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
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)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Pyrrole Compounds (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Semiconductor Lasers (AREA)
- Facsimile Transmission Control (AREA)
- Window Of Vehicle (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Power Steering Mechanism (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.
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)
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)
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 |
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 |
DE3114213C3 (en) † | 1980-04-15 | 1994-09-01 | Westinghouse Electric Corp | Method of operating a circuit breaker |
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 |
-
1998
- 1998-02-11 FR FR9801858A patent/FR2774822B1/en not_active Expired - Fee Related
-
1999
- 1999-01-18 EP EP99410002.2A patent/EP0936716B2/en not_active Expired - Lifetime
- 1999-01-18 AT AT99410002T patent/ATE430394T1/en active
- 1999-01-18 ES ES99410002T patent/ES2323295T3/en not_active Expired - Lifetime
- 1999-01-18 DE DE69940796T patent/DE69940796D1/en not_active Expired - Lifetime
- 1999-02-08 ZA ZA9900972A patent/ZA99972B/en unknown
- 1999-02-10 CN CN99102182A patent/CN1103506C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2774822B1 (en) | 2000-03-17 |
CN1103506C (en) | 2003-03-19 |
ES2323295T3 (en) | 2009-07-10 |
EP0936716A1 (en) | 1999-08-18 |
CN1226098A (en) | 1999-08-18 |
FR2774822A1 (en) | 1999-08-13 |
EP0936716B2 (en) | 2015-12-30 |
DE69940796D1 (en) | 2009-06-10 |
ATE430394T1 (en) | 2009-05-15 |
EP0936716B1 (en) | 2009-04-29 |
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