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ES463849A1 - Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction - Google Patents

Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction

Info

Publication number
ES463849A1
ES463849A1 ES463849A ES463849A ES463849A1 ES 463849 A1 ES463849 A1 ES 463849A1 ES 463849 A ES463849 A ES 463849A ES 463849 A ES463849 A ES 463849A ES 463849 A1 ES463849 A1 ES 463849A1
Authority
ES
Spain
Prior art keywords
differential
trip
polarised
circuit
flux
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
ES463849A
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.)
Metalimphy SA
Original Assignee
Metalimphy 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 Metalimphy SA filed Critical Metalimphy SA
Publication of ES463849A1 publication Critical patent/ES463849A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Protection Of Transformers (AREA)

Abstract

The polarised differential trip is intended for safeguarding the breaking of a circuit breaker or an isolating switch. It has to normally balance coils on a closed magnet circuit with two branches, a permanent magnet, and a moving armature for closing between the two branches. The trip is exposed to a resetting force, somewhat smaller than the attractive and holding force due to the magnetic flux generated by the magnet. The coils (13, 14) are so wound on the magnetic circuit that the differential flux, generated by them in the air gap, has an opposite direction to that generated by the magnet (12). The trip enables direct current application.
ES463849A 1976-11-05 1977-11-04 Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction Expired ES463849A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7633501A FR2370354A1 (en) 1976-11-05 1976-11-05 Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction

Publications (1)

Publication Number Publication Date
ES463849A1 true ES463849A1 (en) 1978-06-16

Family

ID=9179611

Family Applications (1)

Application Number Title Priority Date Filing Date
ES463849A Expired ES463849A1 (en) 1976-11-05 1977-11-04 Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction

Country Status (4)

Country Link
DE (1) DE2749467A1 (en)
ES (1) ES463849A1 (en)
FR (1) FR2370354A1 (en)
IT (1) IT1212291B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU78012A1 (en) * 1977-08-22 1979-04-09 Gath N FAULT CIRCUIT BREAKER
IT1226237B (en) * 1988-07-08 1990-12-27 Bassani Spa RELAY TYPE ELECTROMAGNETIC ACTUATOR
CN104616937B (en) * 2015-01-15 2017-01-25 中山大学 An arc extinguishing protection device for photovoltaic combiner box

Also Published As

Publication number Publication date
FR2370354B1 (en) 1980-12-19
DE2749467A1 (en) 1978-05-11
IT1212291B (en) 1989-11-22
FR2370354A1 (en) 1978-06-02

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