GB537364A - Improvements in and relating to electric circuit breakers of the liquid blast type - Google Patents

Improvements in and relating to electric circuit breakers of the liquid blast type

Info

Publication number
GB537364A
GB537364A GB10750/40A GB1075040A GB537364A GB 537364 A GB537364 A GB 537364A GB 10750/40 A GB10750/40 A GB 10750/40A GB 1075040 A GB1075040 A GB 1075040A GB 537364 A GB537364 A GB 537364A
Authority
GB
United Kingdom
Prior art keywords
blast
apertures
piston
arc
subsequently
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
GB10750/40A
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 GB537364A publication Critical patent/GB537364A/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
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/164—Impedances connected with contacts the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
    • 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
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/92—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being liquid, e.g. oil

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Circuit Breakers (AREA)

Abstract

537,364. Fluid-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. June 22, 1940, No. 10750. Convention date, June 22, 1939. [Class 38 (v)] In a liquid-blast switch employing a current limiting resistance 17 shunting the main arc between the fixed and movable contacts 11, 7, the reduced current through the resistance being subsequently interrupted at an arc between contact 11 and an auxiliary contact 19, the movable contact 7 carries a chamber 8 which operates as a piston in a cylinder 9 having a series of perforations 13, which are covered by the piston 8 after a.contacttravel which is sufficient to prevent re-ignition of the extinguished arc. The piston has apertures 16, 18 for the'blast for the main arc and for the subsequently-established resistance-are respectively, the apertures 16 being subsequently partially closed by cylinder 9 so as to concentrate the blast at apertures 18. The housing 6 is mounted above a similar housing on a base containing operating mechanism, the housings being oil-filled.
GB10750/40A 1939-06-22 1940-06-22 Improvements in and relating to electric circuit breakers of the liquid blast type Expired GB537364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860421T 1939-06-22

Publications (1)

Publication Number Publication Date
GB537364A true GB537364A (en) 1941-06-18

Family

ID=9333482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10750/40A Expired GB537364A (en) 1939-06-22 1940-06-22 Improvements in and relating to electric circuit breakers of the liquid blast type

Country Status (4)

Country Link
US (1) US2281385A (en)
BE (1) BE440836A (en)
FR (1) FR860421A (en)
GB (1) GB537364A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349019A (en) * 1988-12-24 1994-09-20 Hoechst New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2781435A (en) * 1951-03-18 1957-02-12 Heilmann Philipp Arc-extinguishing mechanism for electric switches
US2757261A (en) * 1951-07-19 1956-07-31 Westinghouse Electric Corp Circuit interrupters
GB710925A (en) * 1951-10-26 1954-06-23 Westinghouse Electric Int Co Improvements in or relating to electric circuit interrupter devices
US2788418A (en) * 1954-03-22 1957-04-09 Gertrude M Idzkowski Circuit interrupter
FR1108749A (en) * 1954-06-18 1956-01-17 Device for interrupting high power electric arcs
US2924690A (en) * 1954-12-24 1960-02-09 Westinghouse Electric Corp Circuit interrupters
US2919330A (en) * 1956-01-30 1959-12-29 Oerlikon Engineering Company Low-oil content high-tension oil circuit breaker
US3529108A (en) * 1966-09-01 1970-09-15 Westinghouse Electric Corp Nozzle and contact construction for fluid-blast circuit interrupters
US3688242A (en) * 1969-10-24 1972-08-29 Morganite Resistors Ltd Shunt for oil-immersed circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5349019A (en) * 1988-12-24 1994-09-20 Hoechst New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils

Also Published As

Publication number Publication date
BE440836A (en)
FR860421A (en) 1941-01-14
US2281385A (en) 1942-04-28

Similar Documents

Publication Publication Date Title
GB547705A (en) Improvements in and relating to fluid blast electric circuit breakers
GB1272704A (en) Gas blast circuit interrupter having conducting orifice means
GB537364A (en) Improvements in and relating to electric circuit breakers of the liquid blast type
GB1151572A (en) Improvements in or relating to Circuit Breaker Apparatus
GB540349A (en) Improvements in electric circuit breakers of the gas blast type
GB557728A (en) Improvements in and relating to gas blast electric circuit breakers
GB571109A (en) Improvements in or relating to electric circuit interrupters having arc-extinguishing arrangements
GB553477A (en) Improvements in and relating to gas blast electric circuit breakers
GB1114613A (en) Cross-blast circuit breakers
GB606860A (en) Improvements in or relating to gas blast electric circuit-breakers
GB544932A (en) Improvements in electric circuit breakers
GB750842A (en) Improvements in and relating to electric circuit interrupters of the liquid blast type
GB562429A (en) Improvements in and relating to electric circuit breakers having arc-extinguishing means
GB538672A (en) Compressed air circuit breaker having a resistance bridging the contacts
GB547361A (en) Improvements in and relating to gas blast electric circuit breakers
GB541941A (en) Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type
GB1092031A (en) Air blast electric circuit breaker
GB524983A (en) Improvements in and relating to gas blast electric switches
GB527702A (en) Improvements in and relating to liquid-blast electric circuit breakers
ES458755A1 (en) Switching device
GB544607A (en) Improvements in and relating to oil blast electric circuit breakers
GB551966A (en) Improvements in air-break electric circuit breakers
GB537482A (en) Improvements in or relating to electric circuit-breakers of the gas-blast type
GB712436A (en) Improvements in and relating to gas blast electric circuit breakers with resistance switching
GB545799A (en) Improvements in mercury interrupters