FR1556459A - - Google Patents

Info

Publication number
FR1556459A
FR1556459A FR1556459DA FR1556459A FR 1556459 A FR1556459 A FR 1556459A FR 1556459D A FR1556459D A FR 1556459DA FR 1556459 A FR1556459 A FR 1556459A
Authority
FR
France
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
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
Application granted granted Critical
Publication of FR1556459A publication Critical patent/FR1556459A/fr
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
    • H02H3/24—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 undervoltage or no-voltage
    • H02H3/253—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 undervoltage or no-voltage for multiphase applications, e.g. phase interruption
FR1556459D 1967-02-04 1968-01-10 Expired FR1556459A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0032926 1967-02-04

Publications (1)

Publication Number Publication Date
FR1556459A true FR1556459A (fr) 1969-02-07

Family

ID=7204609

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1556459D Expired FR1556459A (fr) 1967-02-04 1968-01-10

Country Status (5)

Country Link
US (1) US3479583A (fr)
JP (1) JPS4540875B1 (fr)
DE (1) DE1588324A1 (fr)
FR (1) FR1556459A (fr)
GB (1) GB1206365A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379317A (en) * 1981-04-27 1983-04-05 Westinghouse Electric Corp. Solid-state load protection system having loss of phase sensing
US5014153A (en) * 1989-02-01 1991-05-07 Basler Electric Company Transformer differential relay
WO1996024070A1 (fr) * 1995-01-30 1996-08-08 Landis & Gyr Utilities Services, Inc. Procede de dimensionnement de transformateurs dans un service d'approvisionnement en electricite
DE102007041248B4 (de) * 2007-08-30 2015-04-09 Abb Ag Vorrichtung zur Erkennung einer Lastunsymmetrie in einem Drehstromnetz

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA642851A (en) * 1959-01-15 1962-06-12 F. Karlicek Robert Voltage unbalance detector apparatus
US3184644A (en) * 1959-04-20 1965-05-18 Electric Products Engineering Polyphase electroresponsive apparatus
US3013185A (en) * 1959-09-08 1961-12-12 Forsyth Engineering Company Phase unbalance protective relay
US3160787A (en) * 1959-11-12 1964-12-08 Westinghouse Electric Corp Restraint operation relay employing zener diode
US3160786A (en) * 1959-11-23 1964-12-08 Electric Products Engineering Polyphase voltage balance detector
US3248610A (en) * 1962-07-02 1966-04-26 Jack C Faglie Polyphase unbalance detection apparatus

Also Published As

Publication number Publication date
GB1206365A (en) 1970-09-23
JPS4540875B1 (fr) 1970-12-22
US3479583A (en) 1969-11-18
DE1588324A1 (de) 1970-05-21

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Legal Events

Date Code Title Description
ST Notification of lapse