. The detection module includes a visible light camera, an infrared thermal imager, an non-contacting ultrasonic sensor and an ultrahigh-frequency sensor. The motion module includes a horizontal motion module, a vertical motion module and a rotating motion module. The horizontal motion module includes a motor-driven carrier and a laser navigation system. The vertical motion module is secured to the motor-driven carrier. 1. A live detection apparatus for a high-voltage switch cabinet , comprising a robot body , whereinthe robot body comprises a host module, a power module, a detection module and a motion module, wherein the power module is electrically connected to the host module and the motion module, and the host module is communicably connected to the motion module and the detection module;the detection module comprises a visible light camera, an infrared thermal imager, a non-contacting ultrasonic sensor and an ultrahigh-frequency sensor; andthe motion module comprises a horizontal motion module, a vertical motion module and a rotating motion module, wherein the horizontal motion module comprises a motor-driven carrier and a laser navigation system, the vertical motion module is secured to the motor-driven carrier, the rotating motion module is secured to the vertical motion module, and the detection module is secured to the rotating motion module.2. The live detection apparatus for a high-voltage switch cabinet according to claim 1 , wherein the motor-driven carrier comprises two main front driving wheels ...

Voltage Detector Safety Glove

A safety glove for detecting the presence of a voltage has a pocket for receiving a voltage detector. An antenna or probe of the voltage detector may extend to a peripheral portion of the glove and may be covered by a piece of material. The voltage detector may be a non-contact type voltage detector sized to fit within the pocket.

SYSTEM INCLUDING AN INDICATOR RESPONSIVE TO AN ELECTRET FOR A POWER BUS

An indicator system for an alternating current power bus includes an electret operatively associated with the alternating current power bus. The electret includes an output having an alternating current voltage when the alternating current power bus is energized. A rectifier includes an input electrically interconnected with the output of the electret and an output having a direct current voltage responsive to the alternating current voltage of the output of the electret. An indicator includes an input electrically interconnected with the output of the rectifier and an indication output responsive to the direct current voltage of the output of the rectifier. 1. An indicator system for an alternating current power bus , said indicator system comprising:an electret operatively associated with said alternating current power bus, said electret comprising an output having an alternating current voltage when said alternating current power bus is energized; andan indicator comprising an input wired to the output of said electret such that said input is physically electrically interconnected with the output of said electret and an indication output responsive to the alternating current voltage of the output of said electret.2. The indicator system of wherein said electret is an electret device.3. The indicator system of wherein said electret is made of an electret material solution.4. The indicator system of wherein said electret is made of an organic polymer electret material.5. The indicator system of wherein said electret is made of an inorganic electret material.6. The indicator system of wherein said electret is coupled to said alternating current power bus.7. The indicator system of wherein said indicator is a visual indicator.8. The indicator system of wherein the indication output of said indicator is active responsive to the alternating current voltage of the output of said electret when said alternating current power bus is energized.9. The indicator system of ...

System and Method for Determining Power Status in a Metering Network

A system and method are provided for assessing whether a power outage has occurred at a meter location. The method comprises: maintaining, in a memory of a head-end system, information regarding the communication performance of a meter; receiving, by the head-end system, an indication of a power status of the meter; and determining a likelihood that a power outage has occurred at the meter location based on the information regarding the communication performance and the indication of the power status. 1. A method for assessing whether a power outage has occurred at a meter location , the method comprising:maintaining, in a memory of a head-end system comprising a data collection server, information regarding communication performance of a meter;receiving, by the head-end system, an indication of a power status of the meter;and determining a likelihood that a power outage has occurred at the meter location based on the information regarding the communication performance and the indication of the power status.2. The method recited in claim 1 , wherein the information regarding the communication performance comprises a predicted communication success rate between the meter and the head-end system during a power status check.3. The method recited in claim 2 , wherein the predicted communication success rate is based on at least one of the following: i.) attempts and failures to communicate with the meter claim 2 , ii.) time it takes to send and receive information to and from the meter claim 2 , iii.) time of day information claim 2 , iv.) time of season information claim 2 , and v.) time between frequency hops.4. The method recited in claim 1 , wherein the information regarding the communication performance comprises a predicted response time to a request from the head-end system to the meter.5. The method recited in claim 1 , wherein the information regarding the communication performance comprises a most recent power status of the meter during a power status check.6. ...

Method for Measuring the Presence of a High-Voltage and Establishing the Absence of Voltage

A method is provided for indicating a presence of a high voltage at a high-voltage component equipped in a vehicle. The method includes the steps of connecting an external reader to a communication bus of the vehicle, outputting a signal by way of the high-voltage component or by way of a component control unit which is connected to the high-voltage component, to the communication bus, wherein the signal indicates whether a high voltage is present at the high-voltage component, and reading the signal from the communications bus by way of the external reader.

Traceable cables

Traceable cables (e.g., networking cables, power cables, etc.). Some embodiments include a traceable power cable with a battery (e.g., that may be rechargeable from current from an external power source to which the power cable is electrically connected). Some embodiments include a traceable networking cable configured to draw power from power-over-Ethernet (POE) power sourcing equipment (PSE) even if the networking cable is not connected to a separate powered device (PD).

