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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4264. Отображено 100.
05-03-2021 дата публикации

Трансформатор тока с газовой изоляцией

Номер: RU0000202764U1
Автор: Алексей Владимирович Матвеев, Артем Викторович Рубис, Владимир Николаевич Острейко, Денис Валерьевич Мунштуков, Дмитрий Владимирович Иванов, Дмитрий Сергеевич Ярошенко, Иван Иванович Носов
Принадлежит: Закрытое акционерное общество "Завод электротехнического оборудования" (ЗАО "ЗЭТО")

Полезная модель относится к электротехнике и может быть использована в комплектных распределительных устройствах с газовой изоляцией.Сущность полезной модели заключается в том, что в известном трансформаторе тока с газовой изоляцией, содержащем металлический заземленный корпус с первым фланцем и плоскостью его закрепления, расположенной перпендикулярно продольной оси трансформатора, и вторым фланцем и плоскостью его закрепления, а также с полостью, заполненной изолирующим газом, в которой размещены первичная обмотка, контакт первичной обмотки с контактной плоскостью, изолятор, установленный на втором фланце корпуса, блок вторичных обмоток и блок вторичных выводов, согласно полезной модели, плоскость присоединения второго фланца корпуса и контактная плоскость контакта первичной обмотки выполнены параллельными продольной оси трансформатора.Выполнение трансформатора тока в соответствии с формулой полезной модели и использование его в ячейке КРУЭ уменьшает габаритный размер ячейки, например высоту.Полезная модель реализована на ЗАО «ЗЭТО» (г. Великие Луки) в ячейке КРУЭ-110. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 202 764 U1 (51) МПК H01F 38/30 (2006.01) H01F 27/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК H01F 38/30 (2020.08); H01F 27/04 (2020.08) (21)(22) Заявка: 2020138448, 23.11.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.03.2021 (45) Опубликовано: 05.03.2021 Бюл. № 7 2 0 2 7 6 4 R U (56) Список документов, цитированных в отчете о поиске: RU 2211499 C2, 27.08.2003 . UA 18137 A, 31.10.1997. UA 2871 A, 26.12.1994. SU 1805784 A1, 10.09.1995. SU 153906 A3, 23.01.1990. DE 1804114 A1, 26.02.1970. (54) ТРАНСФОРМАТОР ТОКА С ГАЗОВОЙ ИЗОЛЯЦИЕЙ (57) Реферат: Полезная модель относится к электротехнике первичной обмотки с контактной плоскостью, и может быть использована в комплектных изолятор, установленный на втором фланце распределительных устройствах с газовой корпуса, блок ...

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Номер записи: 1
16-02-2012 дата публикации

Apparatus and Method for Mounting an Overhead Monitoring Device

Номер: US20120038446A1
Автор: Bruce W. Mcbee, Bryan C. Cochran, Gregg James Haensgen, John Fredrick Banting, William J. Kostolni
Принадлежит: Cooper Technologies Co

An apparatus is provided for securing to and collecting power from an electrical conductor including a wire clamp that clamps and secures to an electrical conductor, a current transformer (“CT”) that clamps to the electrical conductor and collects power from the electrical conductor, and a housing that supports the wire clamp and the current transformer. According to various aspects, the apparatus may include a wire clamp including a compression post and clamp arms that surround and compress an electrical conductor in a closed position of the wire clamp, where each of the clamp arms includes pivot posts, and the clamp arms pivot between closed and open positions. According to other various aspects, the apparatus may include a split magnetic core that surrounds an electrical conductor in a closed position of the current transformer, where the split magnetic core includes pivot posts, and the split magnetic core pivots between closed and open positions.

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Номер записи: 2
15-03-2012 дата публикации

Direct-current current transformer

Номер: US20120063055A1
Автор: William Henry Morong
Принадлежит: Individual

The present invention provides a direct-current current transformer, or DCCT, yielding bandwidth from DC to several MHz. The DCCT according to this invention is a simple, open-loop, device in which flux densities occur at very low levels, avoiding difficulties occasioned by core saturation.

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Номер записи: 3
30-08-2012 дата публикации

Inductive monitoring of a power transmission line of an electrical network

Номер: US20120217975A1
Автор: Jeffrey M. Drazan
Принадлежит: Individual

A method includes inductively coupling an electrical sensor to a transmission line associated with a node of an electrical network, and capturing power transmission information associated with the node through the electrical sensor. The method also includes communicating, through an electrical sensing device including the electrical sensor, information associated with a location of a power outage and/or a sub-optimal performance in the node to a processing node and/or a central control node associated with the electrical network.

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Номер записи: 4
13-12-2012 дата публикации

Device for removably fixing a conductor to a current transformer housing

Номер: US20120315778A1
Автор: Carsten Thörner, Christoph Leifer, Dat-Minh Trinh
Принадлежит: Phoenix Contact GmbH and Co KG

The invention relates to a device for removably fixing a conductor ( 10 ) to a current transformer housing ( 12 ), comprising a fixing element ( 16 ) which runs through a retaining element ( 14 ) lying on the current transformer housing ( 12 ) and which at least partly sits against the surface of the conductor ( 10 ) when the conductor ( 10 ) is fixed on the current transformer housing ( 12 ). According to the invention, the fixing element ( 16 ) is designed such that when the conductor ( 10 ) is brought from an unfixed state and fixed on the current transformer housing ( 12 ), the fixing element ( 16 ) carries out a translational movement within the retaining element ( 14 ) along the longitudinal axis ( 54 ) of said fixing element in the direction of the conductor ( 10 ) and subsequently a rotational movement about the longitudinal axis ( 54 ) of said fixing element.

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Номер записи: 5
27-12-2012 дата публикации

Looped fastening element for removably fixing a conductor to a current transformer housing

Номер: US20120326823A1
Автор: Carsten Thörner, Christoph Leifer, Dat-Minh Trinh
Принадлежит: Phoenix Contact GmbH and Co KG

The invention relates to a device for removably fixing a conductor ( 10 ) to a current transformer housing ( 12 ), comprising a fixing element ( 18 ) which runs through a retaining element ( 16 ) lying on the current transformer housing ( 12 ) and which sits at least partly against the surface of the conductor ( 10 ) when the conductor ( 10 ) is fixed on the current transformer housing ( 12 ). The invention is characterized in that the fixing element ( 18 ) runs around the circumferential surface of the conductor ( 10 ) in a looped manner when fixed.

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Номер записи: 6
28-02-2013 дата публикации

Electric storage apparatus, electronic device, electric vehicle, and electric power system

Номер: US20130049457A1
Автор: Hidekazu Kikuchi, Koji Umetsu, Yoshihiro Komatsu
Принадлежит: Sony Corp

A battery system includes a plurality of electronic storage modules serially connected together. Each electronic storage module includes a battery block group including a plurality of battery cells, and a different magnetic core connected to each battery block group.

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Номер записи: 7
14-03-2013 дата публикации

A system and method for measuring phase attributes of electrical grid system and equipment using a smart probe

Номер: US20130066576A1
Автор: Adishesha Cs, Arun Vijayakumari Mahasenan, Bhanumurthy Veeragandham
Принадлежит: Honeywell International Inc

A system for measuring phase attributes of high voltage electrical lines comprises a single high voltage probe. The probe comprises a sensing element for selectively measuring voltage of a high voltage electrical line. A processing circuit detects zero crossings of the measured voltage, applies a time tag to the zero crossings, and stores samples of the amplitude and time tagged zero crossings. A memory stores samples of the amplitude and time tagged zero crossings for a plurality of high voltage electrical lines. A processor is operatively associated with the memory for determining phase relationships between the plurality of high voltage electrical lines.

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Номер записи: 8
25-07-2013 дата публикации

Energy Harvest Split Core Design Elements for Ease of Installation, High Performance, and Long Term Reliability

Номер: US20130187636A1
Автор: David P. Knight, Dennis Saxby, Mark A. Parsons, Michael Kast
Принадлежит: Sentient Energy Inc

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. In some embodiments, the power line sensors can include a split-core transformer. In some embodiments, a power line sensing device is disposed on each conductor of a three-phase network. The sensing devices can be configured to measure and monitor, among other things, current and electric-field on the conductors. Methods of installing, sealing, and protecting the split-core transformers of the power line sensors are also discussed.

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Номер записи: 9
15-08-2013 дата публикации

COMBINATION CONVERTER ARRANGEMENT AND SWITCHING DEVICE

Номер: US20130207638A1
Автор: GROSS Markus, Kiendl Thomas
Принадлежит:

A combination converter arrangement and a switching device including such a combination converter arrangement are disclosed. The combination of a current transformer with a core made of ferromagnetic material and a Rogowski coil is referred to as a combination converter, the current transformer being used to supply energy to the electronic tripping unit of the switching device, and the Rogowski coil being used to measure current. In order to make use of the installation space available in the switching device for installing combination converters, a plurality of combination converters are arranged in a common housing to thereby provide a multi-pole combination converter module. 1. A combination converter arrangement , comprising:a plurality of combination converters arranged in a common housing, each combination converter including a Rogowski coil and a current transformer.2. The combination converter arrangement of claim 1 , wherein the Rogowski coil of each combination converter includes an annular wound plastic or ceramic core claim 1 , and wherein the current transformer of each combination converter includes an annular wound core made of a ferromagnetic material.3. The combination converter arrangement of claim 1 , wherein the housing includes claim 1 , for each phase claim 1 , a mounting element through which an electrical conductor associated with the respective phase runs and which is used as a carrier for the Rogowski coil and the current transformer of the combination converter associated with this phase.4. The combination converter arrangement of claim 3 , wherein the Rogowski coil is arranged on the mounting element in such a manner that it rests against the rear wall of the housing.5. The combination converter arrangement of claim 1 , wherein at least one ofa spacer is arranged between the Rogowski coil and the current transformer of each combination converter, anda spacer is arranged on at least one of an outer side of the Rogowski coil and the outer ...

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Номер записи: 10
31-10-2013 дата публикации

Current detection printed board, voltage detection printed board, current/voltage detection printed board, current/voltage detector, current detector and voltage detector

Номер: US20130285644A1
Автор: Hideo Ito, Shuji Omae, Yoshifumi Ibuki
Принадлежит: Daihen Corp

A current and voltage detection printed board includes a board formed with a penetration hole; a first pattern wire formed at a periphery of the penetration hole; a second pattern wire formed at the periphery of the penetration hole; a plurality of first through holes that penetrate the board between the first and second pattern wires; a third pattern wire formed at the periphery of the penetration hole; a fourth pattern wire formed at the periphery of the penetration hole; and a plurality of second through holes that penetrate the board between the third and fourth pattern wires.

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Номер записи: 11
31-10-2013 дата публикации

Apparatus and Methods Thereof for Power Consumption Measurement at Circuit Breaker Points

Номер: US20130285645A1
Автор: Adi Shamir, Dan Wijsboom, David Almagor
Принадлежит: Panoramic Power Ltd

Apparatus and methods are provided for the measurement of power consumption at points of interest, such as circuit breakers, machines, and the like. Accordingly, means are provided for measurement of power consumption for each electrical sub-network that is controlled by a circuit breaker. Each apparatus is enabled to communicate its respective data, in an environment of a plurality of such apparatuses, to a management unit which is enabled to provide finer granularity power consumption profiles. Challenges of measuring relatively low supply currents, wireless operation in an environment of a large number of apparatuses, and self-powering are addressed.

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Номер записи: 12
23-01-2014 дата публикации

High efficiency energy harvester and methods thereof

Номер: US20140021936A1
Автор: Dan Tho Lu, Ingrid Marie Gilstrap
Принадлежит: General Electric Co

In one embodiment, a current transducer is provided. The current transducer includes a magnetic core configured to at least partially encircle a magnetic flux generated by a conductor. At least one coil is coupled to the magnetic core and the magnetic core comprises a superm-alloy material.

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Номер записи: 13
30-01-2014 дата публикации

CURRENT TRANSFORMER

Номер: US20140028287A1
Автор: Brookes Matthew
Принадлежит:

A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labour costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed. 1. A current transformer , comprising:a housing having one or more apertures, each for receiving a primary cable or busbar;one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture;one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core;shunt circuitry enclosed within the housing and being connected across the secondary windings to generate a respective ...

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Номер записи: 14
10-04-2014 дата публикации

Current Transformer

Номер: US20140097924A1
Автор: Leifer Christoph, Thörner Carsten
Принадлежит: PHOENIX CONTACT GMBH & CO KG

A current measuring transducer for measuring the current flowing through an electrical cable, with a ring probe, a sensor and an evaluation device for recording the current value obtained by the ring probe and the sensor, wherein the ring probe has an annular core, wherein the ring probe is divided into a basic ring section and at least one movable ring section, wherein the movable ring section defines an open and a closed state, wherein in the open state, a radial cable insert opening is opened, and wherein a circularly closed arrangement is created in the closed state of the movable ring section in which the annular core surrounds the cable, wherein the radial insertion of a cable extending axially relative to the current measuring transducer into the inside area of the ring probe transfers the ring section from one to the other state, and measurement of the current in the cable inserted into the inside area is made possible in the closed state. 1. A current measuring transducer for measuring the current flowing through an electrical cable ,with a probe ring, a magnetoresistive sensor and an evaluation device for calculating the values obtained by the magnetoresistive sensor,wherein the ring probe contains an annular core,wherein the ring probe is divided into a basic ring section and at least one movable ring section,wherein the movable ring section defines an open and closed state, where in the open state a radial cable insert opening is opened, and where in the closed state of the movable ring section a circularly closed arrangement is created in which the annular core surrounds the cable,wherein radial insertion of the cable extending axially to the current measuring transducer into the inside area of the ring probe transfers the movable ring section from one state to the other and, in the closed state, measurement of the current in the cable inserted into the inside area is made possible.2. The current measuring transducer of claim 1 ,wherein the current ...

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Номер записи: 15
14-01-2016 дата публикации

METHOD OF INTERFACING AN LC SENSOR AND RELATED SYSTEM

Номер: US20160011235A1
Автор: CONDORELLI Riccardo, MANGANO Daniele
Принадлежит:

A method of interfacing an LC sensor with a control unit is described. The control unit may include first and second contacts, and the LC sensor may be connected between the first and second contacts. The method may include starting the oscillation of the LC sensor, and monitoring the voltage at the second contact, in which the voltage at the second contact corresponds to the sum of the voltage at the first contact and the voltage at the LC sensor. The voltage at the first contact may be varied such that the voltage at the second contact does not exceed an upper voltage threshold and does not fall below a lower voltage threshold. 114-. (canceled)15. A method of interfacing an LC sensor with a controller , the controller comprising first and second contacts , and the LC sensor being coupled between the first and second contacts , the method comprising:starting an oscillation of the LC sensor;monitoring a voltage at the second contact, the voltage at the second contact corresponding to a sum of a voltage at the first contact and a voltage associated with the LC sensor; andvarying the voltage at the first contact so that the voltage at the second contact does not exceed an upper voltage threshold and does not fall below a lower voltage threshold.16. The method of wherein varying the voltage at the first contact comprises generating a counter-oscillation at the first contact claim 15 , the counter-oscillation being phase-shifted with respect to the oscillation of the LC sensor.17. The method of wherein varying the voltage at the first contact comprises:when the voltage at the second contact reaches the upper voltage threshold, decreasing the voltage at the first contact; andwhen the voltage at the second contact reaches the lower voltage threshold, increasing the voltage at the first contact.18. The method of wherein the controller comprises a clamping circuit defining the upper voltage threshold and the lower voltage threshold.19. The method of wherein the clamping ...

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Номер записи: 16
19-01-2017 дата публикации

Electrical Sensor

Номер: US20170016936A1
Автор: Neville Kyme, Rutton Homi Patel
Принадлежит: REPL INTERNATIONAL Ltd

Power distribution networks increasingly need to monitor the electrical power at points distributed around the network in order to cope with feed-in tariffs, etc. A unit which senses the electrical characteristics of the network can also be used to sense other environmental characteristics of the electrical network at that location. We describe an electrical sensor unit ( 50 ) attachable to an insulated electrical distribution cable ( 88 ) and comprising at least one electrical sensor for at least one of current, voltage, and phase angle of electrical power being transmitted in the cable ( 88 ), a source of electrical power for driving the electrical sensors, and a socket for receiving an environmental sensor and comprising connections for the source of electrical power. This means that the unit can be deployed as a standard item at a cost comparable with a simple electrical sensor, and then if and when environmental sensing is desired at the location in question, then an environmental sensor can be added via the socket in order to upgrade that particular location. It is convenient for the unit to comprise an annular body defining an axial passage through which an electrical conductor ( 90 ) can pass, the annular body housing an electrical sensor in the form of a current sensor including a loop extending around the axial passage. This provides a convenient form for the unit which allows it to be fitted in place over an existing cable ( 88 ) without severing the cable. The environmental sensor can sense at least one of temperature, partial discharge, humidity, atmospheric pressure. Thus, the socket can be fitted a sensor apt to detect any or some of these, or a battery, or a blanking plug ( 80 ), for example if neither a battery nor a sensor is needed at that time.

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Номер записи: 17
18-01-2018 дата публикации

NON-CONTACT VOLTAGE MEASUREMENT DEVICE

Номер: US20180017598A1
Автор: HEBIGUCHI Hiroyuki
Принадлежит:

In a non-contact voltage measurement device that can precisely measure an alternating-current voltage with a simple structure, a first capacitor and second capacitor, having mutually correlated capacitances, are respectively formed between a first electrode and a conductor and between a second electrode and the conductor. An alternating-current signal is given between the first electrode and a first reference potential. When a switch is off, a first charge detecting signal matching charges accumulated in the second capacitor by the alternating-current signal is created with the second electrode kept at the first reference potential. When the switch is on, a second charge detecting signal matching charges accumulated in the second capacitor by the alternating-current voltage is created with the second electrode kept at a second reference potential. A measurement of the alternating-current voltage is calculated in a calculating unit, according to the first charge detecting signal and second charge detecting signal. 1. A non-contact voltage measurement device that measures an alternating-current voltage applied to a conductor , without continuity to the conductor , the device comprising:a first electrode that forms a first capacitor between the first electrode and the conductor;a second electrode that forms a second capacitor between the second electrode and the conductor, the second capacitor having a capacitance correlating with a capacitance of the first capacitor;an alternating-current signal source that gives an alternating-current signal between the first electrode and a first reference potential;a charge detecting unit that maintains the second electrode at a certain potential with respect to the first reference potential, and creates a charge detecting signal matching a charge accumulated in the second capacitor;a switch disposed between the first reference potential and a second reference potential used as a reference in measurement of the alternating-current ...

