Electric network protection system

... 960,931. Protective systems &c. CHARBONNAGES DE FRANCE. Jan. 9, 1962 [Jan. 10, 1961 ; Nov. 13, 1961], No. 841/62. Heading H2K. A protective system for a D.C. or single-phase A.C. network comprises means 9 . . . 11 for injecting a high frequency monitoring current into a protected line 1, a device 12, 13 responsive to the magnitude of the monitoring current and effective to trip a circuit-breaker 3, an auxiliary line L, coupling circuits r 1 . . . r 3 arranged between the lines 1, 2 at substantially regular intervals so as to define a series of sections, and capacitors for tuning each of the sections to the frequency of the monitoring current. In the arrangement shown, the coupling circuits are resistors which diminish in value as the distances of the coupling circuits from the supply source increases so that the sensitivity of the system is substantially constant irrespective of the situation of a fault to earth. The capacitors may be arranged in the auxiliary line L as shown or in the ...

Means for protecting electrical installations, particularly heavy current installations

ELECTRICAL SUPPLY NETWORK WORK WITH KURZSCHLUSSUND INTERRUPTION DETECTION FOR ELECTRICAL SYSTEMS OF MOTOR VEHICLES

PROCEDURE AND DEVICE FOR THE RECOGNITION AND DETECTION OF HIGH IMPEDANCE SINGLE-POLE ERDFEHLERN

DEVICE FOR PROTECTING ELECTRICAL NETWORKS

The invention relates to a device comprising at least one first portion (1) for detecting an electrical defect arising in a power grid, and a second portion (2) comprising at least one switch (5) connecting said power grid to a power supply source (4), the first portion (1) comprising at least one reflectometric detection system capable of being coupled with the power grid. Said system detects and analyzes impedance changes arising in the power grid, a signal being sent by said system to turn on the switch (5) when a detected impedance change is considered by said system to be an electrical defect.

SMART SENSOR NETWORK FOR POWER GRID HEALTH MONITORING

A smart sensor network for power grid health monitoring includes a plurality of spaced sensors that are magnetically coupled to the power transmission line to be monitored. The sensors include a signal injection unit and a signal sensing unit. As such, one of the sensors acts to inject, via its signal injection unit, a high frequency signal through the magnetic coupling into the power transmission line, while sensors on either side of the signal injecting sensor act to block the injected signal, which is then detected by the signal sensing unit of the injecting sensor, and is used to measure the impedance of the power transmission line segment being analyzed. Based on the difference between a pre-measured impedance of the power transmission line being monitored and the actual impedance value of the power transmission line being measured by the sensor, the health of the power line can be obtained.

SENSITIVE DC CURRENT IMBALANCE DETECTOR AND CALIBRATION METHOD

A current leakage detector (100) is configured for detecting current leakage between a power source and a load. The current leakage detector (100) includes a first sensing coil (122) and a second sensing coil (124) positioned opposite the first sensing coil (122). The current leakage detector (100) further includes a magnetic field sensor (126) proximate the first sensing coil (122) and the second sensing coil (124) and the magnetic field sensor has a response range. The current leakage detector also includes a bias circuit (132) configured to adjust the response range of the magnetic field sensor. A method for detecting current leakage includes the steps of providing a first sensing coil (122) and a second sensing coil (124). The method continues with the steps of providing a magnetic field sensor in proximity to the first and second sensing coils and providing a bias circuit. The method continues with the step of utilizing the bias circuit to place the response of the magnetic field sensor ...

VOLTAGE SENSING ARRANGEMENT

A voltage sensing arrangement is provided that facilitates accurately measuring a sensed voltage while also providing isolation to a sensing path during a test mode of an associated indicator arrangement. The voltage sensing arrangement includes a voltage sensor that is arranged to sense the voltage on an associated power distribution line. A first arrangement is responsive to the voltage sensor for providing an output representing the voltage on the associated power distribution line. The voltage sensing arrangement includes a second arrangement that is responsive to the voltage sensor for isolating the first arrangement from the voltage sensor whenever voltage is not present on the associated power distribution line. In a preferred embodiment, a third arrangement is provided that is responsive to the presence of voltage on the associated power distribution line for isolating a test path from the voltage sensor.

Schaltungsanordnung zur kontaktlosen Überwachung von Verbraucherstromkreisen

Fault location using traveling waves

Protection of the electricals appliance against shorts-circuit internal

Improvements with the processes and devices of injection of current of monitoring in the electrical communications

Improvements brought to the installations including/understanding of the systems like the circuit-stoppers, more especially for grid systems of energy

Process of protection of the electrical communications and installations comprising application of the known as process

계전 유닛, 계전 유닛의 제어 방법

... 계전 유닛에 있어서의 노멀리 클로즈 접점의 모니터의 신뢰성을 높인다. 비통전 상태 시에, 노멀리 클로즈 접점(b1·b2)에 진단 신호를 송신하고, 또한 송신된 진단 신호의 귀환 상황의 검출을 행하여, 이 검출의 결과가 소정 조건을 만족시키지 못하는 경우는, 진단 신호를 재송신하고, 또한 재송신된 진단 신호의 귀환 상황의 재검출을 행하고, 이 재검출의 결과가 소정 조건을 만족시키는 경우에 정상이라고 판정한다.

CAMERA SYSTEM INCLUDING A SAFETY CIRCUIT

Camera systems are often built up from a base station, a detachable cable, and a camera. A dangerous situation may arise the moment the cable is detached from the camera because there is (still) a voltage present on the cable. The invention provides a camera system in which this problem is solved by means of a safety circuit capable of detecting from the base station whether a camera is connected to the cable or not.

LED DRIVE DEVICE

An LED drive device that drives and lights on an LED includes: a power conversion device that converts a voltage of a first power supply, and supplies the voltage to the LED; a second power supply having a voltage lower than a threshold voltage of the LED; a current generation unit that generates current using the voltage of the second power supply, and supplies generated current to an anode of the LED; and a ground-fault detection unit that determines that a ground fault does not occur at the anode of the LED when current does not flow from the current generation unit, and determines that the ground fault occurs at the anode of the LED when current flows from the current generation unit.

ELECTRICAL SAFETY APPARATUS

Safety apparatus, for protecting users of electricity against exposure to electrical shock, comprises an electrical cutout C responsive to severing of a cable F. A high frequency signal from a transmitter D normally reaches a receiver B which maintains cutout C closed. If the signal is not produced or not received, the receiver B changes state and cutout C opens. A filter A prevents the HF signal from reaching the supply E. The system is suitable for 2-core or 3-core cable. ...

Loss of mains protection relay

Improvements in or relating to systems for protection of an electric network by highspeed current cut-off

... 927,167. Protective cut-out arrangements. CHARBONNAGES DE FRANCE. Oct. 28, 1959 [Oct. 28, 1958], No. 36657/59. Class 38 (5). A protective system comprises means 34 for injecting high-frequency current into a protected power supply network R and current transformers 35 connected to a detection circuit 36 which responds to an abnormally high high-frequency current due to a shortcircuit and effects the operation of a highspeed. cut-out device C to interrupt the power supply to the network. In a three-phase arrangement as shown, the device C may comprise three single phase cut-outs each having a conductor which is ruptured by an explosive charge when an igniter is energized by the circuit 36, the cut-outs being those of Specification 927,169 [Group XXXVI]. Specification 866,031 also is referred to.

Improvements in or relating to protection systems for electric networks comprising cables

... 927,168. Protective cut-out arrangements; electrically-released switches. CHARBONNAGES DE FRANCE. Oct. 28, 1959 [Oct. 28, 1958; Aug. 26, 1959], No. 36658/59. Class 38 (5). [Also in Group XXXVI] A protective arrangement includes a cable having two conducting sheaths 43, 44 connected to a Wheatstone bridge circuit effective on contact between the sheaths, due to crushing or shearing forces on the cable, to cause the operation of a high-speed cut-out or cut-outs 53 in circuit with the main conductors 54 ... 56 of the cable. In the arrangement of Fig. 2, contact between the sheaths 43, 44 shortcircuits a resistor 47 of the Wheatstone bridge 46 ... 49 so unbalancing the bridge and causing the application of a signal to an amplifier 51 which energizes the igniter circuits of explosive cut-outs such as those of Specification 927,169 [Group XXXVI]. A signal is also applied to an amplifier 52, which over the sheath 43 and a pilot conductor 56b, energizes the igniter of a device 57 to explode a charge ...

FAULT CURRENT PROTECTION DEVICE WITH FREQUENCY GENERATOR

Switching configuration for the contactless monitoring of Verbraucherstromkreisen

GFI CIRCUIT

System and method for high voltage cable detection in hybrid vehicles

A system and method described herein detects the presence of an unconnected condition in high voltage component cables in an electric or hybrid-electric vehicle having a high voltage battery or energy storage system. The system includes a DC-DC converter which is capable of operating in either a step-down mode (e.g., as a buck converter) or a boost mode. The system uses the DC-DC converter operating in boost mode to create a sufficient, yet safe, measuring voltage on the main high voltage cabling of the vehicle before allowing the energy storage system to begin supplying high voltage power to the system components. The measurements are taken at various points near the individual components to determine if the cable has become disconnected.

Smart Sensor Network for Power Grid Health Monitoring

A smart sensor network for power grid health monitoring includes a plurality of spaced sensors that are magnetically coupled to the power transmission line to be monitored. The sensors include a signal injection unit 5 and a signal sensing unit. As such, one of the sensors acts to inject, via its signal injection unit, a high frequency signal through the magnetic coupling into the power transmission line, while sensors on either side of the signal injecting sensor act to block the injected signal, which is then detected by the signal sensing unit of the injecting sensor, and is used to measure the 10 impedance of the power transmission line segment being analyzed. Based on the difference between a pre-measured impedance of the power transmission line being monitored and the actual impedance value of the power transmission line being measured by the sensor, the health of the power line can be obtained. -17- _Se 'Nil z CC) E - 0 - & / 0 zI CI ...

System and method for high voltage cable detection in hybrid vehicles

A system and method described herein detects the presence of an unconnected condition in high voltage component cables in an electric or hybrid-electric vehicle having a high voltage battery or energy storage system. The system includes a DC-DC converter which is capable of operating in either a step-down mode (e.g., as a buck converter) or a boost mode. The system uses the DC-DC converter operating in boost mode to create a sufficient, yet safe, measuring voltage on the main high voltage cabling of the vehicle before allowing the energy storage system to begin supplying high voltage power to the system components. The measurements are taken at various points near the individual components to determine if the cable has become disconnected.

GROUND INTEGRITY MONITOR FOR ELECTRICAL APPARATUS

GROUND INTEGRITY MONITOR FOR ELECTRICAL APPARATUS The ground and neutral terminals of a three-wire grounded AC power source for electrical apparatus, such as the control system of a motor operated hospital bed, are both normally connected to earth ground. The integrity or continuity of the ground connection is constantly monitored by applying, between the neutral and ground terminals, sharp narrow pulses periodically recurring at a relatively low pulse repetition frequency. When the resistance in the neutral/ground circuit is less than a predetermined threshold level, the pulsing causes an LED photo coupler to flash and this in turn produces a control signal for maintaining the electrical apparatus coupled to the AC power source. When the resistance between the neutral and ground terminals exceeds the threshold level, the AC power supplied to the apparatus is interrupted.

SYSTEM AND METHOD FOR HIGH VOLTAGE CABLE DETECTION IN HYBRID VEHICLES

A system and method described herein detects the presence of an unconnected condition in high voltage component cables in an electric or hybrid-electric vehicle having a high voltage battery or energy storage system. The system includes a DC-DC converter which is capable of operating in either a step-down mode (e.g., as a buck converter) or a boost mode. The system uses the DC-DC converter operating in boost mode to create a sufficient, yet safe, measuring voltage on the main high voltage cabling of the vehicle before allowing the energy storage system to begin supplying high voltage power to the system components. The measurements are taken at various points near the individual components to determine if the cable has become disconnected.

SMART SENSOR NETWORK FOR POWER GRID HEALTH MONITORING

A smart sensor network for power grid health monitoring includes a plurality of spaced sensors that are magnetically coupled to the power transmission line to be monitored. The sensors include a signal injection unit and a signal sensing unit. As such, one of the sensors acts to inject, via its signal injection unit, a high frequency signal through the magnetic coupling into the power transmission line, while sensors on either side of the signal injecting sensor act to block the injected signal, which is then detected by the signal sensing unit of the injecting sensor, and is used to measure the impedance of the power transmission line segment being analyzed. Based on the difference between a pre-measured impedance of the power transmission line being monitored and the actual impedance value of the power transmission line being measured by the sensor, the health of the power line can be obtained.

Low-voltage inverse-time leakage protection method

Relay of protection of electrical communications

Selective safety device

Improvements brought to the processes and systems for the selective protection of the networks, in particular for the networks of electric traction

DEVICE FOR PROTECTING ELECTRICAL NETWORKS

Le dispositif comporte au moins une première partie (1) destinée à détecter un défaut électrique survenant dans un réseau et une deuxième partie (2) comportant au moins un interrupteur (5) reliant ledit réseau à une source d'alimentation électrique (4), la première partie (1) comportant au moins un système de détection par réflectométrie apte à être couplé au réseau, ledit système détectant et analysant les modifications d'impédances survenant dans le réseau, un signal étant envoyé par ledit système pour déclencher l'ouverture de l'interrupteur (5) lorsqu'une modification d'impédance détectée est considérée par ledit système comme un défaut électrique. The device comprises at least a first part (1) intended to detect an electrical fault occurring in a network and a second part (2) comprising at least one switch (5) connecting said network to a power supply (4), the first part (1) comprising at least one reflectometry detection system capable of being coupled to the network, said system detecting and analyzing the impedance modifications occurring in the network, a signal being sent by said system to trigger the opening of the switch (5) when a detected impedance change is considered by said system as an electrical fault.

Frequency based fault detection

A electrical circuit includes an excitation voltage connected via a first circuit path to an output, a switching device SW having a control terminal and first and second controlled terminals connected to the first circuit path, and a controller 14 that generates a control signal provided to the control terminal of the switching device to selectively supply the excitation voltage to the output. Faults in the electrical circuit are detected by monitoring the switching device voltage at one of the controlled terminals of the switching device.

СИСТЕМА И СПОСОБ ДЛЯ ОПРЕДЕЛЕНИЯ МЕСТОПОЛОЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ В ЭЛЕКТРИЧЕСКИХ СЕТЯХ

SCHNELLSTABSCHALTVORRICHTUNG FUER ELEKTRISCHE STROMKREISE.

Kamerasystem mit einer Sicherheitsschaltung

Kamerasystem mit einer Basisstation und einer Kamera, die über ein lösbares Kabel mit der Basisstation verbunden ist, wobei das Kabel wenigstens zwei Leiter aufweist, dadurch gekennzeichnet, dass die Basisstation Betriebsspannungsmittel zur Abgabe einer Gleichspannungsbetriebsspannung an die beiden Leiter, einen gesteuerten Schalter (S) für die Verbindung oder die Nicht-Verbindung der Betriebsspannungsmittel mit den Leitern, einen Strominjektor (AC-INJ), der parallel zu den beiden Leitern liegt, wobei der Strominjektor einen Wechselstrom mit einer vorbestimmten Frequenz liefert, einen Stromdetektor (AC-DET), der parallel zu den beiden Leitern liegt, wobei der Stromdetektor den Wechselstrom mit der vorbestimmten Frequenz misst, und eine Impedanz (Z, Z2) zwischen den Betriebsspannungsmitteln und den Verbindungspunkten des Strominjektors und des Detektors aufweist, wobei die Impedanz für Gleichstrom niederohmig und für den Wechselstrom mit der vorbestimmten Frequenz hochohmig ist, die Kamera ...

Improvements in protective arrangements for electrical systems

VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG UND ORTUNG VON HOCHOHMIGEN EINPOLIGEN ERDFEHLERN

ALARM CIRCUIT FOR MONITORING THE PRIMARY WINDING OF A NEUTRALIZING TRANSFORMER AND ITS GROUNDING CONNECTION

MONITOR DEVICE, GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES

A fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end. The fault protection arrangement may include a neutral grounding resistance monitor assembly, coupled to the neutral grounding resistor, where the neutral grounding resistance monitor assembly includes a sense circuit, coupled to the ground end of the neutral grounding resistor; and an injection signal generator, arranged to generate a frequency of 240 Hz or greater.

