GB599318A - Improvements in or relating to liquid-blast electric circuit interrupters - Google Patents

Improvements in or relating to liquid-blast electric circuit interrupters

Info

Publication number
GB599318A
GB599318A GB22460/45A GB2246045A GB599318A GB 599318 A GB599318 A GB 599318A GB 22460/45 A GB22460/45 A GB 22460/45A GB 2246045 A GB2246045 A GB 2246045A GB 599318 A GB599318 A GB 599318A
Authority
GB
United Kingdom
Prior art keywords
contact
arc
pressure
interrupting
oil
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
GB22460/45A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB599318A publication Critical patent/GB599318A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/98Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow

Landscapes

  • Circuit Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

599,318. Liquid-blast switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 31, 1945, No. 22460. Convention date, Aug. 31, 1944. [Class 38(v)] A liquid-blast circuit-breaker in which a pressure-generating arc forces extinguishing fluid through an interrupting arc has two mechanically driven pistons to supplement the normal flow, one jetting fluid into the pressure generating arc and the other which may be stalled by back-pressure during high current interruption, but subsequently flushes out the interrupting arc. The circuitbreaker comprises two arc - extinguishing units, of laminated construction mounted on the terminal stems of insulators in an oil tank, Fig. 1 (not shown), each housing the pressure-generating contact 16, intermediate contact 17, and an interrupting contact 47, connected through isolating contact 62 by a bridging piece 12 to the other unit. A spring-loaded insulating rod 31 abutting on the bridgepiece carries a pin 29 engaging one arm 27 of a forked lever, whose other arm engages a pin 22 to impart linear motion to the pressure-contact 16, along its guide pin 20. The rod 31 also drives the piston 37 to force oil through passages 41 into the pressurearc chamber when the breaker is opened. A vent passage from the top of the pistonchamber into the unit equalises the arcpressure on both sides of piston 37 so that no extra force is required to open the contacts with high arcing currents. The other spring-loaded piston 49 is slidably mounted on the interrupting-contact 47 and vented on its upper side to the tank so that on high currents it is held up by the internal pressure but subsequently forces oil through passages 55, 45 to the interrupting arc. Check valves 56, 57 ensure a supply of clean oil being drawn into the arcing unit from the tank when the circuit-breaker is reclosed. Specification 578,422 is referred to. The Specification as open 'to inspection under Sect. 91 also refers to Specification 600,733. This reference does not appear in the Specification as accepted.
GB22460/45A 1944-08-31 1945-08-31 Improvements in or relating to liquid-blast electric circuit interrupters Expired GB599318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US552132A US2445442A (en) 1944-08-31 1944-08-31 Circuit interrupter

Publications (1)

Publication Number Publication Date
GB599318A true GB599318A (en) 1948-03-10

Family

ID=24204053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22460/45A Expired GB599318A (en) 1944-08-31 1945-08-31 Improvements in or relating to liquid-blast electric circuit interrupters

Country Status (2)

Country Link
US (1) US2445442A (en)
GB (1) GB599318A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600733A (en) * 1947-04-16 1948-04-16 Westinghouse Electric Int Co Improvements in or relating to fluid blast electric circuit interrupters, having arcextinguishing means
US2669628A (en) * 1950-01-05 1954-02-16 Westinghouse Electric Corp Liquid break circuit interrupter
US2621273A (en) * 1950-04-28 1952-12-09 Westinghouse Electric Corp Liquid-break circuit interrupter
US2671147A (en) * 1950-05-18 1954-03-02 Westinghouse Electric Corp Circuit interrupter
US2737556A (en) * 1951-04-27 1956-03-06 Westinghouse Electric Corp Circuit interrupter
US2733317A (en) * 1953-04-20 1956-01-31 Pl tayi or
US2735914A (en) * 1953-04-24 1956-02-21 Circuit breaker contact actuating mechanism
US2762890A (en) * 1953-04-27 1956-09-11 Allis Chalmers Mfg Co Interrupter with barrier plates forming a u-shaped passage
US2752459A (en) * 1953-04-27 1956-06-26 Allis Chalmers Mfg Co Circuit breaker with arc restraining members in fluid supply passageways
US2892057A (en) * 1956-05-28 1959-06-23 Westinghouse Electric Corp Automatic recloser

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410909A (en) * 1933-01-18 1934-05-31 William Anselm Coates Improvements relating to liquid-immersed electric switches
US2102768A (en) * 1935-01-07 1937-12-21 Gen Electric Liquid break circuit breaker
USRE21848E (en) * 1936-02-27 1941-07-01 Electric circuit breaker
GB489336A (en) * 1937-01-22 1938-07-22 Cedric Harold Flurscheim Improvements in and relating to liquid-break electric circuit breakers
GB486050A (en) * 1937-02-02 1938-05-30 Gen Electric Co Ltd Improvements in or relating to fluid-blast electric circuit breakers
CH210672A (en) * 1937-07-19 1940-07-31 Hermes Patentverwertungs Gmbh High-performance switch with switching chamber.
BE429490A (en) * 1937-08-12
US2258226A (en) * 1939-09-13 1941-10-07 Gen Electric Electric circuit breaker
US2292547A (en) * 1939-09-13 1942-08-11 Kelman Electric & Mfg Company Apparatus for interrupting electric circuits

Also Published As

Publication number Publication date
US2445442A (en) 1948-07-20

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