GB2021337B - Electrical protection device - Google Patents

Electrical protection device

Info

Publication number
GB2021337B
GB2021337B GB7917255A GB7917255A GB2021337B GB 2021337 B GB2021337 B GB 2021337B GB 7917255 A GB7917255 A GB 7917255A GB 7917255 A GB7917255 A GB 7917255A GB 2021337 B GB2021337 B GB 2021337B
Authority
GB
United Kingdom
Prior art keywords
protection device
electrical protection
electrical
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.)
Expired
Application number
GB7917255A
Other versions
GB2021337A (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.)
LAPROM CORP NV
Original Assignee
LAPROM CORP NV
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 LAPROM CORP NV filed Critical LAPROM CORP NV
Publication of GB2021337A publication Critical patent/GB2021337A/en
Application granted granted Critical
Publication of GB2021337B publication Critical patent/GB2021337B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • 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)
  • Breakers (AREA)
GB7917255A 1978-05-23 1979-05-17 Electrical protection device Expired GB2021337B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH558878 1978-05-23

Publications (2)

Publication Number Publication Date
GB2021337A GB2021337A (en) 1979-11-28
GB2021337B true GB2021337B (en) 1982-06-03

Family

ID=4296096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917255A Expired GB2021337B (en) 1978-05-23 1979-05-17 Electrical protection device

Country Status (7)

Country Link
JP (1) JPS5523787A (en)
AU (1) AU4719479A (en)
DE (1) DE2920287A1 (en)
FR (1) FR2426973A1 (en)
GB (1) GB2021337B (en)
NL (1) NL7904040A (en)
SE (1) SE7904447L (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338820A1 (en) * 1983-10-26 1985-05-15 Robert Krups Stiftung & Co KG, 5650 Solingen ELECTRICAL CONNECTION DEVICE, LIKE SOCKET, WITH FAULT CURRENT SWITCH FOR ELECTRICAL CONSUMERS
JPS60106404A (en) * 1983-11-15 1985-06-11 松下電工株式会社 Hair curler
JPS60204655A (en) * 1984-03-30 1985-10-16 ニチアス株式会社 Xonotlite forming material
AT388625B (en) * 1987-11-19 1989-08-10 Bremel Hans PROTECTIVE DEVICE FOR ELECTRICAL POWER SUPPLIES, IN PARTICULAR HAND DEVICES
IL88704A (en) * 1988-12-16 1992-02-16 Solar Wide Ind Ltd Method and apparatus for protecting electrical systems
IT1231846B (en) * 1989-09-14 1992-01-14 Electrical Safety Company S R ELECTRONIC SAFETY, ANTI-PULDING SYSTEM, FOR MACHINES AND ELECTRICAL SYSTEMS.
GB2296609B (en) * 1994-12-08 1998-10-28 Darren John Spreyer The double fuse spur
GB9507574D0 (en) * 1995-04-12 1995-05-31 Itt Ind Ltd Electrical connector
DE19818022A1 (en) * 1998-04-22 1999-10-28 Siemens Ag Failure protection for a protective switching device
JP4942771B2 (en) * 2006-02-23 2012-05-30 シーメンス アクチエンゲゼルシヤフト Overcurrent switchgear and bridge device
DE102019103621A1 (en) * 2019-02-14 2020-08-20 Doepke Schaltgeräte GmbH Device for protection against electric shock or for protection against overcurrent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053639B (en) * 1956-08-13 1959-03-26 August Stuke Circuit arrangement for the protection of electrical systems
BE627217A (en) * 1962-01-26
FR1438209A (en) * 1964-06-17 1966-05-13 High differential sensitivity safety relay with remote action on a downstream protection device
CH519782A (en) * 1970-11-20 1972-02-29 Etem Ets De Tech Mod Differential circuit breaker
DE2360037A1 (en) * 1973-12-01 1975-06-12 Danfoss As SAFETY CIRCUIT FOR AN ELECTRICAL DEVICE
FR2294535A1 (en) * 1974-12-10 1976-07-09 Lewiner Jacques IMPROVEMENTS TO RELAY TYPE CONTROL DEVICES

Also Published As

Publication number Publication date
GB2021337A (en) 1979-11-28
FR2426973A1 (en) 1979-12-21
JPS5523787A (en) 1980-02-20
DE2920287A1 (en) 1979-11-29
AU4719479A (en) 1979-11-29
NL7904040A (en) 1979-11-27
SE7904447L (en) 1979-11-24

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Legal Events

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