ZA99972B - Differential protection device. - Google Patents

Differential protection device.

Info

Publication number
ZA99972B
ZA99972B ZA9900972A ZA99972A ZA99972B ZA 99972 B ZA99972 B ZA 99972B ZA 9900972 A ZA9900972 A ZA 9900972A ZA 99972 A ZA99972 A ZA 99972A ZA 99972 B ZA99972 B ZA 99972B
Authority
ZA
South Africa
Prior art keywords
secondary winding
load
protection device
circuit
signaling
Prior art date
Application number
ZA9900972A
Inventor
Marc Paupert
Michel Jacquot
Original Assignee
Schneider Electric Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9523025&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA99972(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schneider Electric Sa filed Critical Schneider Electric Sa
Publication of ZA99972B publication Critical patent/ZA99972B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H02H3/335—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/006—Calibration or setting of parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Power Steering Mechanism (AREA)
  • Window Of Vehicle (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Semiconductor Lasers (AREA)
  • Facsimile Transmission Control (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Pyrrole Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The device includes an adjustable load on the detection circuit, enabling adjustment of threshold operating value. The differential protection device comprises a torus (1) for measuring the differential currents in the main conductors (2). It includes a first secondary winding (6) connected to a processing circuit, and a second secondary winding (8) connected to a signaling circuit. There is also a supplementary winding (10) in which a test current (It) can flow. The processing circuit (7) includes a threshold control device (12) which modifies the load of the first secondary winding (6) in order to change the calibrated operating value. When the load on the first secondary winding is very much less than the load on the second secondary winding, signaling is dependent on the selected calibration. The protection device includes a test circuit which selects a low calibration when the test current flows.
ZA9900972A 1998-02-11 1999-02-08 Differential protection device. ZA99972B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9801858A FR2774822B1 (en) 1998-02-11 1998-02-11 DIFFERENTIAL PROTECTION DEVICE

Publications (1)

Publication Number Publication Date
ZA99972B true ZA99972B (en) 1999-08-11

Family

ID=9523025

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9900972A ZA99972B (en) 1998-02-11 1999-02-08 Differential protection device.

Country Status (7)

Country Link
EP (1) EP0936716B2 (en)
CN (1) CN1103506C (en)
AT (1) ATE430394T1 (en)
DE (1) DE69940796D1 (en)
ES (1) ES2323295T3 (en)
FR (1) FR2774822B1 (en)
ZA (1) ZA99972B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824951B1 (en) * 2001-05-21 2003-07-25 Schneider Electric Ind Sa DETECTION TRANSFORMER FOR DIFFERENTIAL PROTECTION DEVICE AND PROTECTION DEVICE COMPRISING SUCH A TRANSFORMER
CN1310390C (en) * 2002-06-02 2007-04-11 国电南京自动化股份有限公司 Fault-tolerant quick discrimination method for differential protection of parallel reactor
CN100353630C (en) * 2003-11-06 2007-12-05 北京四方继保自动化有限公司 Circuit longitudinal differential protection braking curve and closed locking angle testing method
FR2865582B1 (en) * 2004-01-22 2006-03-10 Schneider Electric Ind Sas DIFFERENTIAL PROTECTION DEVICE WITH SIMPLIFIED ADJUSTMENT MEANS FOR PROTECTIVE PARAMETERS
FR2891093B1 (en) * 2005-09-16 2007-10-26 Schneider Electric Ind Sas ELECTRONIC TRIGGER WITH MONITORING MEANS, CIRCUIT BREAKER COMPRISING SUCH A TRIGGER AND SURVEILLANCE METHOD.
FR2910189B1 (en) * 2006-12-18 2009-01-09 Schneider Electric Ind Sas DEVICE FOR DIFFERENTIAL PROTECTION.
US7633399B2 (en) * 2007-02-27 2009-12-15 Eaton Corporation Configurable arc fault or ground fault circuit interrupter and method
AT509252B1 (en) * 2008-11-13 2022-11-15 Moeller Gebaeudeautomation Gmbh RESIDUAL CIRCUIT BREAKER
CN101464473B (en) * 2008-12-31 2011-08-17 深圳创维－Rgb电子有限公司 Electric voltage exception protection device used for circuit board test
CN102005721B (en) * 2009-08-31 2014-09-03 西门子公司 Differential current transformer and residual current operated protective device
AT510330A2 (en) * 2010-08-19 2012-03-15 Eaton Gmbh SWITCHGEAR
FR3026847B1 (en) * 2014-10-01 2019-04-26 Schneider Electric Industries Sas DEVICE AND METHOD FOR MONITORING THE CONDITION OF AN ELECTRICAL PROTECTION OR POWER SUPPLY CIRCUIT IN AN ELECTRIC POWER DISTRIBUTION NETWORK OR CIRCUIT, AND A CORRESPONDING DISTRIBUTION NETWORK AND CIRCUIT

