GB2513814A - Electrical safety device - Google Patents

Electrical safety device Download PDF

Info

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
Application number
GB1415542.8A
Other versions
GB201415542D0 (en
GB2513814B (en
Inventor
Matthew Pope
Feyaz Sheikh
David E Foley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TII TECHNOLOGIES Inc
Original Assignee
TII TECHNOLOGIES Inc
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
Application filed by TII TECHNOLOGIES Inc filed Critical TII TECHNOLOGIES Inc
Priority to GB1908765.9A priority Critical patent/GB2571679B/en
Publication of GB201415542D0 publication Critical patent/GB201415542D0/en
Publication of GB2513814A publication Critical patent/GB2513814A/en
Application granted granted Critical
Publication of GB2513814B publication Critical patent/GB2513814B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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.
GB1415542.8A 2012-05-03 2013-05-03 Electrical safety device Active GB2513814B (en)

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
GB1415542.8A Active GB2513814B (en) 2012-05-03 2013-05-03 Electrical safety device
GB1908765.9A Active GB2571679B (en) 2012-05-03 2013-05-03 Electrical safety device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1207789.7A Ceased GB201207789D0 (en) 2012-05-03 2012-05-03 Electrical safety device

Family Applications After (1)

Application Number Title Priority Date Filing Date
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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
WO2013166388A1 (en) 2013-11-07
GB201207789D0 (en) 2012-06-13
GB201415542D0 (en) 2014-10-15
WO2013166388A8 (en) 2014-06-05
GB2513814B (en) 2019-09-11
GB2571679B (en) 2019-11-27
GB2571679A (en) 2019-09-04
GB201908765D0 (en) 2019-07-31

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