ES266639A1 - Differential current relay - Google Patents

Differential current relay

Info

Publication number
ES266639A1
ES266639A1 ES0266639A ES266639A ES266639A1 ES 266639 A1 ES266639 A1 ES 266639A1 ES 0266639 A ES0266639 A ES 0266639A ES 266639 A ES266639 A ES 266639A ES 266639 A1 ES266639 A1 ES 266639A1
Authority
ES
Spain
Prior art keywords
circuit
differential current
harmonic
current relay
primary winding
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
ES0266639A
Other languages
Spanish (es)
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.)
Rheinmetall Air Defence AG
Maschinenfabrik Oerlikon AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Maschinenfabrik Oerlikon AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG, Maschinenfabrik Oerlikon AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Publication of ES266639A1 publication Critical patent/ES266639A1/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A relay device for differential current, secure against circuitry, having a trip circuit, a compensation circuit and a holding circuit, the latter preferably conducting the second harmonic of the differential current, characterized in that the preferred circuit for the second harmonic is in series with the primary winding of an intermediate current converter and because this primary winding has an outlet that is connected to another circuit that blocks the second harmonic. (Machine-translation by Google Translate, not legally binding)
ES0266639A 1960-05-05 1961-04-17 Differential current relay Expired ES266639A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH516160A CH383480A (en) 1960-05-05 1960-05-05 Switch-on safe differential current relay circuit

Publications (1)

Publication Number Publication Date
ES266639A1 true ES266639A1 (en) 1961-07-01

Family

ID=4288939

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0266639A Expired ES266639A1 (en) 1960-05-05 1961-04-17 Differential current relay

Country Status (4)

Country Link
BE (1) BE603379A (en)
CH (1) CH383480A (en)
ES (1) ES266639A1 (en)
GB (1) GB942007A (en)

Also Published As

Publication number Publication date
BE603379A (en) 1961-09-01
CH383480A (en) 1964-10-31
GB942007A (en) 1963-11-20

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