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Номер записи: 18
18-01-2018 дата публикации

Current detection element, transmission device, and electric power transmission system

Номер: US20180017599A1
Автор: Keiichi Ichikawa
Принадлежит: Murata Manufacturing Co Ltd

A current detection element includes a laminate where multiple insulator layers are laminated, a main line conductor formed in the laminate, extending in one direction, a coil-shaped current detection conductor that is formed in the laminate and that is magnetically coupled with the main line conductor, and electrostatic shielding conductors that are formed in the laminate, and that are grounded. The electrostatic shielding conductors overlap at least one of the main line conductor and the current detection conductor in plan view from a winding axis direction along a winding axis of the current detection conductor. Accordingly, a current detection element that accurately detects high-frequency AC current flowing through a line, and a transmission device and electric power transmission system having the same, are provided.

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Номер записи: 19
18-01-2018 дата публикации

In-Situ Wound Current Transformer Core

Номер: US20180019057A1
Автор: Mass James A., Yogeeswaran Karthik
Принадлежит: GOOGLE INC.

A current transformer includes first and second bobbins, and a secondary winding. The first bobbin includes a first tube defining a first longitudinal axis. First and second flanges are disposed on first and second ends of the first tube. The first tube, the first and second flanges collectively define a first slit along the first longitudinal axis. The first slit allows receipt of a primary conductor into the first tube. The second bobbin includes a second tube rotatably received about the first tube. The second tube defines a second slit along the second longitudinal axis. The second slit allows receipt of the primary conductor into the first and second tubes. The secondary winding is wound about the first bobbin and extends along the first longitudinal axis, passing through the first tube and over the first and second flanges. The second tube rotates about the second longitudinal axis relative to the first tube. 1. A current transformer comprising: a first tube having first and second ends and defining a first longitudinal axis;', 'a first flange disposed on the first end of the first tube; and', 'a second flange disposed on the second end of the first tube,', 'wherein the first tube, the first flange, and the second flange collectively define a first slit along the first longitudinal axis, the first slit configured to allow receipt of a primary conductor into the first tube;, 'a first bobbin comprising a second longitudinal axis substantially coincident with the first longitudinal axis; and', 'a second slit along the second longitudinal axis, the second slit configured to allow receipt of the primary conductor into the first tube and the second tube, and, 'a second tube rotatably received about the first tube, the second tube defining, 'a second bobbin comprisinga secondary winding wound about the first bobbin, the secondary winding extending along the first longitudinal axis, passing through the first tube and over the first and second flanges,wherein the ...

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Номер записи: 20
21-01-2021 дата публикации

CONSTRUCTIVE SYSTEM REGARDING A CAPACITIVE SENSOR

Номер: US20210018537A1
Автор: Bauer Alberto
Принадлежит:

A capacitive voltage sensor assembly includes a first electrode extending along a longitudinal axis, the first electrode including a first end and a second end opposite the first end, a second electrode surrounding the second end of the first electrode, the second electrode including a tubular portion having a first end and a second end opposite the first end, and a base portion coupled to the first end of the tubular portion, and a mass of dielectric insulating material at least partially encapsulating the first electrode and the second electrode. The tubular portion includes a plurality of cantilevered tabs interconnected at the first end of the second electrode. Each tab of the plurality of cantilevered tabs is circumferentially separated from an adjacent tab of the plurality of cantilevered tabs to define a gap therebetween at the second end of the second electrode. 1. A capacitive voltage sensor assembly comprising:a first electrode extending along a longitudinal axis, the first electrode including a first end and a second end opposite the first end; a tubular portion having a first end and a second end opposite the first end, and', 'a base portion coupled to the first end of the tubular portion; and, 'a second electrode surrounding the second end of the first electrode, the second electrode including'}a mass of dielectric insulating material at least partially encapsulating the first electrode and the second electrode,wherein the tubular portion includes a plurality of cantilevered tabs interconnected at the first end of the second electrode, each tab of the plurality of cantilevered tabs circumferentially separated from an adjacent tab of the plurality of cantilevered tabs to define a gap therebetween at the second end of the second electrode.2. The capacitive voltage sensor assembly of claim 1 , wherein the tubular portion includes an insulating layer claim 1 , an inner conductive layer disposed on an inner side of the insulating layer claim 1 , and an outer ...

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Номер записи: 21
21-01-2021 дата публикации

CURRENT DETECTION DEVICE

Номер: US20210018539A1
Автор: MIYAZAKI Hiroyuki
Принадлежит:

A current detection device is configured by a current path through which a first current flows, a current path through which a second current flows, a switching element that switches the current paths and allows the first current and the second current to flow alternately, a common coil section through which an induction current flows by the first current and the second current, and a turn current path that alternates a first induction current flowing through the coil section by the first current and a second induction current flowing through the coil section by the second current. 1. A current detection device comprising:a first current path through which a first current flows and a second current path through which a second current flows;a switching element that switches between the first current path and the second current path and allows the first current and the second current to flow alternately;a common coil section through which an induction current flows by the first current and the second current; anda current alternation unit that alternates the induction current flowing through the coil section by the first current and the induction current flowing through the coil section by the second current.2. The current detection device according to claim 1 ,wherein the coil section includes a first coil and a second coil, andthe first coil and the second coil are bifilar-wound around one core.3. The current detection device according to claim 1 ,wherein the switching element includes a first transistor pair including two transistor elements that allow the first current to flow through the first current path, and a second transistor pair including two transistor elements that allow the second current to flow through the second current path, andthe coil section generates an induction current by a current flowing between the two transistor elements included in the first transistor pair or between the two transistor elements included in the second transistor pair.4. ...

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Номер записи: 22
25-01-2018 дата публикации

MEDIUM-VOLTAGE OR HIGH-VOLTAGE COUPLING

Номер: US20180024168A1
Автор: Hetzler Ullrich, MARIEN Jan, WASSMANN ALEXANDER, WENDT ECKHARD
Принадлежит: ISABELLENHÜTTE HEUSLER GMBH & CO. KG

The invention relates to a coupling for electrically and mechanically connecting medium-voltage or high-voltage components, in particular for voltages of 1 kV to 52 kV, comprising 115-. (canceled)16. A coupling for electrically and mechanically connecting medium-voltage or high-voltage components comprisinga first connecting piece for mechanically and electrically connecting a medium-voltage or high-voltage component,a second connecting piece for mechanically and electrically connecting another medium-voltage or high-voltage component,wherein the two connecting pieces of the coupling belong to complementary connection types, which fit together mechanically, andfurther comprising a low-resistance current sensing resistor, which is built into the coupling and electrically connected between the first connecting piece and the second connecting piece in order to measure a current flow between the first connecting piece and the second connecting piece.17. The coupling according to claim 16 , whereinthe first connecting piece is adapted for mechanically and electrically connecting to a complementary connecting piece of a bushing of a switchgear cabinet, andthe second connecting piece is adapted for mechanically and electrically connecting to a complementary connecting piece of an electrical cable.18. The coupling as claimed in claim 16 , further comprising a measuring device built into the coupling for the purpose of measuring the voltage across the current sensing resistor.19. The coupling according to claim 18 , wherein the measuring device is adapted for measuring the voltage at the current sensing resistor with respect to a ground potential.20. The coupling as claimed in claim 17 , wherein the measuring device measures at least one of the voltage across the current sensing resistor and the voltage at the current sensing resistor at a defined sampling rate claim 17 , and the sampling rate equals at least 100 Hz in order to be able to measure also harmonic components of ...

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Номер записи: 23
10-02-2022 дата публикации

Current transformer of air circuit breaker

Номер: US20220044869A1
Автор: Han-Baek CHUNG
Принадлежит: LS Electric Co Ltd

A current transformer according to the present invention may comprise a magnetic core, a secondary coil, and a magnetic flux compensation member. A main circuit of an air circuit breaker penetrates the magnetic core. In addition, the secondary coil is arranged to be adjacent to the magnetic core, and a secondary current is induced through a current flowing in the main circuit. In addition, the secondary coil supplies the induced secondary current to a relay. The magnetic flux compensation member may be coupled to the magnetic core so as to correct magnetic flux of the secondary coil.

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Номер записи: 24
28-01-2021 дата публикации

PREDICTIVE SYNCHRONOUS RECTIFIER SENSING AND CONTROL

Номер: US20210028712A1
Автор: Bhardwaj Manish, Yu Sheng-Yang
Принадлежит:

For predictive synchronous rectifier sensing and control, an example apparatus includes an air core toroid having a voltage output, the air core toroid adapted to surround a portion of a current path and adapted to be coupled through the current path to a transformer, and a control logic circuit having a voltage input and a control output, the voltage input coupled to the voltage output, and the control output adapted to be coupled to a switch. 1. An apparatus comprising:an air core toroid having a voltage output, the air core toroid adapted to surround a portion of a current path and adapted to be coupled through the current path to a transformer; anda control logic circuit having a voltage input and a control output, the voltage input coupled to the voltage output, and the control output adapted to be coupled to a switch.2. The apparatus of claim 1 , wherein the air core toroid is a Rogowski coil claim 1 , and the control logic circuit includes:an integrator circuit coupled to the voltage output;a gain amplifier circuit coupled to the integrator circuit;a slope detection logic circuit coupled to the gain amplifier circuit; anda switch control logic circuit coupled to: the integrator circuit, the gain amplifier circuit, the slope detection logic circuit, and adapted to be coupled to the switch.3. The apparatus of claim 2 , wherein:the integrator circuit has a first input, a second input, a first output, and a second output, the first input and the second input coupled to the voltage output; andthe gain amplifier circuit has a third input and a fourth input, the third input coupled to the first input and the fourth input coupled to the second input.4. The apparatus of claim 2 , wherein:the gain amplifier circuit has a first output and a second output;the switch control logic circuit has a first input, a second input, a third input, a third output, a fourth output, and a fifth output, the first input coupled to the first output, the second input coupled to the second ...

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Номер записи: 25
02-02-2017 дата публикации

VOLTAGE SENSOR

Номер: US20170030946A1
Автор: Busemann Friedrich A., Eggert Sebastian, Ghosh Dipankar, Gravermann Mark, Kang Myungchan, Lohmeier Gerhard, Petry Michael, Reeken Rainer, Roehling Werner, Sabo Andreea, Schubert Bernd, Sebesta Christopher D., Stalder Michael H., Weichold Jens, Weinmann Christian
Принадлежит:

Voltage sensor () for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy. 1. Voltage sensing device for a high-voltage or medium-voltage power-carrying conductor for a power network , such as an inner conductor of a power cable or a cable connector or a bus bar , the voltage sensing device having a tubular shape and an axial passageway defining axial and radial directions , which passageway can receive the power-carrying conductor ,the voltage sensing device comprisinga) a radially-inner electrode, operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor,b) a radially-outer electrode, operable as a second sensing electrode of the sensing capacitor,c) a solid carrier element, at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor.2. Voltage sensing device according to claim 1 , wherein the passageway defines a central axis claim 1 , and wherein the greatest radial distance of the outer electrode from the central axis at any axial location is less than 50 millimeters.3. Voltage sensing ...

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Номер записи: 26
01-02-2018 дата публикации

DYNAMIC REAL TIME TRANSMISSION LINE MONITOR AND METHOD OF MONITORING A TRANSMISSION LINE USING THE SAME

Номер: US20180031611A1
Автор: LINDSEY Keith E., SPILLANE Philip E., WANG An-Chyun
Принадлежит:

A dynamic real time transmission line monitor, a dynamic real time transmission line monitoring system, and a method of dynamic real time transmission line monitoring. A dynamic real time transmission line monitor includes a housing installable on a transmission line, the housing including a base portion, and a cover portion coupled to the base portion and defining a cavity of the housing together with the base portion; a sensor configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object; and an antenna in the cavity of the housing and configured to transmit a signal including information sensed by the sensor away from the monitor in real time. 1. A dynamic real time transmission line monitor comprising: a base portion; and', 'a cover portion made from a semiconductive material and coupled to the base portion and defining a cavity of the housing together with the base portion, at least one of the cover portion or the base portion being movable relative to the other between an open position of the housing in which a length of the transmission line is receivable in the cavity, and a closed position of the housing in which the length of the transmission line is retained in the cavity;, 'a housing installable on a transmission line, the housing comprisinga sensor supported by the housing and configured to sense in real time at least one of a temperature, a position, a current, an acceleration, a vibration, a tilt, a roll, or a distance to a nearest object; andan antenna in the cavity of the housing, the antenna configured to transmit a signal including information sensed by the sensor away from the monitor in real time.2. The dynamic real time transmission line monitor of claim 1 , further comprising a first alignment portion claim 1 , and a second alignment portion corresponding to the first alignment portion and configured to engage the first alignment portion ...

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Номер записи: 27
31-01-2019 дата публикации

A CURRENT MEASURING DEVICE PROTECTED AGAINST ELECTRICAL SURGES WHEN OPENING THE CIRCUIT

Номер: US20190033345A1
Автор: HENRARD Pierre Henri
Принадлежит: SAFRAN ELECTRICAL & POWER

A current measuring device is protected against electrical surges in the event of the device being open circuit. The device includes a first current transformer, a first connection terminal having connected thereto a first terminal of the first current transformer, a second connection terminal having connected thereto a second terminal of the first current transformer, a protective resistance having a first terminal connected to the second connection terminal, and a load resistance connected between the first and second connection terminals across the terminals of which a voltage is measured from which the current flowing in a circuit passing through the first current transformer is determined. The device also includes a second current transformer connected to the terminals of the protective resistance, and current branch connection structure connected between the first connection terminal and a second terminal of the protective resistance. 1. A current measuring device that is protected against electrical surges when opening the electric circuit of said device , said device comprising:a first current transformer,a first connection terminal having connected thereto a first terminal of said first current transformer,a second connection terminal having connected thereto a second terminal of said first current transformer distinct from said first terminal of said first current transformer,a protective resistance having a first terminal connected to said second connection terminal,a load resistance connected between said first and second connection terminals across the terminals of which a voltage is measured from which the current flowing in a circuit passing through said first current transformer is determined,a second current transformer connected to said first and second terminals of the protective resistance, andcurrent branch connection means connected between said first connection terminal and said second terminal of said protective resistance.2. The device ...

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Номер записи: 28
31-01-2019 дата публикации

DIFFERENTIAL ELECTRICAL PROTECTION DEVICE

Номер: US20190035590A1
Автор: Hashimoto Takashi, Hosooka Yohei, Nereau Jean-Pierre, SATO Yutaka
Принадлежит:

A differential electrical protection device D including N-1 phase conductors, each phase conductor including, between an input, or upper, connection land and an output, or lower, connection land, a portion able to pass through a torus and a portion able to pass through a current measurement and supply sensor, the input connection lands being situated in a first plane P, and the output connection lands extending in a second plane P, in that the supply and measurement sensors of the N−1 phase conductors are each positioned in the space situated between the two planes P,P, and wherein it includes an additional phase conductor including an input connection land and an output connection land, a portion able to pass through the torus and a portion able to pass through an additional measurement sensor only measuring the current, this additional measurement sensor being of small size and being positioned directly above the torus in such a way that the assembly formed by the torus and the additional sensor is situated substantially in the space between the two planes P,P 1. A differential electrical protection device intended to protect at least N electrical lines and including a switching device and a trip module intended to be connected to the switching device , said trip module including firstly a device for measuring the differential current in at least two current lines , this device for measuring the differential current including a magnetic circuit including a torus intended to surround primary conductors that are respectively associated with the current lines , and secondly current measurement and power supply sensors for each current line , respectively , said switching device including power supply means and processing means connected electrically upstream to the device for measuring the differential current and to the various current measurement and power supply sensors , and downstream to a device for actuating a mechanism for opening the contacts ,{'b': 1', '2', ...

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Номер записи: 29
11-02-2016 дата публикации

High Voltage Sensor Located Within Line Insulator

Номер: US20160041203A1
Автор: Rostron Joseph R.
Принадлежит:

A high voltage sensor is located within a dielectric canister inside a high voltage power line support insulator. A space through the voltage sensor accommodates a mechanical connecting rod associated with a circuit interrupter switch located in another section of the support insulator. An electrically floating dumbbell-shaped sensor extending between and capacitively coupled to high voltage and low voltage shields assumes a midpoint voltage value between the shields. A sensor plate or other suitable pickup capacitively coupled to the dumbbell sensor provides a voltage measurement, which is calibrated to provide a measurement of the power line voltage. This solution allows a voltage sensor to be added to or integrated in conventionally sized power line support insulators with no additional size, negligible additional weight, and minimal additional cost. 1. A voltage monitor for an electric power line configured for positioning within a dielectric canister within a high voltage insulator supporting the electric power line , comprising:a high voltage shield electrically configured for electrical connection to the electric power line;a low voltage shield electrically configured for electrical connection to electric ground;wherein the high voltage shield and the low voltage shield have end within the canister spaced apart by a sufficient distance to prevent voltage breakdown between the shields; an upper bell positioned adjacent to and spaced apart from the high voltage shield a sufficient distance to prevent voltage breakdown while capacitively coupling the upper bell to the high voltage shield,', 'a lower bell positioned adjacent to and spaced apart from the low voltage shield a sufficient distance to prevent voltage breakdown while capacitively coupling the lower bell to the low voltage shield, and', 'a sensor tube or rod physically and electrically connecting the upper bell with the lower bell;, 'a dumbbell-shaped floating electric sensor configured for suspension ...

