GB2108339B - Electric protective circuits - Google Patents

Electric protective circuits

Info

Publication number
GB2108339B
GB2108339B GB08219086A GB8219086A GB2108339B GB 2108339 B GB2108339 B GB 2108339B GB 08219086 A GB08219086 A GB 08219086A GB 8219086 A GB8219086 A GB 8219086A GB 2108339 B GB2108339 B GB 2108339B
Authority
GB
United Kingdom
Prior art keywords
protective circuits
electric protective
electric
circuits
protective
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
GB08219086A
Other versions
GB2108339A (en
Inventor
Leslie Charles Miller
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB08219086A priority Critical patent/GB2108339B/en
Publication of GB2108339A publication Critical patent/GB2108339A/en
Application granted granted Critical
Publication of GB2108339B publication Critical patent/GB2108339B/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
    • H02H3/26—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB08219086A 1981-07-07 1982-07-01 Electric protective circuits Expired GB2108339B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08219086A GB2108339B (en) 1981-07-07 1982-07-01 Electric protective circuits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8120952 1981-07-07
GB08219086A GB2108339B (en) 1981-07-07 1982-07-01 Electric protective circuits

Publications (2)

Publication Number Publication Date
GB2108339A GB2108339A (en) 1983-05-11
GB2108339B true GB2108339B (en) 1985-08-07

Family

ID=26280049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08219086A Expired GB2108339B (en) 1981-07-07 1982-07-01 Electric protective circuits

Country Status (1)

Country Link
GB (1) GB2108339B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135542B (en) * 1983-02-19 1986-11-05 Ashley Accessories Ltd Earth leakage circuit breaker
GB8331724D0 (en) * 1983-11-28 1984-01-04 B & R Electrical Prod Ltd Reverse polarity auto-tripping system
GB8332815D0 (en) * 1983-12-08 1984-01-18 Ashley Accessories Ltd Electrical accessories
GB2162003B (en) * 1984-05-05 1988-03-02 Ashley Accessories Ltd Earth leakage circuit breakers
US4598331A (en) * 1984-07-30 1986-07-01 Technology Research Corporation Ground fault current interrupter circuit with open neutral and ground lead protection
GB2162708B (en) * 1984-07-27 1988-12-14 Technology Res Corp Ground fault current interrupter circuit with open neutral, and ground lead protection
GB2177859B (en) * 1985-07-19 1989-07-26 Mk Electric Ltd Protection apparatus for use in a power supply circuit
GB9403463D0 (en) * 1994-02-23 1994-04-13 Chua Chua G An electrical earth leakage circuit

Also Published As

Publication number Publication date
GB2108339A (en) 1983-05-11

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Legal Events

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