FAULT IDENTIFICATION AND ISOLATION IN AN ELECTRIC PROPULSION SYSTEM

An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises a plurality of branch isolation devices that are configured to isolate the at least one branch from the power source in response to a fault current at the at least one branch. In addition, the at least one branch comprises a respective pair of zone isolation devices for each respective zone from the one or more zones. The respective pair of zone isolation devices for each respective zone is configured to isolate the respective zone from the at least one branch, during a test of the at least one branch for identifying which of the one or more zones is a source of the fault current.

Electrical protective device and method for selective disconnection of subsystem in case of second fault in IT power supply system

Process and device for the detection of defects in the grid systems of electrical energy

POWER FEED ARRANGEMENT FOR COMMUNICATION SYSTEMS

계전 유닛, 계전 유닛의 제어 방법

계전 유닛에 있어서의 노멀리 클로즈 접점의 모니터의 신뢰성을 높인다. 비통전 상태 시에, 상기 제1 노멀리 클로즈 접점에 제1 진단 신호를 송신하고, 또한 송신한 제1 진단 신호의 귀환 상황의 검출을 행하고, 상기 제2 노멀리 클로즈 접점에 제1 진단 신호와는 다른 제2 진단 신호를 송신하고, 또한 송신한 제2 진단 신호의 귀환 상황의 검출을 행하고, 제1 진단 신호의 귀환 상황의 검출의 결과가 제1 소정 조건을 만족시키지 않는 것과, 제2 진단 신호의 귀환 상황의 검출의 결과가 제1 소정 조건과는 다른 제2 소정 조건을 만족시키지 않는 것 중 적어도 한쪽이 발생한 경우에 이상이라고 판정한다. Thereby enhancing the reliability of the monitor of the normally closed contact in the relay unit. In the non-conduction state, a first diagnostic signal is transmitted to the first normally closed contact and a feedback state of the transmitted first diagnostic signal is detected, and a second diagnostic signal is sent to the second normally closed contact The second diagnostic signal is transmitted and the feedback status of the transmitted second diagnostic signal is detected and the result of detection of the feedback status of the first diagnostic signal does not satisfy the first predetermined condition, It is determined that there is an abnormality when at least one of a result of detection of the feedback state of the signal does not satisfy the second predetermined condition different from the first predetermined condition.

METHOD AND DEVICE FOR IDENTIFYING AND LOCALISING HIGH-OHM, SINGLE-POLE EARTH FAULTS

The invention relates to a method and a device for carrying out the latter, for selectively identifying and localising high-ohm, single-pole earth faults in neutral-point compensated electric supply networks. According to the invention, at least one auxiliary signal with the network frequency ωNis supplied to the zero current system of the network. The auxiliary signal is supplied in such a specific way, that the neutral-point biasing voltage Une(ωN) is substantially compensated at the network frequency ωN. The identification and localisation of high-ohm, single-pole earth faults is thus carried out at a compensated neutral-point biasing voltage Une(ωN). The invention also relates to a method, according to which the earth-fault neutraliser can be tuned to the supply network even at a compensated neutral-point biasing voltage Une(ωN).

MONITOR DEVICE, GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES

A fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end. The fault protection arrangement may include a neutral grounding resistance monitor assembly, coupled to the neutral grounding resistor, where the neutral grounding resistance monitor assembly includes a sense circuit, coupled to the ground end of the neutral grounding resistor; and an injection signal generator, arranged to generate a frequency of 240 Hz or greater.

Frequency hopping ground monitor current sensing

An apparatus includes a signal generation module that injects a signal in a pilot conductor with one or more AC components. The pilot conductor is connected to a grounding conductor of power cables connecting a power source to a load. A frequency change module periodically changes a frequency of each of the AC components, a current monitor module monitors current in the pilot conductor or ground return, an AC detection module determines an AC current for each AC component, and an AC threshold module determines if one or more of the AC currents determined by the AC detection module is below an AC threshold. A trip module opens a contact in response to determining that at least one of the AC currents is below an AC threshold for longer than an AC current time threshold. The contact disconnects the power source from the set of power cables.

Selektivschutzeinrichtung fuer elektrische Anlagen

VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG UND ORTUNG VON HOCHOHMIGEN EINPOLIGEN ERDFEHLERN

System and method for locating earth fault in power grids

In a multi-phase power grid fed by a power source, earth fault (460) is located by means of a power supply source synchronized with the power grid, which is connected between a zero point of the grid and earth. In a fault current compensation mode (420), a control unit controls the alternating voltage source to compensate for any ground fault current in the power grid to a value below a threshold level. In a fault detecting mode (430), the control unit gradually adjusts the output voltage of the alternating voltage source with respect to amplitude and/or phase angle (440). A change of zero-sequence current and zero-sequence admittance between the alternating voltage source and a fault location is measured (450) by means of at least one detector. The at least one detector is communicatively connected to the control unit and reports recorded measured values representing zero-sequence current and/or zero-sequence admittance to the control unit. In the fault detecting mode, the control unit ...

GROUND MONITORING SYSTEM

MONITOR DEVICE, GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES

A neutral grounding resistor fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non-ground end of the neutral grounding resistor; and a neutral grounding monitor, coupled to the non-ground end of the neutral grounding resistor, the neutral grounding monitor comprising an injection signal generator, the injection signal generator arranged to generate a frequency of 240 Hz or greater.

Improvements with and the protection control devices of the electrical circuits

Device allowing the setting except circuit automatic of a comportantau installation less one generator and related to a section of network laid out out of antenna

Anordning för strömbegränsning och skydd mot fel i en ström

ELECTRONIC DEVICE WITH OVERCURRENT PROTECTION AND METHOD FOR OVERCURRENT PROTECTION

An electronic device having an overcurrent protection function is provided. The electronic device includes at least one power converter, the at least one power converter including a power conversion unit to convert input voltage or input current to supply output current, a control unit to adjust the output current, and an overcurrent protection unit to detect the output current and transmit a detection result to the control unit, and wherein the overcurrent protection unit includes an overcurrent extraction module to output a difference between the output current exceeding designated first reference current and the first reference current; a calculation module to calculate an accumulative value obtained by integrating the difference with respect to time, and a first comparison module to compare the accumulative value with a designated critical value and to transmit a first detection result in which the accumulative value exceeds the critical value to the control unit.

Circuit for the power supply of a multitude of consumers

LADUNGSSTEUERSCHALTUNG

SCHALTUNGSANORDNUNG ZUR FESTSTELLUNG VON FEHLERN BEI DER TEMPERATURREGELUNG EINER HEIZWALZE EINES ELEKTROFOTOGRAFISCHEN KOPIERGERAETES

Schaltungsanordnung zur kontaktlosen UEberwachung von Verbraucherstromkreisen

Process of protection of the electrical communications and installations comprising application of the known as process

Relay of protection of electrical communications

Assembly for the protection of lines with high tension current against disturbances of service

Pre-emptive circuit breaker with arc fault and fault lockout short circuit protection

Fault abatement circuit breaker for providing protection of critical loads. The circuit breaker provides both arc fault protection and fault lockout protection in one integrated circuit breaker. The fault lockout protection reduces the risk of short circuit damage by predicting and preventing the event. The arc fault protection trips the circuit breaker when arcing is sensed. The integrated circuit thus provides for a minimum of short circuit damage, thereby maximizing process and/or equipment up time.

LOAD DRIVING CIRCUIT

Patent RU2018145025A3

`”ВУ“” 2018145025” АЗ Дата публикации: 30.06.2020 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2018145025/07(075285) 16.05.2017 РСТ/$Е2017/050506 16.05.2017 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 1650686-7 20.05.2016 эВ Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) СИСТЕМА И СПОСОБ ДЛЯ ОПРЕДЕЛЕНИЯ МЕСТОПОЛОЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ В ЭЛЕКТРИЧЕСКИХ СЕТЯХ Заявитель: СВИДИШ НЬЮТРАЛ АБ, ЗЕ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) НоО2Н 3/17 (2006.01) СОК 31/08 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) НО2Н 3/00, 3/17, СОК 31/00, 31/08 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепе Соозе Раб Раеагсв, КОРТО, ОРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* ...

СПОСОБ АДАПТАЦИИ ОБНАРУЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ

FIELD: electricity. SUBSTANCE: electrical machine is in the first state of the machine, the first reference value is determined for measured values of electrical quantity. Detection of ground short-circuit includes continuous measurement of electrical quantity in the winding and detection of ground short-circuit based on the measured values of electrical quantity and the first reference value. The method includes receipt of signal (101, 102), detection of the machine state changing based on the received signal (120) and changing to the second reference value for electrical machine when change in the machine state is detected, at that the second reference value differs from the first reference value (100). EFFECT: improved accuracy of ground short circuit detection when working state of the machine changes. 9 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 544 267 C1 (51) МПК G01R 31/06 (2006.01) G01R 31/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013144401/28, 03.03.2011 (24) Дата начала отсчета срока действия патента: 03.03.2011 (73) Патентообладатель(и): АББ РИСЕРЧ ЛТД (CH) (45) Опубликовано: 20.03.2015 Бюл. № 8 R U Приоритет(ы): (22) Дата подачи заявки: 03.03.2011 (72) Автор(ы): ЙОХАНССОН Хенрик (SE), МЕНЕЗЕС Йозеф (SE), РОКСЕНБОРГ Стефан (SE), БЕНГТССОН Торд (SE) (56) Список документов, цитированных в отчете о поиске: US 5508620, 16.04.1996 . US 4833564, (85) Дата начала рассмотрения заявки PCT на национальной фазе: 03.10.2013 (86) Заявка PCT: EP 2011/053232 (03.03.2011) 2 5 4 4 2 6 7 23.05.1989. WO 9919963 A1, 22.04.1999 . WO 2010069739 A1, 24.06.2010 . SU 1661898 A1, 07.07.1991 2 5 4 4 2 6 7 R U WO 2012/116757 (07.09.2012) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ АДАПТАЦИИ ОБНАРУЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ (57) Реферат: Изобретение относится к способу адаптации содержит прием сигнала (101, ...

Improvements in or relating to electrical circuit protection systems for power distribution and like networks

... 637,392. Protective cut-out systems; sparking-preventing in switches. FORMAN, J. July 18, 1947, No. 19346. [Class 38 (v)] In a protective system for a power line 1, two standing waves of different high-frequencies not in harmonic relation are set up by crystalcontrolled oscillators 4, 5. The couplings 6, 10, and 7, 11 are so adjusted as to form nodal points and so normally no high-frequency voltage is applied to the rectifiers 12, 13. On fault, however, e.g. at 19, voltages are applied to the rectifiers and the voltage across a resistance 16 is applied to a triode 20, the grid 22 of which is normally cut-off and receives pulses every half-cycle of the power frequency from a D.C.- saturated transformer 28, 29, 33. The anode current of valve 20 is thus in the form of pulses which are applied to a transformer 27 which causes the circuit-breaker 3 to be tripped, preferably as described in Specification 637,393. The timing of the pulses applied to the grid 22 is adjustable at 27a so as to trip ...

Radio frequency apparatus

... 353,104. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. -(Assignees of Fitzgerald, A. S. ; 1212, Union Street, Schenectady, New York, U.S.A.) April 30, 1930, No. 13347. Convention date, April 30, 1929. [Class 38 (v).] Cut-out systems in which a source of high-frequency current is superimposed on the line, have two circuits supplied from this source, one of the circuits including a portion of the line and the other circuit being a standard compression circuit having electrical characteristics similar to those of a position of the protected circuit under normal conditions, out-of-balance high-frequency current during fault conditions causing the tripping of the associated circuit-breaker. As shown in the Figure in which a line 10 to be protected is provided with a circuit-breaker 11 with closing coil 13 and tripping coil 12, the high-frequency source 9 is obtained from an oscillator valve 18 and amplifying valve 19. Current from this source ...

Detection circuit of the defects in the drivers

Sophisticated device of protection of electrical communications

Device for the selective control of electric lines

ASSEMBLY FOR DETECTING AN ELECTRIC ARC

Device for the release of switches of alternative course in the event of excessive current of the nature of a short-circuit

RESIDUAL CURRENT PROTECTIVE DEVICE WITH FREQUENCY GENERATOR

La présente invention concerne un dispositif de protection contre les courants de fuite, notamment un commutateur de protection contre les courants différentiels, comprenant un transformateur de courant total (2) pourvu d'un enroulement de commande (4). Cet enroulement de commande est alimenté par une tension alternative sinusoïdale fournie par un générateur de fréquences (10). Ledit générateur de fréquences (10) comprend, dans sa réalisation la plus simple, un générateur de signaux rectangulaires (12) et un filtre passe-bas (14) connecté à ce dernier. Avec cette configuration de circuit simple, les exigences relatives à un générateur de fréquences (10) dans un dispositif de protection contre les courants de fuite sont satisfaites. Ledit générateur de fréquences (10) est adapté aux exigences spécifiques d'un dispositif de protection contre les courants de fuite.

ELECTRONIC TRIPPING DEVICE FOR A CIRCUIT BREAKER WITH A ROGOWSKI CURRENT TRANSFORMER

The invention relates to an electronic tripping device for a circuit breaker (1). Said tripping device processes a current signal of a Rogowski current converter with a current detector coil (10) and an integration amplifier (11) by means of a microprocessor device (7). The current detector coil (10) can be tested while the circuit breaker (1) is in operation by means of a high-frequency oscillating circuit (14) formed by connecting a capacitor (13) in parallel and supplying a high-frequency auxiliary power to said oscillating circuit by means of an auxiliary winding (16). The energy consumed by the oscillating circuit (14) is evaluated in accordance with the frequency of the auxiliary power in order to reliably detect and indicate defects such as wire breakage and interturn faults. The test circuit described can be accommodated in the circuit breaker and is suitable for testing the current detection coil constantly, periodically or on request.

DEVICE FOR PROTECTING ELECTRICAL NETWORKS

The device comprises at least a first part intended to detect an electrical fault occurring in a network and a second part comprising at least one switch connecting the network to a power supply source, the first part comprising at least one reflectometry detection system capable of being coupled with the network, the system detecting and analyzing the impedance changes occurring in the network, a signal being sent by the system to trigger the opening of the switch when a detected impedance change is considered by the system to be an electrical fault.

Integrated capacitive discharge electrical bonding assurance system

In one embodiment, an aircraft electronics system includes a hardware processor, a charge collection circuit to collect charge; a switching circuit controlled by the hardware processor to discharge the charge collected on the charge collection circuit through a bonding circuit formed from a chassis and a bonding surface; and a voltage measurement circuit to measure a voltage difference between measurement terminals across the chassis and the bonding surface.

Multi-frequency ground monitor current sensing

An apparatus includes a signal generation module that injects a signal in a pilot conductor. The signal includes two or more AC components. Current in the pilot conductor is injected in a grounding conductor of power cables connecting a power source to a load, and the grounding conductor is connected to a ground return. A current monitor module monitors current in the pilot conductor or ground return, an AC detection module determines an AC current corresponding to each of the two or more AC components present in the monitored current, and an AC threshold module determines if one or more of the AC currents is below an AC threshold. A trip module opens a contact in response to determining that at least one of the AC currents is below an AC threshold for longer than an AC current time threshold. The contact disconnects the power source from the power cables.

ALARM CIRCUIT FOR MONITORING THE PRIMARY WINDING OF A NEUTRALIZING TRANSFORMER AND ITS GROUNDING CONNECTION

A remote alarm and indicating circuit for the primary of a neutralizing transformer utilizing an oscillator to produce balanced opposing signals in the primary and grounding circuits. These signals also flow through the coils of a differential relay in such a manner that if the ground circuit opens or if there is an appreciable change in its impedance or resistance, on the order of 5 percent or more, the differential relay will operate denoting such an occurrence.