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Номер записи: 30
08-02-2018 дата публикации

ELECTRICAL SAFETY CONTROL DEVICE

Номер: US20180041023A1
Автор: Farfan Jesus Juvenal, Farfan Leonel Wilfrido
Принадлежит:

In order to heighten the level of electrical safety in residential, commercial and industrial networks, stay alert electronic control equipment are needed to detect and report the more common failures in the function of the electric circuitry: high and low line voltage, inversion of the phase sequence in three-phase networks, abnormal current flow between neutral and the ground conductor, and unplanned neutral interruption. When such failures suddenly come about, its effects can provoke harsh damages to users. 1. An electrical safety device for Wye three phase systems , which continuously measure the powerline phase voltages , the phase sequence condition , and ground current in order to protect against neutral conductor interruption , high or low voltage failures , phase sequence mistakes and ground.2. An electrical safety control device of claim 1 , wherein an very unbalanced input impedance wye delta rectifier a voltage regulator and neutral conductor interruption sensor that works as follows when wye system claim 1 , LLLN claim 1 , with its rightly bonded neutral conductor; in this case claim 1 , the unbalanced phase voltage is zero and the voltage measured between the common conductor of the network and each line is the same. When the neutral is suddenly interrupted claim 1 , the phase voltage becomes abnormally high in a particular line whereas at the same time claim 1 , in other line the voltage results abnormally low. This facts mean that the voltage measured between a line and the its neutral is too high and claim 1 , simultaneously claim 1 , the voltage measured between another line and its neutral is too low. This sensor also is applicable in any kind of two phase system.3. An electrical safety control device of claim 2 , where in a three phase neutral sensor based on three very different input impedances connected claim 2 , through voltage dividers and rectifiers claim 2 , to three analog to digital converters to measure continuously the phase voltage of ...

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Номер записи: 31
16-02-2017 дата публикации

Docking Module for a Current Transformer for Preventing Overvoltages and a Current Transformer Having a Docking Module

Номер: US20170047734A1
Автор: Jankowski Martin
Принадлежит:

The invention relates to a docking module () for a current transformer () comprising: 1. A docking module for a current transformer , comprising:an electronic circuit; andat least one electric connecting element for electrically coupling the circuit to the current transformer and for docking the docking module onto the current transformer.2. The docking module as claimed in claim 1 , exhibiting at least one of the following features:the circuit is a protective circuit for preventing a secondary voltage on a secondary circuit of the current transformer from exceeding a secondary voltage threshold; orthe circuit is mounted on a circuit board.3. The docking module as claimed in claim 2 , exhibiting at least one of the following features:the docking module comprises a housing in which the circuit is accommodated; orlocking elements of the housing are adapted to cooperate with locking elements of the circuit board to define a locking mechanism for securing the circuit board to the housing.4. The docking module as claimed in claim 2 , exhibiting at least one of the following features:the connecting element can be pressed against the current transformer by a clamping element that establishes electrical contact to the current transformerthe docking module comprises two connecting elements.5. The docking module as claimed in claim 3 , exhibiting at least one of the following features:the connecting element protrudes from the docking module;the connecting element is in form of a tongue-shaped tab protruding from the housing or the docking module;the tab is formed as a tongue-shaped projection of the circuit board;the tab is coated with an electrically conductive material on one or both faces thereof; orthe tab is coated with a metal.6. The docking module as claimed in claim 2 , wherein the protective circuit comprises:a protective circuit input which can be coupled to the secondary circuit of the current transformer such that the secondary voltage is applied to the protective ...

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Номер записи: 32
22-02-2018 дата публикации

NON-CONTACT MAGNETOSTRICTIVE SENSORS AND METHODS OF OPERATION OF SUCH SENSORS

Номер: US20180052065A1
Автор: Lynass Mark Ronald, Samper Victor Donald, Sipilä Pekka Tapani, Zhou Ronghui
Принадлежит:

A sensor for sensing stress in a ferromagnetic material includes a non-magnetic substrate. The substrate has a first surface and a second surface opposite the first surface. A first coil is attached to or formed on the first surface of the substrate. The first coil is configured to induce a magnetic flux in the ferromagnetic material being driven by an alternating current (AC) signal. At least one second coil is attached to or formed on the first surface of the substrate. The at least one second coil is spaced from the first coil. In addition, the second coil is configured to detect changes in the magnetic flux induced in the ferromagnetic material. 1. A sensor for sensing stress in a ferromagnetic material , said sensor comprising:a non-magnetic substrate comprising a first surface and a second surface opposite said first surface;a first coil coupled to said first surface, said first coil configured to induce a magnetic flux in the ferromagnetic material, wherein said first coil is configured to be driven by an alternating current (AC) signal; andat least one second coil coupled to said first surface, said at least one second coil spaced from said first coil, said at least one second coil configured to detect changes in the magnetic flux induced in the ferromagnetic material.2. The sensor in accordance with further comprising a core coupled to said second surface of said non-magnetic substrate.3. The sensor in accordance with further comprising a shielding material coupled to said first surface and extending about a periphery of said first coil and said at least one second coil.4. The sensor in accordance with further comprising a core coupled to said second surface claim 3 , wherein said shielding material is further coupled to said core and extends about a periphery of said core and a surface of said core opposite said substrate claim 3 , wherein said core is substantially covered by said shielding material.5. The sensor in accordance with further comprising:a ...

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Номер записи: 33
13-02-2020 дата публикации

Current Transformer with Current Branches on Primary Conductor

Номер: US20200051738A1
Автор: Parikh Chetas, Shah Chirag
Принадлежит:

Embodiments described herein comprise a current transformer having a primary winding with multiple primary parallel branches that divide the primary current, and a secondary winding which is placed in any one, or more, branches. The current thus divided in the primary branches produces an alternating magnetic flux which induces alternating current in the secondary winding for an end user application. The invention disclosed herein reduces the weight and size of the current transformer drastically compared to the existing conventional current transformers. 1. A current transformer , comprising:a magnetic core;a primary winding configured to carry a primary current wherein the primary winding comprises at least a First group of primary winding branches and a second group of primary winding branches connected in parallel;one or more secondary windings wound around the core, and magnetically coupled to at least one of the primary winding branches, each secondary winding having a plurality of turns configured to induce a secondary current from at least one of the one or more of the primary winding branches; andan end user coupled to the secondary winding.2. The current transformer of claim 1 , wherein the first group of primary winding branches is wound around the magnetic core claim 1 , and the second group of primary winding branches is not wound around any magnetic core.3. The current transformer of claim 2 , wherein there is at least one secondary winding inducing the secondary current from one of die primary winding branches.4. The current transformer of claim 3 , wherein there is at least one secondary winding inducing the secondary current from one of the primary winding branches in the second group of primary winding branches.5. The current transformer of claim 3 , wherein the primary current is divided between the primary winding branches based on the impedance.9. The current transformer of claim 4 , wherein the current in at least one secondary winding is ...

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Номер записи: 34
01-03-2018 дата публикации

ELECTRO-OPTIC CURRENT SENSOR WITH HIGH DYNAMIC RANGE AND ACCURACY

Номер: US20180059144A1
Автор: Davis Philip B., Fiorille Anthony, Konetski Theodore C., Laratta William, LI Ye, Oshetski Michael, Pradhan Atul
Принадлежит: GRIDVIEW OPTICAL SOLUTIONS, LLC.

An optical sensor assembly that senses current in a secondary electrical cable while sensing voltage in a primary electrical cable. The optical sensor assembly may include a sensor body, a concentrator core for measuring current. The concentrator core may be attached to a first end of the sensor body. The optical sensor assembly may include a plurality of extension arms that extend from the sensor body. The extension arms may include clamping devices on one end that are configured to attach to a first electrical cable. The concentrator core may be configured to at least partially surround a second electrical cable and sense the current from that second electrical cable. 1. An optical sensor assembly for measuring electrical current in a current carrying cable , comprising:a sensor body having a first end and a second end;a concentrator core for measuring current, the concentrator core attached to the first end of the sensor body;a plurality of extension arms extending from the first end of the sensor body;a plurality of clamping devices, each of the plurality of clamping devices configured to attach to a top end of one of the plurality of extension arms; andat least one alignment loop attached to each of the plurality of extension arms;wherein the clamping devices are configured to engage with a first electrical cable;wherein the at least one alignment loop is configured to engage with a second electrical cable, andwherein the core concentrator at least partially surrounds the second electrical cable and measures the electrical current in the second electrical cable.2. The optical sensor assembly of claim 1 , further comprising:a plurality of flange plates, wherein each of the plurality of flange plates is connected to the first end of the sensor body and a bottom end of one of the plurality of extension arms.3. The optical sensor assembly of claim 1 , wherein at least one of the plurality of extension arms is made from a non-conductive material.4. The optical ...

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Номер записи: 35
02-03-2017 дата публикации

NON-CONTACT VOLTAGE MEASUREMENT DEVICE

Номер: US20170059619A1
Автор: Imai Hiroshi, MATSUURA Keiki, OGIMOTO Mao, Tokusaki Hiroyuki
Принадлежит: Omron Corporation

There is provided a non-contact voltage measurement device which can precisely measure a measurement target voltage by suppressing a flow of a leakage current via a parasitic capacitance produced between an electric field shield and an electric circuit. A drive voltage applying unit applies a voltage generated from an output voltage of a low impedance unit of the electric circuit and equal to an input voltage of a high impedance unit, to a first electric field shield coated on the high impedance unit. 1. A non-contact voltage measurement device configured to , when placing a probe close to and in non-contact with a conductive wire to produce a coupling capacitance between the probe and the conductive wire , measure a measurement target voltage applied to the conductive wire based on a voltage signal input to an electric circuit via the probe , whereinthe electric circuit includes a first impedance unit and a second impedance unit of different impedance values,the first impedance unit in the electric circuit is arranged at a position closer to the probe than the second impedance unit is, andthe non-contact voltage measurement device comprises:a first electric field shield configured to block an electric field entering the first impedance unit by coating at least part of the first impedance unit; anda voltage signal applying unit configured to generate an equivoltage signal equal to a voltage signal of the first impedance unit from a voltage signal of the second impedance unit, and configured to apply the generated equivoltage signal to the first electric field shield.2. The non-contact voltage measurement device according to claim 1 , further comprising a voltage lead-out unit configured to lead out the measurement target voltage based on a detection point voltage signal detected at a detection point set in the second impedance unit claim 1 ,wherein the voltage signal applying unit obtains the detection point voltage signal as the voltage signal of the second ...

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Номер записи: 36
04-03-2021 дата публикации

OPENABLE CURRENT TRANSFORMER COMPRISING A FLEXIBLE MAGNETIC CORE

Номер: US20210065971A1
Автор: BEGOTTO Vincent, GAUTARD Dominique, SAVE Thierry
Принадлежит:

An openable toroidal current transformer is intended to close over at least one electrical conductor in which an electrical current to be measured circulates. The current transformer includes a magnetic circuit, and an electrically conducting coil wound around the magnetic circuit and electrically insulated from the magnetic circuit. The coil comprises a single winding or several distinct windings coupled in series. The magnetic circuit comprises a set of wires of magnetic material assembled in the form of a strand, allowing having uniform flexibility in all directions for the magnetic circuit. 112.-. (canceled)13. An openable current transformer intended to close over at least one electrical conductor in which circulates an electrical current to be measured , the current transformer including a magnetic circuit and an electrically conducting coil wound around the magnetic circuit and electrically insulated from the magnetic circuit , said coil comprising a single winding or several distinct windings coupled in series ,wherein said magnetic circuit comprises a set of wires of magnetic material, the wires being twisted together in the form of a strand to form a cable having uniform flexibility in all directions for the magnetic circuit.14. The current transformer according to claim 13 , wherein the magnetic material of the wires is an iron-nickel alloy with high magnetic permeability with at least 70% nickel.15. The current transformer according to claim 13 , wherein the wires are geometrically and electrically insulated from one another by magnesium methylate claim 13 , or by alumina or magnesia powder during their assembly to avoid adhesions between the wires.16. The current transformer according to claim 13 , wherein each wire comprises a plurality of threads of magnetic material twisted together in the form of a strand.17. The current transformer according to claim 16 , wherein the threads of each wire are geometrically and electrically insulated from one another ...

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Номер записи: 37
04-03-2021 дата публикации

SWITCHBOARD USING BUSHING TYPE CURRENT TRANSFORMER APPLIED THERETO

Номер: US20210065972A1
Автор: MA Ji-Hoon
Принадлежит:

The present invention relates to a switchboard using a bushing type current transformer applied thereto. The switchboard using a bushing type current transformer applied thereto, according to an embodiment of the present invention, may comprise: a terminal bushing; a switchboard terminal coupled to the terminal bushing; a metering transformer bushing which is installed or released from the front part thereof through a breaker chamber, covers the switchboard terminal, and is inserted into the terminal bushing; and a metering transformer which is fastened to the metering transformer bushing and disposed on the outer circumference of the metering transformer bushing. The metering transformer includes at least one terminal that faces forward, and the metering transformer bushing may include an opening for exposing the at least one terminal to the front thereof. 1. A switchboard having a bushing-coupled current transformer , the switchboard comprising:a switchboard terminal;a current transformer bushing mounted to or removed from the switchboard through a circuit breaker compartment in a direction from a front face of the switchboard terminal to a rear face thereof, wherein the current transformer bushing surrounds the switchboard terminal; anda current transformer coupled to the current transformer bushing, wherein the current transformer surrounds an outer circumference face of the current transformer bushing,wherein the current transformer has at least one terminal facing in a front direction,wherein the current transformer bushing has an opening exposing the at least one terminal in the front direction.2. The switchboard of claim 1 , wherein the current transformer bushing includes:a bushing head;a bushing wing located in rear of the bushing head and having the opening defined therein; anda bushing body extending rearwards from the bushing wing.3. The switchboard of claim 2 , wherein the opening faces a top or bottom face of the bushing head.4. The switchboard of ...

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Номер записи: 38
10-03-2016 дата публикации

POWER METER WITH AUTOMATIC CONFIGURATION

Номер: US20160069933A1
Автор: Bitsch Michael, Cook Martin
Принадлежит:

A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit. 1. A system comprising:(a) an elongate support board(b) said elongate board electrically interconnected to at least four current sensors;(c) each of said current sensors spaced apart along a length of said elongate support board suitable that wires from respective circuit breakers pass through a respective said current sensor;(d) a set of electrical traces are supported by said elongate support board and electrically interconnected to a respective said current sensors;(e) a connector supported by said elongate support board that receives signals based upon signals from said at least four current sensors;(f) each of said four current sensors is a split core current sensor that is suitable to be opened with a respective said conductor to be inserted therein and suitable to be closed with said respective said conductor maintained therein;(g) each of said four current sensors interconnected with a respective flexible wire to said elongate support board.2. The system of wherein said elongate support board extends along a length of said circuit breakers. This application is a continuation of U.S. patent application Ser. No. 14/050,496, filed Oct. 10, ...

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Номер записи: 39
10-03-2016 дата публикации

VOLTAGE SENSING UNIT FOR SENSING VOLTAGE OF HIGH-POWER LINES USING A SINGLE-CONTACT POINT AND METHOD OF USE THEREOF

Номер: US20160069937A1
Автор: Bobowski Jake Stanley, Johnson Thomas Edward, Slamka Rick
Принадлежит:

A method is provided of ascertaining an unknown line (conductor) voltage at point X on a power line within an electrical grid comprises collecting raw voltage at or about Point X using a sensor; gathering additional data from data collection sources upstream (comprising, for example a substation) and/or downstream (comprising, for example, smart meters) to Point X (constraining data); using raw voltage, and environment and line data (comprising at least one of GPS location of sensor, GIS data of the electrical grid, phase, type of conductor, total load on conductor), to calculate voltage range at Point X; and using constraining data sequentially to bind (narrow and tighten) the voltage range from a determined range of possibilities to a likely absolute voltage measurement. 1. A method for sensing a voltage of a power line using a single contact , the method comprising:providing a voltage sensing unit, the voltage sensing unit comprising a shielded enclosure hosting a bank of capacitors comprising at least two capacitors mounted in parallel, each of the at least two capacitors being controlled by a corresponding switch, the bank of capacitors having a first connecting contact and a second connecting contact;operatively connecting one of the two connecting contact of the voltage sensing unit to the line; selecting the given capacitor using a corresponding switch;', 'measuring a corresponding voltage between the two connecting contacts; and', 'determining the voltage of the line using the measured voltages., 'for each given capacitor of the at least two capacitors2. The method of claim 1 , wherein the measuring of the given voltage at said selected capacitor comprises performing an amplification using a measurement amplifier operatively coupled to the two connecting contacts of the bank of capacitors claim 1 , the measurement amplifier having a corresponding impedance claim 1 , further wherein the determining of the voltage of the line is performing using the measured ...