ELECTRIC TESTING DEVICE AND METHOD FOR HAND TOOLS HAVING TESTING MECHANISMS

The invention relates to a hand tool system having an electrical circuit testing indicator for use in a hand held tool used by technicians to determine electric circuit conditions. In a preferred embodiment, the indicator makes use of an electric circuit condition indicating means within a hand tool device having a plurality of bits and tool ends that, in use, will indicate information to determine the circuit condition (live circuit or not). Optionally, light, vibration, and audible indications may be provided to indicate the same information to a user. 1. A hand tool system comprising:a handle having a first end and a second end;a plurality of integral double-ended tool bit members;a shank having a proximate end disposed in said first end of said handle and a distal end; and a housing having one or more contacts extending from a bottom end of said housing, said contacts being adapted for engaging corresponding contacts within said handle;', 'an electrical circuit means for detecting the presence of electrical energy radiated from an external electrically conductive member when the contacts are proximate the external electrically conductive member even when in a non-contacting relation with the external electrically conductive member;', 'one or more lights being coupled to said housing, said lights being lit in a manner indicating a state of the electrical circuit; and', 'at least one power source coupled to said electrical circuit means, said contacts, and said one or more lights;, 'an electrical circuit test indicator comprisingwherein each of said test contacts extends through said bottom surface of said housing such that said contacts said corresponding contacts within said handle;wherein said shank comprises means for removably holding said plurality of integral double-ended tool bit members and comprising a unitary one-piece first cylindrical housing having oppositely disposed ends, a second unitary one-piece cylindrical housing having oppositely disposed ...

SWITCHING POWER SOURCE APPARATUS AND DIRECT-CURRENT POWER SOURCE APPARATUS

A switching power source apparatus includes: a synchronous rectifier switching element for synchronous rectification constituted of an insulated-gate field-effect transistor; and a secondary-side control circuit including a detector circuit and a timer circuit. The secondary-side control circuit performs ON/OFF control of the synchronous rectifier switching element. The detector circuit monitors a voltage of a drain terminal of the synchronous rectifier switching element, and detects an abnormal state in which the voltage of the drain terminal is undetectable. The timer circuit starts up and measures a predetermined time in response to the detector circuit detecting the abnormal state. When the detector circuit detects the abnormal state, and the predetermined time elapses according to the timer circuit, the secondary-side control circuit outputs a detection signal indicating an abnormality to outside. 1. A switching power source apparatus comprising:a transformer for voltage conversion;a main switching element connected to a primary-side coil of the transformer in series;a primary-side control circuit which performs ON/OFF control of the main switching element;a synchronous rectifier switching element for synchronous rectification connected to a secondary-side coil of the transformer in series; anda secondary-side control circuit which performs ON/OFF control of the synchronous rectifier switching element, whereinthe synchronous rectifier switching element is an insulated-gate field-effect transistor, a detector circuit which monitors a voltage of a drain terminal of the synchronous rectifier switching element, and detects an abnormal state in which the voltage of the drain terminal is undetectable; and', 'a timer circuit which starts up and measures a predetermined time in response to the detector circuit detecting the abnormal state, and, 'the secondary-side control circuit includeswhen the detector circuit detects the abnormal state, and the predetermined time ...

CONNECTOR DEVICE AND CONNECTOR CONNECTION DETERMINATION DEVICE

A connector device is provided, including a vehicle connector and a charging connector which are detachably connected to each other. The vehicle connector has electric power line terminals substantially coplanar with a flat connection surface and a plurality of signal line terminals which are arranged on a radial outside of the electric power line terminals The charging connector has electric power line terminals and a plurality of signal line terminals which are arranged substantially coplanar with a flat connection surface and are respectively in surface contact with the electric power line terminals and the plurality of signal line terminals during the connection with the vehicle connector. The connector connection determination device determines whether a connection state between the two connectors according to a detection result of whether the signal line terminals are in contact with each other when the charging connector is attached to the vehicle connector. 1. A connector device comprising a first connector and a second connector which are detachably connected to each other , whereinthe first connector comprises:a first connection surface which faces outward;first electric power line terminals which are arranged on the first connection surface substantially coplanar with the first connection surface; anda plurality of first signal line terminals which is arranged on the first connection surface substantially coplanar with the first connection surface and on a radial outside of the first electric power line terminals;the second connector comprises:a second connection surface which faces the first connection surface during a connection to the first connector;second electric power line terminals which are arranged on the second connection surface substantially coplanar with the second connection surface and are in surface contact with the first electric power line terminals during the connection to the first connector; anda plurality of second signal line ...

Electrical cable coupler with power indicator

Devices, systems, and techniques are described for providing an indication of the presence of an electrical voltage potential at one or more electrical conductors and/or electrical terminals received in an electrical coupler. Examples of electrical couplers include an illumination coupling comprising a front flange, a rear flange, and an illumination channel extending between the front flange and the rear flange and configured to encircle a portion of the electrical coupler. A plurality of illumination devices positioned at least partially within the illumination channel are configured to provide visible light emissions when illuminated that are indicative of the presence of an electrical voltage potential on at least one of the one or more electrical conductors and/or electrical terminals received within the electrical coupler.

