GB2159354B - Electrical protective devices - Google Patents

Electrical protective devices

Info

Publication number
GB2159354B
GB2159354B GB08408586A GB8408586A GB2159354B GB 2159354 B GB2159354 B GB 2159354B GB 08408586 A GB08408586 A GB 08408586A GB 8408586 A GB8408586 A GB 8408586A GB 2159354 B GB2159354 B GB 2159354B
Authority
GB
United Kingdom
Prior art keywords
protective devices
electrical protective
electrical
devices
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
GB08408586A
Other versions
GB8408586D0 (en
GB2159354A (en
Inventor
John Whitehurst
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.)
BIRMID QUALCAST
Original Assignee
BIRMID QUALCAST
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 BIRMID QUALCAST filed Critical BIRMID QUALCAST
Priority to GB08408586A priority Critical patent/GB2159354B/en
Publication of GB8408586D0 publication Critical patent/GB8408586D0/en
Publication of GB2159354A publication Critical patent/GB2159354A/en
Application granted granted Critical
Publication of GB2159354B publication Critical patent/GB2159354B/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
    • 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
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
GB08408586A 1984-04-03 1984-04-03 Electrical protective devices Expired GB2159354B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08408586A GB2159354B (en) 1984-04-03 1984-04-03 Electrical protective devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08408586A GB2159354B (en) 1984-04-03 1984-04-03 Electrical protective devices

Publications (3)

Publication Number Publication Date
GB8408586D0 GB8408586D0 (en) 1984-05-16
GB2159354A GB2159354A (en) 1985-11-27
GB2159354B true GB2159354B (en) 1987-10-28

Family

ID=10559109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08408586A Expired GB2159354B (en) 1984-04-03 1984-04-03 Electrical protective devices

Country Status (1)

Country Link
GB (1) GB2159354B (en)

Families Citing this family (3)

* 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
EP0513405A1 (en) * 1991-05-11 1992-11-19 Intermacom A.G. Method and apparatus for current interruption in electrically-powered apparatus and equipment
SE543846C2 (en) * 2019-12-06 2021-08-10 Blixt Tech Ab Residual current circuit breaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1546573A (en) * 1976-10-27 1979-05-23 Univ Loughborough Electrical safety circuits
CA1156300A (en) * 1980-04-01 1983-11-01 Gordon S. Carlson Electric blanket safety circuit
US4436986A (en) * 1981-11-23 1984-03-13 Sunbeam Corporation Electric blanket safety circuit
GB2119187B (en) * 1982-04-16 1985-06-05 Standard Telephones Cables Ltd Telecommunication exchange protection

Also Published As

Publication number Publication date
GB8408586D0 (en) 1984-05-16
GB2159354A (en) 1985-11-27

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Legal Events

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

Effective date: 19940217

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960403