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Номер записи: 40
09-03-2017 дата публикации

NON-CONTACT VOLTAGE MEASUREMENT DEVICE

Номер: US20170067939A1
Автор: Imai Hiroshi, Kawakami Goro, MATSUURA Keiki, OGIMOTO Mao, Okamura Atsuhiro, Tokusaki Hiroyuki, TOMITA Kohei
Принадлежит: Omron Corporation

Provided is a non-contact voltage measuring device capable of measuring, with given accuracy, measurement target voltages applied to various conducting wires having respective different shapes. An inner electrode which is deformable depending on a shape of a wire “w” is electrically connected, via a connecting section, to an outer electrode fixed to an electric field shield. 1. A non-contact voltage measuring device for measuring a measurement target voltage applied to a conductor , comprising:a probe;an electric circuit; andan electric field shield which covers at least part of the electric circuit so as to shield the electric circuit from an electric field incident on the electric circuit,the probe including an electrode which is deformable or movable,the probe causing a capacitance value of a parasitic capacitance formed between the electrode and the electric field shield to be maintained at a given level, in a case where the electrode is deformed or moved,the measurement target voltage being measured in accordance with a voltage signal supplied to the electric circuit via the probe in a case where the probe is brought closer to the conductor, without being in contact with the conductor, so that a coupling capacitance is formed between the probe and the conductor.2. The non-contact voltage measuring device as set forth in claim 1 , wherein:the probe includes (i) a first electrode which is deformable and (ii) a second electrode whose relative position with respect to the electric field shield is maintained;the first electrode is electrically connected to the second electrode; andthe second electrode is provided at a position at which the second electrode is capable of shielding an electric field generated between the first electrode and the electric field shield.3. The non-contact voltage measuring device as set forth in claim 1 , wherein:the probe includes a deformable section which is deformable;the deformable section is made up of a plurality of arms which are ...

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Номер записи: 41
28-02-2019 дата публикации

METHODS AND APPARATUS FOR DETERMINING CONDITIONS OF POWER LINES

Номер: US20190067941A1
Автор: Ross Rebecca, Smith Roger A
Принадлежит:

Techniques for determining conditions of power lines in a power distribution system based on data collected by a plurality of sensor units deployed in the power distribution system. The techniques include obtaining data associated with measurements collected by at least two sensor units in the plurality of sensor units, and determining, by using at least one processor, at least one condition of at least one power line in the power distribution system by using the data obtained by the at least two sensor units. 1. A method for determining conditions of power lines in a power distribution system based on measurements collected by a plurality of sensor units deployed in the power distribution system , the method comprising:obtaining first transformed data associated with a first set of measurements collected by a first sensor unit in the plurality of sensor units and second transformed data associated with a second set of one or more measurements collected by a second sensor unit in the plurality of sensor units, the first transformed data comprising a first plurality of transform coefficient values calculated by applying a shift-invariant transformation to the first set of measurements, the second transformed data comprising a second plurality of transform coefficient values calculated by applying the shift-invariant transformation to the second set of measurements; and,determining, by using at least one processor and based at least in part on one or more features calculated from the first transformed data and the second transformed data, at least one condition of at least one power line in the power distribution system, wherein the first sensor unit and the second sensor unit are coupled to different power line segments.2. The method of claim 1 , wherein:obtaining the first transformed data comprises applying the shift-invariant transformation to the first set of measurements to produce the first plurality of transform coefficient values; and,obtaining the second ...

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Номер записи: 42
17-03-2016 дата публикации

Rogowski coil and current measurement sensor including the same

Номер: US20160077133A1
Автор: Jae Chan Lee, Jae Youn Jeong, Kwang Myung Kim, Se Jin SEO
Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a current measurement sensor including: a rogowski coil having a winding coil disposed on an outer circumference part of a coaxial coil; a body case to which one end and the other end of the rogowski coil are coupled, so that the rogowski coil forms a loop; and a coupling member coupling the rogowski coil to the body case, wherein the coupling member includes: a coil coupling member having one side coupled to the rogowski coil and the other side coupled to the body case, and a case coupling member coupled to the body case and covering a coupling part between the coil coupling member and the body case.

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Номер записи: 43
15-03-2018 дата публикации

Top head housing

Номер: US20180075962A1
Автор: Matthew Smith, Zoltan Roman
Принадлежит: Individual

A top head housing for a current transformer, mounted on top of an insulating column of the current transformer, and forming a chamber for windings of the current transformer, the top head housing being made of two parts fixed one to the other, and including two openings through each of which a conductor penetrates the chamber, the openings being symmetrically opposed with reference to a main vertical axis of the top head housing, wherein the two parts of the top head housing consist of two half shells including identical bodies.

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Номер записи: 44
05-03-2020 дата публикации

Current sensing module for current sensor and method for manufacturing current sensing module

Номер: US20200072872A1
Автор: Win-Throng Chen
Принадлежит: Flex Instrument Co Ltd, FLEX INSTRUMENTS Co Ltd

The present invention provides a current sensing module for a current sensor and a method for manufacturing the current sensing module. The current sensing module includes a spacer layer including a through hole and being annular in shape, and a circuit board electrically connected to the current sensor and includes at least two structural layers. The two structural layers cover the spacer layer and each of the structural layers includes at least one metal wire layer insulated from the spacer layer. The two metal wire layers are conducted to form a loop coil surrounding the spacer layer. When a wire is located in the through hole, an external power supply power to the circuit board, such that the circuit board has a detection state in which a sensing current is outputted due to magnetic induction generated by the loop coil during the wire is electrically conducted.

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Номер записи: 45
15-03-2018 дата публикации

POWER CABLE ASSEMBLY HAVING A CIRCUIT PROTECTION DEVICE

Номер: US20180076616A1
Автор: "OBrien Sean Delaney", Banas Thomas Michael, Thrush Roger Lee
Принадлежит:

A power cable assembly includes a power cable extending between a first end and a second end having a hot conductor and a neutral conductor. The power cable assembly includes a circuit protection device along the power cable between the first and second ends. The circuit protection device has a ground fault circuit interrupt (GFCI) device configured to sense a current difference on the hot and neutral conductors to initiate a triggering event. The circuit protection device has a high-power relay device connected to the GFCI device. The high-power relay device is connected to the hot conductor and is configured to open the hot line when the triggering event is initiated by the GFCI device. 1. A power cable assembly comprising:a power cable extending between a first end and a second end, the power cable having a hot conductor and a neutral conductor; anda circuit protection device along the power cable between the first and second ends, the circuit protection device having a ground fault circuit interrupt (GFCI) device configured to sense a current difference on the hot and neutral conductors to initiate a triggering event, the circuit protection device having a high-power relay device connected to the GFCI device, the high-power relay device being connected to the hot conductor and being configured to open the hot line when the triggering event is initiated by the GFCI device.2. The power cable assembly of claim 1 , wherein the high-power relay device is normally open claim 1 , the circuit protection device closing the high-power relay device during operation of the power cable assembly and allowing the high-power relay device to open when the triggering event is sensed.3. The power cable assembly of claim 1 , wherein the high-power relay device and the GFCI device are in line with the power cable.4. The power cable assembly of claim 1 , wherein the high-power relay device and the GFCI device are contained within a common housing.5. The power cable assembly of claim ...

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Номер записи: 46
16-03-2017 дата публикации

PORTABLE ELECTRICAL GENERATOR SYSTEM FOR PROVIDING TEMPORARY DISTRIBUTION OF SINGLE-PHASE AND THREE-PHASE POWER

Номер: US20170077827A1
Автор: McCartney Mark C., Valente Nicolas V.
Принадлежит: VMC Power Systems

A portable generator system is used to provide temporary electrical power. The portable generator system has a vehicle, a generator, a step-up system, and a output interface. The step up system has one or more transformers for stepping up a voltage of the generator to a distribution voltage. 1. A system for stepping up voltage for both single-phase electrical power and three-phase electrical power , the system comprising:a first transformer for stepping up voltage;a second transformer for stepping up voltage; and the first transformer, the second transformer, and the third transformer are configured to step up three-phase power of a first voltage to a distribution voltage;', 'the first transformer and the second transformer are configured to step up single-phase power of a second voltage to the distribution voltage; and', 'the distribution voltage is predetermined., 'a third transformer for stepping up voltage, wherein2. The system for stepping up voltage for both single-phase electrical power and three-phase electrical power as of claim 1 , further comprising an enclosure that encases the first transformer claim 1 , the second transformer claim 1 , and the third transformer.3. The system for stepping up voltage for both single-phase electrical power and three-phase electrical power of claim 1 , wherein the distribution voltage is equal to or greater than 601 volts and equal to or less than 35 claim 1 ,000 volts.4. The system for stepping up voltage for both single-phase electrical power and three-phase electrical power of claim 1 , wherein the distribution voltage is 2300 claim 1 , 4160 claim 1 , 12470 claim 1 , 13800 claim 1 , 17200 claim 1 , 25000 claim 1 , or 34500 volts.5. The system for stepping up voltage for both single-phase electrical power and three-phase electrical power of claim 1 , wherein the first voltage claim 1 , measured phase to neutral claim 1 , is greater than the second voltage claim 1 , measured phase to neutral.6. The system for stepping up ...

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Номер записи: 47
14-03-2019 дата публикации

METHOD FOR MANUFACTURING AN INDUCTIVE CONDUCTIVITY SENSOR AND INDUCTIVE CONDUCTIVITY SENSOR

Номер: US20190079035A1
Автор: Nagel Thomas, Pfeifer André
Принадлежит:

A method for manufacturing an inductive conductivity sensor, wherein on both sides of a circuit board coils are placed surrounding an opening of the circuit board, and the circuit board with the coils is inserted into a housing. A sleeve is inserted through a first opening of the housing through the opening of the circuit board into the housing. The sleeve includes a first end section and a second end section and the sleeve is inserted with the first end section first into the housing, and wherein the sleeve is welded with the housing by means of a sonotrode by ultrasonic welding. Both the first end section as well as also the second end section of the sleeve are welded with the housing, wherein the sonotrode is applied exclusively on the sleeve on the side of the second end section. The invention relates further to an inductive conductivity sensor. 1. A conductivity sensor assembly , comprising:a housing including a first side wall having a first opening therethrough and a second side wall having a second opening therethrough, the first and second openings centered about a common axis extending therethrough, wherein the first side wall includes a first planar area on an interior surface of the housing, and wherein the second side wall includes a wedge-shaped profile;a circuit board including coils disposed on both sides of the circuit board and centered about an aperture through the circuit board, thereby forming a passage extending through each coil and the aperture, wherein the circuit board is disposed at least partially in the housing such that the passage through each coil and the circuit board are substantially in line with the common axis of the housing; anda sleeve having a first end section and a second end section, the first end section including a first concentrator configured to enable forming a first shear joint with the first planar area of the first side wall of the housing at or near the first end section, the first shear joint defining a first weld ...

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Номер записи: 48
14-03-2019 дата публикации

DEVICE FOR MEASURING ELECTRIC CURRENTS

Номер: US20190079116A1
Автор: BUFFAT Sebastien, HOUBRE Pascal
Принадлежит: Schneider Electric Industries SAS

A device for measuring electric currents includes Rogowski-type current sensors, each configured to measure an AC electric current in an electrical conductor, each sensor including coils that are electrically connected in series to form a measurement circuit and being joined to one another to delimit a central zone of this sensor to receive the corresponding electrical conductor. One of the coils is common to the first and second sensors, this common coil being electrically connected to the first and second measurement circuits. 110-. (canceled)11: A device for measuring electric currents , comprising:first and second Rogowski-type current sensors, each configured to measure an AC electric current in first and second electrical conductors,each of the first and second sensors including coils that are electrically connected in series to form first and second measurement circuits, respectively, each coil extending along a longitudinal axis,the coils of one and a same sensor being joined to one another to delimit a central zone of this sensor to receive the corresponding electrical conductor, the longitudinal axes of the coils of one and the same sensor forming a closed polygonal outline surrounding this central zone of this sensor,wherein one of the coils is common to the first and second sensors, the common coil being electrically connected to the first and second measurement circuits, the longitudinal axis of the common coil belonging to the first and second polygonal outlines.12: The device as claimed in claim 11 , further comprising:a third Rogowski-type current sensor configured to measure an electric current in a third electrical conductor, the third sensor including coils that are electrically connected in series to form a fourth measurement circuit, the coils being joined to one another to delimit a central zone of the third sensor to receive the third electrical conductor, the respective longitudinal axes of the coils forming a third closed polygonal outline ...

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Номер записи: 49
24-03-2016 дата публикации

CLOSURE

Номер: US20160084888A1
Автор: Busemann Friedrich A., Gravermann Mark, Lohmeier Gerhard
Принадлежит:

Closure () for receiving a section of a conductor assembly (), comprising a housing () closable around the conductor assembly (), and an electrode assembly (), which comprises a movable portion comprising a contact surface () for mechanically contacting the conductor assembly (), and a sensing electrode (), operable as a first capacitor electrode of a sensing capacitor for sensing a voltage of the conductor (). The closure further comprises urging means () for urging the movable portion of the electrode assembly () towards the conductor assembly () for establishing a mechanical surface contact between the contact surface () and the conductor assembly (), when the housing () is closed around the conductor assembly (). 1. A closure for receiving a section of a conductor assembly , the conductor assembly comprising a conductor which defines axial directions and radial directions ,the closure comprising a housing closable around the conductor assembly, and a first electrode assembly,wherein the first electrode assembly comprisesa) a movable portion which is movable relative to the housing, the movable portion comprising a contact surface for mechanically contacting the conductor assembly, andb) an electrically conductive first sensing electrode, operable as a first capacitor electrode of a sensing capacitor, which sensing capacitor comprises the conductor, or a conductor extension, as a second capacitor electrode and an electrically insulating layer, arranged between the conductor and the first sensing electrode when the housing is closed around the conductor assembly, as a dielectric, wherein,the closure further comprises urging means, arranged between the housing and the first electrode assembly,the urging means being adapted to urge the movable portion of the first electrode assembly, relative to the housing, towards the conductor assembly for establishing a mechanical surface contact between the contact surface and an outer surface of the conductor assembly, when ...

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Номер записи: 50
26-03-2015 дата публикации

Ratio metric current measurement

Номер: US20150088438A1
Автор: James J. Kinsella
Принадлежит: Individual

The total current flow in a given electric circuit path is estimated by measuring the current in a second parallel current path and applying a ratio of the conductivity of the main and secondary path. Earth leakage current is measured by passing three wires through a toroid so as to detect differential current flow. Each wire is a conduction path wire parallel to each phase cable. The relative harmonic content between the fundamental and higher frequency components of a load current are calculated using a conduction path parallel to the main power cables.

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Номер записи: 51
26-06-2014 дата публикации

Hotstick assembly for installing and removing devices from high voltage energized overhead power lines

Номер: US20140174260A1
Автор: Murray W. Davis
Принадлежит: Individual

A hotstick assembly for installing and removing an electric power line conductor device includes an electrically insulated hotstick. A lead screw driver is attached to an upper portion of the electrically insulated hotstick, the lead screw driver includes a vertical slot extending through a tubular pipe for engaging a horizontal pin on the device for clamping and unclamping jaws on the device.

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Номер записи: 52
26-06-2014 дата публикации

AUTOMATIC SWITCHABLE LOW THRESHOLD CURRENT POWER SUPPLY

Номер: US20140176275A1
Автор: DAVIS Murray W.
Принадлежит:

A device connectable to a power line conductor includes an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end. The first end is configured to be attached to a first power line conductor. An electrically conductive insulated second winding of wire wound into at least one turn. The second winding of wire includes a first end connected to the second end of the first winding of wire and a second end is configured to be attached to a second power line conductor. An automatic switchable connecting device is configured to move between a first position with the first winding of wire in series with the first and the second power line conductors and a second position with the first and the second power line conductors and the first and second windings of wire in series. 1. A device connectable to an electric power line conductor comprising:an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end, wherein the first end is configured to be attached to a first power line conductor;an electrically conductive insulated second winding of wire wound into at least one turn, the second winding of wire having a first end connected to the second end of the first winding of wire and a second end configured to be attached to a second power line conductor; andan automatic switchable connecting device configured to move between a first position with the first winding of wire in series with the first power line conductor and the second power line conductor in response to a first power line current profile and a second position with the first power line conductor, the first winding of wire, and the second winding of wire connected to the second power line conductor in series in response to a second power line current profile.2. The device of wherein the automatic switchable connecting device is configured to move between a third position connecting the ...

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Номер записи: 53
26-06-2014 дата публикации

SWITCHABLE LOW THRESHOLD CURRENT POWER SUPPLY

Номер: US20140176276A1
Автор: DAVIS Murray W.
Принадлежит:

A device connectable to a power line conductor includes an electrically conductive insulated first winding of wire wound into at least two turns having a first and a second end. The first end is configured to be attached to a first power line conductor. An electrically conductive insulated second winding of wire wound into at least one turn having a first end connected to the second end of the first winding of wire and a second end is configured to be attached to a second power line conductor. A switchable connecting device is configured to move between a first position connecting the first and second power line conductors in series, a second position connecting the first winding of wire in series with the first and the second power line conductors, and a third position connecting the first and second power line conductors and the first and second windings of wire in series. 1. A device connectable to an electric power line conductor comprising:an electrically conductive insulated first winding of wire wound into at least two turns having a first end and a second end, wherein the first end is configured to be attached to a first power line conductor;an electrically conductive insulated second winding of wire wound into at least one turn having a first end connected to the second end of the first winding of wire and a second end configured to be attached to a second power line conductor; anda switchable connecting device configured to move between a first position connecting the first power line conductor in series with the second power line conductor, a second position with the first winding of wire in series with the first power line conductor and the second power line conductor, and a third position with the first power line conductor, the first winding of wire, and the second winding of wire connected in series with the second power line conductor.2. The device of including a housing mountable to the first winding of wire and the second winding of wire including ...

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Номер записи: 54
12-05-2022 дата публикации

METHOD FOR MONITORING A POWER LINE

Номер: US20220146555A1
Автор: Birchbauer Josef Alois, ENGEL Thomas
Принадлежит: Siemens Energy Global GmbH & Co. KG

A method for monitoring a power line that carries electrical current, using a mobile inspection device, the mobile inspection device has a magnetic sensor and a camera, the method includes the following steps: measuring a magnetic field generated by the current, by the magnetic sensor; and capturing an image of the power line by the camera according to the measured magnetic field. A mobile inspection device, a computer program and a machine-readable storage medium implement the method. 1. A method for monitoring a power line that carries an electric current , using a mobile inspection device , wherein the mobile inspection device comprises a magnetic field sensor and a camera , said method comprising the following steps:measuring a magnetic field that is generated by the current, by the magnetic field sensor, andcapturing an image of the power line by the camera depending on the measured magnetic field.2. The method as claimed in claim 1 ,wherein the electric current is an alternating current,wherein a phase and/or a frequency of the electric current is identified based on the measured magnetic field,wherein the camera captures the image based on the identified phase and/or the identified frequency.3. The method as claimed in claim 2 ,wherein the capturing of an image comprises multiple exposure of a frame.4. The method as claimed in claim 2 ,wherein the capturing comprises exposure of multiple individual frames, which are added.5. The method as claimed in claim 4 ,wherein the multiple frames are shifted with respect to one another for the addition in order to compensate for a movement of the mobile inspection device.6. The method as claimed in claim 1 ,wherein, for the capturing of the image, only a specific subregion of an image sensor of the camera is read out depending on an alignment of the magnetic field sensor relative to the power line.7. The method as claimed in claim 2 ,wherein the mobile inspection device comprises at least one acoustic sensor, by means ...