ANORDNUNG FUER DIE EINSPEISUNG VON LEISTUNG IN EIN FERNMELDESYSTEM

Radio frequency cable monitor

An apparatus includes a radio frequency (RF) signal source 11 connected by a cable 16 comprising two conductors 19, 20 to a pair of spaced-apart electrodes 18. An electrical testing signal is supplied from a source 24 through the two conductors 19, 20 and a bypass element 22, such as an inductor, which has low impedance to the testing signal but high impedance to the RF signal. A sensor 28 monitors the electrical testing signal, so that damage to the cable 16 may be detected. The testing signal may be low-frequency or direct current and separated from the RF signal by an inductor/capacitor filter 25. The apparatus may be a radio-frequency welding apparatus each of whose components are portable (fig 2, 40) and a portable tool (fig 2, 50) may comprise opposed electrodes that are urged together by an electrically actuated mechanism, such as a solenoid (fig 2, 60). If a cable fault is detected RF generator 11 can be automatically switched off, reducing a potential operator hazard.

Method and circuit for detecting an arc fault

A circuit 10 for detecting a fault in a power transformer 16 includes a conductive shield layer 44 sandwiched between electrical insulating layers 30 separating the conductive shield layer 44 from a first conductor 26 and a second conductor 28, the second conductor 28 opposite the conductive shield layer 44 from the first conductor 26. The shield layer 44 is energized via voltage divider 46, and the voltage of the shield 44 is sensed 48, the sensed voltage 48 then compared to a threshold voltage value corresponding to a fault. Upon satisfaction of the comparison, a fault indication is provided when the comparison indicates the presence of a fault. Further threshold values may also be stored to allow identification of which of the conductors 26 or 28 has faulted to the conductive shield layer 44.

Means for protecting electrical installations, particularly heavy current installations

... 367,539. Protective cut-out arrangements. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Jan. 30, 1931, No. 3109. Convention date, Feb. 10, 1930. Addition to 319,242, [Class 38 (v), Electric switches &c.]. [Class 38 (v).] Relates to the protection of heavy current installations by superimposing on them a frequency dependent on that of their natural frequency so that when the natural frequency changes on fault a change in the superimposed frequency takes place, and, acting on a relay isolates the faulty circuit or apparatus, as described in the parent Specification. According to the present invention, instead of employing filter circuits to separate the protected part from the remainder of the plant a high-frequency oscillation generator H impresses by inductive coupling equal tensions (with a phase displacement of 180‹ in relation to each other) on the one hand on the part of the plant to be protected W, and, on the other hand, upon a winding W2 in the connection between W1 and ...

Improvements in or relating to protection devices for electric networks

... 866,031. Protective cut-out arrangements. CHARBONNAGES DE FRANCE. July 7, 1958 [July 9, 1957; March 25, 1958; June 2, 1958], No. 21761/58. Class 38 (5). In a protective arrangement the occurrence of faults which may be of high resistance is detected by one or more relays which respond to an increase in the highfrequency current injected into the protected system by an electronic high-frequency generator through one or more series inductance - capacitance circuits presenting a low impedance to the high-frequency current, the power source and the apparatus supplied by the source being provided with parallel capacitors so as to form parallel inductance-capacitance circuits presenting a high impedance to the high-frequency current under normal conditions. The high-frequency generator may comprise a transistor oscillator 6, Fig. 1, and a coupling transformer 10 associated with a capacitor 9, a variable resistor 7 and a potentiometer 8 arranged to provide two high-frequency signals of suitable ...

Smoke alarm system

A smoke alarm system including a smoke detecting unit, a relay to control electrical power supply to all or part of a switchboard located remote to the smoke detecting unit, wherein when the smoke detecting unit detects smoke, the smoke detecting unit communicates with the relay to cut the electrical power supply through the relay.

GFI CIRCUIT HAVING TUNED CIRCUIT FAULT DETECTOR

GROUND MONITORING SYSTEM

Title: Improved Ground Monitoring System Inventor: An improved ground monitoring circuit for detecting the integrity and proper connection of the ground conductors in an electrical cable of an electrical power distribution system of a type that is commonly used at a surface mining site. A complete conductive loop is established between the ground conductor, or conductors, and the ground check, or pilot wire of the cable. A sending signal at a frequency higher than the power frequency is coupled onto the ground monitoring loop. The monitoring loop includes a terminating resistor of predetermined value. The sensing signal on the ground conductor in the loop is isolated from local ground by means of an impedance element that presents a high impedance at the sensing signal but not at the power frequency. The impedance element is connected between the ground conductor of the power cable and the local ground. When successive lengths of cable are series connected, the impedance elements are connected ...

Improvements with the protection of the networks

Safety device of electrical installations, in particular of installations with high tension current

Protection of the electrical communications comprising of the cables

PROTECTION DEVICE OF ELECTRICAL NETWORKS

Le dispositif comporte au moins une première partie (1) destinée à détecter un défaut électrique survenant dans un réseau et une deuxième partie (2) comportant au moins un interrupteur (5) reliant ledit réseau à une source d'alimentation électrique (4), la première partie (1) comportant au moins un système de détection par réflectométrie apte à être couplé au réseau, ledit système détectant et analysant les modifications d'impédances survenant dans le réseau, un signal étant envoyé par ledit système pour déclencher l'ouverture de l'interrupteur (5) lorsqu'une modification d'impédance détectée est considérée par ledit système comme un défaut électrique. The device comprises at least a first part (1) intended to detect an electrical fault occurring in a network and a second part (2) comprising at least one switch (5) connecting said network to an electrical power source (4), the first part (1) comprising at least one detection system by reflectometry able to be coupled to the network, said system detecting and analyzing the modifications of impedances occurring in the network, a signal being sent by said system to trigger the opening of the switch (5) when a detected change in impedance is considered by said system as an electrical fault.

Procédé de protection des réseaux électriques et installations comportant application du dit procédé.

Electronic module, electronic arrangement and method for producing an electronic module

An electronic module (100) has a first and a second circuit (200, 300) with respective first and second output connections (230, 330), respective first and second reference potential connections (220, 320), and respective first and second sensing connections (240, 340), each circuit (200, 300) comprising a respective sensing block (250, 350), which at its input side is connected to the respective sensing connection (240, 340) and to the respective reference potential connection (220, 320). The first sensing connection (240) is either connected to the first output connection (230) or to the second output connection (330). The second sensing connection (340) is connected to the second output connection (330). The sensing blocks (250, 350) are configured to detect a failure of the electronic module (100) with respect to its respective reference potential connection (220, 320) and to indicate a detected failure by providing a failure signal at its respective output connection (230, 330).

SYSTEM FOR MONITORING THE STATE OF A CABLE THROUGH DISTRIBUTED REFLECTOMETRY

Voltage regulator for dc motors

A voltage regulator for a pair of electric motors has an input for a signal indicative of the desired speed for the motors and a pulse width modulation control circuit device. A control module provides a conditioning signal to the control circuit to output to the motors a square wave voltage having a duty-cycle which varies according to a predetermined function of the signal applied to the input of the regulator. The control circuit device has first and second electronic solid state switches associated with the motor and controlled by the control module.

ELECTRICAL APPARATUS

An electrical apparatus that can prevent erroneous attachment of a fuse is provided. A PCU includes a housing having a surface. A fuse storage space is formed in the housing. The fuse storage space communicates with a region outside of the housing through an opening formed at the surface. The PCU further includes a cover member covering the opening, and an overcurrent-protection fuse located in the fuse storage space. The cover member includes a cover body closing the opening, and a projection section projecting inward of the fuse storage space relative to the cover body. The projection section interferes with the fuse when the fuse is attached erroneously in the fuse storage space. 1. An electrical apparatus comprising:a housing having a surface, a space being formed in said housing, said space communicating with a region outside of said housing through an opening formed at said surface; anda cover member made of metal, covering said opening; andan overcurrent-protection fuse located in said space,said cover member including a cover body closing said opening, and a projection section protruding inward of said space relative to said cover body,when said fuse is attached properly in said space, an insulation distance between said cover member and said fuse is ensured, and when said fuse is erroneously attached in said space, said projection section interfering with said fuse to disallow attachment of said cover member to said housing.2. The electrical apparatus according to claim 1 , wherein said cover body and said projection section are a unitary molding made of metal.3. The electrical apparatus according to claim 2 , wherein said cover body is formed plate-like claim 2 , andsaid projection section is formed denting in a direction from a side of an outer face towards a side of an inner face of said cover body.4. The electrical apparatus according to claim 3 , whereinsaid housing is arranged such that said surface has an inclination of a first angle relative to a ...

Device of protection against transient electrical overvoltages

A device of protection against transient electrical overvoltages, including two voltage-limiting passive components, disconnectors sensitive to the state of these components and adapted to individually disconnect each end of life component therefrom, the components are joined in parallel between a first and a second terminal of the device, where the reference voltage of the first component is inferior to the reference voltage of the second component.

COMBINED DEVICE FOR ELECTRICAL PROTECTION AGAINST TRANSIENT OVERVOLTAGES AND MONITORING OF AN ELECTRICAL INSTALLATION

The present invention refers to a combined device for electrical protection against transient overvoltages and monitoring of an electrical installation, of those used in installations with alternating single-phase or multi-phase current, or direct current, of those formed by cartridges plugged in to a fixed base or formed by a monoblock, both types of devices comprising one or more components for overvoltage protection in each plug-in cartridge or in the monoblock, characterised in that it comprises monitoring means configured so that they continuously measure and process one or several parameters related to the state of the electrical installation and the protective device itself, and connected to said monitoring means a series of indication means configured to indicate one or a combination of output parameters are comprised. 1. Combined device for electrical protection against transient overvoltages and monitoring of an electrical installation , as used in single-phase or multi-phase alternating voltage installations , or with direct voltage , which are formed by cartridges plugged to a fixed base or that are formed by a monoblock , both types of devices comprising a minimum of one protection group formed by one or more protective components against transient overvoltages in each plug-in cartridge or in the monoblock , the protective component being such as varistor(s) , gas arresters , gas discharge tube(s) , spark gap(s) , suppressor diode(s) , triac(s) , thyristor(s) , and/or MOSFET(s) or other technically equivalent components , characterized in that it comprises means of monitoring configured in order to permanently measure and process one or several parameters in relation to the condition of the electrical installation and the protective device itself , and also connected to said means of monitoring are means of indication set up in such a way as to indicate one or a combination of the following output parameters:{'sub': PE', 'PEMIN', 'PEmax, 'If the earth ...

ELECTRONIC MODULE, ELECTRONIC ARRANGEMENT AND METHOD FOR PRODUCING AN ELECTRONIC MODULE

An electronic module () has a first and a second circuit () with respective first and second output connections (), respective first and second reference potential connections (), and respective first and second sensing connections (), each circuit () comprising a respective sensing block (), which at its input side is connected to the respective sensing connection () and to the respective reference potential connection (). The first sensing connection () is either connected to the first output connection () or to the second output connection (). The second sensing connection () is connected to the second output connection (). The sensing blocks () are configured to detect a failure of the electronic module () with respect to its respective reference potential connection () and to indicate a detected failure by providing a failure signal at its respective output connection (). 2100. Electronic module () according to claim 1 ,{'b': 200', '300, 'wherein the first circuit () and the second circuit () are arranged isolated from each other.'}3100. Electronic module () according to or claim 1 ,{'b': 250', '240', '220', '350', '340', '320, 'wherein the first sensing block () is configured to compare a voltage at the first sensing connection () with a voltage at the first reference potential connection (), and wherein the second sensing block () is configured to compare a voltage at the second sensing connection () with a voltage at the second reference potential connection ().'}4100240340330220320. Electronic module () according to one of to claim 1 , wherein the first sensing connection () and the second sensing connection () are commonly connected to the second output connection () claim 1 , and wherein the first reference potential connection () is connected to the second reference potential connection ().5100. Electronic module () according to claim 4 , wherein{'b': 100', '400', '411', '431', '432', '422, 'the electronic module () is arranged in a housing () having an ...

Electric fuse current sensing systems and monitoring methods

Electrical current sensing and monitoring methods include connecting a compensation circuit across a conductor having a non-linear resistance such as a fuse element. The compensation circuit injects a current or voltage to the conductor that allows the resistance of the conductor to be determined. The current flowing in the conductor can be calculated based on a sensed voltage across the conductor once the resistance of the conductor has been determined.

CIRCUIT INTERRUPTERS AND ELECTRICAL ENCLOSURES WITH REJECTION FEATURES

A set of circuit interrupters and electrical enclosures that are configured to permit an electrical enclosure having a current rating to have connected therewith a circuit interrupter having a current carrying rating no greater than the current rating. However, a current interrupter having a current carrying rating less than the current rating of the electrical enclosure potentially may be connected therewith. Such electrical interruption equipment employs threaded studs on bus bars that are of varying sizes and/or are separated by varying distances in order to resist an electrical enclosure having a current rating from being electrically connected with a circuit interrupter having a current carrying rating greater than the current rating. Alternatively or additionally, the circuit interrupter and/or the electrical enclosure may have interference elements that physically interfere with the mounting and/or the electrical connection of a circuit interrupter having a current carrying rating with an electrical enclosure having a current rating less than the current carrying rating.

COMMON VOLTAGE DISTORTION DETECTING CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME

A common voltage distortion detecting circuit includes a current sensor, a voltage difference voltage detecting circuit and a comparator. The current sensor is disposed between a circuit configured to apply a common voltage to a liquid crystal display panel and an input power terminal providing a power voltage. The voltage difference detecting circuit is configured to detect a difference voltage between two terminals of the current sensor. The comparator is configured to compare the difference voltage and a reference voltage to output an over current signal to convert an inversion method of the liquid crystal display panel when the difference voltage is greater than the reference voltage. 1. A common voltage distortion detecting circuit , comprising:a current sensor disposed between a circuit configured to apply a common voltage to a liquid crystal display panel and an input power terminal providing a power voltage;a voltage difference detecting circuit configured to detect a difference voltage between two terminals of the current sensor; anda comparator configured to compare the difference voltage and a reference voltage to output an over current signal to convert an inversion method of the liquid crystal display panel when the difference voltage is greater than the reference voltage.2. The common voltage distortion detecting circuit of claim 1 , wherein the voltage difference detecting circuit comprises a current shunt mirror configured to amplify a voltage or a current.3. The common voltage distortion detecting circuit of claim 2 , wherein the current shunt mirror comprises:a first resistor having a first terminal connected to an input terminal of the current sensor;a second resistor having a first terminal connected to an output terminal of the current sensor;an operational amplifier having a positive input terminal connected to a second terminal of the first resistor and a negative input terminal connected to a second terminal of the second resistor; anda ...

FAULT DETECTION AND ISOLATION USING A COMMON REFERENCE CLOCK

A fault detection and isolation system for distribution electric power lines utilizing a remote reference voltage signal, multiple three-phase current monitors producing asynchronous event data, and a common reference clock. A voltage measurement obtained for a power line at a substation may be synchronized with multiple current phase measurements taken at a power monitoring location along that particular power line. The same voltage measurement may be similarly synchronized with current measurements taken at multiple current monitoring locations along the power line. As a result, the same voltage measurement may be synchronized with current measurements taken multiple tap points along the power allowing a fault on a tapped line segment to be identified, located and isolated. An alternative embodiment utilizes differential current analysis utilizing current measurements from adjacent current monitoring locations correlated to a common reference clock to locate faults and therefore does not require a voltage measurement. 1. A fault detection and response system for a three phase electric power line having three phase conductors , comprising:a current monitoring station comprising a set of three current phase sensors, each electrically coupled to and asynchronously monitoring phase current flowing in an associated phase conductor, each current phase sensor operative for receiving or generating a reference clock signal and having a data buffer for storing a recent history phase current waveform data file for its associated phase current correlated with the reference clock signal;a reference voltage sensor located remotely from the current monitoring station operative for receiving or generating the reference clock signal and having a data buffer for storing a recent history voltage waveform data file for the electric power line correlated with the reference clock signal;an event detector operative for event detection of a potential fault on the electric power line;each ...