VOLTAGE DETECTION CIRCUIT

To provide a voltage detection circuit in which the influence on a detection voltage by semiconductor manufacturing variations is small and which is small in current consumption. A voltage detection circuit is provided which detects a voltage, based on an output signal of a detection circuit and outputs a detection signal. The detection circuit includes a first MOS transistor unit which allows a first current to flow, a second MOS transistor unit which allows a second current to flow, and a current voltage conversion unit which converts each of the first current and the second current into a voltage and outputs the same as the detection signal. A voltage characteristic of the first current and a voltage characteristic of the second current are configured so as to be crossed with each other at a predetermined voltage. 1. A voltage detection circuit comprising:a detection circuit; andan output circuit which detects a voltage, based on an output signal of the detection circuit and outputs a detection signal,said detection circuit including a first MOS transistor unit which allows a first current to flow, a second MOS transistor unit which allows a second current to flow, and a current voltage conversion unit which converts each of the first current and the second current to a voltage and outputs the same to the output circuit as the detection signal,a voltage characteristic of the first current and a voltage characteristic of the second current being crossed with each other at a predetermined voltage.2. The voltage detection circuit according to claim 1 , wherein the first MOS transistor unit is comprised of a first NMOS transistor claim 1 ,wherein the second MOS transistor unit is comprised of a second NMOS transistor, andwherein the first NMOS transistor is longer in gate length and wider in gate width than the second NMOS transistor, and provided with a current difference due to a channel length modulation effect of each MOS transistor.3. The voltage detection ...

Method and Device for Detecting the Absence of Voltage

Method and device for determining the absence of voltage in electrical equipment. An installed device is electrically connected to a power source. The installed device has circuitry capable of detecting voltage, performing self-diagnostics, and testing for connectivity to the power source. In one embodiment, the device can also check to see if the voltage is at a deenergized level, recheck for continuity and repeat the self-diagnostics. In another embodiment, the installed device can be electrically connected to the line and load side of a disconnect and have circuitry configured to check the status of the disconnect. In another embodiment, the device can be configured to communicate with a portable reader in order to transfer information to the portable reader. In yet another embodiment, the device can be configured to interact with a controller that controls access to the panel in which the device is installed.

System for the Verification of the Absence of Voltage

A system for the verification of the absence of voltage includes a first impedance, an amplitude limiter electrically connected to the first impedance, a second impedance electrically connected to the first impedance and the amplitude limiter, a varactor circuit electrically connected to the second impedance, an isolation capacitor electrically connected to the second impedance and varactor circuit, an envelope circuit with a voltage detection circuit connected to the isolation circuit via a buffer, and an RF oscillator. The amplitude limiter configured to limit the voltage applied to the varactor circuit. The RF oscillator configured to interact with the varactor circuit in order to create a modulated circuit for the buffer and envelope circuit. The envelope circuit is configured to demodulate the signal for the voltage detection circuit.

CONTROL CIRCUIT FOR AC/DC CONVERTER

A control circuit for an AC/DC converter includes an AC detection circuit that periodically determines from a change in the AC input voltage whether AC voltage is being input and, upon determining that AC voltage is being input, outputs an AC detection signal that takes a HIGH level only for a prescribed duration; and an enable signal conversion circuit that filters the AC detection signal to generate the enable signal that is in a HIGH state when the AC detection signal is in the HIGH level and that becomes the LOW state after a prescribed time has passed since the AC detection signal becomes a LOW level unless the AC detection signal rises to the HIGH level again, thereby producing the enable signal that is more responsive. 1. A control circuit for an AC/DC converter that converts an AC input voltage to DC power output and supplies the DC power output to a load system , the load system being configured to receive an enable signal for enabling and disabling operations of the load system , the load system being shut down when the enabling signal is in a LOW state , the control circuit comprising:an AC detection circuit that periodically determines from a change in the AC input voltage whether AC voltage is being input and, upon determining that AC voltage is being input, outputs an AC detection signal that takes a HIGH level only for a prescribed duration; andan enable signal conversion circuit that filters the AC detection signal to generate the enable signal that is in a HIGH state when the AC detection signal is in the HIGH level and that becomes the LOW state after a prescribed time has passed since the AC detection signal becomes a LOW level unless the AC detection signal rises to the HIGH level again.2. The control circuit for the AC/DC converter according to claim 1 , wherein a HIGH level period of the prescribed duration for the AC detection signal is set by a timer claim 1 , and a starting time of the HIGH level period is set in accordance with detection of ...

