GB802746A - Improvements relating to earth fault protection for electrical equipment - Google Patents

Improvements relating to earth fault protection for electrical equipment

Info

Publication number
GB802746A
GB802746A GB3727155A GB3727155A GB802746A GB 802746 A GB802746 A GB 802746A GB 3727155 A GB3727155 A GB 3727155A GB 3727155 A GB3727155 A GB 3727155A GB 802746 A GB802746 A GB 802746A
Authority
GB
United Kingdom
Prior art keywords
transformer
electrical equipment
earth fault
improvements relating
fault 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
GB3727155A
Inventor
Cecil Alfred Charles Hillyer
Boys Le Feaver
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3727155A priority Critical patent/GB802746A/en
Publication of GB802746A publication Critical patent/GB802746A/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
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)

Abstract

802,746. Protective cut - out systems. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 10, 1956 [Dec. 29, 1955], No. 37271/55. Class 38 (5). An earth-leakage current transformer CT in the neutral-earth connection N, n of a transformer PT has a primary test winding T which is supplied through a voltage transformer VT and push-button PB connected between phases on the primary or (as shown) secondary side of the transformer PT, the current transformer secondary S being connected to a trip coil EC of the circuit-breaker CB.
GB3727155A 1955-12-29 1955-12-29 Improvements relating to earth fault protection for electrical equipment Expired GB802746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3727155A GB802746A (en) 1955-12-29 1955-12-29 Improvements relating to earth fault protection for electrical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3727155A GB802746A (en) 1955-12-29 1955-12-29 Improvements relating to earth fault protection for electrical equipment

Publications (1)

Publication Number Publication Date
GB802746A true GB802746A (en) 1958-10-08

Family

ID=10395111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3727155A Expired GB802746A (en) 1955-12-29 1955-12-29 Improvements relating to earth fault protection for electrical equipment

Country Status (1)

Country Link
GB (1) GB802746A (en)

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