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209818A (en) † 1978-03-15 1980-06-24 Square D Company Circuit breaker having an electronic fault sensing and trip initiating unit
GB2072441A (en) † 1980-02-23 1981-09-30 Redsure Elp Ltd Apparatus for monitoring electrical earth leakage currents
DE3114213C3 (en) † 1980-04-15 1994-09-01 Westinghouse Electric Corp Method of operating a circuit breaker
US4335413A (en) † 1980-04-15 1982-06-15 Westinghouse Electric Corp. Circuit interrupter with remote indicator and power supply
US4351013A (en) † 1980-04-15 1982-09-21 Westinghouse Electric Corp. Circuit interrupter with multiple display and parameter entry means
GB2162002A (en) † 1984-07-20 1986-01-22 Hsieh Teng Jui Circuit breaker with load alarm
US4837519A (en) † 1985-09-06 1989-06-06 Southern California Edison Company Fault detection
FR2604294B1 (en) † 1986-09-23 1994-05-20 Merlin Et Gerin MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER WITH MODULAR ASSEMBLY
US4833564A (en) * 1987-09-24 1989-05-23 Siemens Energy & Automation, Inc. Current sensing relay circuit with adjustable sensitivity and tracking test circuit
US5283553A (en) † 1988-07-07 1994-02-01 Mitsubishi Denki Kabushiki Kaisha Switch with pre-alarm means
JPH03210726A (en) † 1990-01-12 1991-09-13 Mitsubishi Electric Corp Circuit breaker with wiring for electric leakage alarm function
IL97694A0 (en) † 1991-03-27 1992-06-21 Amit Electronics & Engineering Device and method for gfci time response and ground test
US5373411A (en) † 1991-09-30 1994-12-13 Eaton Corporation Remote control circuit breaker system
CA2093061C (en) * 1992-07-22 2005-02-15 Raymond H. Legatti Leakage current protection device adapted to a wide variety of domestic and international applications

Also Published As

Publication number Publication date
CN1103506C (en) 2003-03-19
EP0936716B1 (en) 2009-04-29
EP0936716B2 (en) 2015-12-30
DE69940796D1 (en) 2009-06-10
CN1226098A (en) 1999-08-18
EP0936716A1 (en) 1999-08-18
ES2323295T3 (en) 2009-07-10
FR2774822A1 (en) 1999-08-13
ATE430394T1 (en) 2009-05-15
FR2774822B1 (en) 2000-03-17

Similar Documents

Publication Publication Date Title
GB2412511B (en) Measuring devices
ZA99972B (en) Differential protection device.
GB2342795B (en) Improvements relating to monitoring apparatus for electrical circuits
EP0326237A3 (en) Control circuit with validity-determining arrangement
KR910003389A (en) MONOLITHIC Resistor Comparator Circuit
GB2341737B (en) Fault protection apparatus
ES8601485A1 (en) Detector for detecting the flow of a current through one or more conductors
EP0689271B1 (en) An earth leakage unit
EP0446933A2 (en) Circuit breaker
NZ228158A (en) Circuit breaker electronic trip unit: trip test circuit
ATE61166T1 (en) CURRENT SENSOR ARRANGEMENT AND METHOD FOR THE CONTROL CIRCUIT OF A CIRCUIT BREAKER.
US7492562B2 (en) AFCI temperature compensated current sensor
KR860700191A (en) How to adjust electronic circuit
KR20010006039A (en) Device for regulating the flow of electricity through a consumer
GB2026706A (en) Current Sensor with Switchable Range-changing Resistor
KR900017248A (en) Residual current circuit breaker and its tripping range setting method
GB2244397A (en) Residual current protective device
EP0343731A3 (en) Unity-gain current-limiting circuit
US4337434A (en) Compensator for slowly responding sensors
GB2072443A (en) An earth fault detector
JPS55110966A (en) Driver circuit
EP0036752B1 (en) Protection apparatus for electric power transmission systems
JPS5595409A (en) Overcurrent detector of pulse-width-modulated signal amplifier circuit
GB1527963A (en) Electrical protection apparatus
KR0137953Y1 (en) Overcurrent protection circuit