TWELVE-PULSE AUTOTRANSFORMER RECTIFIER UNITS

A method and apparatus for detecting a missing phase in a 3-phase twelve-pulse autotransformer rectifier unit (ATRU) which, in use, receives a 3-phase input and delivers a nominal DC output on which a common-mode voltage is impressed. At least one of the frequency and amplitude of the common-mode voltage are monitored thereby to determine whether there is a missing phase in the input. The frequency and/or amplitude of the common-mode voltage may also be monitored thereby to determine whether there is a loss of input voltage. 1A method of detecting a missing phase in a 3-phase twelve-pulse autotransformer rectifier unit (ATRU) , the ATRU , in use , receiving a 3-phase input and delivering a rectified nominal DC output on which a common-mode voltage is impressed , the method comprising:monitoring at least one of a frequency or an amplitude of the common-mode voltage so as to determine whether there is a missing phase in the 3-phase input.2The method of claim 1 , wherein the frequency of the common-mode voltage is detected claim 1 , andwherein a missing phase event is determined if the frequency of the common-mode voltage is below a preset threshold frequency.3The method of claim 2 , wherein the frequency detection is effected using an analog circuit.4The method of claim 2 , wherein the frequency detection is effected using a digital circuit.5The method of claim 1 , wherein the amplitude of the common-mode voltage is detected claim 1 , andwherein a missing phase event is determined if the amplitude of the common-mode voltage exceeds a preset, threshold.6A method of detecting an input supply drop out in a 3-phase twelve-pulse autotransformer rectifier unit (ATRU) claim 1 , the ATRU claim 1 , in use claim 1 , receiving a 3-phase input and delivering a rectified nominal DC output on which a common-mode voltage is impressed claim 1 , the method comprising:monitoring at least one of a frequency or an amplitude of the common-mode voltage so as to determine whether there is ...

ELECTRICAL SAFETY MONITORING SYSTEM UTILIZING A HEARTBEAT SIGNAL INDICATIVE OF VOLTAGE PRESENT ON LINE INPUTS

An electrical safety monitoring system is provided. The system includes an analog circuit having line inputs for hardwiring an L an L an L and a GND three-phase connections, the analog circuit configured to monitor if voltage exists between any two of the line inputs, a heartbeat circuit electrically connected to the analog circuit to provide a heartbeat signal indicative of voltage present on any of the line inputs, an isolated voltage source electrically connected to the heartbeat circuit to power the heartbeat circuit with a VDC+ and a VDC−, and a logic circuit in operative communication with the heartbeat circuit for monitoring input from the heartbeat circuit and decoding the input from the heart beat circuit. The isolated voltage source may be supplied by a programmable logic controller (PLC) and the logic circuit may be implemented within the same PLC as a function block. 1. An electrical safety monitoring system comprising:a housing;a plurality of visual indicators operatively connected to the housing.{'b': 1', '2', '3, 'an analog circuit disposed within the housing and having line inputs for hardwiring a first line (L), a second line (L), a third line (L), and a ground (GND), wherein each of the line inputs is a three-phase connection, wherein the analog circuit is configured to monitor if voltage exists between any two of the line inputs and further configured to visually indicate presence or absence of voltage on each of the line inputs using the plurality of visual indicators operatively connected to the housing;'}{'b': 1', '2', '3, 'a heartbeat circuit electrically connected to the analog circuit to provide a heartbeat signal indicative of voltage present on any of the line inputs, the heartbeat signal encoding state information for each of the line inputs for the first line (L), the second line (L), the third line (L) and the ground (GND);'}an isolated voltage source electrically connected to the heartbeat circuit to power the heartbeat circuit with a ...

POWER BLACKOUT SENSING SYSTEM WITH A PHANTOM VOLTAGE DETECTOR INCLUDING A COUPLED INDUCTOR DEVICE

A power blackout sensing system includes: a voltage regulator configured to receive one of three phase wires and a neutral wire of a primary power source that provides an alternating current (AC) power; a sensing block configured to receive the neutral wire of the primary power source and comprising a coupled inductor device and a voltage sense amplifier; and a secondary power source. The voltage regulator is coupled to a switch and generates a direct current (DC) voltage signal. The coupled inductor device of the sensing block comprises a pull-down resistor, wherein the coupled inductor device is configured to convert a voltage signal of the neutral wire to a 180-degree phase-shifted voltage signal of the neutral wire and generate a reference voltage signal using the pull-down resistor. The voltage sense amplifier is configured to amplify a voltage gap between the 180-degree phase-shifted voltage signal of the neutral wire and the reference voltage signal. The sensing block detects a phantom voltage on the one of three phase wires and provides an output signal corresponding the secondary power source during a blackout period. 1. A power blackout sensing system comprising:a voltage regulator configured to receive one of three phase wires and a neutral wire of a primary power source that provides an alternating current (AC) power;a sensing block configured to receive the neutral wire of the primary power source and comprising a coupled inductor device and a voltage sense amplifier; anda secondary power source,wherein the voltage regulator is coupled to a switch and generates a direct current (DC) voltage signal, andwherein the coupled inductor device of the sensing block comprises a pull-down resistor, wherein the coupled inductor device is configured to convert a voltage signal of the neutral wire to a 180-degree phase-shifted voltage signal of the neutral wire and generate a reference voltage signal using the pull-down resistor,wherein the voltage sense amplifier ...

Shock detector

A shock detector for determining the existence of a voltage gradient in a body of water, which may be remote from a structure and providing an alarm when the voltage gradient comprises a hazardous electrical condition that could injure or kill are person coming into contact with the body of water. 1. An ungrounded battery powered shock detector comprising;a housing;a first water electrode for immersing in a body of water;a second water electrode for immersing in the body of water;a third water electrode for immersing in the body of water;a processer for measuring a voltage gradient between at least two of said water electrodes; andan alarm for alerting a person to the existence of a harmful voltage gradient in the body of water where the harmful voltage gradient is such that it could injure or electrocute a person.2. The ungrounded battery powered shock detector of where the shock detector is buoyant and self-righting as the shock detector floats in the body of water with of said water electrodes located on a bottom side of the shock detector and the alarm is located on a top side of the shock detector with each of said water electrodes in contact with the body of water as the battery powered shock detector floats in an upright position in the body of water.3. The ungrounded shock detector of claim I including a battery in the housing with the alarm providing at least four different alarm signals with each alarm signal dependent on a voltage of the battery and the voltage gradient in the body of water.4. The battery powered shock detector of wherein the shock detector provides an alarm signal dependent on the strength of the voltage gradient in the body of water.5. The battery powered shock detector of wherein after each alarm signal the processor measures the battery voltage to determine if the battery voltage is above an operating threshold.6. The battery powered shock detector of wherein the shock detector is a radio controlled shock detector with the radio ...

SYSTEMS AND METHODS FOR WEARABLE VOLTAGE DETECTION DEVICES

A voltage detection device for detecting proximity to an active alternating current (AC) voltage source is provided. The device includes a housing, at least one antenna configured to generate a signal in response to exposure to electromagnetic radiation, signal processing circuitry configured to process the signal generated by the at least one antenna, a processing device embedded in the housing and communicatively coupled to the signal processing circuitry, the processing device configured to determine, from the processed signal, whether the voltage detection device is proximate to the active AC voltage source, and an electronic switch embedded in the housing and one of included within the processing device and communicatively coupled to the processing device, the electronic switch configured to reduce an impact of interference on detection of the active AC voltage source. 1. A voltage detection device for detecting proximity to an active alternating current (AC) voltage source , said voltage detection device comprising:a housing sized and shaped to be worn by a user;at least one antenna embedded in said housing, said at least one antenna configured to generate a signal in response to exposure to electromagnetic radiation; at least one amplifier, each amplifier communicatively coupled to a different antenna of said at least one antenna and configured to amplify the signal generated by said antenna;', 'a first filter communicatively coupled to a single amplifier of said at least one amplifier and configured to filter the amplified signal output by said amplifier;', 'a second filter communicatively coupled to a single amplifier of said at least one amplifier and configured to filter the amplified signal output by said amplifier; and', 'a signal combiner communicatively coupled to each of said first and second filters, said signal combiner configured to combine the outputs of said first and second filters into a processed signal;, 'signal processing circuitry embedded ...

Shock Detector

A shock detector having an electrical detector having a set of water immersible electrodes for detecting hazardous water conditions through the determination of the presence of either an electrical current in a body of water, a voltage in the body of water or a voltage gradient in the body of water and then providing an alert to the existence of hazardous electrical conditions in the body of water which in some cases may transmitted to a power source to shut off a power source thereby removing the hazardous water condition.

Shock detector

A shock detector for determining the existence of a voltage gradient in a body of water, which may be remote from a structure and providing an alarm when the voltage gradient comprises a hazardous electrical condition that could injure or kill are person coming into contact with the body of water. 1. An ungrounded battery powered shock detector comprising;a housing;a first water electrode for immersing in a body of water;a second water electrode for immersing in the body of water;a third water electrode for immersing in the body of water;a processer for measuring a voltage gradient between at least two of said water electrodes; andan alarm for alerting a person to the existence of a harmful voltage gradient in the body of water where the harmful voltage gradient is such that it could injure or electrocute a person.2. The ungrounded battery powered shock detector of where the shock detector is buoyant and self-righting as the shock detector floats in the body of water with of said water electrodes located on a bottom side of the shock detector and the alarm is located on a top side of the shock detector with each of said water electrodes in contact with the body of water as the battery powered shock detector floats in an upright position in the body of water.3. The ungrounded shock detector of including a battery in the housing with the alarm providing at least four different alarm signals with each alarm signal dependent on a voltage of the battery and the voltage gradient in the body of water.4. The battery powered shock detector of wherein the shock detector provides an alarm signal dependent on the strength of the voltage gradient in the body of water.5. The battery powered shock detector of wherein after each alarm signal the processor measures the battery voltage to determine if the battery voltage is above an operating threshold.6. The battery powered shock detector of wherein the shock detector is a radio controlled shock detector with the radio controlled ...

