GB890535A - Improvements in pneumatically-operated electric circuit breakers - Google Patents

Improvements in pneumatically-operated electric circuit breakers

Info

Publication number
GB890535A
GB890535A GB39388/59A GB3938859A GB890535A GB 890535 A GB890535 A GB 890535A GB 39388/59 A GB39388/59 A GB 39388/59A GB 3938859 A GB3938859 A GB 3938859A GB 890535 A GB890535 A GB 890535A
Authority
GB
United Kingdom
Prior art keywords
contact
gas
contacts
spring
piston
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
GB39388/59A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB890535A publication Critical patent/GB890535A/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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/302—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator for fluid insulated switchgear, wherein the insulating fluid is also the working fluid

Landscapes

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

Abstract

890,535. Gas-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 20, 1959 [Nov. 24,. 1958], No. 39388/59. Class 38 (5). A gas-blast circuit-breaker comprises a compressed gas container 1 carrying at one end a fixed hollow contact 3 and at the other end a cylindrical casing 8 in which slides a hollow contact 4 joined by a rod 16 to a spring-biased piston 14 movable in a cylinder 15. Contacts 3, 4 are connected in parallel with auxiliary contacts 21, 22 and a resistor 23 by members 1, 8, 24, contact 21 being carried by a spring- biased piston 20 slidable inside contact 3. Contact 4 has spring-biased fingers 6 and an annular portion 11 co-operating respectively with a protrusion 7 and a flexible ring-shaped seating 12 on the contact 3, members 11, 12 forming a gastight seal. When the breaker is closed the inside of contact 4 communicates with the atmosphere through an open spring-controlled valve 13 and with the space 28 above piston 20 through a channel 26, thus allowing gas in space 29, charged from container 1 through a channel 25, to raise piston 20 against spring 27 to close contacts 21, 22. To open, gas from pipe 19 forces the piston 14 and contact 4 to the right and an arc-extinguishing gas-blast flows out through contact 4 and valve 13, after which the latter is closed by gas from cylinder 15 passing through a channel 30 to its interior. Opening of contact 4 allows gas to pass through the channel 26 to equalize the pressure in spaces 28, 29 and allow spring 27 to open the contacts 21, 22, the time interval between the opening of contacts 3, 4 and 21, 22 being determined by the size of the channel 26. To close, pipe 19 is exhausted to allow the spring 18 to operate the piston 14, movement of which connects the valve 13 to atmosphere through a channel 31. The closure of contacts 3, 4 and the consequent opening of the valve 13 allows the space 28 to exhaust to atmosphere and the closure of contacts 21, 22 to be effected by the piston 20.
GB39388/59A 1958-11-24 1959-11-20 Improvements in pneumatically-operated electric circuit breakers Expired GB890535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1087258 1958-11-24

Publications (1)

Publication Number Publication Date
GB890535A true GB890535A (en) 1962-03-07

Family

ID=20292971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39388/59A Expired GB890535A (en) 1958-11-24 1959-11-20 Improvements in pneumatically-operated electric circuit breakers

Country Status (5)

Country Link
US (1) US3014111A (en)
CH (1) CH373445A (en)
DE (1) DE1088581B (en)
FR (1) FR1241059A (en)
GB (1) GB890535A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH386530A (en) * 1960-09-07 1965-01-15 Asea Ab Compressed air switch with a container which is arranged at high voltage potential and is constantly filled with compressed air
DE1261930B (en) * 1961-03-23 1968-02-29 Liebknecht Transformat High-voltage gas switch
DE1212189B (en) * 1962-11-09 1966-03-10 Bbc Brown Boveri & Cie Pulse-like switching device for compressed gas switch
GB1052905A (en) * 1963-04-10
US3433913A (en) * 1965-07-28 1969-03-18 Westinghouse Electric Corp Gas-blast circuit interrupter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB582599A (en) * 1944-07-07 1946-11-21 English Electric Co Ltd Improvements in electric circuit breakers
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance
US2757261A (en) * 1951-07-19 1956-07-31 Westinghouse Electric Corp Circuit interrupters
US2773484A (en) * 1952-12-27 1956-12-11 Allis Chalmers Mfg Co Pneumatically operated circuit breaker with closing valve cutoff switch
BE526782A (en) * 1953-02-26
DE933819C (en) * 1953-10-23 1955-10-06 Liebknecht Transformat Arrangement for switching off the protective resistors of high-voltage switches with compressed gas drive
US2824937A (en) * 1954-12-30 1958-02-25 Westinghouse Electric Corp Circuit interrupters
US2965735A (en) * 1956-06-07 1960-12-20 Westinghouse Electric Corp Compressed-gas circuit interrupter
BE568382A (en) * 1957-06-07

Also Published As

Publication number Publication date
DE1088581B (en) 1960-09-08
US3014111A (en) 1961-12-19
CH373445A (en) 1963-11-30
FR1241059A (en) 1960-09-09

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