OVER-CURRENT PROTECTION METHOD AND CIRCUIT FOR A DC INVERTER

An over-current protection method and circuit for a DC Inverter is provided in the present invention. Said over-current protection circuit comprises: a sampling unit for sampling output currents from a power module to form a sampling signal; a signal-processing unit for amplifying with various magnification factors and low-pass filtering the sampling signal to generate a first over-current signal and a second over-current signal; a signal-generating unit for generating a first interrupt trigger signal based on the first over-current signal; a comparison unit for comparing the second over-current signal with a reference voltage corresponding to an over-current threshold of a motor, with a comparison result being a second interrupt trigger signal; and a control unit for controlling the power module based on the first interrupt trigger signal, and the motor based on the second interrupt trigger signal. The over-current protection method and circuit provided in the present invention are able to satisfy over-current protection of the power module and the motor of the inverter simultaneously. 1. An over-current protection method for a DC Inverter , wherein said over-current protection method comprises:sampling output currents from a power module to form a sampled signal;amplifying with a plurality of magnification factors and low-pass filtering said sampling signal to generate a first over-current signal and a second over-current signal, wherein a first magnification factor, on the basis of which said first over-current signal is generated, is pertinent to an over-current threshold of said power module, and a second magnification factor, on the basis of which said second over-current signal is generated, is pertinent to an over-current threshold of a motor;generating a first interrupt trigger signal based on said first over-current signal;comparing said second over-current signal with a reference voltage corresponding to said over-current threshold of the motor, with a ...

Temperature monitoring

The present disclosure relates to an electronic circuit for detecting the current winding temperature of phase windings and/or other characteristics of an electronically commutated electric motor, which is connected, or can be connected, to a frequency converter, comprising one or more capacitive two-terminal networks with a temperature-dependent impedance, each network being arranged parallel to two winding terminals (u, v, w) of the phase windings, as well as a detector for detecting the current responses in the motor feeds on the basis of steep-flanked voltage changes at the output of the frequency converter.

OVERCURRENT PROTECTION FOR AN AUTOMOTIVE INSTRUMENT CLUSTER

A system and method for protecting an instrument panel circuit from overcurrents includes a differential amplifier that magnifies a voltage drop across at least one power input component. The magnified voltage drop is provided to a hysteresis comparator that compares the voltage drop against a pair of hysteresis thresholds. When the voltage drop exceeds the thresholds, an overcurrent is detected and a default state of a power switching element is changed from closed to open. 1. An instrument panel circuit comprising:a power source;at least one control input component connecting said power source to a load;a switch element interruptibly connected between said at least one control input component and said load such that said control input is connected to said load when said switch element is closed and disconnected from said load when said switch element is open;an overcurrent protection circuit having a first voltage input connected to a high side of said at least one control input component and a second voltage input connected to a low side of said at least one control input;a pull up module connecting a gate and a source of said switch element; andan output of the overcurrent protection circuit is connected to a second switching element, and wherein the second switching element is configured such that a pull up module is switched out of the instrument panel circuit when the second switching element is closed and the pull up module is not switched out of the instrument panel circuit when the second switching element is open.2. The instrument panel circuit of claim 1 , wherein the overcurrent protection circuit includes a differential amplifier and a hysteresis comparator.3. The instrument panel circuit of claim 2 , wherein the differential amplifier includes a positive input and a negative input claim 2 , and wherein the differential amplifier is configure to amplify a voltage drop across said at least one control input component.4. The instrument panel circuit of ...

Arrangement For Injection-Based Ground Fault Protection Handling

An arrangement for injection-based ground fault protection handling including a number of stator windings of an electric machine that are connected to a neutral point, a first transformer including at least one primary winding connected to at least one measurement point of the stator windings and at least one secondary winding for measuring an electrical quantity of the machine at the measurement point. There is also a second transformer having a primary winding connected between the neutral point and a ground potential and a secondary winding for connection to a signal generation and detection unit in order to inject a signal into the neutral point and receive a response. The impedance of the second transformer is in the range of the impedance of the machine. 1. An arrangement for injection-based ground fault protection handling , the arrangement comprising:a number of stator windings of an electric machine, said stator windings being connected to a neutral point,a first transformer including at least one primary winding connected to at least one point of the stator windings and at least one secondary winding for measuring an electrical quantity of the machine at a measurement point of the first transformer, anda second transformer having a primary winding connected between the neutral point and a ground potential and a secondary winding for connection to a signal generation and detection unit in order to inject a signal into the neutral point and receive a response,wherein the impedance of the second transformer is in the range of the impedance of the machine.2. The arrangement according to claim 1 , wherein the impedance of the second transformer is in a range of 0.25-4 times the impedance of the electric machine.3. The arrangement according to claim 1 , further comprising the signal generation and detecting unit connected to the secondary winding of the second transformer and configured to inject said signal claim 1 , detect the response and determine the ...

ELECTRICAL MEASURING DEVICE FOR MEASURING THE RESISTANCE OF AN EARTH CONNECTION OF AN ELECTRICAL FACILITY

An electrical measuring device for measuring the resistance of an earth connection of an electrical facility. The device comprises at least: a first link to an earth connection of the masses of an electrical facility; a second link to a neutral conductor; an alternating current generator; and a control unit suitable for: instructing the generator to inject alternating current into the earth connection of the masses; measuring, between said first and second links, a voltage generated by said injected current; determining a resistance of the earth connection of the masses according to the injected current and the measured voltage; and emitting a first warning signal when said compared resistance exceeds said pre-determined threshold. 1. An electrical measuring device comprising at least:a first electrical connection to an earth connection for exposed conductive parts of an electrical system connected to a main power network;a second electrical connection to a neutral conductor of said network;an alternating current generator regulated and controlled so as to inject an alternating current into said first electrical connection; instructing said generator to inject regulated alternating current into said earth connection for exposed conductive parts via said first connection;', 'measuring, between said first and second connections, a voltage generated by said injected current;', 'determining a resistance of the earth connection for exposed conductive parts, based on at least one injected current value and on a voltage value measured for said injected current value;', 'comparing said determined resistance to a predetermined threshold; and', 'issuing a warning signal when said compared resistance exceeds the predetermined threshold., 'a control unit adapted for2. The electrical measuring device according to claim 1 , further comprising a switch to cut off power to an electrical appliance plugged into the electrical system claim 1 , the control unit being adapted to open ...

FAULT LOCATION USING TRAVELING WAVES

The present disclosure relates to calculating a fault location in an electric power transmission system based on traveling waves. In one embodiment, a system consistent with the present disclosure may be configured to detect a fault in an electric power transmission system. The system may include a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line and a fault location estimation subsystem. The fault location estimation subsystem may receive from the traveling wave detection subsystem a first plurality of traveling waves on the transmission line generated during a reference event. The fault location estimation subsystem may receive from the traveling wave detection subsystem a second plurality of traveling waves generated during an unplanned event. An unmatched traveling wave in the second plurality of waves may be detected and a location of the unplanned event based on the unmatched traveling wave. 1. A system configured to detect an unplanned event in an electric power transmission system , the system comprising:a traveling wave detection subsystem configured to detect and measure traveling waves on a transmission line of the electric power transmission system; receive from the traveling wave detection subsystem a first plurality of detected traveling waves on the transmission line generated during a reference event;', 'generate a reference train from the first plurality of detected traveling waves during the reference event;', 'receive from the traveling wave detection subsystem a second plurality of detected traveling waves generated during an unplanned event;', 'identify a plurality of matched traveling waves in the reference train from the first plurality of traveling waves and the second plurality of traveling waves;', 'align the reference train and the second plurality of traveling waves based on the plurality of matched traveling waves;', 'identify an unmatched traveling wave and a time of the ...

SYSTEM AND METHOD FOR LOCATING EARTH FAULT IN POWER GRIDS

In a multi-phase power grid fed by a power source, earth fault () is located by means of a power supply source synchronized with the power grid, which is connected between a zero point of the grid and earth. In a fault current compensation mode (), a control unit controls the alternating voltage source to compensate for any ground fault current in the power grid to a value below a threshold level. In a fault detecting mode (), the control unit gradually adjusts the output voltage of the alternating voltage source with respect to amplitude and/or phase angle (). A change of zero-sequence current and zero-sequence admittance between the alternating voltage source and a fault location is measured () by means of at least one detector. The at least one detector is communicatively connected to the control unit and reports recorded measured values representing zero-sequence current and/or zero-sequence admittance to the control unit. In the fault detecting mode, the control unit localizes a ground fault () based on at least one of said measurement values representing changes of the zero-sequence current and/or zero-sequence admittance, upon which an affected branch is disconnected () or the system switches to the fault compensation mode (). 1. A system for locating earth fault in a multi-phase power grid powered by a power source , the system comprising:an alternating voltage source synchronized with the power grid and which is connected between a zero point of the power grid and earth,a controller configured to control the alternating voltage source in a fault current compensation mode to compensate for any ground fault current in the power network to a value below a threshold level, andat least one detector arranged in the power grid and communicatively connected to the contoller, which at least one detector is configured to register measurement values representing zero-sequence current and zero-sequence admittance,wherein the controller, when in a fault detection mode, ...

Switching converter, control circuit thereof, ac/dc converter, power adapter and electronic device

A control circuit used in a switching converter having a coil, a switching transistor, and a detection resistor, includes: a current detection terminal configured to receive a detection voltage obtained by superimposing a voltage detection signal on a current detection signal; a sample hold circuit configured to sample-hold the detection voltage in an OFF period of the switching transistor to generate a sample hold voltage; a variable amplifier configured to amplify a difference between the sample hold voltage and the detection voltage; a duty controller configured to generate a pulse modulation signal; a driver configured to control the switching transistor based on the pulse modulation signal; and an overcurrent protection circuit configured to compare the detection voltage with a predetermined threshold voltage and change the pulse modulation signal to an OFF level of a switching transistor when the detection voltage is identical to the predetermined threshold voltage.

ELECTRICAL LINK COMPRISING AN ELECTRICAL PROTECTION DEVICE

An electrical link includes an electrical protection device. The electrical link, for linking an AC high-voltage generator to a user apparatus, includes an electrical conductor surrounded by a first inner insulating envelope. An electrical protection device includes a conductive sheath around the inner insulating envelope. A fixed DC current generator is connected to a current injection point of the conductive sheath. A circuit breaker that can be activated is on the electrical conductor and configured to break the electrical link when it is activated. A detection module is connected to a current tap-off point of the conductive sheath and to the circuit breaker, the detection module being configured to detect a break in the conductive sheath, a current leak out of the electrical conductor or a current leak out of the sheath and to activate the circuit breaker. 1. An electrical link for linking an AC high-voltage generator to a user apparatus , the electrical link comprising:an electrical conductor surrounded by a first inner insulating envelope; a conductive sheath arranged around the inner insulating envelope;', 'a fixed DC current generator connected to a current injection point of the conductive sheath;', 'a circuit breaker that can be activated arranged on the electrical conductor and configured to break the electrical link when it is activated; and', a shunt connected by a first terminal between the tap-off point of the conductive sheath and a current measurement point and by a second terminal to a ground, a test voltage, reflecting a current passing through the shunt, being measured across the terminals of the shunt;', 'an active current measurement module configured to produce a first voltage that is representative of an active current passing through the shunt, the first voltage being obtained on a basis of the measurement of the AC component of the test voltage;', 'a DC current measurement module configured to produce a second voltage that is representative ...

OVERTEMPERATURE PROTECTION

A protective circuit protects against overheating of the stator windings of an EC motor. The stator windings are connected to a semiconductor output stage which is designed for time-offset control of the stator windings using a driver circuit of a commutation controller. The protective circuit has two redundant sensor circuits, wherein two resistance-dependent sensor elements connected in series are provided in the first sensor circuit and one resistance-dependent sensor element is provided in the second sensor circuit. The first and the second sensor circuits are connected, respectively, to two evaluating circuits separated from each other and cause an interruption of the driver circuit using switch-off means when a system-specific resistance value of the first sensor element or the one sensor element associated with the second sensor circuit is reached. 1. A protective circuit for protecting against overheating of stator windings of an EC motor , the stator windings are connected to a semiconductor output stage which is designed for the time-offset control of the stator windings of the EC motor by means of a driver circuit of an electronic commutation controller for the purpose of producing a rotating magnetic field , the protective circuit comprises: a first and a second resistance-dependent sensor element connected in series are provided in the first sensor circuit and one resistance-dependent sensor element is provided in the second sensor circuit', 'the first and the second sensor circuits are connected, respectively, to first and second evaluating circuits which are separated from each other and which bring about an interruption of the driver circuit by means for switch-off when a system-specific limit resistance value of the first resistant-dependent sensor element or the one resistance-dependent sensor element associated with the second sensor circuit is reached, in order to thereby switch the stator windings of the motor to a currentless state., 'a first ...

INTEGRATED CAPACITIVE DISCHARGE ELECTRICAL BONDING ASSURANCE SYSTEM

In one embodiment, an aircraft electronics system includes a hardware processor, a charge collection circuit to collect charge; a switching circuit controlled by the hardware processor to discharge the charge collected on the charge collection circuit through a bonding circuit formed from a chassis and a bonding surface; and a voltage measurement circuit to measure a voltage difference between measurement terminals across the chassis and the bonding surface. 120-. (canceled)21. An aircraft electronics system comprising:a charge collection circuit for collecting charge;a switching circuit for discharging the collected charge through a bonding circuit formed between a chassis and a bonding surface; anda voltage measurement circuit for measuring a voltage difference between measurement terminals across the chassis and the bonding surface;wherein the switching circuit comprises a first transistor disposed between the charge collection circuit and the voltage measurement circuit and a second transistor disposed between the field effect transistor and ground.22. The aircraft electronics system of claim 21 , wherein the first transistor comprises a field effect transistor (“FET”).23. The aircraft electronics system of claim 22 , wherein the FET comprises a p channel FET.24. The aircraft electronics system of claim 21 , wherein the second transistor comprises a bipolar junction transistor (“BJT”).25. The aircraft electronics system of claim 21 , wherein the charge collection circuit comprises one or more capacitors coupled to a voltage source.26. The aircraft electronics system of further comprising a hardware processor is configured to provide a signal to the switching circuit to conductively couple the charge collection circuit to the measurement terminals.27. The aircraft electronics system of claim 21 , wherein the voltage measurement circuit comprises a differential amplifier to output a voltage differential across the measurement terminals.28. The aircraft electronics ...

MEMORY SHORT PROTECTION SYSTEM

Memory short detection systems and methods include a power supply system with first power rail. A memory system includes a memory device connector that is configured to couple to a memory device and includes a first pin that is coupled to the first power rail and a second pin located adjacent the first pin. A short detection circuit is coupled to the first pin. The short detection circuit is configured to provide a first voltage from the first power rail, compare the first voltage to a first short detection voltage, and determine whether a short exists across the first pin and the second pin based on the comparing of the first voltage to the first short detection voltage. If a short is determined to exist across the first pin and the second pin, power is prevented from being provided to the memory device connector. 1. A short protection system , comprising:a device connector that includes a first pin and a second pin that is located adjacent the first pin, wherein the first pin is coupled to a first power rail; provide a first voltage from the first power rail;', 'compare the first voltage to a first short detection voltage;', 'determine whether a short exists across the first pin and the second pin based on the comparing of the first voltage to the first short detection voltage; and', 'prevent power from being provided to the device connector in response to determining a short exists across the first pin and the second pin., 'a short detection circuit coupled to the first pin, wherein the short detection circuit is configured to2. The short protection system of claim 1 , wherein the second pin is either coupled to a second power rail or to ground.3. The short protection system of claim 1 , wherein the short detection circuit includes a first resistor network that is coupled to the first pin and that is configured to provide the first voltage.4. The short protection system of claim 1 , wherein the short detection circuit includes an isolation device that is coupled ...

THERMAL PROTECTOR

A thermal protector including a body integrally connected to a magnet wire terminating feature. 1. A thermal protector comprising:a body integrally connected to a magnet wire terminating feature.2. The thermal protector of claim 1 , wherein the body and the magnet wire terminating feature are of unitary construction.3. The thermal protector of claim 1 , wherein the body and the magnet wire terminating feature have a crimp connection.4. A thermally protected bobbin comprising:a magnet wire wound onto a spindle; anda thermal protector comprising a body integrally connected to a magnet wire terminating feature;wherein the magnet wire terminating feature forms a connection with the magnet wire.5. The thermal protector of claim 4 , wherein the body and the magnet wire terminating feature have a crimp connection.6. A thermally protected bobbin comprising:a magnet wire having opposed ends wound onto a spindle, the spindle having a splice opening for receiving the magnet wire between the opposed ends; anda thermal protector comprising a body integrally connected to a magnet wire terminating feature;wherein each magnet wire terminating feature is received by a corresponding splice opening, each magnet wire terminating feature forming a connection with the magnet wire.7. The thermally protected bobbin of claim 6 , wherein the body and the magnet wire terminating feature are of unitary construction.8. The thermally protected bobbin of claim 6 , wherein the splice opening having a post for receiving the magnet wire subsequent to the magnet wire extending through the splice opening claim 6 , the post being removed during or subsequent to the magnet wire terminating feature forming a connection with the magnet wire.9. The thermally protected bobbin of claim 8 , wherein a magnet wire segment extending between each magnet wire terminating feature is removed from the spindle. The present invention is directed to bobbins for carrying magnet wire, and in particular, the invention is ...

Abnormality detection device

In a bridge circuit, a series circuit in which a first resistor and a second resistor are connected in series and the second resistor and a fourth resistor are connected in series is formed. In the bridge circuit, the series circuit is connected to a load portion in parallel, one end of a fifth resistor is connected between the second resistor and the fourth resistor, and the other end of the fifth resistor is connected between the first resistor and the load portion. In the bridge circuit, a voltage supply unit is connected between the first resistor and the second resistor. A controller detects an abnormality of the load portion based on a detection voltage of the bridge circuit detected by applying a voltage from the voltage supply unit with a switch turned off. With this configuration, an abnormality detection device can detect abnormality while suppressing an increase in size.

POWER FAULT DETECTION IN TRANSCEIVERS

A host voltage monitor is provided for a transceiver. The host voltage monitor may include a comparator, which compares two voltages, one representative of the present host voltage, and the other representative of a threshold voltage level for the host voltage, that may indicate an imminent loss of power. Once the threshold is crossed, an alarm and/or a fault warning data packet may be automatically generated before the power fault causes the transceiver to shut down. 1. A transceiver for being hosted by a network communications device , the transceiver comprising:a transmitter for transmitting first data packets,a receiver for receiving second data packets,a packet processor coupled to the transmitter and the receiver for processing the first and second data packets;a connector coupled to the packet processor for transmitting and receiving the first and second data packets in electrical domain to and from a host device, and for providing a host voltage from the host device; anda host voltage monitor for providing a fault trigger signal for the packet processor to generate a fault data packet when the host voltage becomes equal to or drops below a predetermined threshold voltage,wherein the host voltage monitor comprises a comparator for comparing a reference voltage, corresponding to the threshold voltage, to a variable voltage based on the host voltage, and for providing the fault trigger signal to the packet processor when the variable voltage becomes equal to or drops below the reference voltage.2. The transceiver of claim 1 , wherein the packet processor comprises a fault packet generator responsive to the fault trigger signal claim 1 , for generating the fault packet upon receiving the fault trigger signal.3. The transceiver of claim 1 , wherein the host voltage monitor further comprises a DC-DC voltage converter for generating the reference voltage from the host voltage.4. The transceiver of claim 3 , wherein the host voltage monitor further comprises a ...

SYSTEM AND METHOD FOR DEVICE MONITORING

A computing device includes a module that connects to a main board and a short detector. The short detector applies a voltage to a first electrical contact of the module; while the voltage is applied: makes a comparison of a second voltage on a second electrical contact of the module to the voltage; makes a determination, based on the comparison, that the first electrical contact is connected to the second electrical contact via a short circuit; and in response to the determination, initiates remediation of the short circuit. 1. A computing device , comprising:a module adapted to connect to a main board; and apply a voltage to a first electrical contact of the module;', make a comparison of a second voltage on a second electrical contact of the module to the voltage;', 'make a determination, based on the comparison, that the first electrical contact is connected to the second electrical contact via a short circuit; and', 'in response to the determination, initiate remediation of the short circuit., 'while the voltage is applied], 'a short detector adapted to2. The computing device of claim 1 , wherein the short circuit is remediated by aborting a startup of the module.3. The computing device of claim 1 , wherein the short detector comprises:a voltage source adapted to selectively apply the voltage during a short detection test.4. The computing device of claim 1 , wherein the short detector further comprises: obtain the voltage as a first input,', 'obtain the second voltage as a second input; and', 'perform the comparison using the first input and the second input., 'a comparator adapted to5. The computing device of claim 4 , wherein the comparator is further adapted to: 'continue to provide a result of the comparison after a change in one of the voltage and the second voltage.', 'after performing the comparison6. The computing device of claim 1 , wherein the second electrical contact is adapted to receive power.7. The computing device of claim 6 , wherein the first ...

Overcurrent detection circuit and method, load switch, and portable device

The present invention provides an overcurrent detection circuit, an overcurrent detection method, a load circuit, and a portable device. The overcurrent detection circuit comprises: a first overcurrent detection sub-circuit and a second overcurrent detection sub-circuit; wherein: the first overcurrent detection sub-circuit is configured to perform overcurrent detection for a switch circuit when a voltage of an output terminal of the switch circuit is greater than or equal to a preset threshold; and the second overcurrent detection sub-circuit is configured to perform overcurrent detection for the switch circuit when the voltage of the output terminal of the switch circuit is less than the preset threshold.

PACKAGE MODULE OF BATTERY PROTECTION CIRCUIT

The present invention pertains to a package module of a battery protection circuit, and the package module of the battery protection circuit according to the present invention comprises: a first internal connection terminal area and a second internal connection terminal area, which are respectively disposed at both edge parts thereof, and in which first and second internal connection terminals connected to a battery can provided with a bare cell are respectively disposed; an external connection terminal area, which is adjacent to the first internal connection terminal area, and in which a plurality of external connection terminals are disposed; and a protection circuit area comprising a device area in which a plurality of passive devices forming the battery protection circuit are disposed and a chip area, which is adjacent to the device area, and in which a protection IC and a dual FET chip forming the battery protection circuit are disposed, are disposed between the external connection terminal area and the second internal connection terminal area, and has a packaged structure to expose the plurality of external connection terminals on the upper surface thereof and expose the first internal connection terminal and the second internal connection terminal on the lower surface thereof. According to the present invention, a manufacturing process is minimized when compared with existing methods requiring a separate module manufacturing process, and a battery pack is easily formed and is able to be miniaturized and integrated. 1. A package module of a battery protection circuit , the package module comprising:first and second internal connection terminal areas individually disposed at two side edges of the package module and for respectively disposing first and second internal connection terminals to be connected to a battery can including a bare cell;an external connection terminal area adjacent to the first internal connection terminal area and for disposing a ...

LIGHT-EMITTING ELEMENT DRIVE DEVICE

Provided is a light-emitting element drive device including a transistor control unit arranged to drive and control a transistor connected to a light-emitting element, an output ground fault detection unit arranged to output an output ground fault detection signal corresponding to the voltage level at a connection node between the light-emitting element and the transistor, a stop control unit arranged to stop driving the transistor when the output ground fault detection signal indicates an output ground fault, and a mask signal generation unit arranged to generate a mask signal that masks the output ground fault detection signal on device startup. 1. A light-emitting element drive device comprising:a transistor control unit arranged to drive and control a transistor connected to a light-emitting element;an output ground fault detection unit arranged to output an output ground fault detection signal corresponding to a voltage level at a connection node between the light-emitting element and the transistor;a stop control unit arranged to stop driving of the transistor when the output ground fault detection signal indicates an output ground fault; anda mask signal generation unit arranged to generate a mask signal that masks the output ground fault detection signal on device startup.2. The light-emitting element drive device according to claim 1 , further comprising an abnormal state output unit arranged to output an abnormality flag signal indicating an abnormal state when the output ground fault detection signal indicates an output ground fault claim 1 , whereinthe abnormal state output unit outputs the abnormality flag signal indicating a normal state during a period in which the output ground fault detection signal is masked by the mask signal.3. The light-emitting element drive device according to claim 2 , further comprising a reference voltage generation unit arranged to generate a reference voltage from a power supply voltage claim 2 , whereinoperation of the ...

PRECISION SURGE CLAMP WITH CONSTANT CLAMPING VOLTAGE AND NEAR-ZERO DYNAMIC RESISTANCE UNDER VARIOUS THERMAL, POWER AND CURRENT LEVELS

A system includes a voltage surge protection circuit that receives a source voltage from a source. The voltage surge protection circuit includes a reference circuit to generate a reference voltage based on the source voltage when the source voltage exceeds a clamping voltage and a feedback control circuit to receive the reference voltage and clamp an output voltage to the clamping voltage when the voltage from the source exceeds the clamping voltage. A dynamic resistance of the feedback control circuit is substantially zero. 1. A system comprising: a reference circuit configured to generate a reference voltage based on the source voltage when the source voltage exceeds a clamping voltage; and', 'a feedback control circuit configured to receive the reference voltage and clamp an output voltage to the clamping voltage when the voltage from the source exceeds the clamping voltage, wherein a dynamic resistance of the feedback control circuit is substantially zero., 'a voltage surge protection circuit configured to receive a source voltage from a source, the voltage surge protection circuit comprising2. The system of wherein:an increase in the source voltage above the clamping voltage causes the feedback control circuit to sink an increased amount of current to maintain the output voltage at the clamping voltage; anda decrease in the source voltage above the clamping voltage causes the feedback control circuit to sink a reduced amount of current to maintain the output voltage at the clamping voltage.3. The system of wherein the reference voltage generated by the reference circuit is substantially constant when the source voltage varies.4. The system of wherein the reference voltage generated by the reference circuit is substantially constant when a current sank by the feedback control circuit varies.5. The system of wherein the reference voltage generated by the reference circuit is substantially constant in varying thermal conditions.6. The system of wherein the ...

Insulation monitoring device

An insulation monitoring device that carries out insulation monitoring of a power system or load apparatus using, for example, an Igr method includes a table in which a monitoring setting value Irref greater than a resistance component error current flowing in accordance with the sum of the electrical capacitance of a capacitor configuring a noise filter on the input side of the load apparatus and the ground insulation capacitance of the power system is set in advance in accordance with an operating schedule of the load apparatus, a monitoring setting value computing unit that outputs the monitoring setting value I rref read from the table in accordance with a current time according to a clock, and an insulation evaluation unit that detects an insulation failure caused by a decrease in ground insulation resistance when a resistance component current extracted by an I gr extraction unit exceeds the monitoring setting value I rref .

MONITOR DEVICE, GROUND FAULT PROTECTION CIRCUIT AND TECHNIQUES

A neutral grounding resistor fault protection arrangement. The fault protection arrangement may include a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non-ground end of the neutral grounding resistor; and a neutral grounding monitor, coupled to the non-ground end of the neutral grounding resistor, the neutral grounding monitor comprising an injection signal generator, the injection signal generator arranged to generate a frequency of 240 Hz or greater. 1. A fault protection arrangement , comprising:a neutral grounding resistor, the neutral grounding resistor comprising a ground end and a non-ground end; a sense circuit, coupled to the non-ground end of the neutral grounding resistor; and', 'an injection signal generator, coupled to the non-ground end of the neutral grounding resistor the injection signal generator arranged to generate a frequency of 240 Hz or greater., 'and a neutral grounding resistance monitor assembly, comprising2. The fault protection arrangement of claim 1 , further comprising:a capacitor, having a first electrode coupled to receive a signal from the injection signal generator, and a second electrode, coupled to the non-ground end of the neutral grounding resistor.3. The fault protection arrangement of claim 2 , wherein the capacitor comprises:a conductive wire, coupled to the non-ground end of the neutral grounding resistor; andconductive wrap, concentrically disposed around the conductive wire, and coupled to receive a signal from the injection signal generator.4. The fault protection arrangement of claim 2 , wherein the capacitor comprises:a printed circuit board body;a first conductive trace, disposed on a first surface of the printed circuit board body, and covering a majority of the first surface; anda second conductive trace, disposed one a second surface of the printed circuit board body, and covering a majority of the second surface, opposite ...

POWER SUPPLY CONTROL APPARATUS OF ELECTRIC LOAD

Disclosed is a power supply control apparatus of an electric load that includes an upstream side switching element and a downstream side switching element and detects various abnormality states of a load wiring by a small number of detection signals. The power supply control apparatus includes a control circuit unit that gives a power supply command signal to the upstream switching element connected in series with the electric load and gives a conduction command signal to the downstream switching element, open-circuits the upstream and downstream switching elements by a synthetic overcurrent determination storage circuit that is operated in response to an overcurrent detecting circuit, monitors a value of one variable divided voltage generated by the voltage monitoring circuit for the electric load, and identifies and stores a wiring abnormality such as a negative line supply fault, a positive line ground fault, and a load short circuit abnormality. 1. A power supply control apparatus of an electric load comprising:an upstream side switching element that is serially connected to the electric load on an upstream side of the electric load supplied with a load current by power supply from an external power source;a downstream side switching element that is serially connected to the electric load on a downstream side of the electric load; anda control circuit unit that uses a microprocessor as a main component and controls a conduction state of the upstream side switching element and the downstream side switching element, whereinwhen one switching element of the upstream side switching element and the downstream side switching element is abnormally short-circuited, the power supply is stopped by the other switching element,the power supply control apparatus includesan upstream overcurrent determination storage circuit that detects an upstream overcurrent as the load current flowing in the upstream side switching element exceeds a predetermined value to generate an ...

Electronic equipment item comprising a housing and at least one electronic board protected against lightning

An electronic equipment item for an electronic system, comprising a housing, a backplane board, at least one daughterboard and at least one lightning protection board housed in the housing. A connector is fixed to the backplane board and configured to be connected to the rest of the electronic system. For each daughterboard there is provided one lightning protection board. For each lightning protection board, a first port is arranged to connect the lightning protection board to the backplane board, and a second port is arranged to connect the daughterboard to the lightning protection board.

Fault identification and isolation in an electric propulsion system

An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises a plurality of branch isolation devices that are configured to isolate the at least one branch from the power source in response to a fault current at the at least one branch. In addition, the at least one branch comprises a respective pair of zone isolation devices for each respective zone from the one or more zones. The respective pair of zone isolation devices for each respective zone is configured to isolate the respective zone from the at least one branch, during a test of the at least one branch for identifying which of the one or more zones is a source of the fault current.

DEVICE AND METHOD FOR TESTING THE OPERATION OF A PROTECTION UNIT AND PROTECTION UNIT COMPRISING SUCH A TEST DEVICE

A device for testing the operation of a protection unit of an electrical network. The test device includes a generator for generating a pulse train in a secondary winding of a current transformer according to a profile of frequencies such that a measurement of the pulse train after passage through a low-pass filter is lower than a selected trip threshold, and a processing circuit arranged to identify a presence of the pulse train in a signal delivered by a second secondary winding of the current transformer. A protection unit including such a test device and to a method for testing an electrical protection unit. 1. A device for testing the operation of a protection unit of an electrical network , said protection unit comprising:a current transformer composed of a magnetic circuit positioned around at least one current conductor through which a primary current flows forming a primary circuit, said transformer comprising a first secondary winding wound around the magnetic circuit;a measurement circuit, connected to the first secondary winding, including a low-pass filter, and arranged to filter and to deliver, after filtering, a signal that is representative of the primary current and to deliver a measurement of the primary current; anda trip circuit, linked to the measurement circuit, including means for selecting a trip threshold,wherein said test device comprises:a second secondary winding wound around the magnetic circuit;a generator, linked to the trip circuit so as to acquire the selected trip threshold, arranged to generate a pulse train in the second secondary winding according to a profile of frequencies such that the measurement of the pulse train after passage through the low-pass filter is lower than the selected trip threshold; anda processing circuit, connected to the measurement circuit and to the generator, arranged to identify a presence of the pulse train in the signal that is representative of the primary current.2. The test device according to ...

