TREA

involving comparison of quantities derived from a plurality of phases

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  • CPC
  • H02H3/307
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Parent Industries

HELECTRICITY H02Electric power H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection

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H02H3/307involving comparison of quantities derived from a plurality of phases
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Patents Grantslast 30 patents

  • Information Patent Grant

    Current source converter differential protection method and relay p...
    • Patent number 9,584,007
    • Issue date Feb 28, 2017
    • NR ELECTRIC CO., LTD.
    • Qixue Zhang
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    System, apparatus and method for compensating the sensitivity of a...
    • Patent number 7,660,088
    • Issue date Feb 9, 2010
    • Schweitzer Engineering Laboratories, Inc.
    • Joseph B. Mooney
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Apparatus and method for protecting synchronous generators against...
    • Patent number 6,661,207
    • Issue date Dec 9, 2003
    • Siemens Westinghouse Power Corporation
    • Robert J. Nelson
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Line differential protection system for a power transmission line
    • Patent number 6,590,397
    • Issue date Jul 8, 2003
    • Schweitzer Engineering Laboratories, Inc.
    • Jeffrey B. Roberts
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Line differential protection system for a power transmission line
    • Patent number 6,518,767
    • Issue date Feb 11, 2003
    • Schweitzer Engineering Laboratories, Inc.
    • Jeffrey B. Roberts
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Delta filter with an adaptive time window for protective relays
    • Patent number 6,417,791
    • Issue date Jul 9, 2002
    • Schweitzer Engineering Laboratories, Inc.
    • Gabriel Benmouyal
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Three terminal current differential protective relay
    • Patent number 4,538,195
    • Issue date Aug 27, 1985
    • Westinghouse Electric Corp.
    • Walter A. Elmore
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Pilot wire relay protection system for electrical distribution netw...
    • Patent number 4,295,175
    • Issue date Oct 13, 1981
    • General Electric Company
    • Daniel E. Cordray
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Differential current protective device
    • Patent number 3,974,423
    • Issue date Aug 10, 1976
    • Evgeny Mefodievich Ulyanitsky
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Segregated phase comparison system
    • Patent number 3,963,964
    • Issue date Jun 15, 1976
    • Westinghouse Electric Corporation
    • Kalyan K. Mustaphi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3350578
    • Patent number 3,350,578
    • Issue date Oct 31, 1967
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3273017
    • Patent number 3,273,017
    • Issue date Sep 13, 1966
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3225256
    • Patent number 3,225,256
    • Issue date Dec 21, 1965
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3223891
    • Patent number 3,223,891
    • Issue date Dec 14, 1965
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3148309
    • Patent number 3,148,309
    • Issue date Sep 8, 1964
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2917674
    • Patent number 2,917,674
    • Issue date Dec 15, 1959
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2777093
    • Patent number 2,777,093
    • Issue date Jan 8, 1957
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2710368
    • Patent number 2,710,368
    • Issue date Jun 7, 1955
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2696573
    • Patent number 2,696,573
    • Issue date Dec 7, 1954
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2601354
    • Patent number 2,601,354
    • Issue date Jun 24, 1952
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2586353
    • Patent number 2,586,353
    • Issue date Feb 19, 1952
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2531146
    • Patent number 2,531,146
    • Issue date Nov 21, 1950
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2406411
    • Patent number 2,406,411
    • Issue date Aug 27, 1946
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2307500
    • Patent number 2,307,500
    • Issue date Jan 5, 1943
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2303429
    • Patent number 2,303,429
    • Issue date Dec 1, 1942
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2296784
    • Patent number 2,296,784
    • Issue date Sep 22, 1942
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2273588
    • Patent number 2,273,588
    • Issue date Feb 17, 1942
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2242950
    • Patent number 2,242,950
    • Issue date May 20, 1941
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2213294
    • Patent number 2,213,294
    • Issue date Sep 3, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2183646
    • Patent number 2,183,646
    • Issue date Dec 19, 1939
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents