GB1145857A - Improvements in or relating to electrical circuit breakers - Google Patents

Improvements in or relating to electrical circuit breakers

Info

Publication number
GB1145857A
GB1145857A GB4928465A GB4928465A GB1145857A GB 1145857 A GB1145857 A GB 1145857A GB 4928465 A GB4928465 A GB 4928465A GB 4928465 A GB4928465 A GB 4928465A GB 1145857 A GB1145857 A GB 1145857A
Authority
GB
United Kingdom
Prior art keywords
circuit
breaker
secondary winding
earth leakage
relating
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
GB4928465A
Inventor
Michael John Arthur Hargrave
Edmund Morton Butterworth
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.)
B & R Relays Ltd
Original Assignee
B & R Relays 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 B & R Relays Ltd filed Critical B & R Relays Ltd
Priority to GB4928465A priority Critical patent/GB1145857A/en
Publication of GB1145857A publication Critical patent/GB1145857A/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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • 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)
  • Breakers (AREA)

Abstract

1,145,857. Earth leakage circuit-breakers. B. & R. RELAYS Ltd. 13 Feb., 1967 [19 Nov., 1965], No. 49284/65. Heading H1N. [Also in Division H2] An earth leakage protective device comprises a circuit-breaker having a trip coil 35 controlled by a sealed magnetic reed relay 32, 33 which is energized when current is induced in the secondary winding 31 of a core-balance transformer 26. The circuit-breaker has an operating lever 44, which through toggle linkage (not shown) actuates bridging movable contact assemblies 28. A transistor amplifier, Fig. 12 (not shown) may be connected between the secondary winding 31 and the operating coil 32 of the reed relay. This amplifier may be accommodated in the space between mounting plates 81, 82. A test switch 37 is provided. The circuit-breaker may control single or threephase circuits.
GB4928465A 1965-11-19 1965-11-19 Improvements in or relating to electrical circuit breakers Expired GB1145857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4928465A GB1145857A (en) 1965-11-19 1965-11-19 Improvements in or relating to electrical circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4928465A GB1145857A (en) 1965-11-19 1965-11-19 Improvements in or relating to electrical circuit breakers

Publications (1)

Publication Number Publication Date
GB1145857A true GB1145857A (en) 1969-03-19

Family

ID=10451808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4928465A Expired GB1145857A (en) 1965-11-19 1965-11-19 Improvements in or relating to electrical circuit breakers

Country Status (1)

Country Link
GB (1) GB1145857A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530073A1 (en) * 1982-07-12 1984-01-13 Merlin Gerin BIPOLAR DIFFERENTIAL SWITCH
GB2295276A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Leakage-responsive circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530073A1 (en) * 1982-07-12 1984-01-13 Merlin Gerin BIPOLAR DIFFERENTIAL SWITCH
EP0099786A1 (en) * 1982-07-12 1984-02-01 Merlin Gerin Two-phase differential circuit breaker
GB2295276A (en) * 1994-11-15 1996-05-22 Matsushita Electric Works Ltd Leakage-responsive circuit breaker
GB2295276B (en) * 1994-11-15 1998-10-14 Matsushita Electric Works Ltd Leakage-responsive circuit breaker

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