GB1167057A - Improvements in Electric Circuit Breakers with Electromagnetic Means for Opposing Contact-Repulsion Forces. - Google Patents

Improvements in Electric Circuit Breakers with Electromagnetic Means for Opposing Contact-Repulsion Forces.

Info

Publication number
GB1167057A
GB1167057A GB22643/67A GB2264367A GB1167057A GB 1167057 A GB1167057 A GB 1167057A GB 22643/67 A GB22643/67 A GB 22643/67A GB 2264367 A GB2264367 A GB 2264367A GB 1167057 A GB1167057 A GB 1167057A
Authority
GB
United Kingdom
Prior art keywords
conductor
spring
circuit
breaker
latch
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
GB22643/67A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1167057A publication Critical patent/GB1167057A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/101—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening with increasing of contact pressure by electrodynamic forces before opening

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Breakers (AREA)

Abstract

1,167,057. Automatic circuit - breakers; vacuum switches. GENERAL ELECTRIC CO. 16 May, 1967 [16 June, 1966], No. 22643/67. Heading H1N. A circuit-breaker has a rigid movable conductor 20 connected to a moving contact 12 and a rigid movable member 40 for developing a magnetic closing force on the conductor which varies in dependence on the square of the current through the contacts 11, 12. In the arrangement shown, the rotation of a cam 70 straightens a toggle 52, 54 and moves the magnetic member 40 upwards until it engages and releases a latch 28. A spring 24 now causes the anticlockwise motion of the conductor 20 to close the contacts 11, 12. As the contacts close, current flowing through the conductor 20 creates a flux through the member 40 which then provides a closing force acting on the conductor 20. The circuit-breaker may be tripped open under overload conditions on the energization of an electromagnet 64 to release a latch 62. The circuit-breaker is opened by a spring 48 which moves the member 40 until it strikes and then moves the conductor 20. In a modified arrangement, Fig. 5 (not shown), the member 40 is replaced by a further conductor connected in series with, and arranged below, the conductor 20. The current flows in opposite directions in the two conductors so that the force of repulsion between them provides a closing force. In another embodiment, Fig. 4 (not shown), the latch 28 and the spring 24 are replaced by an overcentre spring toggle. The contact assembly may be provided by a vacuum switch as shown.
GB22643/67A 1966-06-16 1967-05-16 Improvements in Electric Circuit Breakers with Electromagnetic Means for Opposing Contact-Repulsion Forces. Expired GB1167057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US558008A US3366900A (en) 1966-06-16 1966-06-16 Electric circuit breaker with electromagnetic means for opposing contactrepulsion forces

Publications (1)

Publication Number Publication Date
GB1167057A true GB1167057A (en) 1969-10-15

Family

ID=24227782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22643/67A Expired GB1167057A (en) 1966-06-16 1967-05-16 Improvements in Electric Circuit Breakers with Electromagnetic Means for Opposing Contact-Repulsion Forces.

Country Status (4)

Country Link
US (1) US3366900A (en)
JP (1) JPS4520658B1 (en)
FR (1) FR1529018A (en)
GB (1) GB1167057A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1229799A (en) * 1967-11-13 1971-04-28
US3614353A (en) * 1968-05-30 1971-10-19 Tokyo Shibaura Electric Co Switching device having electro-magnetic means for increasing effective contact pressure
US3663906A (en) * 1969-10-09 1972-05-16 Gen Electric Electric circuit breaker with magnetically assisted closing means
US3651436A (en) * 1970-01-02 1972-03-21 Texas Instruments Inc Circuit breaker
US3594668A (en) * 1970-01-02 1971-07-20 Texas Instruments Inc Remote control circuit breaker
JPS4946180B1 (en) * 1970-02-09 1974-12-09
US3777291A (en) * 1972-11-20 1973-12-04 Gen Electric Electric switch with magnetic-assist means to assist switch in closing and remaining closed against high currents
US4032870A (en) * 1975-09-15 1977-06-28 General Electric Company Electric circuit breaker with electromagnetic-assist means for opposing magnetic contact-separating forces
US4030055A (en) * 1976-02-27 1977-06-14 General Electric Company Electric circuit breaker with electro-magnetic means for opposing magnetic contact-repulsion forces
US4025886A (en) * 1976-06-04 1977-05-24 General Electric Company Electric circuit breaker with electro-magnetically-assisted closing means
US4099039A (en) * 1976-12-20 1978-07-04 General Electric Company Means for effectively controlling the forces imposed on the movable contact of a vacuum-type circuit interrupter
US4419553A (en) * 1981-01-19 1983-12-06 Mitsubishi Denki Kabushiki Kaisha Vacuum type circuit breaker
US5088341A (en) * 1990-02-09 1992-02-18 Westinghouse Electric Corp. Engaging lever lock for rotor turning gear
GB9614169D0 (en) * 1996-07-05 1996-09-04 Whipp & Bourne Ltd Electrical circuit breakers
FR2993092B1 (en) 2012-07-03 2015-04-17 Schneider Electric Ind Sas CUTTING APPARATUS COMPRISING MEANS FOR MAINTAINING CLOSURE OF CONTACTS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090519A (en) * 1937-08-17 Vacuum circuit interrupter
US2601484A (en) * 1949-11-16 1952-06-24 Ite Circuit Breaker Ltd Blow open, blow closed circuit breaker
DE1158606B (en) * 1961-12-28 1963-12-05 Siemens Ag Actuation device for synchronous switch
US3253098A (en) * 1963-10-24 1966-05-24 Allis Chalmers Mfg Co Mechanical actuator with permanent magnet

Also Published As

Publication number Publication date
JPS4520658B1 (en) 1970-07-14
US3366900A (en) 1968-01-30
FR1529018A (en) 1968-06-14
DE1640230B2 (en) 1975-08-14
DE1640230A1 (en) 1970-05-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee