GB592468A - Improvements in earth leakage trip devices for electric circuits - Google Patents

Improvements in earth leakage trip devices for electric circuits

Info

Publication number
GB592468A
GB592468A GB1220045A GB1220045A GB592468A GB 592468 A GB592468 A GB 592468A GB 1220045 A GB1220045 A GB 1220045A GB 1220045 A GB1220045 A GB 1220045A GB 592468 A GB592468 A GB 592468A
Authority
GB
United Kingdom
Prior art keywords
earth leakage
electric circuits
leakage trip
trip devices
earth
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
GB1220045A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction Co Ltd
Filing date
Publication date
Application filed by Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Publication of GB592468A publication Critical patent/GB592468A/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

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Abstract

592,468. Protective cut - out systems. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., and HUNTER, P. V. May 15, 1945, No. 12200. [Class 38 (v)] An earth - leakage trip device comprising a transformer d with two d i f f e rentiallywound primary windings e, has its third winding f connected through a rectifier g to a sensitive D.C. electro-mechanical relay i adapted to close a contact and open the circuit-breaker c, which may also have an overload trip means.
GB1220045A 1945-05-15 Improvements in earth leakage trip devices for electric circuits Expired GB592468A (en)

Publications (1)

Publication Number Publication Date
GB592468A true GB592468A (en) 1947-09-18

Family

ID=1716160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1220045A Expired GB592468A (en) 1945-05-15 Improvements in earth leakage trip devices for electric circuits

Country Status (1)

Country Link
GB (1) GB592468A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042967A (en) * 1975-10-28 1977-08-16 Yujiro Yamamoto Ground fault sensor
FR2502393A1 (en) * 1981-03-19 1982-09-24 Etude Et Realisa De Disjoncteu FAULT CURRENT DETECTION DEVICE
EP0113026A1 (en) * 1982-12-02 1984-07-11 Siemens Aktiengesellschaft Earth leakage circuit breaker

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042967A (en) * 1975-10-28 1977-08-16 Yujiro Yamamoto Ground fault sensor
FR2502393A1 (en) * 1981-03-19 1982-09-24 Etude Et Realisa De Disjoncteu FAULT CURRENT DETECTION DEVICE
DE3113292A1 (en) * 1981-03-19 1982-09-30 Serd S.A., 67024 Strasbourg Residual current device
EP0113026A1 (en) * 1982-12-02 1984-07-11 Siemens Aktiengesellschaft Earth leakage circuit breaker

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