WEARABLE ELECTRIC FIELD DETECTOR

A wearable electric field detector configured to be worn by a wearer in an environment includes inner and outer housings which are movable relative to each other between a closed position and an open position. When in the closed position, a body of the inner housing is concealed within the outer housing, and when in the open position, the body is partially visible to visually indicate that the detector is open. The detector includes field detection circuitry which is configured to detect voltage in an electric field in the environment around the wearer. The circuitry is in communication with at least one of a speaker and a light source which are configured to be activated by the field detection circuitry. 1. A wearable electric field detector configured to be worn by a wearer in an environment , comprising:an outer housing;an inner housing within the outer housing, the inner housing comprising a body and cap, the cap extending from the body and extending from the outer housing, the body defining a cavity therein which is closed by the cap, the inner housing being moveable relative to the outer housing, wherein the body is concealed within the outer housing when the inner housing is in a closed position, and the body is partially visible when the inner housing is in an open position;field detection circuitry provided within the cavity of the inner housing and configured to detect voltage in an electric field in the environment around the wearer; andat least one of a speaker and a light source mounted in the inner housing and in communication with the field detection circuitry and configured to be activated by the field detection circuitry.2. The wearable electric field detector of claim 1 , wherein the outer housing is a first color and the body is a second claim 1 , different color.3. The wearable electric field detector of claim 1 , wherein the inner housing slides relative to the outer housing.4. The wearable electric field detector of claim 1 , wherein the cap ...

Voltage Indicator with Continuity Check

A system for testing electrical continuity of a device to a source wherein there is at least one conductor connecting the device to the source can include a reference capacitive load, an oscillator, and a microprocessor. The oscillator is selectively connected to the reference capacitive load and each conductor connecting the device to the source such that the frequency output of the oscillator is a function of the selected capacitive load of the oscillator. Each conductor connecting the device to the source is connected to the oscillator such that when each one is selectively connected, the output of the oscillator is a function of that conductor's parasitic self-capacitance. The microprocessor can then compare the frequency of the signal generated when each conductor is connected to the oscillator with the frequency of the signal generated when the reference capacitive load is connected. 1. A system for testing the electrical continuity of a device to a source through a cable containing at least one conductor connecting the device to the source comprising:a reference capacitive load;an oscillator selectively connected to the reference capacitive load and to the at least one conductor, the oscillator configured such that a frequency output of the oscillator is a function of a selected capacitive load connected to the oscillator, the at least one conductor connected to the oscillator such that a frequency output of the oscillator when the at least one conductor is connected is a function of a parasitic self-capacitance of the at least one conductor; anda microprocessor connected to the oscillator, the microcontroller configured to compare a frequency output of a signal generated when the at least one conductor is selectively connected with a frequency output of a signal generated when the reference capacitive load is selectively connected.2. The system of claim 1 , wherein the cable further contains a reference conductor in addition to the at least one conductor and ...

APPARATUS AND METHOD FOR AN IMPROVED VOLTAGE DETECTOR

A voltage detector is presented. The voltage detector is a rod that has a handle at the proximal end. The distal end of the rod has a voltage probe. The voltage detector has an energy source and an indicator.

Shock detector

A shock detector having an electrical detector having a set of water immersible electrodes for detecting hazardous water conditions through the determination of the presence of either an electrical current in a body of water, a voltage in the body of water or a voltage gradient in the body of water and then providing an alert to the existence of hazardous electrical conditions in the body of water which in some cases may transmitted to a power source to shut off a power source thereby removing the hazardous water condition. 124-. (canceled)25. A shock detector for detecting a condition that can produce an electric shock in a body of water including:a housing;a ground electrode for engaging with soil surrounding a body of water;an electrical lead connecting said ground electrode to said shock detector;a water electrode for immersing in a body of water;a second electrical lead connecting said water electrode to said shock detector;a voltmeter located in said shock detector for measuring a voltage differential between the ground electrode and the water electrode to determine if the voltage differential is in excess of a dangerous threshold so that a flow of current through the body of a person in the body of water could cause electric shock drowning; andan alarm for alerting a person that the measured voltage between the ground electrode and the water electrode has exceeded the dangerous threshold that can kill or injure a person who enters the water.26. The shock detector of wherein the alarm includes a visual alarm and an audible alarm.27. The shock detector of wherein the electric shock detector includes a switch for turning off the visual alarm and a switch to turn off the audible alarm.28. The shock detector of wherein the shock detector monitors itself to send a signal in response to a deterioration of the performance of the shock detector.29. The shock detector of wherein the shock detector sends a signal to shut off a power source when the water contains a ...

Industrial plug with extraction of magnetic energy therein

The invention relates to an industrial plug with energy extraction, comprising a power cable and an energy extraction device ( 506, 507, 801, 802, 1001 ) such as that presented in FIG. 10/11. This plug has a wide range of uses covering the fields of georeferencing, localisation, lighting, identification, monitoring of variables, inter alia voltage presence, sound generation, capture of electromagnetic fields and energy accumulation in power cables.

