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FR2337933A1 - High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification - Google Patents

High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification

Info

Publication number
FR2337933A1
FR2337933A1 FR7600411A FR7600411A FR2337933A1 FR 2337933 A1 FR2337933 A1 FR 2337933A1 FR 7600411 A FR7600411 A FR 7600411A FR 7600411 A FR7600411 A FR 7600411A FR 2337933 A1 FR2337933 A1 FR 2337933A1
Authority
FR
France
Prior art keywords
pinion
relay
acts
high sensitivity
vectorial sum
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
FR7600411A
Other languages
French (fr)
Other versions
FR2337933B1 (en
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.)
Legrand SA
Original Assignee
Legrand 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 Legrand SA filed Critical Legrand SA
Priority to FR7600411A priority Critical patent/FR2337933A1/en
Publication of FR2337933A1 publication Critical patent/FR2337933A1/en
Application granted granted Critical
Publication of FR2337933B1 publication Critical patent/FR2337933B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer

Landscapes

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

Abstract

The high sensitivity differential relay acts on a given threshold level of current which is the vectorial sum of circulating currents in the associated distribution network. The relay is intended to provide protection against overloads of about 30mA to 50mA, i.e. that level likely to cause electrocution. The threshold detector is two winding soft iron cored relay which operates through a series of pinions providing amplification of the initial relay armature movement to the contactor actually breaking the supply circuit. The speed of response and sensitivity to overload duration is governed by the pinion inertia. Overall geometry is minimised by having only two pinion planes.
FR7600411A 1976-01-09 1976-01-09 High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification Granted FR2337933A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7600411A FR2337933A1 (en) 1976-01-09 1976-01-09 High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7600411A FR2337933A1 (en) 1976-01-09 1976-01-09 High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification

Publications (2)

Publication Number Publication Date
FR2337933A1 true FR2337933A1 (en) 1977-08-05
FR2337933B1 FR2337933B1 (en) 1980-11-07

Family

ID=9167735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7600411A Granted FR2337933A1 (en) 1976-01-09 1976-01-09 High sensitivity differential relay - acts on the vectorial sum of network currents and has pinion magnification

Country Status (1)

Country Link
FR (1) FR2337933A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196950A1 (en) * 1985-03-08 1986-10-08 Electrotecnica F. De Roda, S.A. Pawl for a fault current protective switch
FR2628261A1 (en) * 1988-03-02 1989-09-08 Legrand Sa Circuit breaker with quick-make switching action - moving contact is positioned by spring linkage, compressed against mid-point checks which causes movement when latter are overcome
FR2640423A1 (en) * 1988-12-14 1990-06-15 Merlin Gerin CONTROL MECHANISM OF A MULTIPOLAR DIFFERENTIAL SWITCH WITH ROTATING SWITCHING BAR
DE4216248A1 (en) * 1992-05-16 1993-11-18 Abb Patent Gmbh Receptacle for a transformer for a residual current circuit breaker and transformer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196950A1 (en) * 1985-03-08 1986-10-08 Electrotecnica F. De Roda, S.A. Pawl for a fault current protective switch
FR2628261A1 (en) * 1988-03-02 1989-09-08 Legrand Sa Circuit breaker with quick-make switching action - moving contact is positioned by spring linkage, compressed against mid-point checks which causes movement when latter are overcome
FR2640423A1 (en) * 1988-12-14 1990-06-15 Merlin Gerin CONTROL MECHANISM OF A MULTIPOLAR DIFFERENTIAL SWITCH WITH ROTATING SWITCHING BAR
EP0377385A1 (en) * 1988-12-14 1990-07-11 Merlin Gerin Operating mechanism for a multiple fault-current protective switch with a rotary crossbar
EP0602024A2 (en) * 1988-12-14 1994-06-15 Schneider Electric Sa Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar
EP0602024A3 (en) * 1988-12-14 1994-09-14 Merlin Gerin Operating mechanism for a multipolar fault-current protective switch with a rotary crossbar.
DE4216248A1 (en) * 1992-05-16 1993-11-18 Abb Patent Gmbh Receptacle for a transformer for a residual current circuit breaker and transformer
DE4216248C2 (en) * 1992-05-16 2000-05-18 Abb Patent Gmbh Receptacle for a converter for a residual current circuit breaker and converter

Also Published As

Publication number Publication date
FR2337933B1 (en) 1980-11-07

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Legal Events

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ST Notification of lapse
CL Concession to grant licenses