GB483889A - Improvements in and relating to electric circuit breakers having arc-extinguishing provision - Google Patents

Improvements in and relating to electric circuit breakers having arc-extinguishing provision

Info

Publication number
GB483889A
GB483889A GB14967/37A GB1496737A GB483889A GB 483889 A GB483889 A GB 483889A GB 14967/37 A GB14967/37 A GB 14967/37A GB 1496737 A GB1496737 A GB 1496737A GB 483889 A GB483889 A GB 483889A
Authority
GB
United Kingdom
Prior art keywords
members
gas
arc
bushings
contacts
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
GB14967/37A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB483889A publication Critical patent/GB483889A/en
Expired 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
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/76—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor

Landscapes

  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)

Abstract

483,889. Heavy - current switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 29, 1937, No. 14967. Convention date, May 29, 1936. [Class 38 (v)] A circuit-breaker comprises a substantially gas-tight compression chamber 12 having walls of pressure-resistant material, as steel, surrounding a pair of relatively-movable contacts 21, 23, and an annular gas-evolving member 20 disposed within the chamber adjacent the point of separation of the contacts, and formed of a material capable of evolving substantial quantities of gas when exposed to an arc. The members 20 is positioned between annular spacers 19 of steel or other heatresisting material which does not evolve gas in quantities. The spacers 19 engage annular members 15, between which and the bushings 13 of moulded insulation are sealing washers 16, 17 and a guard 18, preferably of soft copper. Peripheral parts 14 on the bushings 13 provide a tight seal between the latter and the chamber 12. To protect the bushings 13 from the arc, the members 15 are of heat-resisting material and have extensions 24 closely fitting the contacts 21, 23. A suitable material for member 20, and preferably also for members 15, is kerosene-free fibre, preferably made from cotton cellulose treated with zinc chloride which is later washed out until less than 0À02 per cent remains. The movable contact 23 is reciprocally moved into and out of contact with 21 by mechanism of the character disclosed in Specification 450,012. Specification 420,042 also is referred to.
GB14967/37A 1933-04-25 1937-05-29 Improvements in and relating to electric circuit breakers having arc-extinguishing provision Expired GB483889A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US667856A US2047842A (en) 1933-04-25 1933-04-25 Circuit breaker
US667855A US2047815A (en) 1933-04-25 1933-04-25 Circuit breaker
US454083XA 1934-05-04 1934-05-04

Publications (1)

Publication Number Publication Date
GB483889A true GB483889A (en) 1938-04-27

Family

ID=31891951

Family Applications (3)

Application Number Title Priority Date Filing Date
GB12467/34A Expired GB420042A (en) 1933-04-25 1934-04-25 Improvements in and relating to arc extinguishing arrangements for electric circuit breakers
GB12581/36A Expired GB454083A (en) 1933-04-25 1936-05-04 Improvements in and relating to electric circuit breakers
GB14967/37A Expired GB483889A (en) 1933-04-25 1937-05-29 Improvements in and relating to electric circuit breakers having arc-extinguishing provision

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB12467/34A Expired GB420042A (en) 1933-04-25 1934-04-25 Improvements in and relating to arc extinguishing arrangements for electric circuit breakers
GB12581/36A Expired GB454083A (en) 1933-04-25 1936-05-04 Improvements in and relating to electric circuit breakers

Country Status (3)

Country Link
US (4) US2047842A (en)
FR (3) FR772259A (en)
GB (3) GB420042A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119575A (en) * 1982-04-29 1983-11-16 Bbc Brown Boveri & Cie Explosion-proof or flame-proof electrical switching device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486888A (en) * 1945-02-05 1949-11-01 Arrow Hart & Hegeman Electric Current responsive relay with shock and ambient temperature compensating means
US2866026A (en) * 1954-09-22 1958-12-23 Westinghouse Electric Corp Circuit breakers
US2811612A (en) * 1956-02-23 1957-10-29 Mc Graw Edison Co Load break interrupter
US3132222A (en) * 1961-12-28 1964-05-05 Gen Electric High voltage circuit breaker
US3668351A (en) * 1969-07-30 1972-06-06 Kearney National Inc Sectionalizing and protective apparatus for single house transformer
BE793833A (en) * 1972-01-14 1973-05-02 Telemecanique Electrique ARMING AND TRIPPING DEVICE FOR THERMAL RELAY
JPS58131631A (en) * 1982-01-30 1983-08-05 松下電工株式会社 Circuit breaker
GB2169749A (en) * 1985-01-12 1986-07-16 Ashley Accessories Ltd Electrical outlet accessories with incorporated automatic circuit breaker
US5335928A (en) * 1993-09-16 1994-08-09 Cannondale Corporation Bicycle bottom bracket/crank assembly
CN114284114B (en) * 2021-11-19 2024-04-05 河南平高电气股份有限公司 High-voltage circuit breaker and circuit breaker connecting box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119575A (en) * 1982-04-29 1983-11-16 Bbc Brown Boveri & Cie Explosion-proof or flame-proof electrical switching device

Also Published As

Publication number Publication date
US2047842A (en) 1936-07-14
FR47374E (en) 1937-03-25
FR772259A (en) 1934-10-26
US2053934A (en) 1936-09-08
GB420042A (en) 1934-11-23
US2053972A (en) 1936-09-08
GB454083A (en) 1936-09-23
FR48505E (en) 1938-03-08
US2047815A (en) 1936-07-14

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