GB9011803D0 - Electrical protection devices - Google Patents

Electrical protection devices

Info

Publication number
GB9011803D0
GB9011803D0 GB909011803A GB9011803A GB9011803D0 GB 9011803 D0 GB9011803 D0 GB 9011803D0 GB 909011803 A GB909011803 A GB 909011803A GB 9011803 A GB9011803 A GB 9011803A GB 9011803 D0 GB9011803 D0 GB 9011803D0
Authority
GB
United Kingdom
Prior art keywords
protection devices
electrical protection
electrical
devices
protection
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
GB909011803A
Other versions
GB2244398B (en
GB2244398A (en
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.)
Novar ED&S Ltd
Original Assignee
MK Electric Ltd
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 MK Electric Ltd filed Critical MK Electric Ltd
Priority to GB9011803A priority Critical patent/GB2244398B/en
Publication of GB9011803D0 publication Critical patent/GB9011803D0/en
Priority to PCT/GB1991/000806 priority patent/WO1991019340A1/en
Priority to AU78687/91A priority patent/AU7868791A/en
Publication of GB2244398A publication Critical patent/GB2244398A/en
Application granted granted Critical
Publication of GB2244398B publication Critical patent/GB2244398B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H02H3/26—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
    • 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
    • H02H3/338—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 also responsive to wiring error, e.g. loss of neutral, break
GB9011803A 1990-05-25 1990-05-25 Electrical protection devices Expired - Lifetime GB2244398B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9011803A GB2244398B (en) 1990-05-25 1990-05-25 Electrical protection devices
PCT/GB1991/000806 WO1991019340A1 (en) 1990-05-25 1991-05-22 Electrical protection devices
AU78687/91A AU7868791A (en) 1990-05-25 1991-05-22 Electrical protection devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9011803A GB2244398B (en) 1990-05-25 1990-05-25 Electrical protection devices

Publications (3)

Publication Number Publication Date
GB9011803D0 true GB9011803D0 (en) 1990-07-18
GB2244398A GB2244398A (en) 1991-11-27
GB2244398B GB2244398B (en) 1994-03-16

Family

ID=10676605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9011803A Expired - Lifetime GB2244398B (en) 1990-05-25 1990-05-25 Electrical protection devices

Country Status (3)

Country Link
AU (1) AU7868791A (en)
GB (1) GB2244398B (en)
WO (1) WO1991019340A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9109477D0 (en) * 1991-05-02 1991-06-26 Mk Electric Ltd Electrical protection devices
GB2301498B (en) * 1992-07-22 1997-01-29 Technology Res Corp Ground fault circuit interrupter
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
IE930319A1 (en) * 1993-04-27 1994-11-02 Shakira Ltd Circuit for detecting a faulty mains neutral
ZA94924B (en) * 1993-07-09 1994-08-24 Circuit Breaker Ind An earth leakage unit
US5459630A (en) * 1993-09-15 1995-10-17 Eaton Corporation Self testing circuit breaker ground fault and sputtering arc trip unit
SI0741927T1 (en) * 1994-01-24 1999-04-30 Schrack Energietechnik Gmbh Residual current safety switch
JP2992449B2 (en) * 1994-11-15 1999-12-20 松下電工株式会社 Circuit breaker
US7190124B2 (en) 2005-05-16 2007-03-13 Lutron Electronics Co., Inc. Two-wire dimmer with power supply and load protection circuit in the event of switch failure
DE102007030996A1 (en) * 2007-07-04 2009-01-15 Siemens Ag Residual current circuit breaker and method for building a residual current circuit breaker
CN102231510B (en) * 2011-07-01 2014-04-09 河北工业大学 Pulsating DC (direct current) aftercurrent protector and running method thereof
CN104426128B (en) * 2013-09-05 2018-01-19 西门子公司 Broken neutral line detects circuit and corresponding residual current circuit breaker
CN203983940U (en) * 2014-05-04 2014-12-03 西门子公司 Earth leakage protective device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8332815D0 (en) * 1983-12-08 1984-01-18 Ashley Accessories Ltd Electrical accessories
GB2178916B (en) * 1985-06-22 1989-09-06 Ashley Accessories Ltd Detecting abnormal neutral line conditions in electrical circuits

Also Published As

Publication number Publication date
AU7868791A (en) 1991-12-31
GB2244398B (en) 1994-03-16
GB2244398A (en) 1991-11-27
WO1991019340A1 (en) 1991-12-12

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20000328