FR2390841A1 - Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor - Google Patents

Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor

Info

Publication number
FR2390841A1
FR2390841A1 FR7714566A FR7714566A FR2390841A1 FR 2390841 A1 FR2390841 A1 FR 2390841A1 FR 7714566 A FR7714566 A FR 7714566A FR 7714566 A FR7714566 A FR 7714566A FR 2390841 A1 FR2390841 A1 FR 2390841A1
Authority
FR
France
Prior art keywords
circuit
inductor
capacitor
earth fault
fault protection
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.)
Granted
Application number
FR7714566A
Other languages
French (fr)
Other versions
FR2390841B1 (en
Inventor
Jean Morin
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.)
Societe dAppareillage Electrique SAPAREL SA
Original Assignee
Societe dAppareillage Electrique SAPAREL SA
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 Societe dAppareillage Electrique SAPAREL SA filed Critical Societe dAppareillage Electrique SAPAREL SA
Priority to FR7714566A priority Critical patent/FR2390841A1/en
Publication of FR2390841A1 publication Critical patent/FR2390841A1/en
Application granted granted Critical
Publication of FR2390841B1 publication Critical patent/FR2390841B1/fr
Granted 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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

Landscapes

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

Abstract

The protection circuit, for protecting against effects caused by earth faults, consists of a transformer with a secondary winding (the primary is the line being monitored) and a release coil. The secondary and release coil form a release circuit. The release circuit contains a capacitor in series on in parallel with the secondary and release coil (which themselves may be in series or in parallel). A saturatable inductor is in series with both the release coil and the secondary or with just the release coil.
FR7714566A 1977-05-12 1977-05-12 Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor Granted FR2390841A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7714566A FR2390841A1 (en) 1977-05-12 1977-05-12 Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7714566A FR2390841A1 (en) 1977-05-12 1977-05-12 Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor

Publications (2)

Publication Number Publication Date
FR2390841A1 true FR2390841A1 (en) 1978-12-08
FR2390841B1 FR2390841B1 (en) 1980-01-04

Family

ID=9190721

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714566A Granted FR2390841A1 (en) 1977-05-12 1977-05-12 Earth fault protection circuit - has monitoring transformer and tripping coil in circuit contg. capacitor and inductor

Country Status (1)

Country Link
FR (1) FR2390841A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523967A1 (en) * 1995-06-30 1997-01-02 Kopp Heinrich Ag Earth current circuit-breaker for insulation monitoring of electric circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523967A1 (en) * 1995-06-30 1997-01-02 Kopp Heinrich Ag Earth current circuit-breaker for insulation monitoring of electric circuits

Also Published As

Publication number Publication date
FR2390841B1 (en) 1980-01-04

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Legal Events

Date Code Title Description
ST Notification of lapse
ST Notification of lapse