GB1271373A - Current leakage circuit breaker device - Google Patents

Current leakage circuit breaker device

Info

Publication number
GB1271373A
GB1271373A GB645569A GB645569A GB1271373A GB 1271373 A GB1271373 A GB 1271373A GB 645569 A GB645569 A GB 645569A GB 645569 A GB645569 A GB 645569A GB 1271373 A GB1271373 A GB 1271373A
Authority
GB
United Kingdom
Prior art keywords
rectifier
circuit
feb
circuit breaker
current leakage
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
GB645569A
Inventor
Michael John Arthur Hargrave
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 GB645569A priority Critical patent/GB1271373A/en
Publication of GB1271373A publication Critical patent/GB1271373A/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 unbalance 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 unbalance 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)

Abstract

1,271,373. Protective systems. B & R RELAYS Ltd. 2 Feb., 1970 [6 Feb., 1969], No. 6455/69. Heading H2K. [Also in Division H1] An earth leakage protective arrangement comprises a core-balance transformer 26 having its secondary winding 34 connected across the cathode and control electrode of a controlled rectifier SCR1. A trip coil 44 of a circuitbreaker (see Division H1) is connected in series with the rectifier SCR1. This series circuit is connected across a full-wave rectifier bridge D1 ... D4 in parallel with a circuit comprising capacitors C1, C2 resistor R1 and diode D6, the latter circuit keeping the rectifier SCR1 conducting when the rectifier has been triggered and the rectified current falls to zero between successive half cycles. The arrangement may be used to protect single phase circuits of three or four-wire three-phase circuits.
GB645569A 1969-02-06 1969-02-06 Current leakage circuit breaker device Expired GB1271373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB645569A GB1271373A (en) 1969-02-06 1969-02-06 Current leakage circuit breaker device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB645569A GB1271373A (en) 1969-02-06 1969-02-06 Current leakage circuit breaker device

Publications (1)

Publication Number Publication Date
GB1271373A true GB1271373A (en) 1972-04-19

Family

ID=9814789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB645569A Expired GB1271373A (en) 1969-02-06 1969-02-06 Current leakage circuit breaker device

Country Status (1)

Country Link
GB (1) GB1271373A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320409A1 (en) * 1987-12-10 1989-06-14 Merlin Gerin Static release with external supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320409A1 (en) * 1987-12-10 1989-06-14 Merlin Gerin Static release with external supply
FR2624646A1 (en) * 1987-12-10 1989-06-16 Merlin Gerin

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