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Номер записи: 55
28-03-2019 дата публикации

High-fidelity voltage measurement using resistive divider in a capacitance-coupled voltage transformer

Номер: US20190094287A1
Автор: Edmund O. Schweitzer, Iii, Veselin Skendzic
Принадлежит: Schweitzer Engineering Laboratories Inc

The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in an electric power delivery system, the CCVT comprising a first capacitor disposed between an electrical bus and a first electrical node, and a second capacitor electrically disposed between the first electrical node and a ground connection. A resistive divider in electrical communication with a first node may generate a resistive divider electrical signal corresponding to a voltage value. An intelligent electronic device (IED) in electrical communication with the resistive divider monitors a resistive divider voltage signal. The IED detects a traveling wave based on the resistive divider voltage signal and a measurement of a primary current through an electrical bus in electrical communication with the CCVT; and analyzes the traveling wave to detect a fault on the electric power delivery system.

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Номер записи: 56
08-04-2021 дата публикации

INTEGRATED CIRCUIT HAVING CURRENT-SENSING COIL

Номер: US20210104360A1
Автор: Roth Alan, SOENEN Eric
Принадлежит:

An integrated circuit includes a first and a second conductive path over a substrate, a coil structure over the substrate, a voltage sensing circuit electrically coupled with the coil structure, and a ferromagnetic structure including an open portion. The first conductive path is configured to carry a first time-varying current and to generate a first time-varying magnetic field. The second conductive path is configured to carry a second time-varying current and to generate a second time-varying magnetic field. The first conductive path and the second conductive path extend through the open portion of the ferromagnetic structure. The first conductive path includes a first conductive line below the ferromagnetic structure, a second conductive line above the ferromagnetic structure, and a first via plug coplanar with the ferromagnetic structure, the first via plug electrically coupling the first conductive line and the second conductive line. 1. An integrated circuit , comprising:a first conductive path over a substrate, the first conductive path being configured to carry a first time-varying current and to generate a first time-varying magnetic field based on the first time-varying current;a second conductive path over the substrate, the second conductive path being configured to carry a second time-varying current and to generate a second time-varying magnetic field based on the second time-varying current;a coil structure over the substrate, the coil structure being magnetically coupled with the first conductive path and the second conductive path, and being configured to generate an induced electrical potential responsive to the first time-varying magnetic field and the second time-varying magnetic field;a voltage sensing circuit electrically coupled with the coil structure and configured to measure a voltage level of the induced electrical potential; and a first conductive line below the ferromagnetic structure;', 'a second conductive line above the ferromagnetic ...

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Номер записи: 57
08-04-2021 дата публикации

POWER CONNECTOR WITH INTEGRATED POWER MONITORING

Номер: US20210104846A1
Автор: AbuGhazaleh Shadi Alex, Papageorge Ryan Gene, Scanzillo Thomas Louis
Принадлежит:

An electronic power connector including a contact configured to electrically connect a power supply to a load. The electronic power connector further including a contact core configured to receive the contact, the contact core including a transformer winding wrapped around the contact core, the transformer winding configured to sense a current 1. An electronic power connector comprising:a contact configured to electrically connect a power supply to a load; anda contact core configured to receive the contact, the contact core including a transformer winding wrapped around the contact core, the transformer winding configured to sense a current.2. The electronic power connector of claim 1 , wherein the electronic power connector further comprises a sensor.3. The electronic power connector of claim 2 , wherein the sensor is a voltage sensor.4. The electronic power connector of claim 2 , wherein the sensor is a temperature sensor.5. The electronic power connector of claim 2 , wherein the sensor slot is located at a first end of the contract core.6. The electronic power connector of claim 1 , further comprising a sleeve configured to cover the contact and the contact core.7. The electronic power connector of claim 1 , wherein the power supply is a single-phase power supply having a voltage of approximately 100 volts AC to approximately 240 volts AC.8. The electronic power connector of claim 1 , wherein the power supply has a voltage of at least one selected from the group consisting of approximately 24 volts direct current claim 1 , approximately 48 volts direct current claim 1 , and approximately 400 volts direct current.9. The electronic power connector of claim 1 , wherein the power supply is a three-phase power supply having a voltage of approximately 208 volts AC to approximately 600 volts AC.10. The electronic power connector of claim 1 , further comprising an antenna configured to transmit an electrical characteristic.11. A power connector comprising:a sleeve; 'a ...

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Номер записи: 58
21-04-2016 дата публикации

VOLTAGE DETECTING APPARATUS

Номер: US20160109486A1
Автор: YANAGISAWA Koichi
Принадлежит: HIOKI DENKI KABUSHIKI KAISHA

A voltage detecting apparatus detects a detection voltage generated in a detected object which is covered by an insulator. The voltage detecting apparatus includes: a detection electrode that is disposed so as to contact the insulator directly, or indirectly via another insulator; a vibrator that causes the insulator to vibrate; a current-to-voltage converter circuit that converts a detection current to a detection voltage signal, the detection current flowing from the detected object via the detection electrode to a reference voltage in a state where the insulator is being caused to vibrate, having an amplitude that is modulated in accordance with a potential difference between the detection voltage and the reference voltage, and being synchronized with vibration of the vibrator; and a detector circuit that detects a detection output indicating the potential difference from the detection voltage signal. 1. A voltage detecting apparatus that detects a detection voltage generated in a detected object which is covered by an insulator , the voltage detecting apparatus comprising:a detection electrode that is disposed so as to contact the insulator directly, or indirectly via another insulator;a vibrator that causes the insulator to vibrate;a current-to-voltage converter circuit that converts a detection current to a detection voltage signal, the detection current flowing from the detected object via the detection electrode to a reference voltage in a state where the insulator is being caused to vibrate, having an amplitude that is modulated in accordance with a potential difference between the detection voltage and the reference voltage, and being synchronized with vibration of the vibrator; anda detector circuit that detects a detection output indicating the potential difference from the detection voltage signal.2. The voltage detecting apparatus according to claim 1 ,wherein the detector circuit detects the detection output by detecting the detection voltage signal ...

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Номер записи: 59
02-04-2020 дата публикации

ELECTRIC CURRENT TRANSFORMER AND CURRENT MEASUREMENT UNIT

Номер: US20200105463A1
Автор: Amblard Jean-Yves, DU PELOUX DE SAINT ROMAIN Bertrand, URANKAR Lionel
Принадлежит: Schneider Electric Industries SAS

An electric current transformer including a first coil and a second coil, which are produced with a first printed circuit including a first positioning device, and a second positioning device; and a first magnetic part including a first holding device and a second magnetic part including a second holding device, the positioning device being arranged to join together with the holding device so as to hold reference faces of the magnetic parts a predetermined distance away from the turns of the first and second coils. A current measurement unit includes such a current transformer. 1. A current transformer comprising:a first coil and a second coil, which are produced with a first printed circuit of substantially parallelepipedal shape, including a first upper face, a first lower face, a first side, a second side the second side being opposite to the first side, a third side and a fourth side, the fourth side being opposite to the third side, the first coil being formed from first turns coiled about a first coil axis that is substantially perpendicular to the third and fourth sides, the second coil being formed from second turns coiled about a second coil axis that is substantially perpendicular to the third and fourth sides, the first printed circuit including a first aperture in the first upper and lower faces in order to form a through-passage for a current line, said current line forming a primary circuit of the current transformer, the first coil and the second coil being placed on either side of the first aperture and forming a secondary circuit, anda first magnetic part of elongate shape including a first reference face and at least one second magnetic part of elongate shape including a second reference face,wherein the current transformer comprises:the first printed circuit including a first positioning means, placed in proximity to the third side, and a second positioning means placed in proximity to the fourth side,the first magnetic part comprising a first ...

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Номер записи: 60
09-06-2022 дата публикации

NON-CONTACT VOLTAGE SENSING METHOD AND APPARATUS

Номер: US20220178970A1
Автор: Block Aaron, Dutta Prabal, Lorek Michael C.
Принадлежит: Vizi Metering, Inc.

A non-contact electric potential meter system to determine voltage between an AC conductor and a reference potential without direct electrical contact to the conductor. A housing provides a shielded measurement region that excludes other conductors and holds power supply means; an AC voltage sensing mechanism includes a conductive sense plate and an electrical connection to the reference potential. Waveform-sensing electronic circuitry obtains an AC voltage waveform induced by capacitive coupling between the conductor and the conductive sense plate. Capacitance-determining electronic circuitry obtains a scaling factor based on the coupling capacitance formed between the conductor and the conductive sense plate. Signal processing electronic circuitry uses the AC voltage waveform and the coupling capacitance-based scaling factor to obtain the voltage between the conductor and the reference potential. 122-. (canceled)23. A non-contact voltage sensing apparatus as described and illustrated herein , comprising a capacitive sensing mechanism capable of measuring a voltage between a hot conductor of an alternating current (AC) electrical circuit and a reference potential , without direct electrical contact to the hot conductor and without reference to any other AC voltage signal. This disclosure is directed to improved systems and methods of measuring electric potential in an alternating current (“AC”) conductor.Traditional approaches to measure AC voltage require making electrical contact with a target conductor and with a reference potential, forming a path with a voltmeter in parallel with the circuit to be measured.This application discloses a non-contact electric potential meter system suitable for obtaining a determination of a voltage between a reference potential and an energized or “hot” conductor of an alternating current electrical circuit, without direct electrical contact to the first hot conductor and without reference to any other AC voltage signal.The ...

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Номер записи: 61
09-06-2022 дата публикации

NON-CONTACT VOLTAGE SENSING METHOD AND APPARATUS

Номер: US20220178971A1
Автор: Block Aaron, Dutta Prabal, Lorek Michael C., Purnomo Brian Andika
Принадлежит: Vizi Metering, Inc.

A non-contact electric potential meter system to determine voltage between an AC conductor and a reference potential without direct electrical contact to the conductor. A housing provides a shielded measurement region that excludes other conductors and holds power supply means; an AC voltage sensing mechanism includes a conductive sense plate and an electrical connection to the reference potential. Waveform-sensing electronic circuitry obtains an AC voltage waveform induced by capacitive coupling between the conductor and the conductive sense plate. Capacitance-determining electronic circuitry obtains a scaling factor based on the coupling capacitance formed between the conductor and the conductive sense plate. Signal processing electronic circuitry uses the AC voltage waveform and the coupling capacitance-based scaling factor to obtain the voltage between the conductor and the reference potential. 122-: (canceled)23: A non-contact electric potential meter system suitable for obtaining a determination of a voltage between a first hot conductor of a first alternating current (AC) electrical circuit and a reference potential , without direct electrical contact to the first hot conductor and without comparison to a second AC voltage signal , the non-contact electric potential meter system comprising:a measurement region configured to receive the first hot conductor without interruption of the first hot conductor; and an electrode situated near the first hot conductor when the measurement region has received the first hot conductor;', 'an electrical connection connectable to a reference potential;', 'waveform-sensing electronic circuitry configured to obtain an AC voltage waveform induced by capacitive coupling between the first hot conductor and the electrode; and', 'capacitance-determining electronic circuitry configured to obtain a scaling factor based on a coupling capacitance formed between the first hot conductor and the electrode; and', 'signal processing ...

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Номер записи: 62
26-04-2018 дата публикации

PLUG SOCKET WITH CURRENT TRANSFORMER

Номер: US20180115121A1
Автор: NEUMUELLER GERNOT
Принадлежит:

An apparatus for connecting an electrical device to a high-voltage power grid with a leadthrough plug-in bushing which has a hollow receiving section which extends in a plug-in direction and is composed of an electrically nonconductive insulating material, wherein a metallic contact part is arranged on a closed end region of the receiving section, which metallic contact part extends through the insulating material of the receiving section or lengthens said receiving section in the direction of the closed end region. The apparatus can be assembled and serviced in a simple, quick and therefore cost-effective manner. The receiving section is equipped with a current sensor which is designed to detect an electric current flowing across the metallic contact part. 111-. (canceled)12. The electrical device according to claim 21 , wherein said current sensor has a circumferentially closed annular section into which said receiving section extends.13. The electrical device according to claim 12 , wherein said receiving section rotationally symmetrical in relation to an axis that extends in the plug-in direction claim 12 , and wherein said annular section delimits a circular cylinder and is arranged concentrically in relation to said receiving section.14. The electrical device according to claim 21 , which comprises an insulation barrier composed of an electrically nonconductive insulating material arranged between said receiving section and said current sensor.15. The electrical device according to claim 14 , wherein said insulating material of said insulation barrier comprises particleboard and/or plastic.16. The electrical device according to claim 14 , wherein said insulating material of said insulation barrier consists of particleboard and/or plastic.17. The electrical device according to claim 21 , wherein said insulating material comprises particleboard and/or plastic.18. The electrical device according to claim 21 , wherein said insulating material consists of ...

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Номер записи: 63
18-04-2019 дата публикации

Self-powered wireless energy sensor for efficient building management

Номер: US20190113546A1
Автор: Ankur Thareja, Ashok Sridharan, Hariharasudhan Venugopal, Mangesh Maruti Edake, Stuti Jain, Sushilkumar Madhukar Pagar, Vihari Venkatavidya Andukuri, Vivek Narain
Принадлежит: Johnson Controls Technology Co

A sensor for measuring current flow includes a housing containing a power generation circuit and a current measurement circuit. The sensor is entirely self-contained and is non-invasively attachable to a conductor. The sensor is self-powered using energy harvested by the power generation circuit. The current measurement circuit allows for continuous, uninterrupted measurement of at least one property related to the flow of current through the conductor. The sensor wirelessly transmits data related to the measured current flow to a computing device. The sensor may be used with other similar sensors to form a wireless sensor network that monitors one or more properties related to the flow of current through one or more conductors within a system.

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Номер записи: 64
18-04-2019 дата публикации

CURRENT MEASUREMENT DEVICE, MANUFACTURING METHOD, PROTECTION MODULE AND DIFFERENTIAL CIRCUIT BREAKER INCLUDING SUCH A DEVICE

Номер: US20190113547A1
Автор: BRASME Frederic, Grumel Christophe, LE GRAND Nathalie
Принадлежит: Schneider Electric Industries SAS

A current measurement device including current sensors positioned around current conductors in order to form a passage for the current conductors along an axis oriented in a first direction and a differential current sensor positioned around the set of current conductors in order to form a common passage for the current conductors along an axis oriented in a second direction. The current sensors and the differential current sensor are located in spaces that are separated by an interface plane. A method for manufacturing such a current measurement device, to a protection module and a differential circuit breaker including such a device. 1. A current measurement device , which device is arranged so as to be incorporated within a substantially parallelepipedal housing comprising an upstream face opposite a downstream face , a front face opposite a back face , and a first lateral face opposite a second lateral face , said current measurement device comprising:at least two upstream connection lugs, which lugs are intended to be electrically connected to connection lugs of an electric current breaking device for protecting at least two electrical lines;at least two downstream connection lugs, which lugs are intended to be electrically connected to operating terminals;at least two current conductors, each current conductor being arranged so as to electrically link an upstream connection lug to a downstream connection lug, respectively;at least two current sensors, each current sensor being positioned around a respective current conductor so as to form a respective passage for the current conductor along an axis oriented in a first direction in the upstream face and downstream face direction; anda differential current sensor,said current measurement device wherein the differential current sensor is positioned around the set of the at least two current conductors so as to form a common passage for the current conductors along an axis oriented in a second direction in the ...

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Номер записи: 65
27-04-2017 дата публикации

Support device of an active part of a current transformer

Номер: US20170117080A1
Автор: Michael GABER
Принадлежит: SIEMENS AG

A support device of an active part of a current transformer includes a plurality of insulating support legs which are composed of an electrically insulating material and which are constructed to carry the active part and to be supported on a housing base of a housing of the current transformer. A longitudinal axis of each insulating support leg forms a non-zero support angle with the direction of gravitational force or the vertical. A current transformer including a housing, an active part disposed in the housing and the support device for supporting the active part, is also provided.

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Номер записи: 66
13-05-2021 дата публикации

ENERGY HARVEST SPLIT CORE DESIGN ELEMENTS FOR EASE OF INSTALLATION, HIGH PERFORMANCE, AND LONG TERM RELIABILITY

Номер: US20210141003A1
Автор: Kast Michael, Knight David P., Parsons Mark A., SAXBY Dennis Allen
Принадлежит: Sentient Technology Holdings, LLC

A power distribution monitoring system is provided that can include a number of features. The system can include a plurality of power line sensing devices configured to attach to individual conductors on a power grid distribution network. In some embodiments, the power line sensors can include a split-core transformer. In some embodiments, a power line sensing device is disposed on each conductor of a three-phase network. The sensing devices can be configured to measure and monitor, among other things, current and electric-field on the conductors. Methods of installing, sealing, and protecting the split-core transformers of the power line sensors are also discussed. 1. A power line sensing device , comprising:a split-core transformer comprising a first core half having a first core face and a second core half having a second core face;a clamping mechanism that, when the power line sensing device is installed, joins the first core face to the second core face around a power line conductor; anda seal positioned between the first core face and the second core face.2. The power line sensing device of claim 1 , the power line sensing device further comprising electronics configured to receive energy harvested from the split-core transformer to power the power line sensing device.3. The power line sensing device of claim 1 , further comprising a grip pad disposed on an interior of the split-core transformer claim 1 , the grip pad configured to increase friction between the split-core transformer and the power line conductor.4. The power line sensing device of claim 1 , the seal comprising a first seal and a second seal each independently sealing the first core face and the second core face claim 1 , respectively.5. The power line sensing device of claim 1 , further comprising an o-ring or gasket providing an additional seal around a perimeter of the first core face and the second core face.6. The power line sensing device of claim 1 , the seal being a permanent low ...

