GB831484A - Improvements in or relating to electric protective systems - Google Patents

Improvements in or relating to electric protective systems

Info

Publication number
GB831484A
GB831484A GB1882456A GB1882456A GB831484A GB 831484 A GB831484 A GB 831484A GB 1882456 A GB1882456 A GB 1882456A GB 1882456 A GB1882456 A GB 1882456A GB 831484 A GB831484 A GB 831484A
Authority
GB
United Kingdom
Prior art keywords
arrangement
june
influenced
bridge circuit
windings
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
GB1882456A
Inventor
Arthur William Bowyer
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1882456A priority Critical patent/GB831484A/en
Publication of GB831484A publication Critical patent/GB831484A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • H02H7/045—Differential protection of transformers

Abstract

831,484. Protective cut-out arrangements. GENERAL ELECTRIC CO. Ltd. June 18, 1957 [June 18, 1956], No. 18824/56. Class 38 (5). [Also in Group XXXVI] In a circulating current type protective arrangement having bias and operating windings, the windings 7, 11 are arranged to influence magneto-resistive elements R1, R2 (see Group XXXVI), arranged in adjacent arms of a bridge circuit R1 . . . R4 so that under internal fault conditions the bridge circuit is unbalanced in a predetermined sense to cause operation of a polarized relay 1. The Complete Specification describes an arrangement for protecting a three-phase alternator. The Provisional Specification also refers to an impedance relay arrangement in which one of the elements is influenced by the load current and the other is influenced by the voltage.
GB1882456A 1956-06-18 1956-06-18 Improvements in or relating to electric protective systems Expired GB831484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1882456A GB831484A (en) 1956-06-18 1956-06-18 Improvements in or relating to electric protective systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1882456A GB831484A (en) 1956-06-18 1956-06-18 Improvements in or relating to electric protective systems

Publications (1)

Publication Number Publication Date
GB831484A true GB831484A (en) 1960-03-30

Family

ID=10119036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1882456A Expired GB831484A (en) 1956-06-18 1956-06-18 Improvements in or relating to electric protective systems

Country Status (1)

Country Link
GB (1) GB831484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450427A (en) * 1981-12-21 1984-05-22 General Electric Company Contactor with flux sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450427A (en) * 1981-12-21 1984-05-22 General Electric Company Contactor with flux sensor

Similar Documents

Publication Publication Date Title
GB1478527A (en) Ground fault interrupter with means protecting against a ggrounded neutral condition and with a test circuit for testing performance
GB868253A (en) Improvements in or relating to control and protective systems for electric generators
GB831484A (en) Improvements in or relating to electric protective systems
GB866031A (en) Improvements in or relating to protection devices for electric networks
GB1097809A (en) Improved circuit breaker control system
GB1389121A (en) Apparatus for disconnecting a load circuit in response to unbalanced currents
GB1254788A (en) Improvements in or relating to devices for indicating the condition of a switch
GB858646A (en) Improvements in or relating to the protection of alternating current generators
GB923292A (en) Apparatus for detecting earth faults in electric current supply systems
GB540973A (en) Improvements in or relating to electric protective systems
GB883660A (en) Improvements in and relating to electrical protective relay systems
GB981892A (en) Earth fault circuit-breaker
GB619015A (en) Improvements in or relating to the protection of direct current electrical feeders
GB789159A (en) Protective means for a group of capacitors in an electrical power system
GB741423A (en) Improvements in or relating to electric protective systems
GB938571A (en) Fault indicator for an alternating current system
GB423691A (en) Improvements in protective systems for electric coal cutter and like machinery such as used in mines
GB736087A (en) Improvements in electrical protective equipment
GB743988A (en) Improvements in and relating to electrical relays
GB805456A (en) Improvements relating to earth fault protection for electrical equipment
GB204647A (en) Improvements in or relating to electric protective systems
GB970295A (en) Improvements in or relating to earth fault protection for electrical supply systems
GB1305966A (en)
GB1010828A (en) Improvements relating to earth leakage protection
GB744542A (en) Improvements in or relating to electric protective arrangements