GB2006555B - Electrical system fault relay - Google Patents

Electrical system fault relay

Info

Publication number
GB2006555B
GB2006555B GB7841193A GB7841193A GB2006555B GB 2006555 B GB2006555 B GB 2006555B GB 7841193 A GB7841193 A GB 7841193A GB 7841193 A GB7841193 A GB 7841193A GB 2006555 B GB2006555 B GB 2006555B
Authority
GB
United Kingdom
Prior art keywords
electrical system
system fault
fault relay
relay
electrical
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
Application number
GB7841193A
Other versions
GB2006555A (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.)
ELECTRICAL PROTECTION CO Ltd
Original Assignee
ELECTRICAL PROTECTION CO 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 ELECTRICAL PROTECTION CO Ltd filed Critical ELECTRICAL PROTECTION CO Ltd
Publication of GB2006555A publication Critical patent/GB2006555A/en
Application granted granted Critical
Publication of GB2006555B publication Critical patent/GB2006555B/en
Expired 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
    • H02H3/02—Details
    • H02H3/027—Details with automatic disconnection after a predetermined time
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/06—Arrangements for supplying operative power
    • H02H1/063—Arrangements for supplying operative power primary power being supplied by fault current
    • 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)
  • Emergency Protection Circuit Devices (AREA)
GB7841193A 1977-10-21 1978-10-19 Electrical system fault relay Expired GB2006555B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA00776276A ZA776276B (en) 1977-10-21 1977-10-21 Improvements in and relating to earth fault relays

Publications (2)

Publication Number Publication Date
GB2006555A GB2006555A (en) 1979-05-02
GB2006555B true GB2006555B (en) 1982-04-07

Family

ID=25572172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7841193A Expired GB2006555B (en) 1977-10-21 1978-10-19 Electrical system fault relay

Country Status (5)

Country Link
AU (1) AU530808B2 (en)
GB (1) GB2006555B (en)
MW (1) MW3178A1 (en)
NZ (1) NZ188723A (en)
ZA (1) ZA776276B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8616833D0 (en) * 1986-07-10 1986-08-20 Delta Electrical Holdings Earth leakage protective circuit
DE102020216414A1 (en) 2020-12-21 2022-06-23 Siemens Aktiengesellschaft RCDs and procedures

Also Published As

Publication number Publication date
NZ188723A (en) 1981-07-13
MW3178A1 (en) 1980-03-12
AU4091578A (en) 1980-04-24
GB2006555A (en) 1979-05-02
ZA776276B (en) 1978-12-27
AU530808B2 (en) 1983-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee