GB553472A - Improvements in and relating to gas blast electric circuit breakers - Google Patents

Improvements in and relating to gas blast electric circuit breakers

Info

Publication number
GB553472A
GB553472A GB7195/42A GB719542A GB553472A GB 553472 A GB553472 A GB 553472A GB 7195/42 A GB7195/42 A GB 7195/42A GB 719542 A GB719542 A GB 719542A GB 553472 A GB553472 A GB 553472A
Authority
GB
United Kingdom
Prior art keywords
cooling
blast
chamber
exhaust chamber
exhaust
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
GB7195/42A
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 GB553472A publication Critical patent/GB553472A/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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/57—Recuperation of liquid or gas
    • 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
    • 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
    • H01H33/80—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve
    • H01H33/82—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid flow of arc-extinguishing fluid from a pressure source being controlled by a valve the fluid being air or gas
    • 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
    • H01H2033/888—Deflection of hot gasses and arcing products
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Landscapes

  • Carbon And Carbon Compounds (AREA)
  • Incineration Of Waste (AREA)

Abstract

553,472. Gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 27, 1942, No. 7195. Convention date, May 28, 1941. [Class 38 (v)] In order to minimize the emission of flame from the exhaust of gas-blast switches and especially those in which additionally a gasevolving insulating material such as hard fibre or urea or methylmethacrylate resin is placed adjacent the arc, an auxiliary supply of fresh air is fed directly into the exhaust chamber beyond the arcing region, whereby combustion and cooling of inflammable gases is confined to that chamber. In the application to the switch of Specification 544,017, having fixed and movable contacts 3, 4, an arc chute 5 with diverging passages and cooling metal plates 12, and an exhaust chamber 13 with metal cooling plates 26, a pipe 23 leading from the main blast pipe 8 supplies the exhaust chamber 13 directly through an adjustable nozzle 24 and metal baffles 25 ensure thorough mixing and cooling of the gases. In a modification, Fig. 3 (not shown), air is induced from outside by suction through a series of inclined tubes opening in the chamber 13 in the direction of flow of the blast. Specifications 432,535 and 517,984 also are referred to. The Specification as open to inspection under Sect. 91 referred also to carbon-dioxide as blastmedium, and to axial-blasts. This subject-matter does not appear in the Specification as accepted.
GB7195/42A 1941-05-28 1942-05-27 Improvements in and relating to gas blast electric circuit breakers Expired GB553472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US395579A US2292158A (en) 1941-05-28 1941-05-28 Gas blast circuit breaker

Publications (1)

Publication Number Publication Date
GB553472A true GB553472A (en) 1943-05-24

Family

ID=23563625

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7195/42A Expired GB553472A (en) 1941-05-28 1942-05-27 Improvements in and relating to gas blast electric circuit breakers

Country Status (2)

Country Link
US (1) US2292158A (en)
GB (1) GB553472A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570610A (en) * 1947-08-23 1951-10-09 Allis Chalmers Mfg Co Gas blast circuit breaker with trap for products of arcing
US2647973A (en) * 1949-07-18 1953-08-04 Pacific Electric Mfg Corp Circuit interrupter
BE545609A (en) * 1955-08-29
US2900477A (en) * 1956-09-21 1959-08-18 Westinghouse Electric Corp Circuit interrupters
US2942086A (en) * 1957-03-06 1960-06-21 Allis Chalmers Mfg Co Chimney cooler for air circuit breakers
US3005892A (en) * 1957-03-19 1961-10-24 Ite Circuit Breaker Ltd Arc chute design for circuit breakers
US3025376A (en) * 1958-05-13 1962-03-13 Ite Circuit Breaker Ltd Arc chute for circuit breakers
US4559423A (en) * 1983-04-28 1985-12-17 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
EP1768150B1 (en) * 2005-09-26 2010-02-17 ABB Technology AG High voltage circuit breaker with improved interrupting capacity

Also Published As

Publication number Publication date
US2292158A (en) 1942-08-04

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