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Номер записи: 67
09-04-2020 дата публикации

LOSSES REDUCTION FOR ELECTRICAL POWER DISTRIBUTION

Номер: US20200111595A1
Автор: LEMEZ Aleksander, LEMEZ Dragan
Принадлежит:

A transformer apparatus that may be applied as a distribution circuit adaptor (DCA) inserted into a branch supply circuit to reduce losses in a power distribution network. More particularly, implementations of the present disclosure provide a high-efficiency 2-phase dry type transformer apparatus with a removable core, as well as integrated instrumentation and thermal self-management. 1. A method of providing a transformer apparatus , the method comprising:providing first and second coil banks spaced apart from each other, each of the first and second coil banks includes at least one coil;providing at least one instrumentation transformer;casting a first encasement around the first and second coil banks and the at least one instrument transformer, wherein the first encasement includes first and second passages therein spaced apart from each other, each of the first and second passages extends between a top and a bottom of the first encasement within a respective one of the first and second coil banks;positioning a first core leg within the first passage of the first encasement, the first core leg includes an upper end and a lower end opposite the upper end;positioning a second core leg within the second passage of the first encasement, the second core leg includes an upper end and a lower end opposite the upper end;coupling a top core bridge to each of the respective upper ends of the first and second core legs; andcoupling a bottom core bridge to each of the respective lower ends of the first and second core legs.2. The method of wherein providing first and second coil banks comprises providing a first coil bank which comprises a first primary coil and a first secondary coil claim 1 , and providing a second coil bank which comprises a second primary coil and a second secondary coil.3. The method of wherein providing first and second coil banks comprises positioning a first secondary coil concentrically inside the first primary coil claim 2 , and positioning the ...

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Номер записи: 68
03-05-2018 дата публикации

CURRENT SENSOR

Номер: US20180120358A1
Автор: NAKAYAMA Wataru
Принадлежит: TOYOTA JIDOSHA KABUSHIKI KAISHA

Two sensor chips house respective magnetoelectric transducers. The two sensor chips are disposed in the gap. The two sensor chips are disposed such that a magnetic induction direction of each of the two sensor chips is the same as a normal direction of end faces of the magnetism-collecting core, the end faces facing the gap, and the two sensor chips are disposed in an axially symmetric manner to a straight line passing through a center of the gap. 1. A current sensor for measuring a current flowing through a conductor , the current sensor comprising:a magnetism-collecting core having a ring shape of a ring surrounding a conductor, the ring having a gap at a part of the ring shape; andtwo sensor chips housing respective magnetoelectric transducers, and the two sensor chips being disposed in the gap, the two sensor chips being disposed such that a magnetic induction direction of each of the two sensor chips is the same as a normal direction of end faces of the magnetism-collecting core, the end faces facing the gap, and the two sensor chips being disposed in a point symmetric manner to a center of the gap, as viewed from the normal direction.2. The current sensor according to claim 1 , further comprising a sensor controller claim 1 , the sensor controller being configured to output an error signal when an output difference between the two magnetoelectric transducers exceeds a predetermined threshold value claim 1 ,3. The current sensor according to claim 2 , whereinthe two sensor chips are disposed such that when the two sensor chips output positive values for a magnetic flux passing the gap respectively, a magnetic induction direction of one of the two sensor chips is opposite to the magnetic induction direction of the other one of the two sensor chips.4. A current sensor for measuring a current flowing through a conductor claim 2 , the current sensor comprising:a magnetism-collecting core having a ring shape of a ring surrounding a conductor, the ring having a gap ...

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Номер записи: 69
16-04-2020 дата публикации

Current sensing device

Номер: US20200116762A1
Автор: Jinyoung Park, Jongmahn SOHN, Seungjin HAM
Принадлежит: LS Electric Co Ltd

A current sensing device according to the present invention may comprise: a substrate part which includes at least two base substrates stacked in one direction and through which a circuit passes in the one direction; a coil part which is formed on at least one of the base substrates and surrounds the circuit; and a core part which is disposed between the base substrates while being spaced apart from the coil part, and surrounds the circuit.

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Номер записи: 70
10-05-2018 дата публикации

NON-CONTACT VOLTAGE MEASUREMENT SYSTEM

Номер: US20180128858A1
Автор: Gallavan Michael F., Huber Clark N., Ringsrud Paul Andrew
Принадлежит:

Systems and methods for measuring alternating current (AC) voltage of an insulated conductor (e.g., insulated wire) are provided, without requiring a galvanic connection between the conductor and a test electrode or probe. A non-galvanic contact (or “non-contact”) voltage measurement system includes a variable capacitance subsystem which operates to generate a variable capacitive voltage between an insulated conductor under test and earth ground. During measurement, the non-contact voltage measurement system varies the capacitance of the variable capacitance subsystem to change the impedance of a capacitive divider circuit between the insulated conductor under test and earth ground. By sequentially making two (or three) measurements across the variable capacitance subsystem, the AC voltage of the insulated conductor can be determined without requiring any galvanic connection to the insulated conductor. The determined AC voltage of the insulated conductor may then be presented to an operator and/or communicated to an external device. 1. A system to measure alternating current (AC) voltage in an insulated conductor , the system comprising:a conductive sensor positionable adjacent the insulated conductor without galvanically contacting the conductor, wherein the conductive sensor capacitively couples with the insulated conductor;{'sub': 1', '2', '2', '1, 'a variable capacitance subsystem which includes a first capacitance subsystem node and a second capacitance subsystem node, the first capacitance subsystem node electrically coupled to the conductive sensor, and the first capacitance subsystem node and the second capacitance subsystem node having a capacitance therebetween which is selectively variable between at least a first capacitance value (C) and a second capacitance value (C), the second capacitance value (C) being different from the first capacitance value (C);'}a voltage measurement subsystem which in operation detects a voltage between the first capacitance ...

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Номер записи: 71
03-06-2021 дата публикации

SELF CALIBRATION BY SIGNAL INJECTION

Номер: US20210166869A1
Автор: Alali Yael, Aljadeff Daniel, Shamir Adi, Wijsboom Dan
Принадлежит: PANORAMIC POWER LTD.

A current transformer (CT) for the purpose of, for example, current measurement, that uses a power line as a first coil and a second coil for measurement purposes, is further equipped with a third coil. Circuitry connected to the third coil is adapted to inject a known reference signal to the third coil of the CT. The injected reference signal, i.e., current, generates signals in the first and second coils of the CT. The signal generated in the second coil is compared using circuitry attached thereto to the reference signal. Based on the results, and the difference between the expected results and the actual results, updated calibration parameters are determined. These provide improved accuracy when using the CT, for example for measurement of the like of current or phase of the primary coil when measurements are adjusted using the newly determined calibration parameters. 1. A system for self-calibration of a current transformer (CT) comprising:a ferromagnetic core adapted to accommodate a current conducting wire passed therethrough, wherein the current conducting wire acts as a primary coil of the current transformer;a secondary coil wound around the ferromagnetic core, the secondary coil having a first connection point and a second connection point;a reference coil wound around the ferromagnetic core, the reference coil having a first connection point and a second connection point;an analog-to-digital converter (ADC),an analog front end (AFE), the analog front end coupling the ADC to a representation of an analog signal appearing across the first and second connection points of the secondary coil and the ADC providing as an output a digital signal representative of the analog signal appearing across the first and second connection points of the secondary coil;a digital-to-analog converter (DAC) providing an analog signal as an output in response to a digital signal received as an input; anda filter electrically coupling the analog output signal of the DAC to the ...

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Номер записи: 72
09-05-2019 дата публикации

PROBE ASSEMBLY AND ENGAGED-TYPE CAPACITIVE PROBE THEREOF

Номер: US20190137544A1
Автор: HSIEH CHIH-PENG, SU WEI-JHIH
Принадлежит:

The instant disclosure provides a probe assembly and an engaged-type capacitive probe thereof. The engaged-type capacitive probe includes a probe structure, a conductive structure and a dielectric structure. The probe structure has a probe body and a first engaging portion disposed on the probe body. The conductive structure is disposed on one side of the probe structure and has a second engaging portion corresponding to the first engaging portion. The conductive structure is disposed on the first engaging portion of the probe structure through the second engaging portion. The dielectric structure is disposed between the probe structure and the conductive structure. 1. An engaged-type capacitive probe , including:a probe structure having a probe body and a first engaging portion disposed on the probe body;a conductive structure disposed at one side of the probe structure, the conductive structure having a second engaging portion corresponding to the first engaging portion, the conductive structure being disposed on the first engaging portion of the probe structure through the second engaging portion; anda dielectric structure disposed between the probe structure and the conductive structure.2. The engaged-type capacitive probe according to claim 1 , wherein the probe structure has an exposed portion corresponding to the dielectric structure claim 1 , and the probe structure is electrically connected to the conductive structure through the exposed portion claim 1 , wherein the dielectric structure has a first surface in contact with the probe structure and a second surface in contact with the conductive structure.3. The engaged-type capacitive probe according to claim 1 , wherein the probe structure and the conductive structure are electrically insulated from each other claim 1 , and the dielectric structure has a first surface in contact with the probes structure and a second surface in contact with the conductive structure.4. The engaged-type capacitive probe ...

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Номер записи: 73
14-08-2014 дата публикации

TRANSMISSION OF ELECTRIC POWER

Номер: US20140226387A1
Автор: STAUFFER John E.
Принадлежит:

A means is provided for the transmission of electric power that makes use of a coaxial cable and a special transformer for converting three-phase alternating current to single-phase current. The geometry of the transformer comprises a toroidal core with a chord passing through the axis. The primary is wound about the torus and the secondary about the chord. 1. An apparatus for the transmission of electrical power comprising:a cable,a transformer connected to the cable, the transformer for converting a three-phase alternating current to single-phase current.2. The apparatus of claim 1 , wherein the cable is a coaxial cable.3. The apparatus of claim 2 , wherein the transformer has a core in the configuration of a torus with a chord passing through an interior of the torus claim 2 , a primary winding coiled about the torus claim 2 , and a secondary winding coiled about the chord.4. The apparatus of claim 3 , wherein the chord is a diameter of the torus.5. The apparatus of wherein the primary leads are attached to the primary winding at points equidistant on the circumference of the torus with one lead directly opposite one end of the chord.6. The apparatus of wherein the primary leads are attached to the primary winding at points equidistant on the circumference of the torus with leads rotated from the direction of the chord.7. A power conversion apparatus claim 3 , comprising:a core in the configuration of a torus with a chord passing through an interior of the torus, a primary winding coiled about the torus, and a secondary winding coiled about the chord, wherein the power conversion apparatus converts three-phase alternating current to single-phase current.8. The apparatus of claim 7 , wherein the chord is a diameter of the torus.9. The apparatus of wherein the primary leads are attached to the primary winding at points equidistant on the circumference of the torus with one lead directly opposite one end of the chord.10. The apparatus of wherein the primary leads ...

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Номер записи: 74
08-09-2022 дата публикации

CURRENT TRANSFORMER MODULE

Номер: US20220285090A1
Автор: IMAZATO Yuichi, KASATANI Kazuhiro, Mori Kazusa
Принадлежит: SHT Corporation Limited

The present invention provides a current transformer module that can achieve downsizing and keeping the creepage distance of insulation simultaneously. The current transformer module according to the present invention comprises a current transformer and a casing for housing the current transformer, wherein the current transformer includes a resin-made bobbin with a through hollow section and a core having legs inserted at least into the hollow section, the bobbin having a primary coil and a wire-wound secondary coil on the outer periphery of the hollow section, wherein the bobbin has insulation walls between the primary coil and the secondary coil wherein the insulation wall has recesses , and wherein the casing are provided with protrusions adapted to fit into the recesses. 1. A current transformer module comprising:a current transformer including a resin-made bobbin having a through hollow section and a core having legs inserted at least into the hollow section, wherein the bobbin is provided on the outer periphery of the hollow section with a U-shaped primary coil and a thin wire-wound secondary coil; anda casing for housing the current transformer;the bobbin having an insulation wall between the primary coil and the secondary coil wherein the insulation wall has a recess;the casing being provided with a protrusion adapted to fit into the recess; and having a contact area with a concaved surface to prevent the U-shaped primary coil from falling out.2. The current transformer module according to claim 1 ,the casing comprises an upper case and a lower case,the insulation wall comprising an upper insulation wall having an upper side recess formed at a position opposed to the upper case and a lower insulation wall having a lower side recess formed at a position opposed to the lower case,the protrusion comprising an upper side protrusion adapted to fit into the upper side recess and a lower side protrusion adapted to fit into the lower side recess, andthe contact area ...

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Номер записи: 75
26-05-2016 дата публикации

TERMINAL SHIELD WITH INTEGRATED CURRENT TRANSFORMER

Номер: US20160148761A1
Автор: KOEHRMANN Jorge, PARRA Enrique, PARRA Jenaro
Принадлежит: Schneider Electric USA, Inc.

A terminal shield for a circuit breaker, formed of an electrically insulating material, protects an operator from inadvertently touching the load terminal that would otherwise be exposed on the bottom side of the circuit breaker: In accordance with an example embodiment of the invention, the terminal shield is integrated with a toroidally shaped current transformer sensor, to enable measuring the current in a load wire that has been inserted through an aperture in the terminal shield. Preferably there is an access hole in the front portion of the terminal shield, which allows the operator to insert a tool through the front face of the circuit breaker, to tighten the load terminal onto the load wire. The terminal shield with the integrated current transformer sensor enables standardization of load current sensing capability for circuit breakers and further enables ease of installation without clutter in the confined regions of the load center. 1. A terminal shield for a circuit breaker , comprising:a shield structure enclosing a cavity where a load terminal is located within a circuit breaker, the shield structure including an aperture in a bottom portion through which a load wire can be inserted; anda current transformer sensor, mounted on the bottom portion of the shield structure, the current transformer sensor having a hole aligned with the aperture in the shield structure and aligned with the load terminal within the circuit breaker when the shield structure is in the closed position, to enable the load wire to be inserted through the aperture of the shield structure and through the hole of the current transformer sensor and into the load terminal, to enable sensing the load current in the load wire.2. The terminal shield for a circuit breaker of claim 1 , wherein the current transformer sensor is mounted on an inside surface of the bottom portion of the shield structure claim 1 , and fits within the cavity where the load terminal is located when the shield ...

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Номер записи: 76
10-06-2021 дата публикации

MEASURING METHOD AND HIGH-VOLTAGE TRANSDUCER WITH CLEAN AIR

Номер: US20210175007A1
Автор: Baehr Sebastian, MUELLER SEBASTIAN, Prucker Udo
Принадлежит:

A high-voltage transducer includes a housing, which spatially encloses at least one electrical measuring device and an insulating gas. The insulating gas is clean air, with which electrical insulation in the housing of the high-voltage transducer is carried out. A method for measuring with the high-voltage transducer is also provided. 112-. (canceled)13. A high-voltage transducer , comprising:a housing;at least one electrical measurement device spatially enclosed by said housing; andan insulating gas being clean air spatially enclosed by said housing.14. The high-voltage transducer according to claim 13 , wherein the high-voltage transducer is a current converter claim 13 , a voltage converter or a combined converter.15. . The high-voltage transducer according to claim 13 , wherein the insulating gas is at a pressure in a range from 6 to 15 bar.16. The high-voltage transducer according to claim 13 , wherein the clean air insulating gas is or includes synthetic air.17. The high-voltage transducer according to claim 16 , wherein the synthetic air contains 80% nitrogen and 20% oxygen.18. . The high-voltage transducer according to claim 13 , wherein said housing is a head housing or a base housing claim 13 , and said housing includes at least one of a support insulator or a pressurized gas vessel.19. The high-voltage transducer according to claim 18 , wherein:said support insulator is made of at least one of ceramic, silicone, fiberglass-reinforced plastic or a composite material; or said pressurized gas vessel is made of at least one of steel, aluminum or cast aluminum.20. The high-voltage transducer according to claim 13 , which further comprises at least one carrier on which said housing is disposed.21. The high-voltage transducer according to claim 13 , wherein said housing includes at least one of:at least one overpressure device, orat least one filling terminal, orat least one test terminal, orat least one sealtightness monitor.22. The high-voltage transducer ...

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Номер записи: 77
24-05-2018 дата публикации

IGBT Die Structure With Auxiliary P Well Terminal

Номер: US20180145162A1
Автор: Seok Kyoung Wook
Принадлежит:

An IGBT die structure includes an auxiliary P well region. A terminal, that is not connected to any other IGBT terminal, is coupled to the auxiliary P well region. To accelerate IGBT turn on, a current is injected into the terminal during the turn on time. The injected current causes charge carriers to be injected into the N drift layer of the IGBT, thereby reducing turn on time. To accelerate IGBT turn off, charge carriers are removed from the N drift layer by drawing current out of the terminal. To reduce V, current can also be injected into the terminal during IGBT on time. An IGBT assembly involves the IGBT die structure and an associated current injection/extraction circuit. As appropriate, the circuit injects or extracts current from the terminal depending on whether the IGBT is in a turn on time or is in a turn off time. 18-. (canceled)9. A method of manufacture comprising:(a) forming an P type body region that extends into an N type drift layer, wherein the N type drift layer is disposed over a P type substrate layer;(b) forming an auxiliary P type well region that extends into the N type drift layer, wherein the auxiliary P type well region and the P type body region are separated from one another by an amount of the N type drift layer;(c) forming an N type source region that extends into the P type body region;(d) forming a gate;(e) forming a first metal terminal, wherein the first metal terminal is coupled to the P type body region and to the N type source region;(f) forming a second metal terminal, wherein the second metal terminal is coupled to the gate;(g) forming a third metal terminal, wherein the third metal terminal is coupled to the auxiliary P type well region; and(h) forming a fourth metal terminal that is coupled to the P type substrate layer, wherein the P type substrate layer, the N type drift layer, the P type body region, the auxiliary P type well region, the N type source region, the first metal terminal, the second metal terminal, the ...