System and method for determination of short-circuit ground location in electric networks

FIELD: electrical equipment. SUBSTANCE: in multiphase electrical network, powered by power source, short-circuit point (460) to ground is determined by power supply source, synchronized with electric network, which is connected between network zero point and grounding. In short-circuit current compensation mode (420), control unit controls alternating voltage source, to compensate for any earth fault current in the electrical network to a value below a threshold level. In short-circuit detection mode (430), control unit gradually adjusts output voltage of AC voltage source relative to amplitude and/or phase angle (440). Variation of zero sequence current and total conductivity of zero sequence between AC voltage source and short circuit point is measured (450) by means of at least one sensor. At least one sensor is connected to the control unit to communicate and registered measured values, which represent residual sequence current and/or full conductivity of zero sequence, control unit. In short-circuit detection mode, control unit determines short-circuit ground location (460) based on at least one of said measurement values, representing zero-sequence current and/or zero-sequence conductance variations, at which the exposed branch is disconnected (470) or the system switches to mode (420) of short circuit compensation. EFFECT: technical result is increase in short circuit currents elimination reliability and quick action. 7 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 737 863 C2 (51) МПК H02H 3/17 (2006.01) G01R 31/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК H02H 3/17 (2020.02); G01R 31/08 (2020.02) (21)(22) Заявка: 2018145025, 16.05.2017 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): СВИДИШ НЬЮТРАЛ АБ (SE) Дата регистрации: 04.12.2020 20.05.2016 SE 1650686-7 (43) Дата публикации заявки: 22.06.2020 Бюл. № 18 (45) Опубликовано: 04.12.2020 Бюл. № 34 (85) Дата ...

The electric protective device and method of subsystem are selectively disconnected in the case where the second failure occurs for IT power supply system

本发明涉及电气保护装置(20)和用于在不接地供电系统(2)发生第二故障的情况下选择性地断开子系统(6a，6b)的方法，不接地供电系统(2)由主系统(4)和至少一个子系统(6a，6b)组成，子系统(6a，6b)包括差动电流测量装置(12a，12b)和用于分离子系统(6a，6b)的开关装置(14a，14b)。本发明的基本思想是通过谐振耦合电路(22)生成测量信号电压(Um)并将其施加在主系统(4)的一个或多个相位和地之间或从主系统(4)的中性点到地(9)之间，谐振耦合电路(22)包括测量信号发生器(24)和与测量信号发生器(24)串联的串联谐振电路(26)，串联谐振电路(26)的谐振频率(f 0AK )被设置为和测量信号频率一致。

Arc fault detector with circuit interrupter and early arc fault detection

An arc fault detector comprised as a stand alone unit and in combination with a ground fault circuit interrupter (GFCI) functions to provide protection from potentially dangerous arc fault conditions. When combined with a GFCI, the combination arc fault/ground fault circuit interrupter (AFCI/GFCI) provides protection from both arc fault and ground fault conditions. A single transformer is used to detect faults between neutral and ground and arc faults. An impedance splits the current flow into two portions so as to generate differential current proportional to the current flowing through the conductors. An early arcing detector periodically tests the AC line for high impedance between the device and a main breaker panel. The AFCI/GFCI device detects both AC line frequencies and high frequencies associated with arcing. Both average and instantaneous values of both AC line frequency and high frequency arcing signals are processed to generate an arc fault signal. The device allows the arc detector to differentiate between destructive high level arcing and low level arcing such as generated by typical household appliances and equipment. This serves to decrease the occurrence of false tripping. The device also includes a timer circuit, which permits the user to temporarily disable the arc detector, and includes communication means to permit the device to communicate the occurrence and location of the arc fault to a centralized monitoring station.

Arcing fault and ground fault interrupting device for branch circuits and extensions

A fault detection device for an electrical distribution system comprises a single arcing fault detection device which can be shared among a plurality of branch circuits. A scanning device is connected to the arcing fault detection device. A line conductor from each of the branch circuits is provided to the arcing fault detection device. A current transformer is provided for each branch circuit to monitor its line conductor and to provide an output signal to the scanning device. the scanning device polls each current transformer for an output signal for a selected number of cycles and provides the output signal to the arcing fault detection device. The arcing fault detection device analyzes the output signals and, upon detection of an arcing fault condition in a branch circuit, shunts the line conductor of that branch circuit to ground via a resistance to induce ground fault condition in the ground fault interrupting device for that branch circuit.

Test circuit for an AFCI/GFCI circuit breaker

A novel toroidal core current sensor for an AFCI/GFCI Circuit Breaker and a test circuit configuration based thereon is disclosed. The current sensor has a plurality of load current conductors extending therethrough. One of the conductors carrying a load current has a portion of the load current shunted outside the core through a shunt conductor which is connected in parallel with one of the load current conductors. The secondary of the transformer outputs a current value proportional to and substantially less than the load current which may be, for example, detected by a control circuit which compares the current value against predetermined stored criteria and operates a circuit breaker accordingly. In the test circuit a power source and a waveform generator are provided for operating an AFCI\GFCI circuit breaker having the shunted current sensor and injecting test signals into a terminal of the circuit breaker. The unique properties of the shunted current sensor permit a wide range of fault conditions to be applied at low signal power because of the relatively high sensitivity the shunted current sensor provides to the AFCI\GFCI circuit breaker.

Identification system

A system for identifying the relative location of devices.

Method and device for improvement of detection reliability of generator ground fault at rotating electrical machine

FIELD: electricity. SUBSTANCE: method for improvement of detection reliability of generator ground fault at rotating electrical machine comprises delivery of a test signal at the preset frequency to the winding, measurement of the electric parameter response to the signal in the winding, which is a result of the delivered test signal and detection of the ground fault on the basis of the measured electric parameter value. At that frequency of the response signal is defined continuously and the measured value corresponding to a certain frequency is cleared out when this frequency deviates from the preset frequency at the first threshold value. EFFECT: higher reliability of detection. 10 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 539 098 C1 (51) МПК G01R 31/06 (2006.01) G01R 31/34 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013138745/28, 21.02.2011 (24) Дата начала отсчета срока действия патента: 21.02.2011 (73) Патентообладатель(и): АББ РИСЕРЧ ЛТД (CH) (45) Опубликовано: 10.01.2015 Бюл. № 1 R U Приоритет(ы): (22) Дата подачи заявки: 21.02.2011 (72) Автор(ы): ЙОХАНССОН Хенрик (SE), МЕНЕЗЕС Йозеф (SE), РОКСЕНБОРГ Стефан (SE), БЕНГТССОН Торд (SE) (56) Список документов, цитированных в отчете о поиске: SU 1698846 A1, 15.12.1991 . RU (85) Дата начала рассмотрения заявки PCT на национальной фазе: 23.09.2013 (86) Заявка PCT: 2 5 3 9 0 9 8 R U (87) Публикация заявки PCT: WO 2012/113440 (30.08.2012) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ И УСТРОЙСТВО ДЛЯ ПОВЫШЕНИЯ НАДЕЖНОСТИ ОБНАРУЖЕНИЯ КОРОТКОГО ЗАМЫКАНИЯ НА ЗЕМЛЮ ГЕНЕРАТОРА НА ВРАЩАЮЩЕЙСЯ ЭЛЕКТРИЧЕСКОЙ МАШИНЕ (57) Реферат: Изобретение относится к диагностике обмоток основании измеренного значения электрического электрических машин. Сущность: способ параметра. При этом непрерывно определяют обнаружения короткого замыкания на землю во частоту сигнала отклика ...

Apparatus for self-diagnosis of printed circuit board

본 발명 인버터 시스템에 있어서, 내부에 포함된 기판의 이상 유무를 테스트 할 수 있도록 한 것으로, 특히 전력 스위치 소자 구동을 위한 게이트 드라이버 제어 및 보호신호 발생을 위한 피드백 기판(feedback PCB)의 자기진단 장치에 관한 것이다.  In the inverter system of the present invention, it is possible to test whether there is an abnormality in the substrate included therein, and in particular, a self-diagnosis apparatus of a feedback PCB for controlling a gate driver for driving a power switch element and generating a protection signal. It is about. 인버터 시스템에 있어서, 피드백 기판은 제어에 필요한 입력 전압/전류, 직류단 전압/전류, 출력단 전류 및 엔코더 펄스 신호 등을 입력받아 제어수단으로 공급하게 되는 바, 상기 피드백 기판은 각 제어대상에 구성된 감지센서를 통해 피드백 신호를 얻어 제어수단으로 공급하게 되고, 제어수단에서는 이를 입력받아 정상적으로 시스템이 운용 되는 가를 판별하여 시스템을 제어하게 되는 데, 이러한 피드백 신호들은 시스템이 정상동작하기 전에는 제공받을 수 없으므로, 피드백 기판을 제작후 임의의 테스트를 위해서는 필요에 따라 피드백 각각의 신호를 만들어 공급해야만 하는 어려움이 있다. In the inverter system, the feedback substrate receives an input voltage / current, a DC stage voltage / current, an output stage current, an encoder pulse signal, and the like which are necessary for control, and supplies the same to the control means. The sensor receives the feedback signal through the sensor and supplies it to the control means, and the control means determines whether the system is normally operated by controlling the system. Such feedback signals cannot be provided until the system operates normally. After fabricating the feedback substrate, there is a difficulty in making and supplying a signal for each feedback as needed for any test. 본 발명에서는 이와 같은 문제점을 개선하기 위하여 가상의 피드백 신호 발생 및 공급장치를 구성하여 소정의 프로그램에 따라서 피드백 기판에 공급하도록 하므로써, 피드백 기판의 각 내부 구성부의 동작 상태를 용이하게 진단할 수 있도록 하는 것이다. In the present invention, in order to solve such a problem, a virtual feedback signal generation and supply device is configured to be supplied to a feedback board according to a predetermined program, thereby making it possible to easily diagnose the operating state of each internal component of the feedback board. will be.

Ground short circuit detection device

FIELD: electricity. SUBSTANCE: ground short circuit detection device injects voltage with the frequency different from nominal between neutral point of synchronous three-phase electric machine and ground and measures resultant currents at two measurement points different from each other. Ground short circuit is determined on the basis of resultant current. EFFECT: improving accuracy. 10 cl, 13 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 424 610 (13) C2 (51) МПК H02H 3/17 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009107851/07, 15.08.2007 (24) Дата начала отсчета срока действия патента: 15.08.2007 (73) Патентообладатель(и): АББ РИСЁЧ ЛТД (CH) (43) Дата публикации заявки: 27.09.2010 Бюл. № 27 2 4 2 4 6 1 0 (45) Опубликовано: 20.07.2011 Бюл. № 20 (56) Список документов, цитированных в отчете о поиске: WO 00/77906 A, 21.12.2000. RU 2014702 C1, 15.06.1994. RU 2246161 C1, 10.02.2005. SU 896712 A1, 07.01.1982. 2 4 2 4 6 1 0 R U (86) Заявка PCT: SE 2007/000724 (15.08.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.03.2009 (87) Публикация заявки РСТ: WO 2008/020798 (21.02.2008) Адрес для переписки: 191186, Санкт-Петербург, а/я 230, "АРСПАТЕНТ", пат.пов. М.В.Хмаре, рег. № 771 (54) УСТРОЙСТВО ДЛЯ ОПРЕДЕЛЕНИЯ ЗАМЫКАНИЯ НА ЗЕМЛЮ (57) Реферат: Использование: в области электротехники. Технический результат заключается в повышении точности. Устройство для определения замыкания на землю инжектирует напряжение с частотой, отличной от номинальной, между точкой нейтрали синхронной трехфазной электрической машины и землей и измеряет результирующие токи в двух точках измерения, отличных друг от друга. Замыкание на землю определяется на основе результирующего тока. 3 н. и 7 з.п. флы, 13 ил. Ñòð.: 1 ru R U Приоритет(ы): (30) Конвенционный приоритет: 18.08.2006 EP 06445061.2 (72) Автор(ы): ЙОХАНССОН Стефан Г. (SE), ФУЛЬЧИК Марек (PL), БЕНГТССОН Торд (SE), ЛИНДАЛ ...

Automatic circuit breaker for leak current protection

FIELD: electricity. SUBSTANCE: automatic circuit breaker (1) includes at least one total current converter (2), through which there passed is at least one first conductor (15) and one second conductor (16) of a protected network. Besides, at least one secondary winding (17) is installed in total current converter (2). Secondary winding (17) is connected indirectly kinematically to energy-accumulating element (5); with that, at least one discharge resistance element (4) is connected parallel to energy-accumulating element (5). Also, automatic circuit breaker (1) includes disconnector (7) kinematically connected to opening contacts, at least in the first conductor (15) and at least in the second conductor (16), at least one discharge resistance element (4) is formed with the first resistance section (4a), and at least with one resistance section (4b) connected in series with the first one, and at least one first electric signal device (20) is at least indirectly kinematically connected to the first resistance section (4a). EFFECT: improving reliability. 10 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 497 255 (13) C2 (51) МПК H02H 3/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011101389/07, 27.04.2009 (24) Дата начала отсчета срока действия патента: 27.04.2009 (72) Автор(ы): МАЙЗЕЛЬ Райнер (AT), РИТЦИНГЕР Георг (AT) (73) Патентообладатель(и): ИТОН ГМБХ (AT) R U Приоритет(ы): (30) Конвенционный приоритет: 18.06.2008 AT A977/2008 (43) Дата публикации заявки: 27.07.2012 Бюл. № 21 2 4 9 7 2 5 5 (45) Опубликовано: 27.10.2013 Бюл. № 30 (56) Список документов, цитированных в отчете о поиске: GB 2268011 A, 22.12.1993. RU 2069434 C1, 20.11.1996. DE 19940343 A1, 01.03.2001. DE 2555221 A1, 23.06.1977. 2 4 9 7 2 5 5 R U (86) Заявка PCT: AT 2009/000168 (27.04.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.01.2011 (87) Публикация заявки РСТ: WO 2009/152539 (23.12.2009) Адрес ...

Electronic module, electronic arrangement and method for producing an electronic module

一种电子模块（100）具有第一和第二电路（200，300），第一和第二电路（200，300）具有相应的第一和第二输出连接（230，330）、相应的第一和第二参考电势连接（220，320）以及相应的第一和第二感测连接（240，340），每个电路（200，300）包括相应感测块（250，350），感测块（250，350）在其输入侧连接到相应感测连接（240，340）和相应参考电势连接（220，320）。第一感测连接（240）连接到第一输出连接（230）或者连接到第二输出连接（330）。第二感测连接（340）连接到第二输出连接（330）。感测块（250，350）被配置成检测电子模块（100）的关于其相应参考电势连接（220，320）的失效并且通过在其相应输出连接（230，330）处提供失效信号来指示所检测到的失效。

Fault current circuit breaker

本发明涉及一种故障电流保护开关(1)，该故障电流保护开关包含至少一个总加电流互感器(2)，待保护的电网的至少一个第一导体(15)和至少一个第二导体(16)引导穿过所述至少一个总加电流互感器，其中，在总加电流互感器(2)上布置有至少一个次级线圈(17)，其中，该次级线圈(17)与至少一个储能元件(5)至少间接地有效连接，其中，至少一个放电电阻(4)与储能元件(5)并联，其中，所述故障电流保护开关(1)具有触发器(7)，该触发器与至少一个第一导体(15)和至少一个第二导体(16)中的分离触点有效连接，为了减少待保护电网的突然断电而提出，至少一个放电电阻(4)由第一分电阻(4a)和至少一个与该第一分电阻串联的第二分电阻(4b)形成，并且至少一个第一电气信号装置(20)至少间接地与第一分电阻(4a)有效连接。

CIRCUIT BREAKER CIRCUIT BREAKER

1. Автоматический выключатель (1) для защиты от тока утечки, содержащий по меньшей мере один преобразователь (2) суммарного тока, через который пропущены по меньшей мере один первый проводник (15) и один второй проводник (16) защищаемой сети, причем в преобразователе (2) суммарного тока установлена по меньшей мере одна вторичная обмотка (17), причем вторичная обмотка (17) опосредованно кинематически соединена с энергоаккумулирующим элементом (5), причем по меньшей мере одно разрядное сопротивление (4) включено параллельно энергоаккумулирующему элементу (5), причем автоматический выключатель (1) для защиты от тока утечки содержит размыкатель (7), кинематически соединенный с размыкающими контактами по меньшей мере в первом проводнике (15) и по меньшей мере во втором проводнике (16), отличающийся тем, что по меньшей мере одно разрядное сопротивление (4) образовано первой секцией (4а) сопротивления и по меньшей мере одной секцией (4b) сопротивления, включенной последовательно с первой, и что по меньшей мере одно первое электрическое сигнальное средство (20) по меньшей мере опосредованно кинематически соединено с первой секцией (4а) сопротивления. ! 2. Автоматический выключатель (1) для защиты от тока утечки по п.1, отличающийся тем, что первое электрическое сигнальное средство (20) по меньшей мере опосредованно включено параллельно первой секции (4а) сопротивления. ! 3. Автоматический выключатель (1) для защиты от тока утечки по п.1 или 2, отличающийся тем, что первое электрическое сигнальное средство (20) выполнено в виде оптического электрического сигнального средства, предпочтительно в виде первого электрического светящегося тела (8). ! 4. Ав� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 101 389 (13) A (51) МПК H02H 3/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): ИТОН ГМБХ (AT) (21)(22) Заявка: 2011101389/07, 27.04.2009 Приоритет(ы): (30) Конвенционный приоритет: 18.06.2008 AT A977/2008 (85) Дата начала ...