PHASE OPERATION INDICATOR

An apparatus for phase operation indication includes a phase filter that filters a ground monitor signal from one or more phase conductors supplying power to a load and injects the ground monitor signal in an equipment grounding conductor run with the one or more phase conductors or receives the ground monitor signal from a signal generator and injects the ground monitor signal on the one or more phase conductors. The ground monitor signal includes a test frequency different than a line frequency of power supplied to the load. The apparatus includes at least one indicator circuit connected to at least one of the one or more phase conductors. An indicator circuit of a phase conductor provides a visual flashing signal in response to a voltage being present on the phase conductor, the at least one indicator circuit located at the phase filter. 1. An apparatus comprising: filters a ground monitor signal from one or more phase conductors supplying power to a load and injects the ground monitor signal in an equipment grounding conductor run with the one or more phase conductors; and', 'receives the ground monitor signal from a signal generator and injects the ground monitor signal on the one or more phase conductors, the ground monitor signal comprising a test frequency different than a line frequency of power supplied to the load; and, 'a phase filter that one ofat least one indicator circuit connected to one or more phases of the one or more phase conductors, an indicator circuit of a phase conductor providing a visual flashing signal in response to a voltage being present on the phase conductor, each indicator circuit of the at least one indicator circuits located at the phase filter.2. The apparatus of claim 1 , wherein the indicator circuit further comprises an indicator capacitor that receives charge from the connected phase conductor and a lamp circuit that discharges the indicator capacitor and provides light for the visual flashing in response to voltage across ...

Detection system for determining spark voltage

A detection system for determining spark voltage of a spark plug in a capacitive discharge ignition system is disclosed. The detection system may have a sensor circuit configured to detect occurrence of a spark by measuring a voltage on a low side of a primary coil. The detection system may also have an electronic control unit connected to the sensor circuit. The electronic control unit may be configured to receive a signal from the sensor circuit indicating that the voltage exceeded a threshold. The electronic control unit may be further configured to determine a spark time based on the signal, and determine a spark voltage based on the spark time.

Enhanced Circuit and Method for Detecting Hazardous Foreign Voltages on Conductors

A method of detecting the presence of a hazardous foreign voltage on a conductor includes the steps of sensing an electric field in the vicinity of the conductor with a first non-contact conductive sensor and sensing the electric field in the vicinity of the conductor with a second non-contact conductive sensor spaced a predetermined distance from the first non-contact conductive sensor. The difference between the electric field sensed by the first conductive sensor and the electric field sensed by the second conductive sensor is determined. The first conductive sensor preferably is shaped as a truncated spheroid. If the difference is less than a predetermined threshold, the sensed electric field is ignored as being induced by a distant source. If the difference is greater than a predetermined threshold, the electric field sensed by the first and second conductive sensors is considered to be indicative of the presence of a foreign voltage on the conductor. In that event, at least one alarm is activated as an alert to the presence of a foreign voltage on the conductor. 1. A method of detecting the presence of a hazardous alternating current foreign voltage on a conductor , the method comprising the steps of:(a) sensing an alternating electric field in the vicinity of the conductor with a first non-contact conductive sensor having a generally truncated spheroidal shape;(b) sensing the alternating electric field in the vicinity of the conductor with a second non-contact conductive sensor spaced a predetermined distance from the first non-contact conductive sensor and being shaped as a sleeve;(c) generating an alternating difference signal that is proportional to the difference between the alternating electric field sensed by the first conductive sensor and the alternating electric field sensed by the second conductive sensor;(d) if the alternating difference signal generated in step (c) exhibits a peak that is less than a predetermined threshold, considering the ...

Inductive voltage tester and method of using the same

An inductive voltage tester comprises a voltage tester body (100), a display window (110) disposed on the voltage tester body (100), a signal acquisition module (210), a microcontroller (220) and a display module (230) disposed in the voltage tester body (100). The signal acquisition module (210) is configured to acquire a voltage signal of an object to be tested. The display module (230) comprises a display unit (231) and a drive unit (233) configured to drive the display unit. The microcontroller (220) is coupled to the display module (230) and the signal acquisition module (210), respectively, to receive the voltage signal acquired by the signal acquisition module (210). The microcontroller (220) is further configured to control the drive unit (233) according to the voltage signal to enable the display module to display a mark indicating a working status or a non-working status in the display window (110).

METHOD AND APPARATUS FOR DISCRIMINATION OF SOURCES IN STRAY VOLTAGE DETECTION

A method and apparatus for discriminating between electric field sources. In one embodiment, the apparatus comprises a mobile detection system comprising a sensor probe for remotely measuring an electric field generated by an electric field source in a patrolled area; and a processor, coupled to the sensor probe, for processing data received from the sensor probe to generate a first field strength and at least a second field strength for determining whether the electric field source is potentially hazardous. 1. An apparatus for identifying hazardous electric field sources , the apparatus comprising: a sensor probe for measuring electric fields generated by one or more electric field sources proximate to the mobile detection system;', determining a ratio between first and second strength components of the electric fields, the first strength component at a first frequency and the second strength component at a second frequency; and', 'comparing the ratio with signatures of known electric field sources to determine whether a hazardous electric field exists; and, 'a processor for executing computer-executable instructions, stored on a memory coupled to the processor, the instructions comprising, 'a display that displays an indication of the hazardous electric field., 'a mobile detection system comprising2. The apparatus of claim 1 , wherein the first strength components are at one or more harmonics of a power distribution system's fundamental frequency.3. The apparatus of claim 2 , wherein the second strength components are at the power distribution system's fundamental frequency.4. The apparatus of claim 2 , wherein a first frequency from the one or more harmonics is a fundamental frequency of a power distribution system.5. The apparatus of claim 1 , wherein the first and second strength components of the electric fields measured by the sensor probe are at a plurality of harmonic frequencies claim 1 , 10order and lower.6. The apparatus of claim 1 , wherein the first ...

