BE659684A - - Google Patents

Info

Publication number
BE659684A
BE659684A BE659684DA BE659684A BE 659684 A BE659684 A BE 659684A BE 659684D A BE659684D A BE 659684DA BE 659684 A BE659684 A BE 659684A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE659684A publication Critical patent/BE659684A/xx

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
    • H02H3/40—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 ratio of voltage and current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0038—Details of emergency protective circuit arrangements concerning the connection of the detecting means, e.g. for reducing their number

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Amplifiers (AREA)
  • Measurement Of Current Or Voltage (AREA)
BE659684D 1964-02-13 1965-02-12 BE659684A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6014/64A GB1090901A (en) 1964-02-13 1964-02-13 Protective relay apparatus

Publications (1)

Publication Number Publication Date
BE659684A true BE659684A (fr) 1965-05-28

Family

ID=9806873

Family Applications (1)

Application Number Title Priority Date Filing Date
BE659684D BE659684A (fr) 1964-02-13 1965-02-12

Country Status (6)

Country Link
US (1) US3340435A (fr)
BE (1) BE659684A (fr)
CH (1) CH439460A (fr)
DE (1) DE1463133A1 (fr)
GB (1) GB1090901A (fr)
SE (1) SE301342B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1142783A (en) * 1965-04-23 1969-02-12 Reyrolle A & Co Ltd Improvements relating to protective arrangements including electric level-responsive circuits
US3440492A (en) * 1966-09-01 1969-04-22 Itt Voltage regulator and failure circuits
US3441802A (en) * 1966-12-20 1969-04-29 Powercon Inc Voltage responsive relay type quantizer for monitoring plural sources
US3497772A (en) * 1967-01-18 1970-02-24 Westinghouse Electric Corp Pilot wire protective arrangement for alternating current system wherein relay operating and restraint signals are derived during half cycles of opposite polarities
CN115436687B (zh) * 2022-08-31 2023-06-16 重庆泊津科技有限公司 站用变压器接地电流同步合成方法及系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2608606A (en) * 1950-06-29 1952-08-26 Westinghouse Electric Corp Bus differential protection
US3108205A (en) * 1958-05-02 1963-10-22 Burroughs Corp Voltage sensing control circuit
CA644642A (en) * 1958-10-27 1962-07-10 F. Schuh Niles Undervoltage sensing circuit
US3037151A (en) * 1959-01-02 1962-05-29 Rca Corp Voltage monitoring apparatus
GB981752A (en) * 1960-06-09 1965-01-27 English Electric Co Ltd Improvements in or relating to electrical protective relays
US3167685A (en) * 1961-05-08 1965-01-26 Gen Precision Inc Computer protection circuit

Also Published As

Publication number Publication date
GB1090901A (en) 1967-11-15
CH439460A (fr) 1967-07-15
DE1463133A1 (de) 1968-12-12
SE301342B (fr) 1968-06-04
US3340435A (en) 1967-09-05

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