GB821198A - Improvements in air blast electric circuit breakers - Google Patents

Improvements in air blast electric circuit breakers

Info

Publication number
GB821198A
GB821198A GB2937/58A GB293758A GB821198A GB 821198 A GB821198 A GB 821198A GB 2937/58 A GB2937/58 A GB 2937/58A GB 293758 A GB293758 A GB 293758A GB 821198 A GB821198 A GB 821198A
Authority
GB
United Kingdom
Prior art keywords
valve
piston
compressed air
blast
contact
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
GB2937/58A
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 GB821198A publication Critical patent/GB821198A/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
    • 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

Landscapes

  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

821,198. High-tension switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Jan. 29, 1958 [Feb. 1, 1957], No. 2937/58. Class 38 (5). An air-blast circuit-breaker with contacts 10, 23 in a metal container 2 filled with compressed air, has a lead-through insulator 7 in the wall of the container 2 carrying the movable contact 10 and its operating piston 11, and another leadthrough insulator 6 which carries the stationary nozzle contact 23 and a blast valve 29. To open the breaker a coil 59 is energized to overcome a holding magnet 58 so that a spring 54 moves a piston 56 and rod 55 upward to operate a valve 48 so that compressed air passes from the container 2 along a pipe 49 to act on a piston 43. This operates a valve 35 to pass compressed air from container 2 to the operating cylinder 25 to open the blast-valve 29. The latter part of the movement of the piston 43 allows compressed air to pass along a tube 46 and act on a piston 40 which operates a valve 22 to open the underside of the contact piston 11 to the atmosphere. As the contacts open exhaust air passes around the arcing contact 27 and through a cooling grid 28 and the blast valve to the atmosphere. Air also passes through a hole 45 in the piston 43 so that after sufficient time for circuit interruption the blast valve is again closed. To close the breaker a coil 63 is energized to operate a valve 60 and supply compressed air to the piston 56 so that it is restored to the position where it is retained by the magnet 58. This allows a spring 53 to reset the valve 48 so that the compressed air supply is cut-off from the piston 40 and the valve 22 is restored so that spring pressure on the piston 11 closes the contacts. The valve 29 may alternatively be arranged close to the contact 23.
GB2937/58A 1957-02-01 1958-01-29 Improvements in air blast electric circuit breakers Expired GB821198A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE821198X 1957-02-01

Publications (1)

Publication Number Publication Date
GB821198A true GB821198A (en) 1959-09-30

Family

ID=20349240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2937/58A Expired GB821198A (en) 1957-02-01 1958-01-29 Improvements in air blast electric circuit breakers

Country Status (5)

Country Link
US (1) US2969446A (en)
BE (1) BE564461A (en)
DE (1) DE1062787B (en)
FR (1) FR1198663A (en)
GB (1) GB821198A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171973B (en) * 1960-11-02 1964-06-11 Asea Ab Gas pressure switch
DE1203855B (en) * 1960-02-27 1965-10-28 Asea Ab Device for braking the opening movement of the moving contact of a compressed air switch
DE1221332B (en) * 1964-08-21 1966-07-21 Bbc Brown Boveri & Cie Gas pressure switch
DE1230887B (en) * 1961-07-25 1966-12-22 Merlin & Gerin Ste Anonyme Ets Compressed gas switch with a device to prevent arcs from stopping
DE1266853B (en) * 1962-09-26 1968-04-25 Licentia Gmbh Compressed gas switch with a power switching point and a voltage isolating point in series

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH372721A (en) * 1959-06-13 1963-10-31 Bbc Brown Boveri & Cie Compressed air switch with multiple interruption
DE1260589B (en) * 1962-03-09 1968-02-08 Ass Elect Ind Switching valve for pressure gas switch
US3780244A (en) * 1972-10-18 1973-12-18 Gen Electric Gas blast circuit breaker of the axial blast type
DE3636922C2 (en) * 1986-10-30 1994-08-11 Calor Emag Elektrizitaets Ag Bridge switch disconnector

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB490518A (en) * 1936-12-14 1938-08-15 British Thomson Houston Co Ltd Improvements in electrical switchgear
US2507210A (en) * 1944-11-28 1950-05-09 Westinghouse Electric Corp Gas blast circuit breaker
US2459600A (en) * 1944-12-14 1949-01-18 Westinghouse Electric Corp Compressed gas circuit interrupter
FR997193A (en) * 1945-06-13 1952-01-02 Delle Atel Const Electr Tank circuit breaker
USRE25631E (en) * 1951-02-09 1964-08-18 Air blast circuit breaker
US2665351A (en) * 1951-02-09 1954-01-05 Asea Ab Arrangement in air blast circuit breaker provided with damping resistance
BE519814A (en) * 1952-05-31
GB764647A (en) * 1954-02-17 1956-12-28 Asea Ab Improvements in air blast electric circuit breakers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1203855B (en) * 1960-02-27 1965-10-28 Asea Ab Device for braking the opening movement of the moving contact of a compressed air switch
DE1171973B (en) * 1960-11-02 1964-06-11 Asea Ab Gas pressure switch
DE1230887B (en) * 1961-07-25 1966-12-22 Merlin & Gerin Ste Anonyme Ets Compressed gas switch with a device to prevent arcs from stopping
DE1266853B (en) * 1962-09-26 1968-04-25 Licentia Gmbh Compressed gas switch with a power switching point and a voltage isolating point in series
DE1221332B (en) * 1964-08-21 1966-07-21 Bbc Brown Boveri & Cie Gas pressure switch

Also Published As

Publication number Publication date
BE564461A (en)
FR1198663A (en) 1959-12-09
US2969446A (en) 1961-01-24
DE1062787B (en) 1959-08-06

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