Branch circuit monitor system

A branch circuit monitoring system includes a plurality of current sensor modules that are installable in a panelboard. Each of the current sensor modules may be associated with a respective one of a plurality of branch circuits included in the panelboard. Each of the current sensor modules may include a current sensor, operating logic and a communication module. The current sensor may measure a power parameter of the respective branch circuit associated therewith. The operating logic may be coupled with the current sensor and the communication module, and may direct the overall functionality of the current sensor module. The communication module may be operable to communicate with a device external to the current sensor module.

Apparatus for injection-based ground fault protection handling

本发明涉及一种用于基于注入的接地故障保护处理的装置，该装置包括：电机(10)的多个定子绕组(12A，12B，12C)，该多个定子绕组(12A，12B，12C)连接到中性点(NP)；第一变压器(TR1)，包括至少一个初级绕组，该至少一个初级绕组连接到定子绕组(12A，12B，12C)的至少一个测量点(NP)；以及至少一个次级绕组，用于测量电机在测量点处的电气量。还存在第二变压器(TR2)，第二变压器具有初级绕组和次级绕组，该初级绕组连接在中性点(NP)与接地电势之间，该次级绕组用于连接到信号发生和检测单元(16)，以便将信号注入到中性点(NP)并且接收响应。第二变压器(TR2)的阻抗在电机(10)的阻抗的范围内。

ELECTRICAL INSTALLATION

1. Электрическая установка (1), содержащая электрическую сеть (2) распределения энергии и/или по меньшей мере один первый электрический прибор (3), отличающаяся тем, что на и/или в электрической сети (2) распределения энергии и/или по меньшей мере одном первом электрическом приборе (3) размещены средства (4) для определения источника неисправности посредством выделения источника вслепую, предпочтительно для определения местоположения по меньшей мере одного первого электрического источника неисправности, в частности по меньшей мере одного первого источника тока повреждения и/или одной первой зоны перегрузки. ! 2. Электрическая установка (1) по п.1, отличающаяся тем, что средства (4) для определения источника неисправности посредством выделения источника вслепую включают в себя по меньшей мере один первый сенсор (5) и один второй сенсор (6) для детектирования по меньшей мере одного первого физического параметра, который индуцирован электрической установкой (1) или на который может оказывать влияние электрическая установка (1). ! 3. Электрическая установка (1) по п.1 или 2, отличающаяся тем, что средства (4) для определения источника неисправности посредством выделения источника вслепую включают в себя по меньшей мере одно устройство (7) определения неисправностей для определения источника неисправности в электрической установке (1) посредством выделения источника вслепую. ! 4. Электрическая установка (1) по п.3, причем электрическая сеть (2) распределения энергии имеет по меньшей мере одну первую электрическую частичную сеть (8) и одну вторую электрическую частичную сеть (9) для подключения электрических приборов (3), причем перва РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2011 101 533 (13) A (51) МПК H02H 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (71) Заявитель(и): ИНТОН ГМБХ (AT) (21)(22) Заявка: 2011101533/07, 30.04.2009 Приоритет(ы): (30) Конвенционный приоритет: 18.06.2008 AT A975/2008 (72) Автор(ы): КОХ Михель (AT) (85 ...

Electric leakage crossing gate with device for sensing electric spark

본 고안은 전기 스파크감지장치를 갖는 누전차단기에 관한 것으로서, 더욱 상세하게는 누전차단기의 동작회로의 시험용 버튼스위치 선로에서 전선을 인출하여 단자를 삽입 연결하고 그 단자에 누전차단기의 본래기능 외에 별도기능을 가진 기구를 삽입 연결할 수 있도록 기존의 누전차단기에서 해결할 수 없는 기능의 장치 즉, 무선제어장치 및 전기 선로의 접속불량에 의한 스파크 감지장치 등을 연결하여 사용함으로써, 전기 선로에서 발생하는 재해를 미연에 방지할 수 있도록 한 전기 스파크감지장치를 갖는 누전차단기에 관한 것이다. The present invention relates to an earth leakage circuit breaker having an electrical spark detection device, and more particularly, a wire is drawn out from a test button switch line of a test circuit of an earth leakage circuit breaker, and a terminal is inserted and connected to the terminal. By connecting and using a device having a function that cannot be solved by an existing earth leakage breaker, such as a radio control device and a spark detection device due to a poor connection of an electric line, an accident occurring in an electric line can be prevented. An earth leakage circuit breaker having an electrical spark detection device capable of preventing the same. 이를 위해, 본 고안은 누전감지회로장치의 시험용 버튼스위치의 접점회로에 연결 설치된 별도기능장치 연결단자와; 상기 단자에 연결된 별도기능에 필요한 외부연결장치;를 포함하여 구성되고, 상기 별도기능의 외부연결장치가 동작하면 단자회로가 온 되게 하여 누전차단기가 오프되는 것을 특징으로 하는 전기 스파크감지장치를 갖는 누전차단기를 제공한다. To this end, the present invention is connected to a separate functional device connecting terminal installed in the contact circuit of the button switch for the test of the earth leakage detection circuit device; An external connection device necessary for a separate function connected to the terminal; and an electric leakage detecting device having an electrical spark detection device, characterized in that the circuit breaker is turned off by turning on the terminal circuit when the external connection device of the separate function operates. Provide a breaker. 누전차단기, 별도기능장치 연결단자, 외부연결장치 Earth leakage breaker, separate function device connection terminal, external connection device

For the method for adaptation of ground fault detection

本发明涉及一种用于针对电机状态的改变来适配接地故障检测的方法，其中电机包括绕组。电机在第一机器状态中，针对电气量的测量值定义第一参考值。接地故障检测包括连续测量绕组中的电气量，并且基于电气量的测量值和第一参考值检测接地故障。该方法包括：接收信号(101，102)，基于接收的信号检测机器状态改变(120)，并且在检测到机器状态改变时改变成用于电气量的测量值的第二参考值(100)，第二参考值不同于第一参考值。

Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine

A method for enhancing the reliability of generator ground fault detection based on a signal injection scheme, wherein the generator includes a winding. The method includes injecting a test signal at a predefined frequency to the winding, measuring an electrical quantity of a response signal in the winding resulted from the injected test signal, and detecting a ground fault based on the measured value of the electrical quantity. The method further includes continuously determining the frequency of the response signal, and discarding the present measured value corresponding to the determined frequency when the determined frequency deviates from the predefined frequency with a first threshold value.

Aircraft electronic circuit breaker, using computer generated single processing chain for load output control

Le dispositif électronique (10) de disjonction, comporte au moins deux sorties (22) adaptées pour être connectées à des charges, chaque sortie (22) étant associée à un organe propre de commutation (16) adapté pour assurer l'alimentation de la sortie associée (22) en fonction d'un signal de commande, et des moyens (14) de commande desdits organes de commutation (16) comportant, pour chaque sortie (22), un capteur (30) du courant fourni à la charge et des moyens de traitement adaptés pour fournir, pour chaque organe de commutation (16), ledit signal de commande en fonction du courant fourni à la charge. Ces moyens de traitement comportent une unique chaîne de traitement (40), laquelle chaîne de traitement (40) comporte au moins un élément (70) de traitement commun à chacune des sorties (22). Application au dispositif de jonction pour avion.

DEVICE AND METHOD FOR PROTECTING A CONNECTION OF A MEDIUM, HIGH OR VERY HIGH VOLTAGE ELECTRICAL NETWORK.

L'invention concerne un dispositif et un procédé de protection d'une liaison d'un réseau électrique moyenne, haute ou très haute tension, des transformateurs de courant et de tension et des circuits de déclenchement étant disposés sur cette liaison. Ce dispositif comprend des moyens de raccordement direct à une alimentation, aux transformateurs de courant et de tension et aux circuits de déclenchement via des liaisons analogiques (12) et des moyens de conversion analogique-numérique reliés à une unité centrale de traitement via une liaison numérique (21), les moyens de conversion analogique-numérique (25) comprenant une fonction prise test intégré. The invention relates to a device and a method for protecting a link of a medium, high or very high voltage electrical network, current and voltage transformers and tripping circuits being arranged on this link. This device comprises means for direct connection to a power supply, to current and voltage transformers and to trip circuits via analog links (12) and to analog-to-digital conversion means connected to a central processing unit via a digital link. (21), the analog-to-digital converting means (25) comprising an integrated test taking function.

ELECTRICAL CONNECTION COMPRISING AN ELECTRICAL PROTECTION DEVICE.

- La liaison électrique, destinée à relier un générateur de haute tension alternative (2) à un équipement utilisateur, comprend un conducteur électrique (4) entouré d'une première enveloppe isolante interne, ainsi qu'un dispositif de protection électrique comprenant une gaine conductrice (7) agencée autour de l'enveloppe isolante interne, un générateur de courant continu fixe (10) connecté à un point d'injection de courant (13) de la gaine conductrice (7), un coupe-circuit (9) activable agencé sur le conducteur électrique (4) et configuré pour couper la liaison électrique (8) lorsqu'il est activé, et un module de détection (11) connecté à un point de prélèvement de courant (14) de la gaine conductrice (7) et au coupe-circuit (9), le module de détection (11) étant configuré pour détecter une coupure de la gaine conductrice (7) ou une fuite de courant hors du conducteur électrique (4) ou une fuite de courant hors de la gaine (7) et activer le coupe-circuit (9). - The electrical connection, intended to connect an AC high voltage generator (2) to a user equipment, comprises an electrical conductor (4) surrounded by a first internal insulating envelope, and an electrical protection device comprising a conductive sheath (7) arranged around the internal insulating casing, a fixed DC generator (10) connected to a current injection point (13) of the conductive sheath (7), an activatable circuit breaker (9) arranged on the electrical conductor (4) and configured to cut the electrical connection (8) when activated, and a detection module (11) connected to a current draw point (14) of the conductive sheath (7) and at the circuit breaker (9), the detection module (11) being configured to detect a break in the conductive sheath (7) or a current leak out of the electrical conductor (4) or a leakage of current out of the sheath ( 7) and activate the circuit breaker (9).

VOLTAGE MEASURING DEVICE.

DEVICE AND METHOD FOR TESTING THE OPERATION OF A PROTECTIVE APPARATUS AND PROTECTIVE APPARATUS COMPRISING SUCH A DEVICE FOR TESTING

L'invention porte sur un dispositif de test (1) du fonctionnement d'un appareil de protection (2) d'un réseau électrique. Le dispositif de test comporte : - un générateur (6) pour générer un train d'impulsions (65) dans un enroulement secondaire d'un transformateur de courant (3) selon un profil de fréquences tel qu'une mesure du train d'impulsions (65) après passage dans un filtre passe-bas (44) soit inférieure à un seuil de déclenchement sélectionné (Sd), et - un circuit de traitement (7) agencé pour identifier une présence du train d'impulsions (65) dans un signal délivré par un second enroulement secondaire du transformateur de courant. L'invention porte également sur un appareil de protection (2) comportant un tel dispositif de test (1) et sur un procédé de test d'un appareil de protection électrique. The invention relates to a device for testing (1) the operation of a protective device (2) of an electrical network. The test device comprises: - a generator (6) for generating a pulse train (65) in a secondary winding of a current transformer (3) according to a frequency profile such as a measurement of the pulse train (65) after passing through a low-pass filter (44) is less than a selected trigger threshold (Sd), and - a processing circuit (7) arranged to identify a presence of the pulse train (65) in a signal delivered by a second secondary winding of the current transformer. The invention also relates to a protection device (2) comprising such a test device (1) and to a method of testing an electrical protection device.

DEVICE AND METHOD FOR PROTECTING A CONNECTION OF A MEDIUM, HIGH OR VERY HIGH VOLTAGE ELECTRICAL NETWORK.

ELECTRICAL CONNECTION COMPRISING AN ELECTRICAL PROTECTION DEVICE - CURRENT POLARIZATION

L'invention concerne une liaison électrique (8) adaptée à relier une source d'énergie haute tension à courant continu (2) à un équipement utilisateur (5), la liaison électrique comprenant un conducteur électrique (4) entouré d'une enveloppe isolante (4a), caractérisé en ce que la liaison électrique (8) comprend un dispositif de protection (3) électrique comprenant : - une gaine conductrice (7) arrangé autour de l'enveloppe isolante (4a), - un générateur de courant (10) connecté à un point d'injection de courant (30) de la gaine conductrice (7), - un coupe-circuit (9) arrangé sur le conducteur configuré pour couper un courant transitant via le conducteur (4), et - un module de détection (11) connecté à un point de prélèvement de courant (31) de la gaine conductrice (7) et au coupe-circuit (9) et configuré pour détecter une fuite de courant hors du conducteur (4) et commander le coupe-circuit (9). The invention relates to an electrical connection (8) suitable for connecting a high voltage direct current power source (2) to user equipment (5), the electrical connection comprising an electrical conductor (4) surrounded by an insulating casing. (4a), characterized in that the electrical connection (8) comprises an electrical protection device (3) comprising: - a conductive sheath (7) arranged around the insulating casing (4a), - a current generator (10 ) connected to a current injection point (30) of the conductive sheath (7), - a circuit breaker (9) arranged on the conductor configured to cut a current flowing through the conductor (4), and - a module sensor (11) connected to a current sampling point (31) of the conductive sheath (7) and to the circuit breaker (9) and configured to detect a current leakage out of the conductor (4) and to control the cutout. circuit (9).

SYSTEM FOR PROTECTING ELECTRIC CIRCUITS.

Ce système de protection de circuits électriques (60, 61, 62) permet une analyse de l'évolution en temps réel des courants électriques circulant dans ces circuits électriques, cette analyse ayant pour but de faire non seulement de la protection, mais de la prévention. Il comprend au moins un disjoncteur (64, 66) comportant une première bobine (70, 71) associée à un circuit magnétique et traversée par le courant principal, ainsi qu'une deuxième bobine (74, 75) également associée au circuit magnétique. Cette deuxième bobine est parcourue par un courant induit représentatif du courant électrique principal. Ce courant induit est traité par un circuit électronique (80) fournissant un signal traité représentatif d'au moins une caractéristique du courant principal, laquelle est utilisée pour la prévention des circuits électriques.

CIRCUIT BREAKER WITH DIGITAL STATIC TRIGGER PROVIDED WITH A CALIBRATION CIRCUIT

DECLENCHEUR STATIQUE A MICROPROCESSEUR 48 DE TRAITEMENT DE SIGNAUX NUMERIQUES DERIVES DE SIGNAUX ANALOGIQUES DELIVRES PAR DES CAPTEURS DE COURANT 16. LES SIGNAUX ANALOGIQUES SONT APPLIQUES A UN CIRCUIT DE CALIBRAGE 34, QUI ADAPTE LA DYNAMIQUE DE SORTIE DESCIRCUITS ANALOGIQUES A CELLE DES CIRCUITS LOGIQUES, POUR OBTENIR AVEC UN CONVERTISSEUR ANALOGIQUE DIGITAL 50 A 8BITS ASSOCIES A UN MULTIPLEXEUR 29 UNE DYNAMIQUE EQUIVALENTE A DES CHAINES A 12BITS.

SWITCHBOARD.

Electronic thermal protection device.

La présente invention concerne un dispositif électronique de protection thermique destiné à interrompre l'alimentation sur une ligne polyphasée (L1 , L2 , L3 ), comprenant un détecteur thermique (1) doté d'un élément résistif (11) thermiquement couplé à un capteur de température (14), celui-ci étant connecté à un circuit numérique de traitement (3) apte à fournir un ordre de commande en fonction de la surcharge détectée par le capteur de température (14) et caractérisé par le fait que l'élément résistif (11) du détecteur thermique est connecté aux différents redresseurs (R1 , R2 , R3 ) alimentés chacun par un transformateur d'intensité (Ti1 , Ti2 , Ti3 ) installé sur un fil de ligne de manière que ledit élément résistif (11) soit parcouru par la somme des courants (i2 ) délivrés par les redresseurs (R1 , R2 , R3 ). The present invention relates to an electronic thermal protection device intended to interrupt the supply on a polyphase line (L1, L2, L3), comprising a thermal detector (1) provided with a resistive element (11) thermally coupled to a sensor. temperature (14), the latter being connected to a digital processing circuit (3) capable of supplying a control command as a function of the overload detected by the temperature sensor (14) and characterized in that the resistive element (11) of the thermal detector is connected to the various rectifiers (R1, R2, R3) each supplied by an intensity transformer (Ti1, Ti2, Ti3) installed on a line wire so that said resistive element (11) is traversed by the sum of the currents (i2) delivered by the rectifiers (R1, R2, R3).

CIRCUIT BREAKER WITH DIGITAL STATIC TRIGGER PROVIDED WITH A CALIBRATION CIRCUIT

Protective device for polyphase electrical networks

Improvements to electrical protection devices

Distributed Reflectometry Cable Condition Monitoring System

Système de surveillance de l’état d’un câble (C), comprenant une pluralité de dispositifs de réflectométrie (M1,M2,M3,…Mn-1,Mn) aptes à injecter un signal de test en un point d’injection du câble et mesurer un signal rétro-propagé dans le câble au point d’injection du câble, les dispositifs de réflectométrie étant destinés à être positionnés le long du câble de sorte à décomposer le câble en tronçons successifs (S1,S2…Sn), le système comprenant un organe de contrôle (CTRL) apte à communiquer avec les dispositifs de réflectométrie et configuré de manière à réaliser au moins un test de réflectométrie consistant à injecter un signal de test dans le câble au moyen d’un premier dispositif de réflectométrie et mesurer le signal de test, au moyen du premier dispositif de réflectométrie, après sa propagation dans le câble et sa réflexion sur une discontinuité d’impédance, le système comprenant en outre un organe de post-traitement (PTR) apte à communiquer avec les dispositifs de réflectométrie et configuré pour analyser la mesure du signal de test pour détecter un pic d’amplitude correspondant à un défaut. Figure 1 System for monitoring the condition of a cable (C), comprising a plurality of reflectometry devices (M1, M2, M3,… Mn-1, Mn) capable of injecting a test signal at an injection point of the cable and measure a signal back propagated in the cable at the cable injection point, the reflectometry devices being intended to be positioned along the cable so as to break down the cable into successive sections (S1, S2 ... Sn), the system comprising a control unit (CTRL) capable of communicating with the reflectometry devices and configured so as to perform at least one reflectometry test consisting of injecting a test signal into the cable by means of a first reflectometry device and measuring the test signal, by means of the first reflectometry device, after its propagation in the cable and its reflection on an impedance discontinuity, the system further comprising a post- ...

Ground fault detection

The present invention relates to a ground fault detection arrangement for a synchronous three-phase electrical machine, and an electrical system comp rising a ground fault detection arrangement and a synchronous three-phase el ectrical machine. The ground fault detection arrangement injects an off-nomi nal frequency voltage between a neutral point of the synchronous three-phase electrical machine and ground and measure resultant currents to detect a gr ound fault.

Improvements to electrical protection systems

Inrush current suppressor circuit

Disclosed is an inrush current suppressor circuit of a power supply circuit that supplies stand-by voltage from AC voltage. At a stand-by mode, only a diode and a resistor for suppressing inrush current are provided, and a capacitor provided in common between a stand-by power supply part and a start-up power supply part is charged, so that the inrush current is suppressed at both of stand-by and start-up modes and the number of devices of a circuit and power consumption are reduced.

Electric board, has phase disconnection circuit with magnetic detection unit detecting short-circuit in circuits, and control units controlling opening of interrupters in case of overload defect in one of circuits

The board has starting devices (2) with electric phase protection circuits (6) electric load detection units (9) controlling interrupter control units (15) respectively. A main device (1) has a differential detection unit (12) and a phase disconnection circuit (4) with magnetic detection unit (16) detecting a short-circuit in the circuits (6). The units (12, 16) open interrupters (7, 8) of the device (1), in case of a differential or short-circuit defect in one of the circuits (6). The units (15) control the opening of the interrupters in case of an overload defect in one of the circuits.

A display apparatus

본 실시예에 따른 영상표시장치는 영상이 표시되는 피디피 모듈로 서스테인 전압을 공급하는 Vs 출력부; 상기 Vs 출력부의 동작을 제어하는 보호 회로; 상기 Vs 출력부를 통하여 출력된 서스테인 전압으로부터 전류 성분을 검출하는 전류 검출부; 및 상기 전류 검출부를 통하여 출력되는 신호를 적분하는 적분회로가 구비되고, 상기 적분회로에 의해서 연산되는 누적값으로부터 상기 보호 회로의 동작을 제어하는 마이컴;이 포함된다. 영상표시장치

Apparatus for detecting arcing faults and ground faults in multiwire branch electric power circuits

A multiwire branch circuit including two line conductors and a grounded, common neutral conductor is protected by a two pole circuit breaker connected to interrupt current flow in the two ungrounded line conductors. Three separate protection circuits provide arc fault protection for each of the ungrounded line conductors and ground fault protection for all three conductors. The arc fault detectors use the bimetal of the thermal-magnetic trip device for the associated line conductor, and therefore, are individually referenced to the associated line voltage. Hence, the outputs of the arc fault detectors are electrically isolated from each other and from the output of the ground fault detector, but operate a common trip circuit to open the two pole circuit breaker. The arc fault detectors have separate isolated power supplies. The ground fault detector is powered by a supply which is energized if either of the ungrounded line conductors is energized.

PIM module overcurrent fault detection and overcurrent protection device and method

本发明涉及一种PIM模组过流故障检测及过流保护装置、方法，所述PIM模组过流故障检测及过流保护装置包括：第一采样模块，用于获取PIM模组的直流母线电压信号；分压比较模块，用于将所述直流母线电压信号的电压值与预先设定的电压值进行比较；定时模块和信号触发模块，所述信号触发模块用于根据所述定时模块发出的脉宽可调故障信号实现高低电平的转换，以控制PIM模组的驱动芯片执行打开或关闭PIM模组驱动信号。本发明能够提高空调变频控制器稳定性，保证机组工作在可靠的条件下；当变频控制器出现故障时能够及时进行保护，防止对电路造成多次损坏；整体实现经济可靠，兼顾可靠性和实用性。

ELECTRONIC EQUIPMENT COMPRISING A CASE AND AT LEAST ONE ELECTRONIC CARD PROTECTED AGAINST LIGHTNING

Current transformer for protecting the neutral of a four-pole protective electrical apparatus

In a four-pole circuit breaker with electronic trip the current transformer associated with the neutral pole 10N includes two coils 32, 34 whose ends 36 to 42 are accessible. A connection system enables these ends 36 to 42 to be interconnected in order to produce selectively, either a series connection of the coils 32, 34, or a parallel connection, or a short-circuit connection. These three types of connection enable three types of protection to be produced, in this instance a protection identical to that of the phases, a neutral protection half that of the phases and no protection of the neutral.

Device and method for protecting a link in a medium-, high- or very high-voltage electric network

The invention relates to a device and to a method for protecting a link in an electric network. Said device further includes: a base portion (31, 61) connected to the supply voltage, to the current and voltage transformers, and to the trip circuits; an active portion (30, 60) provided with at least one socket (35, 67) that can be inserted onto the base portion; and a test portion (40, 60) for injecting currents and voltage, which can be inserted onto a socket of the active portion.

An apparatus for protecting a subscriber line interface circuit against overvoltages

An apparatus for protecting a subscriber line interface circuit (1) against overvoltages occurring on its two input wires (A, B) and exceeding the voltage of the supply voltage source of the subscriber line interface circuit (1). A resistor (RA, RB) is connected in series with a respective input wire (A, B) to respective input terminals (LA, LB) of the subscriber line interface circuit. Each input terminal (LA, LB) is connected to the anode of a respective first diode (DA1, DB1), whose cathode is connected to the positive terminal of the supply voltage source, and also to the cathode of a respective second diode (DA2, DB2). The anodes of the second diodes are connected to the cathode of a thyristor (TAB) which is common to the second diodes. The anode of the thyristor is connected to the positive terminal of the supply voltage source and the gate of the thyristor is connected to the negative terminal of the supply voltage source.

Preventing ac voltage measurement circuit extremely leads to the virtual AC voltage method of direct current locking

本发明公开了一种防止交流电压采样异常导致直流闭锁的虚拟电交流压方法，在判断交流电压测量回路异常时，采用原正常电压幅值和相位生成虚拟电压代替实际电压，异常持续一定时间后切系统。本方法针对常规直流和柔性直流均适用。能够识别空开误跳、空开接触不良等故障。

Abnormality detection device

桥式电路(10)中，形成有电阻(R1)与电阻(R2)串联连接且电阻(R2)与电阻(R4)串联连接的串联电路(11)。而且，桥式电路(10)中，串联电路(11)与负载部(R3)并联连接，电阻(R5)的一端连接在电阻(R2)与电阻(R4)之间，电阻(R5)的另一端连接在电阻(R1)与负载部(R3)之间。而且，桥式电路(10)中，电压供给部(20)连接在电阻(R1)与电阻(R2)之间。控制部(40)基于通过在断开开关(3)的状态下从电压供给部(20)施加电压(V)而检测出的桥式电路(10)的检测电压来检测负载部(R3)的异常。通过该结构，异常检测装置(1)能够在抑制大型化的基础上检测异常。

Battery protection circuit package module

Method and device for enhancing the reliability of generator ground fault detection on a rotating electrical machine

The present invention relates to a method for enhancing the reliability of generator ground fault detection based on a signal injection scheme, wherein the generator including a winding. The method comprises injecting a test signal at a predefined frequency to the winding (100), measuring an electrical quantity of a response signal in the winding resulted from the injected test signal (110), and detecting a ground fault based on the measured value of the electrical quantity (150). The method further comprises continuously determining the frequency of the response signal (120), and discarding the present measured value corresponding to the determined frequency (140) when the determined frequency deviates from the predefined frequency with a first threshold value (135).

Method and apparatus for fault condition detection in the power supply to a load

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Detektion von Fehlerzuständen bei der Energieversorgung einer Last, beispielsweise einer Detektion eines Drahtbruches oder eine Detektion des Vorliegens von Überlastzuständen. Dabei wird ein Spannungsabfall an einem Messwiderstand ausgewertet, welcher in einem Messsignalweg angeordnet ist, der parallel zum Hauptsignalweg verläuft. Der Messsignalweg wird nur kurzzeitig aktiviert, so dass die entstehende Verlustleistung klein ist. The invention relates to a method and a device for detecting fault conditions in the power supply of a load, for example a detection of a wire break or a detection of the presence of overload conditions. In this case, a voltage drop is evaluated at a measuring resistor, which is arranged in a Meßsignalweg, which is parallel to the main signal path. The measurement signal path is only activated for a short time, so that the resulting power loss is small.

Fault identification and isolation in an electric propulsion system

An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises a plurality of branch isolation devices that are configured to isolate the at least one branch from the power source in response to a fault current at the at least one branch. In addition, the at least one branch comprises a respective pair of zone isolation devices for each respective zone from the one or more zones. The respective pair of zone isolation devices for each respective zone is configured to isolate the respective zone from the at least one branch, during a test of the at least one branch for identifying which of the one or more zones is a source of the fault current.

Fault current circuit breaker

本发明涉及一种故障电流保护开关(1)，该故障电流保护开关包含至少一个总加电流互感器(2)，待保护的电网的至少一个第一导体(15)和至少一个第二导体(16)引导穿过所述至少一个总加电流互感器，其中，在总加电流互感器(2)上布置有至少一个次级线圈(17)，其中，该次级线圈(17)与至少一个储能元件(5)至少间接地有效连接，其中，至少一个放电电阻(4)与储能元件(5)并联，其中，所述故障电流保护开关(1)具有触发器(7)，该触发器与至少一个第一导体(15)和至少一个第二导体(16)中的分离触点有效连接，为了减少待保护电网的突然断电而提出，至少一个放电电阻(4)由第一分电阻(4a)和至少一个与该第一分电阻串联的第二分电阻(4b)形成，并且至少一个第一电气信号装置(20)至少间接地与第一分电阻(4a)有效连接。

Current measurement

The present invention relates to current measurement apparatus. The current measurement apparatus comprises first and second measurement devices with each of the first and second measurement devices being operative to measure current in a respective one of a live conductor and a neutral conductor substantially simultaneously. The current measurement apparatus is operative to make plural different determinations in dependence on the substantially simultaneous current measurements.

Electronic circuit breaker system

CIRCUIT ARRANGEMENT FOR POWERING A VARIETY OF CONSUMERS.

The circuitry has a load line and mode switch in each load, a main line connecting the load lines to the power source, and a protection device protecting against overcurrent and/or overvoltage. The protection device has a fast protection switch in series with the loads in the main line. The protection switch opens automatically when a voltage deviating from the rated voltage appears or in the presence of excessive current. The protection device includes a sensor monitoring the current in the main line and/or the voltage and producing an output signal to control the fast protection switch.

ELECTRICAL CONNECTION COMPRISING AN ELECTRICAL PROTECTION DEVICE.

- La liaison électrique, destinée à relier un générateur de haute tension alternative (2) à un équipement utilisateur, comprend un conducteur électrique (4) entouré d'une première enveloppe isolante interne, ainsi qu'un dispositif de protection électrique comprenant une gaine conductrice (7) agencée autour de l'enveloppe isolante interne, un générateur de courant continu fixe (10) connecté à un point d'injection de courant (13) de la gaine conductrice (7), un coupe-circuit (9) activable agencé sur le conducteur électrique (4) et configuré pour couper la liaison électrique (8) lorsqu'il est activé, et un module de détection (11) connecté à un point de prélèvement de courant (14) de la gaine conductrice (7) et au coupe-circuit (9), le module de détection (11) étant configuré pour détecter une coupure de la gaine conductrice (7) ou une fuite de courant hors du conducteur électrique (4) ou une fuite de courant hors de la gaine (7) et activer le coupe-circuit (9). - The electrical connection, intended to connect an AC high voltage generator (2) to a user equipment, comprises an electrical conductor (4) surrounded by a first internal insulating envelope, and an electrical protection device comprising a conductive sheath (7) arranged around the internal insulating casing, a fixed DC generator (10) connected to a current injection point (13) of the conductive sheath (7), an activatable circuit breaker (9) arranged on the electrical conductor (4) and configured to cut the electrical connection (8) when activated, and a detection module (11) connected to a current draw point (14) of the conductive sheath (7) and at the circuit breaker (9), the detection module (11) being configured to detect a break in the conductive sheath (7) or a current leak out of the electrical conductor (4) or a leakage of current out of the sheath ( 7) and activate the circuit breaker (9).