Apparatus and method for monitoring and controlling detection of stray voltage anomalies

Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field.

AUTOMATED TESTING OF EMERGENCY LIGHTS

The subject disclosure relates to an emergency lighting system for simulating power failure in an emergency lighting system. In some aspects, the system includes an interrupt relay coupled between a first power supply and a lighting array, a power monitoring module coupled between a second power supply and the lighting array, and a wireless transceiver configured for transacting data with a wireless backhaul gateway. Additionally, the lighting system can include a microcontroller configured to perform operations for receiving an interrupt command from the wireless backhaul gateway, toggling the interrupt relay in response to the interrupt command, wherein toggling the interrupt relay terminates power delivery to the lighting array, and measuring one or more power characteristics of the second power supply to determine if the second power supply can power the lighting array. Methods and machine-readable media are also provided. 1. A system for simulating power failure in an emergency lighting system , comprising:an interrupt relay coupled between a first power supply and a lighting array;a power monitoring module coupled between a second power supply and the lighting array;a wireless transceiver configured for transacting data with a wireless backhaul gateway; and receiving an interrupt command, via the wireless transceiver, from the wireless backhaul gateway;', 'toggling the interrupt relay in response to the interrupt command, wherein toggling the interrupt relay terminates power delivery to the lighting array; and', 'measuring one or more power characteristics of the second power supply to determine if the second power supply can power the lighting array., 'a microcontroller coupled to the power monitoring module, the interrupt relay, and the wireless transceiver, wherein the microcontroller is configured to perform operations for2. The system of claim 1 , wherein the microcontroller is further configured to perform operations comprising:transmitting data ...

APPARATUS AND METHOD FOR MONITORING AND CONTROLLING DETECTION OF STRAY VOLTAGE ANOMALIES

Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field. 1. An apparatus for identifying a hazardously energized object , the apparatus comprising:a motor vehicle;one or more sensor probes that detect electric field proximate the motor vehicle and provide an analog signal corresponding to the electric field as the motor vehicle moves past a potentially hazardously energized object,a signal converter that generates a digital signal from the analog signal; anda display that displays a change in the digital signal that exceeds a threshold change, the change indicating that a hazardously energized object is passed near-field.2. The apparatus of claim 1 , wherein the signal converter is an analog to digital converter that provides a transformation of the analog signal claim 1 , the transformation comprising a plurality of time domain samples claim 1 , each sample representing an amplitude of the electric field.3. The apparatus of claim 2 , further comprising:a signal processor that filters the plurality of time domain samples according to a desired frequency pertaining to a hazardously energized object and that provides a second signal representing a magnitude of the electric field at the desired frequency,wherein the apparatus further comprises a computer to receive the second signal and to provide an indication of strength of the electric field at the desired frequency.4. The apparatus of claim 3 , ...

APPARATUS AND METHOD FOR MONITORING AND CONTROLLING DETECTION OF STRAY VOLTAGE ANOMALIES

Apparatus and methods for detecting stray voltage anomalies in electric fields are provided herein. In some embodiments, an apparatus for detecting an electrical field may comprise: at least one sensor probe for generating data corresponding to an electrical field detected by the at least one sensor probe, wherein the at least one sensor probe comprises at least one electrode; a processor, coupled to the at least one sensor probe, for analyzing the data to identify a voltage anomaly in the electric field; and an indicator, coupled to the processor, for alerting a user to a presence of the voltage anomaly in the electric field. 1. A mobile apparatus mounted to a motor vehicle for identifying a hazardously energized object , the mobile apparatus comprising:one or more sensor probes that detect electric field and provide an analog signal corresponding to the electric field;a signal converter for generating a digital signal from the analog signal; andone or more audio devices that emit a continuous pitch audio tone commensurate with a rise, peak and fall of the digital signal when the mobile apparatus moves past the hazardously energized object.2. The apparatus of claim 1 , wherein parameters of the mobile apparatus are variable to account for background noise in the electric field and false alarms.3. The apparatus of claim 1 , wherein the signal converter is an analog to digital converter that digitizes the analog signal to provide a transformation of the analog signal claim 1 , the transformation comprising a plurality of time domain samples claim 1 , each sample representing an amplitude of the electric field.4. The apparatus of claim 3 , further comprising:a signal processor that filters the plurality of time domain samples according to a desired frequency pertaining to the hazardously energized object and to provide a second signal representing a magnitude of the electric field at the desired frequency; andwherein the apparatus further comprises a computer to ...