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Номер записи: 78
25-05-2017 дата публикации

MAGNETIZING DEVICE

Номер: US20170148555A1
Автор: Tizianel Stefano
Принадлежит: LABORATORIO ELETTROFISICO ENGINEERING S.R.L.

A magnetizing device, including an electric circuit composed of one or more branches arranged in series or in parallel, joined by nodes, so as to form multipolar magnetic geometries, powered directly or by means of a transformer by a capacitor-discharge magnetizer. Differently from the prior art, which provides for a single winding composed of a series of many turns wound specifically to form even more than one pole, the present invention combines multiple connections in series and in parallel which are localized, so as to minimize the leakage inductance of the system. The windings can therefore have even a low number of turns or even a single machine-made turn. 1. A magnetizing device comprising a coil having a main conductor , connected to an input and wound in at least one turn forming at least two poles , and a secondary conductor , connected to an output and in parallel to said main conductor by means of at least one node.2. The magnetizing device according to claim 1 , wherein said main conductor is contoured and forms a plurality of poles.3. The magnetizing device according to claim 2 , wherein said coil is axial and multipolar with a coupled connection and comprises secondary conductor terminals that are connected to a corresponding number of branches of said coil.4. The magnetizing device according to claim 1 , comprising a step-down transformer.5. The magnetizing device according to claim 4 , wherein said transformer comprises a center tap claim 4 , said center tap being used as a node.6. The magnetizing device according to claim 4 , wherein said transformer comprises secondary conductors claim 4 , said secondary conductors being used to open the branches of said coil.7. The magnetizing device according to claim 1 , comprising a ring magnetizing coil with two concentric tracks claim 1 , with poles arranged at a non-fixed pitch.8. The magnetizing device according to claim 1 , comprising a transformer comprising a primary circuit and a part of a secondary ...

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Номер записи: 79
02-06-2016 дата публикации

VOLTAGE MEASUREMENT DEVICE AND VOLTAGE SENSOR

Номер: US20160154025A1
Автор: AHN Hui-gyeong, HAN Sang-tae, SONG Seung-Hyun
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A voltage measurement device is provided. The voltage measurement device includes a contact portion configured to contact an electric wire for transmitting an alternating current (AC) voltage and to output an induced voltage induced by the AC voltage in a surface of the electric wire, a capacitive element connected in series to the contact portion, and a controller configured to calculate amplitude of the AC voltage using the induced voltage output from the contact portion and a second voltage output from the capacitive element. 1. A voltage measurement device comprising:a contact portion configured to contact an electric wire for transmitting an alternating current (AC) voltage and to output an induced voltage induced by the AC voltage in a surface of the electric wire;a capacitive element connected to the contact portion; anda controller configured to calculate an amplitude of the AC voltage using the induced voltage output from the contact portion and a second voltage output from the capacitive element.2. The voltage measurement device as claimed in claim 1 , further comprising a switching unit configured to connect and disconnect the contact portion to or from the capacitive element.3. The voltage measurement device as claimed in claim 2 , wherein the controller controls the switching unit to connect the contact portion to the capacitive element so as to receive information about the second voltage and controls the switching unit to disconnect the contact portion from the capacitive element so as to receive information about the induced voltage.4. The voltage measurement device as claimed in claim 1 , wherein:the electric wire comprises a sheath having an insulator with a preset thickness that surrounds a conductive wire with the AC voltage applied; andthe contact portion has capacitance with the electric wire.5. The voltage measurement device as claimed in claim 4 , wherein the controller calculates the amplitude of the AC voltage and the capacitance formed ...

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Номер записи: 80
21-08-2014 дата публикации

ELECTROSTATIC SHIELD FOR A TRANSFORMER

Номер: US20140232509A1
Автор: Patel Jashbhai S., Shaw Steven A.
Принадлежит: ABB TECHNOLOGY AG

An electrostatic shield for controlling the electrostatic field between a high voltage conductor and a low voltage conductor in an instrument transformer is provided. The instrument transformer has a current transformer and a voltage transformer. The current transformer has a split core which includes a first core segment and a second core segment. When the first core segment adjoins the second core segment, a current transformer is formed, having a core formed from the first and second core segments. The high voltage conductor runs between the first and second core segments of the current transformer. The first core segment is encapsulated in a polymer resin and when encapsulated, forms a first encasement. The second core segment has a low voltage winding mounted thereon. The electrostatic shield is disposed between the low voltage winding and the high voltage conductor. A second encasement is formed by encapsulating the electrostatic shield, low voltage winding and second core segment in a polymer resin. 1. An instrument transformer for measuring properties of electricity flowing in an elongated conductor , said instrument transformer comprising:a first core segment having at least one end surface;a first encasement composed of a polymer resin, said first encasement encapsulating said first core segment except for said at least one end surface;a second core segment having at least one end surface;a low voltage winding disposed around said second core segment;an electrostatic shield for connection to said elongated conductor; anda second encasement composed of a polymer resin, said second encasement encapsulating said electrostatic shield, said low voltage winding and said second core segment except for said at least one end surface of said second core segment, said electrostatic shield embedded in said polymer resin of said second encasement and disposed slightly beneath an outer planar surface of said second encasement.2. The instrument transformer of claim 1 , ...

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Номер записи: 81
16-05-2019 дата публикации

HIGH-VOLTAGE LEAD-IN INSULATING DEVICE

Номер: US20190146006A1
Автор: ALVAREZ ESCALONA Miguel, RANERO TORRES Luis, RUA SANCHEZ Jose Maria, Sabas Fernandez Jose Luis, SANCHEZ RUIZ Juan Antonio
Принадлежит:

The lead-in insulating device () of the present invention allows the passage of a live conductor () through a wall () of high-voltage electrical equipment (), and in turn allows sensing voltage and current, for which purpose it comprises at least two electric shields () and at least one current measurement element (), installed such that they allow detecting the presence/absence of voltage and precisely measuring the voltage and current, as well as a simple and rapid installation/removal thereof. 1123141. Lead-in insulating device () between an inner part () and an outer part () of high-voltage electrical equipment () , where said insulating device () comprises:{'b': 4', '5', '4', '4', '8', '2', '14', '9', '3', '14, 'a body () of insulating material and a conductor () internally going through said body () of insulating material, the body () of insulating material comprising a first end () intended for being located in the inner part () of the high-voltage electrical equipment (), and a second end () intended for being located in the outer part () of the high-voltage electrical equipment (), and'}{'b': 6', '7', '5', '4, 'at least two electric shields (, ) arranged around the conductor () and encapsulated in the same body () of insulating material,'}{'b': 6', '7', '9', '1', '7', '8', '1', '5', '6, 'characterized in that the first electric shield () is located in a position located before the second electric shield (), from the side of the second end () of the insulating device (); whereas the second electric shield () is located axially displaced towards the first end () of the insulating device () along the conductor () with respect to the first electric shield ().'}216. Insulating device () according to claim 1 , characterized in that the first electric shield () is grounded in order to make the electric field uniform.317. Insulating device () according to claim 1 , characterized in that the second electric shield () is a capacitive voltage sensing element for ...

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Номер записи: 82
01-06-2017 дата публикации

SENSOR FOR MEASURING CURRENT IN A CONDUCTOR

Номер: US20170153277A1
Автор: DRAGT Johannes Dirk Gerrit, MORSKIEFT Elisabeth Johanna Maria
Принадлежит:

A sensor for measuring current in a conductor has a substrate in the form of a stratified plate having a first metallization layer, a second metallization layer and an isolation layer between the first metallization layer and the second metallization layer, the substrate having a coil that winds along a coil axis parallel to the first metallization layer, having at least one winding. Each winding has a first track in the first metallization layer connected by a via through the first isolation layer to a second track in the second metallization layer, and the substrate has a measurer to measure the current in the coil, and having at least one winding only winding around non-magnetic material. 1. A sensor for measuring current in a conductor , the sensor comprising:a substrate in form of a stratified plate including a first metallization layer, a second metallization layer, and an isolation layer between the first metallization layer and the second metallization layer;a voltage measurement capacitor; andan energy measurer configured to measure energy stored in the voltage measurement capacitor,wherein the substrate includes a coil that winds along a coil axis parallel to the first metallization layer, including at least one winding,wherein the at least one winding includes a first track in the first metallization layer connected by a via through the first isolation layer to a second track in the second metallization layer,wherein the substrate further includes a measurer configured to measure current in the coil,wherein the at least one winding winds only around non-magnetic material,wherein the voltage measurement capacitor includes a first metallized area in the first metallization layer and a second metallized area in the second metallization layer,wherein the first metallized area and the second metallized area sandwich at least a part of the isolation layer between them.2. The sensor of claim 1 , wherein the substrate is a printed circuit board.3. The sensor of ...

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Номер записи: 83
31-05-2018 дата публикации

HIGHLY STABLE TRANSFORMER

Номер: US20180152096A1
Автор: LI Huipeng
Принадлежит:

A highly stable transformer, including a first transformer, a second transformer and a current induction device. The current induction device is provided in a load line of the first transformer for detecting an induction current in the load line of the first transformer. An induction load terminal of the current induction device is connected to a control winding. The control winding is provided in a winding of the second transformer to generate an induction voltage in the winding according to the induction current value and output a voltage value matching the load. The transformer has a zero voltage deviation, can be applied to precise appliance circuits and will not produce voltage drop. The transformer adopts active loaded lines, has good operation efficiency and good stability, saves main capacitor loss of no-load and unequal loads, and improves the startup performance of the transformer to any corresponding loads in a full-load condition. 1. A highly stable transformer , comprising a first transformer , a second transformer and a current induction device , the current induction device being provided in a load line of the first transformer for detecting an induction current in the load line of the first transformer; an induction output end of the current induction device being connected to a control winding; and the control winding being provided in a winding of the second transformer for generating an induction voltage in the winding of the second transformer so as to supplement the output power of the first transformer.2. The highly stable transformer according to claim 1 , wherein the primary coil of the first transformer is connected to the primary coil of the second transformer in series and the secondary coil of the first transformer is connected to the secondary coil of the second transformer in series.3. The highly stable transformer according to claim 2 , further comprising a three-terminal synchronization rectifier provided in an induction output line ...

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Номер записи: 84
23-05-2019 дата публикации

CURRENT TRANSFORMER MODULE AND POWER SUPPLY DEVICE INCLUDING THE SAME

Номер: US20190156998A1
Автор: HAN Cheol-Seung, NA Won-San, PARK Jin-Pyo
Принадлежит:

A power supply device includes a current transformer module capable of adjusting a power induction ratio in order to induce a certain power even when the current of a power line is changed and the current transformer module capable of minimizing the loss in power conversion while providing a certain power even when the current of the power line is changed. The disclosed current transformer module includes a magnetic core constituting a closed loop, a plurality of unit coils wound around the magnetic core, and a switch unit connected to the plurality of unit coils, and the plurality of unit coils include a plurality of unit coils for power-generation. 1. A current transformer module , comprising:in the current transformer module installed in a power line and for generating power,a magnetic core constituting a closed loop;a plurality of unit coils wound around the magnetic core; anda switch unit connected to the plurality of unit coils,wherein the plurality of unit coils comprises a plurality of unit coils for power-generation.2. The current transformer module of claim 1 ,wherein the plurality of unit coils comprises a unit coil for sensor.3. The current transformer module of claim 1 ,wherein the switch unit switches so that the plurality of unit coils are connected by one of the series connection, the parallel connection, and the series-parallel combination connection.4. The current transformer module of claim 1 ,wherein the switch unit switches so that at least some of the plurality of unit coils for power-generation are connected in series.5. The current transformer module of claim 1 ,wherein, the switch unit switches so that at least some of the plurality of unit coils are connected in parallel when the voltage detected from one of the plurality of unit coils is equal to or smaller than a reference value.6. The current transformer module of claim 1 ,wherein the switch unit switches so that at least some of the plurality of unit coils are connected in series when ...

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Номер записи: 85
24-06-2021 дата публикации

CURRENT CONVERTER WITH FLUID OR OIL PAPER INSULATION FOR HIGH VOLTAGE

Номер: US20210193375A1
Автор: KIPP Herbert
Принадлежит: RITZ Instrument Transformers GmbH

A current converter with fluid or oil paper insulation for high voltage, with a head housing through which a primary conductor passes. A measurement device through which the primary conductor passes is arranged in the head housing. The primary conductor includes two different primary conductor types, more specifically an outer tube primary conductor as the first type and one or more inner conductor primary conductors as the second type. The outer tube primary conductor surrounds an interior that is designed to receive the inner conductor primary conductor, and the inner conductor primary conductors can be inserted into the interior. The outer tube primary conductor is used to transmit power and creates an encasement for the inner conductors. Only the outer tube primary conductor needs to be sealed with respect to the head housing. Inner conductors therefore can be easily inserted or re-moved subsequently, without the need for sealing measures. 1. A current transformer with fluid or oil paper insulation for a high voltage , comprising a head housing that is passed through by a primary conductor , wherein a measurement device penetrated by the primary conductor is arranged in the head housing ,wherein the primary conductor comprises two different types, specifically an outer tube primary conductor as a first type and one or more inner conductor primary conductors as a second type, wherein the outer tube primary conductor encloses an interior that is configured to receive the one or more inner conductor primary conductors, and the one or more inner conductor primary conductors are able to be inserted into the interior.2. The current transformer of claim 1 , wherein a plurality of reception pockets are formed in the interior claim 1 , the reception pockets position the one or more inner conductor primary conductors in the interior.3. The current transformer of claim 2 , wherein spacers are provided for the reception pockets.4. The current transformer of claim 1 , ...

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Номер записи: 86
29-09-2022 дата публикации

ELECTRICAL CURRENT MEASUREMENT SYSTEM, AND DIAGNOSTIC SYSTEM

Номер: US20220308093A1
Автор: ICHIHASHI Hirohide, Ikeda Kazutaka, Sato Yuta
Принадлежит:

A current measurement system is configured to measure an alternating-current (AC) current flowing through a conductor. The AC current has a frequency within a measurement range. The system includes a current sensor and a shunt resistor. The current sensor includes a measurement coil configured to be magnetically coupled to the conductor. The shunt resistor has both ends electrically connected to both ends of the measurement coil, respectively. An output voltage across the both ends of the shunt resistor is saturated at a saturation point in a saturation frequency of the frequency of the AC current. An upper limit value of the measurement range including the frequency is higher than a fundamental frequency of the AC current. The saturation frequency is higher than or equal to the upper limit value. The current measurement system improves sensitivity to frequency components higher than the fundamental frequency of the AC current. 1. A current measurement system configured to measure an alternating-current (AC) current flowing through a conductor , the AC current having a frequency within a measurement range , the current measurement system comprising:a current sensor including a measurement coil configured to be magnetically coupled to the conductor; anda shunt resistor having both ends electrically connected to both ends of the measurement coil, respectively, whereinan output voltage across the both ends of the shunt resistor is saturated at a saturation point in a saturation frequency of the frequency of the AC current,an upper limit value of the measurement range including the frequency is higher than a fundamental frequency of the AC current, andthe saturation frequency is higher than or equal to the upper limit value.2. The current measurement system according to claim 1 , wherein the output voltage increases within the measurement range as the frequency increases.3. The current measurement system according to wherein a correlation between the frequency of the AC ...

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Номер записи: 87
15-06-2017 дата публикации

CORRELATION-EVADING COMMUTATED-ELEMENT DIRECT-CURRENT CURRENT TRANSFORMER

Номер: US20170169943A1
Автор: Morong William Henry
Принадлежит:

The present invention provides a correlation-evading commutated-element direct-current current transformer (DCCT) that offers freedom from errors caused by correlation between its commutation frequency and its input current waveform. Its commutated element, comprising a commutating switch and a current transformer generates, responsive to a commutating signal, a current in a burden, which burden generates a signal representing the DCCT input current. A drive generator generates a commutation signal that can be switched between plural frequencies. Correlation detection circuitry detects correlation between the DCCT input current waveform and its commutation frequency and issues a signal for causing the drive generator to switch commutation frequency to evade correlation. 1. A direct-current current transformer (DCCT) comprising;first and second input terminals for connecting an input current to be measured to the DCCT,an output terminal for connecting an output signal representing the input current to external measurement or control apparatus,a drive signal generator capable of generating a commutation signal of plural frequencies, further comprising circuitry responsive to a correlation evasion signal for switching between commutation frequencies,correlation detection circuitry for generating the correlation evasion signal responsive to correlation between the input current and the commutation signal frequency, a current transformer comprising a primary winding and a secondary winding and,', 'a commutating switch responsive to the commutation signal connected in a series circuit with the input terminals and with the primary winding of the current transformer, for commutating the input current in the primary winding of the current transformer to induce into the secondary winding thereof a current representing the input current and,, 'a commutated element for producing a current representing the input current comprising,'}a burden connected in series circuit with the ...

