FR2371766A1 - Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between - Google Patents

Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between

Info

Publication number
FR2371766A1
FR2371766A1 FR7635176A FR7635176A FR2371766A1 FR 2371766 A1 FR2371766 A1 FR 2371766A1 FR 7635176 A FR7635176 A FR 7635176A FR 7635176 A FR7635176 A FR 7635176A FR 2371766 A1 FR2371766 A1 FR 2371766A1
Authority
FR
France
Prior art keywords
permanent magnet
relative permeability
coercive force
alloyed
circuit breakers
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
FR7635176A
Other languages
French (fr)
Other versions
FR2371766B1 (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.)
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
Priority to FR7635176A priority Critical patent/FR2371766A1/en
Publication of FR2371766A1 publication Critical patent/FR2371766A1/en
Application granted granted Critical
Publication of FR2371766B1 publication Critical patent/FR2371766B1/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
    • 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)
  • Soft Magnetic Materials (AREA)
  • Electromagnets (AREA)

Abstract

A relay comprises a magnetic circuit having a yoke of two branches (1, 2) joined by a permanent magnet (3). A movable armature (4) overcomes the restoring force of the spring (5) which is slightly less than the attractive force of the flux of the magnet. A driving circuit (7) is wound on the branches of the yoke in such a way that for a given direction of the driving current flow, it generates a flux opposite to that of the magnet, of sufficient magnitude to release the mobile armature (4). The permanent magnet consists of a low remanence magnetic alloy whose reversible relative permeability is between 5 and 25 and whose coercive force is between 2500 and 20,000. Ampere turns per metre.
FR7635176A 1976-11-23 1976-11-23 Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between Granted FR2371766A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7635176A FR2371766A1 (en) 1976-11-23 1976-11-23 Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7635176A FR2371766A1 (en) 1976-11-23 1976-11-23 Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between

Publications (2)

Publication Number Publication Date
FR2371766A1 true FR2371766A1 (en) 1978-06-16
FR2371766B1 FR2371766B1 (en) 1979-03-30

Family

ID=9180169

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7635176A Granted FR2371766A1 (en) 1976-11-23 1976-11-23 Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between

Country Status (1)

Country Link
FR (1) FR2371766A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589623A1 (en) * 1985-10-31 1987-05-07 Itt Composants Instr ELECTROMAGNETIC RELAY

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128418A (en) * 1960-07-13 1964-04-07 Bell Telephone Labor Inc Magnetically latched switch operator
US3624568A (en) * 1970-10-26 1971-11-30 Bell Telephone Labor Inc Magnetically actuated switching devices

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128418A (en) * 1960-07-13 1964-04-07 Bell Telephone Labor Inc Magnetically latched switch operator
US3624568A (en) * 1970-10-26 1971-11-30 Bell Telephone Labor Inc Magnetically actuated switching devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589623A1 (en) * 1985-10-31 1987-05-07 Itt Composants Instr ELECTROMAGNETIC RELAY
EP0225236A1 (en) * 1985-10-31 1987-06-10 Itt Industries, Inc. Electromagnetic relay

Also Published As

Publication number Publication date
FR2371766B1 (en) 1979-03-30

Similar Documents

Publication Publication Date Title
ES8400630A1 (en) Monostably functioning electromagnet having a permanent magnet armature.
GB1195629A (en) Magnetically Held Relay
GB1493751A (en) Electromagnetic relays
DE69022077D1 (en) Tripping system for an electrical switch and electrical switch with this tripping system.
WO1985004044A1 (en) Electromagnetic actuator apparatus
EP0836212A3 (en) Bistable electromagnetic system for relay
FR2371766A1 (en) Polarised relay system for circuit breakers - has alloyed permanent magnet with reversible relative permeability and coercive force between
FR2321181A1 (en) Highly sensitive electromagnetic relay - uses attraction force generated in coil on yoke against spring force
US3715695A (en) Electromagnetic switch having a flexible permanent magnet armature
ES486095A1 (en) Electromagnetic actuator.
GB1153960A (en) Improvements in or relating to Electromagnetic Relays
FR2371765A1 (en) Polarised relay for circuit breakers - has shunt formed by overlapping extended parts of laminated core interspersed by non-magnetic material
FR2371764A1 (en) Polarised relay with two armed yoke - responds to control current irrespective of its direction using separate control circuit for each arm
GB983303A (en) Electrical relays
FR2370354A1 (en) Circuit breaker polarised differential trip - has several coils wound on magnetic circuit to generate differential flux of specified direction
GB1187884A (en) Improvements relating to Electromagnetic Relays.
GB1232725A (en)
GB1182692A (en) Improvements in or relating to Electromagnetic Relays
ES8502570A1 (en) Method of adjusting a trip device with permanent magnet.
ES8200509A1 (en) Release for a fault current protective switch.
JPS5854528A (en) Electromagnetic relay
SU845194A1 (en) Apparatus for protecting from back currents
JPH0446357Y2 (en)
GB958235A (en) Electromagnetic switching device
GB892844A (en) Improvements in and relating to polarised electromagnetic relays

Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse