GB2311177B - Residual current devices - Google Patents

Residual current devices

Info

Publication number
GB2311177B
GB2311177B GB9704006A GB9704006A GB2311177B GB 2311177 B GB2311177 B GB 2311177B GB 9704006 A GB9704006 A GB 9704006A GB 9704006 A GB9704006 A GB 9704006A GB 2311177 B GB2311177 B GB 2311177B
Authority
GB
United Kingdom
Prior art keywords
residual current
current devices
devices
residual
current
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.)
Expired - Lifetime
Application number
GB9704006A
Other versions
GB9704006D0 (en
GB2311177A (en
Inventor
Paul Michael Weaver
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.)
Crabtree Electrical Industries Ltd
Original Assignee
Crabtree Electrical Industries 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
Priority claimed from GBGB9605307.9A external-priority patent/GB9605307D0/en
Application filed by Crabtree Electrical Industries Ltd filed Critical Crabtree Electrical Industries Ltd
Publication of GB9704006D0 publication Critical patent/GB9704006D0/en
Publication of GB2311177A publication Critical patent/GB2311177A/en
Priority claimed from EP98300497A external-priority patent/EP0931883A1/en
Application granted granted Critical
Publication of GB2311177B publication Critical patent/GB2311177B/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
    • H02H3/338—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
GB9704006A 1996-03-13 1997-02-26 Residual current devices Expired - Lifetime GB2311177B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9605307.9A GB9605307D0 (en) 1996-03-13 1996-03-13 Residual current devices
EP98300497A EP0931883A1 (en) 1996-07-16 1998-01-26 Improvements in and relating to cisterns

Publications (3)

Publication Number Publication Date
GB9704006D0 GB9704006D0 (en) 1997-04-16
GB2311177A GB2311177A (en) 1997-09-17
GB2311177B true GB2311177B (en) 2000-08-02

Family

ID=26151114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9704006A Expired - Lifetime GB2311177B (en) 1996-03-13 1997-02-26 Residual current devices

Country Status (1)

Country Link
GB (1) GB2311177B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE20010271A1 (en) * 2000-03-22 2001-10-03 Shakira Ltd Residual Current Device
GB2377834B (en) * 2001-05-31 2003-09-17 Shakira Ltd Residual current device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154450A1 (en) * 1984-02-23 1985-09-11 Delta Electrical (Holdings) Limited Earth leakage protective circuit
GB2204199A (en) * 1987-05-02 1988-11-02 Ashley Accessories Ltd Residual current circuit breaker
GB2224404A (en) * 1988-10-25 1990-05-02 Shakira Ltd Residual current device with missing neutral protection
GB2295284A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154450A1 (en) * 1984-02-23 1985-09-11 Delta Electrical (Holdings) Limited Earth leakage protective circuit
GB2204199A (en) * 1987-05-02 1988-11-02 Ashley Accessories Ltd Residual current circuit breaker
GB2224404A (en) * 1988-10-25 1990-05-02 Shakira Ltd Residual current device with missing neutral protection
GB2295284A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Circuit breaker

Also Published As

Publication number Publication date
GB9704006D0 (en) 1997-04-16
GB2311177A (en) 1997-09-17

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20170225