GB2513814A - Electrical safety device - Google Patents
Electrical safety device Download PDFInfo
- Publication number
- GB2513814A GB2513814A GB1415542.8A GB201415542A GB2513814A GB 2513814 A GB2513814 A GB 2513814A GB 201415542 A GB201415542 A GB 201415542A GB 2513814 A GB2513814 A GB 2513814A
- Authority
- GB
- United Kingdom
- Prior art keywords
- controller
- residual current
- load circuit
- current detection
- safety device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Programmable Controllers (AREA)
Abstract
An electrical safety device includes a programmable controller, a switching stage operable by the controller to connect or disconnect a load circuit from a source of power, and a residual current detection stage connected to the controller and operative in a self-test mode to send a fault signal to the controller in the event of detection of residual currents in the load circuit. The controller operates in accordance with a program to cause the switching stage to disconnect the load in response to the fault signal. The controller is also operable to apply a test signal to the residual current detection stage to simulate presence of a residual current in the load circuit and to monitor the response of the residual current detection stage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1908765.9A GB2571679B (en) | 2012-05-03 | 2013-05-03 | Electrical safety device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1207789.7A GB201207789D0 (en) | 2012-05-03 | 2012-05-03 | Electrical safety device |
PCT/US2013/039471 WO2013166388A1 (en) | 2012-05-03 | 2013-05-03 | Electrical safety device |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201415542D0 GB201415542D0 (en) | 2014-10-15 |
GB2513814A true GB2513814A (en) | 2014-11-05 |
GB2513814B GB2513814B (en) | 2019-09-11 |
Family
ID=46330768
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB1207789.7A Ceased GB201207789D0 (en) | 2012-05-03 | 2012-05-03 | Electrical safety device |
GB1908765.9A Active GB2571679B (en) | 2012-05-03 | 2013-05-03 | Electrical safety device |
GB1415542.8A Active GB2513814B (en) | 2012-05-03 | 2013-05-03 | Electrical safety device |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB1207789.7A Ceased GB201207789D0 (en) | 2012-05-03 | 2012-05-03 | Electrical safety device |
GB1908765.9A Active GB2571679B (en) | 2012-05-03 | 2013-05-03 | Electrical safety device |
Country Status (2)
Country | Link |
---|---|
GB (3) | GB201207789D0 (en) |
WO (1) | WO2013166388A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107861444B (en) * | 2017-12-22 | 2023-08-01 | 江西江铃汽车集团改装车股份有限公司 | Integrated electrical system |
CN111864694B (en) * | 2019-04-30 | 2022-09-27 | 上海复旦微电子集团股份有限公司 | Residual current protection circuit |
CN111983396B (en) * | 2020-07-16 | 2023-06-13 | 中广核核电运营有限公司 | Safety protection system for electric high-voltage test area |
CN112858898B (en) * | 2021-01-07 | 2023-04-04 | 上海新时达电气股份有限公司 | Relay fault detection method |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4286206A (en) * | 1979-10-09 | 1981-08-25 | Combustion Engineering, Inc. | Load-responsive treater controller |
US5136458A (en) * | 1989-08-31 | 1992-08-04 | Square D Company | Microcomputer based electronic trip system for circuit breakers |
US5621298A (en) * | 1994-10-06 | 1997-04-15 | Motor Appliance Corporation | Power supply with automatic charge measuring capability |
US5633774A (en) * | 1994-02-25 | 1997-05-27 | Siemens Energy & Automation Inc | Electronic overload relay power source |
US6807035B1 (en) * | 2000-11-28 | 2004-10-19 | Hubbell Incorporated | Fault interrupter using microcontroller for fault sensing and automatic self-testing |
US20070223165A1 (en) * | 2006-03-22 | 2007-09-27 | Itri Benedict A | Line powering in a multi-line environment |
US7852606B2 (en) * | 2005-08-24 | 2010-12-14 | Leviton Manufacturing Company, Inc. | Self-testing circuit interrupting device |
US8125228B2 (en) * | 2000-02-17 | 2012-02-28 | Pass & Seymour, Inc. | Protective device with automated self-test |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6253121B1 (en) * | 1998-09-03 | 2001-06-26 | Balboa Instruments, Inc. | Control system for bathers with ground continuity and ground fault detection |
US20070208520A1 (en) * | 2006-03-01 | 2007-09-06 | Siemens Energy & Automation, Inc. | Systems, devices, and methods for arc fault management |
US7911746B2 (en) * | 2006-06-01 | 2011-03-22 | Leviton Manufacturing Co., Inc. | GFCI with self-test and remote annunciation capabilities |
US8570181B2 (en) * | 2010-03-15 | 2013-10-29 | Siemens Industry, Inc. | Method and apparatus for supervisory circuit for ground fault circuit interrupt device |
-
2012
- 2012-05-03 GB GBGB1207789.7A patent/GB201207789D0/en not_active Ceased
-
2013
- 2013-05-03 WO PCT/US2013/039471 patent/WO2013166388A1/en active Application Filing
- 2013-05-03 GB GB1908765.9A patent/GB2571679B/en active Active
- 2013-05-03 GB GB1415542.8A patent/GB2513814B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4286206A (en) * | 1979-10-09 | 1981-08-25 | Combustion Engineering, Inc. | Load-responsive treater controller |
US5136458A (en) * | 1989-08-31 | 1992-08-04 | Square D Company | Microcomputer based electronic trip system for circuit breakers |
US5633774A (en) * | 1994-02-25 | 1997-05-27 | Siemens Energy & Automation Inc | Electronic overload relay power source |
US5621298A (en) * | 1994-10-06 | 1997-04-15 | Motor Appliance Corporation | Power supply with automatic charge measuring capability |
US8125228B2 (en) * | 2000-02-17 | 2012-02-28 | Pass & Seymour, Inc. | Protective device with automated self-test |
US6807035B1 (en) * | 2000-11-28 | 2004-10-19 | Hubbell Incorporated | Fault interrupter using microcontroller for fault sensing and automatic self-testing |
US7852606B2 (en) * | 2005-08-24 | 2010-12-14 | Leviton Manufacturing Company, Inc. | Self-testing circuit interrupting device |
US20070223165A1 (en) * | 2006-03-22 | 2007-09-27 | Itri Benedict A | Line powering in a multi-line environment |
Also Published As
Publication number | Publication date |
---|---|
GB2571679B (en) | 2019-11-27 |
WO2013166388A1 (en) | 2013-11-07 |
GB201207789D0 (en) | 2012-06-13 |
WO2013166388A8 (en) | 2014-06-05 |
GB201415542D0 (en) | 2014-10-15 |
GB201908765D0 (en) | 2019-07-31 |
GB2513814B (en) | 2019-09-11 |
GB2571679A (en) | 2019-09-04 |
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