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Номер записи: 88
21-05-2020 дата публикации

SINGLE INPUT CIRCUIT FOR RECEIVING OUTPUT FROM A di/dt SENSOR OR CURRENT TRANSFORMER AND CIRCUIT BREAKER INCLUDING SAME

Номер: US20200161045A1
Автор: MILLER THEODORE J.
Принадлежит: Eaton Intelligent Power Limited

A circuit for receiving the output from one of either a current transformer or a di/dt sensor includes: an input pair having a first input and a second input; a first output; a second output; a current transformer input circuit connected between the first input and the second input; and a di/dt sensor input circuit connected between the first input and the second input. The current transformer input circuit is configured to receive output from a current transformer connected to the input pair and to output a signal representative of the current sensed thereby via the first output. The di/dt sensor input circuit is configured to receive output from a di/dt sensor connected to the input pair and to output a signal representative of the current or time rate of change of the current sensed thereby via the second output. 1. A circuit comprising:an input pair having a first input and a second input;a first output;a second output;a current transformer input sub-circuit connected between the first input and the second input; anda di/dt sensor input sub-circuit connected between the first input and the second input,wherein the current transformer input sub-circuit is configured to receive output from a current transformer connected to the input pair and to output a signal representative of the current sensed thereby via the first output, andwherein the di/dt sensor input sub-circuit is configured to receive output from a di/dt sensor connected to the input pair and to output a signal representative of the current or time rate of change of the current sensed thereby via the second output.2. The circuit of claim 1 , wherein the current transformer input sub-circuit and the di/dt sensor input sub-circuit are connected in a parallel arrangement.3. The circuit of claim 1 , further comprising: a ground connected between the first input and the second input,', 'a fifth resistor connected in parallel with a second capacitor connected between the first input and the ground, and', 'a ...

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Номер записи: 89
02-07-2015 дата публикации

MANUFACTURING METHOD OF PROBING DEVICE

Номер: US20150185254A1
Автор: Chen Ming-Chi, Li Chung-Che, Wu Chien-Chou
Принадлежит:

A manufacturing method of a probing device is provided. The manufacturing method includes following steps. First, a plurality of space transformers is disposed on a reinforcing plate and the space transformer includes a plurality of first pads. Then, the space transformer is fixed on the reinforcing plate. Thereafter, photoresist films having a plurality of openings are formed on the space transformer. The first pads are disposed in the openings. After that, a metal layer is formed and covered on the first pad. Later, the photoresist film is removed and the metal layer planarized to form a second pad. Afterwards, the reinforcing plate is electrically connected with a PCB. Thereafter, a probe head having a plurality of probing area is provided and each probing area is corresponding to one of the space transformer. The probes in the probing area are electrically connected with the internal circuitry of the space transformer. 1. A manufacturing method for a probing device comprising:providing a reinforcing plate;disposing a plurality of space transformers on the reinforcing plate, wherein a plurality of first pads are disposed on a surface of each space transformer;fixing the space transformer on the reinforcing plate, for configuring the internal circuitry of the space transformer to be electrically connected to the internal circuitry of the reinforcing plate;forming a photoresist film on the space transformer, wherein the photoresist film comprises a plurality of openings and at least a portion of the first pad is disposed in the opening;forming a metal layer in each of the plurality of openings, wherein the metal layer is disposed on and is directly contacted with the plurality of first pads for forming a plurality of second pads;providing a printed circuit board and electrically connecting the internal circuitry of the reinforcing plate to the internal circuitry of the printed circuit board; andproviding a probe head, the probe head comprising a plurality of ...

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Номер записи: 90
21-06-2018 дата публикации

CURRENT SENSING CIRCUIT AND CURRENT SENSING ASSEMBLY INCLUDING THE SAME

Номер: US20180174724A1
Автор: Gao Zhi, HOSKO DANIEL A., MILLER THEODORE J.
Принадлежит: EATON CORPORATION

A current sensing circuit for use with a Rogowski coil arranged around a conductor having a primary current includes input terminals structured to receive an output voltage of the Rogowski coil, an analog to digital converter structured to convert a differential voltage to a digital differential voltage signal, a digital integrator structured to receive the digital differential voltage signal, to implement a discrete-time transfer function that is a transform of a transfer function of an analog integrator, and to output a digital integrator output signal, and a direct current blocker filter structured to remove a direct current bias from the digital integrator output signal and to output a digital current output signal that is proportional to the primary current in the conductor. 1. A current sensing circuit for use with a Rogowski coil arranged around a conductor having a primary current , the current sensing circuit comprising:input terminals structured to receive an output voltage of the Rogowski coil;filtering elements structured to filter high frequency voltage from the output voltage and to output a filtered output voltage;an amplifier structured to receive the filtered output voltage and produce a differential voltage;an analog to digital converter structured to convert the differential voltage to a digital differential voltage signal;a digital integrator structured to receive the digital differential voltage signal, to implement a discrete-time transfer function that is a transform of a transfer function of an analog integrator, and to output a digital integrator output signal;a direct current blocker filter structured to remove a direct current bias from the digital integrator output signal and to output a digital current output signal that is proportional to the primary current in the conductor.2. The current sensing circuit of claim 1 , wherein the discrete-time transform implemented by the digital integrator is an impulse-invariant transform of the ...

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Номер записи: 91
22-06-2017 дата публикации

Dynamic Tuning for Harvesting Energy from Current Transformers

Номер: US20170179732A1
Автор: HAENSGEN GREGG JAMES, HOEPPNER BRUCE DOUGLAS, Lucas Richard William, STERJO DENIS
Принадлежит: Cooper Technologies Company

An energy harvesting system can include an electrical conductor through which primary power flows. The system can also include an instrument transformer disposed around the electrical conductor, where the instrument transformer includes a secondary inductor, where the instrument transformer creates a first transformed power through the secondary inductor using the first power. The system can also include at least one tuning capacitor electrically coupled in parallel to the secondary inductor. The system can further include at least one switch coupled in series with the at least one tuning capacitor, where the at least one switch has an open position and a closed position. The system can also include an electrical load electrically coupled to the secondary inductor and the at least one switch, where the at least one tuning capacitor modifies the first transformed power when the at least one switch is in the closed position. 1. An energy harvesting system , comprising:an electrical conductor through which primary power flows;an instrument transformer disposed around the electrical conductor, wherein the instrument transformer comprises a secondary inductor, wherein the instrument transformer creates a first transformed power through the secondary inductor using the first power,at least one tuning capacitor electrically coupled in parallel to the secondary inductor;at least one switch coupled in series with the at least one tuning capacitor, wherein the at least one switch has an open position and a closed position, wherein the closed position allows the at least one tuning capacitor to remain electrically coupled to the secondary inductor, and wherein the open position electrically decouples the at least one tuning capacitor from the secondary inductor; andan electrical load electrically coupled to the secondary inductor and the at least one switch, wherein the at least one tuning capacitor modifies the first transformed power when the at least one switch is in the ...

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Номер записи: 92
29-06-2017 дата публикации

SENSORED ELECTRICAL JUMPER

Номер: US20170184634A1
Автор: Wentzel Carl J.
Принадлежит:

A sensored electrical jumper comprises a conductor having a first end and a second end, the first end including a first connection interface and the second end including a second connection interface, a sensor section including at least one sensor disposed over the conductor between the first and second ends, the sensor section sensing at least one of current and voltage of the conductor, and a sensor output conduit extending from the sensor and oriented substantially perpendicular to the conductor axis to protect at least one sensor output wire from leakage current or other potential electrical damage. 1. A sensored electrical jumper , comprising:a conductor having a first end and a second end, the first end including a first connection interface and the second end including a second connection interface,a sensor section including at least one sensor disposed over the conductor between the first and second ends, the sensor sensing at least one of current and voltage of the conductor, anda sensor output conduit extending from the sensor and oriented substantially perpendicular to the conductor axis to protect at least one sensor output wire from leakage current or other potential electrical damage.2. The sensored electrical jumper of claim 1 , wherein the sensor output conduit comprises a conductive flexible conduit having an outer insulation layer.3. The sensored electrical jumper of claim 2 , wherein the conductive flexible conduit comprises a metallic material.4. The sensored electrical jumper of claim 1 , wherein the sensor includes a capacitive voltage sensor having an inner shield layer in contact with the conductor claim 1 , an insulation layer disposed over the inner shield layer claim 1 , and an electrically isolated outer shield layer disposed over the insulation layer.5. The sensored electrical jumper of claim 4 , wherein the electrically isolated outer shield layer comprises an electrically isolated section of conductive or semiconductive material.6. The ...

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Номер записи: 93
13-06-2019 дата публикации

CORE FOR CURRENT TRANSFORMER

Номер: US20190180932A1
Автор: HAN Cheol-Seung, KIM Young-Joon, KO Jae-Jun, NA Won-San, PARK Jin-Pyo
Принадлежит:

Disclosed is a core for a current transformer, which forms an upper core in a round shape, and is disposed at a position lower than the center of a power line having both ends of the upper core received, thereby minimizing the stress of a magnetic path, and increases the permeability, thereby enhancing the magnetic induction efficiency. The disclosed core for the current transformer includes an upper core curved in a semi-circular shape to have a receiving groove formed therein, and having both ends extended downwards to be disposed to be spaced apart from each other and a lower core disposed on the lower portion of the upper core, and having both ends extended upwards to be disposed to face both ends of the upper core. 1. A core for a current transformer , comprising:an upper core curved in a semi-circular shape to have a receiving groove formed therein, and having both ends extended downwards to be disposed to be spaced apart from each other; anda lower core disposed on the lower portion of the upper core, and having both ends extended upwards to be disposed to face both ends of the upper core.2. The core for the current transformer of claim 1 ,wherein the upper core comprisesan upper base curved in a semi-circular shape;a first upper extension portion extended in a straight-line shape in the direction of the lower core from the upper base; anda second upper extension portion spaced apart from the first upper extension portion, and extended in a straight-line shape in the direction of the lower core from the upper base.3. The core for the current transformer of claim 2 ,wherein the upper base has an upper receiving groove in a semi-cylindrical shape formed on the lower end thereof.4. The core for the current transformer of claim 2 ,wherein a lower receiving groove in a hexahedral shape is formed between the first upper extension portion and the second upper extension portion.5. The core for the current transformer of claim 2 ,wherein the first upper extension ...

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Номер записи: 94
29-06-2017 дата публикации

Current Transformer

Номер: US20170186532A1
Автор: Breder Henrik
Принадлежит:

A current transformer including a bushing, a primary conductor extending inside the bushing, which is electrically insulated, and includes a hairpin portion arranged outside the bushing, a tube arranged around the primary conductor along the hairpin portion, an electrically insulating material arranged in the tube, which electrically insulating material is arranged around the primary conductor insulation in the hairpin portion, a core arranged around the tube, and a secondary winding wound around the core. 1. A current transformer comprising:a bushing,a primary conductor extending inside the bushing, which primary conductor is electrically insulated with a primary conductor insulation, and which primary conductor comprises a hairpin portion which is arranged outside the bushing,a tube arranged around the primary conductor along the hairpin portion,an electrically insulating material arranged in the tube, which electrically insulating material is arranged around the primary conductor insulation in the hairpin portion,a core arranged around the tube, anda secondary winding wound around the core.2. The current transformer as claimed in claim 1 , wherein the electrically insulating material comprises a dielectric liquid.3. The current transformer as claimed in claim 2 , wherein the dielectric liquid contained in the tube is oil.4. The current transformer as claimed in claim 1 , wherein the electrically insulating material comprises a quartz filling.5. The current transformer as claimed in claim 1 , wherein the primary conductor is hollow and has an inner channel along the entire primary conductor claim 1 , wherein the current transformer comprises a dielectric liquid in the inner channel claim 1 , arranged to circulate in the primary conductor.6. The current transformer as claimed in claim 5 , wherein the primary conductor insulation comprises paper and foil.7. The current transformer as claimed in claim 1 , comprising a frame assembly claim 1 , wherein the hairpin ...

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Номер записи: 95
04-06-2020 дата публикации

IMPROVEMENTS IN OR RELATING TO PROTECTION RELAYS

Номер: US20200176931A1
Автор: Aston Paul, Fawcett Timothy, Kidd Simon
Принадлежит:

A protection relay connection assembly () for connecting a current transformer () and/or a voltage transformer () of an electrical network () to a protection relay () is provided. The protection relay connection assembly () includes a protection relay data acquisition board () and a protection relay connector (). The protection relay data acquisition board () includes a first current mating member () connectable to a current measurement sensor (), the current measurement sensor () being connectable in use to the protection relay () and/or a first voltage mating member () connectable to a voltage measurement sensor (), the voltage measurement sensor () being connectable in use to the protection relay (). The protection relay connector () includes a second current mating member () connectable to the current transformer () and/or a second voltage mating member () connectable to the voltage transformer (). The first current mating member () and the second current mating member () are selectively mateable with one another to permit a measured current waveform of the electrical network () to be transmitted from the current transformer () to the protection relay (). The first voltage mating member () and the second voltage mating member () are shaped to be selectively mateable with one another to permit a measured voltage waveform of the electrical network () to be transmitted from the voltage transformer () to the protection relay (). Wherein the first current mating member () is shaped to prevent mating of the first current mating member () with the second voltage mating member (), and the first voltage mating member () is shaped to prevent mating of the first voltage mating member () with the second current mating member (). 115-. (canceled)16. A protection relay connection assembly for connecting a current transformer and/or a voltage transformer of an electrical network to a protection relay , the protection relay connection assembly comprising:a protection relay data ...

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Номер записи: 96
13-07-2017 дата публикации

ENERGY HARVESTING DEVICE

Номер: US20170199533A1
Автор: MCCOLLOUGH Norman D.
Принадлежит:

A device for harvesting energy from a power line carrying AC current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first DC core-flux control winding wound around the first section of the core; and a second DC core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings. 1. A device for harvesting energy from a power line carrying AC current comprising:a transformer having a core with separate first and second sections, with the core being formed of ceramic or metal alloy material having a relative magnetic permeability of at least about 30,000;a first secondary winding wound around the first section of the core;a second secondary winding wound around the second section of the core;a first DC core-flux control winding wound around the first section of the core; anda second DC core-flux control winding wound around the second section of the core;wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings.2. The device of claim 1 , wherein the core has a relative magnetic permeability of at least about 50 claim 1 ,000.3. The device of claim 1 , wherein the ceramic material is sintered MnZnFeO.4. The ...

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Номер записи: 97
13-07-2017 дата публикации

APPARATUS AND METHOD FOR TRANSFORMING ALTERNATING ELECTRICAL ENERGY

Номер: US20170201185A1
Автор: RIVA Lorenzo, VEGGIAN Massimo
Принадлежит:

An apparatus for transforming alternating electrical energy supplied by alternating electrical energy supply means to appliances using alternating electrical energy through electrical transformation means operatively interposed between and electromagnetically coupled to said alternating electrical energy supply means and to said appliances using alternating electrical energy, said electrical transformer means being of the two-stage type and comprising a first electrical transformer assembly and a second electrical transformer assembly, at least one permanent magnet being associated with said first electrical transformer assembly and positioned with respect to said first electrical transformer assembly in such a way that, when said alternating electrical energy supply means are switched on, the permanent magnetic field produced by said at least one permanent magnet is added to and amplifies the alternating electromagnetic field produced by said electrical transformer means, thereby amplifying the electrical energy transferred to said second transformer assembly and therefore to said appliances using alternating electrical energy. 1. An apparatus for transforming alternating electrical energy supplied by alternating electrical energy supply means to appliances using said alternating electrical energy through electrical transformer means operatively interposed between and electrically coupled to said alternating electrical energy supply means and said appliances using alternating electrical energy , characterized in that said electrical transformer means are of the two-stage type and comprise a first electrical transformer assembly and a second electrical transformer assembly , in that at least one permanent magnet is associated with said first electrical transformer assembly and positioned with respect to said first electrical transformer assembly in such a way that , when said alternating electrical energy supply means are switched on , the permanent magnetic field ...

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Номер записи: 98
21-07-2016 дата публикации

CURRENT TRANSFORMER SYSTEM WITH CHARACTERIZATION

Номер: US20160209446A1
Автор: KAJI Samir
Принадлежит: SELEC CONTROLS PVT. LTD.

A current transformer system with characterization is disclosed. The current transformer system comprises at least one current transformer unit generating a secondary current output relative to a primary current input, and a characterizing circuit storing a set of characteristics measured under test conditions in a memory of the characterizing circuit which characteristics represent the relation between the primary current input and the secondary current output of the current transformer unit under various operating conditions, the characterizing circuit further communicating at least one of the characteristics via the communication interface to an onward device to allow dynamic compensation for any errors in the characteristics of the at least one current transformer unit at the device. 1. A current transformer system comprising:at least one current transformer unit for receiving a primary current input to generate a secondary current output relative to said primary current input, said secondary current output being metered to an electronic device; anda characterizing circuit attached to said at least one current transformer unit and electrically coupled to a communication interface;wherein, the relation between said primary current input and said secondary current output of said current transformer unit under various operating conditions represent characteristics of said current transformer unit, a set of said characteristics measured under test conditions are stored in a memory of said characterizing circuit, said characterizing circuit being adapted to communicate at least one of said characteristics via said communication interface to said electronic device to allow dynamic compensation for any errors in said characteristics of said at least one current transformer unit at said electronic device.2. The current transformer system as claimed in claim 1 , wherein at least one connector terminal is provided for connecting said current transformer system to said ...

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Номер записи: 99
21-07-2016 дата публикации

Detector for a conductor of an electrical network

Номер: US20160209447A1
Автор: Philippe CAOUS
Принадлежит: Schneider Electric Industries SAS

A detector for an electrical conductor includes a frame on which is mounted a mechanism including a magnetic toroid, divided into a first and a second branches and at least two jaws for anchoring the detector on the electrical conductor, each jaw being rotationally mobile between an open position and a locked position. The first branch of the toroid is secured to the frame and its second branch is rotationally mobile relative to the first branch, under the action of an elastic return member, between an open position, a preclosure position and a closed position of the magnetic toroid. The mechanism also includes a bearing member), secured to the second branch and defining at least one concave volume for partially receiving the electrical conductor. The bearing member is suitable for transmitting to the second branch a torque of pre-closure to a pre-closure position.

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Номер записи: 100