GB714538A - Improvements in or relating to air blast electric circuit breakers - Google Patents

Improvements in or relating to air blast electric circuit breakers

Info

Publication number
GB714538A
GB714538A GB14296/52A GB1429652A GB714538A GB 714538 A GB714538 A GB 714538A GB 14296/52 A GB14296/52 A GB 14296/52A GB 1429652 A GB1429652 A GB 1429652A GB 714538 A GB714538 A GB 714538A
Authority
GB
United Kingdom
Prior art keywords
blast
open
piston
valve
insulator
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
GB14296/52A
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 GB714538A publication Critical patent/GB714538A/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
    • 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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H01H33/125—Load break switches comprising a separate circuit breaker
    • 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
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Landscapes

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

Abstract

714,538. Air-blast switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. June 6, 1952 [June 7, 1951], No. 14296/52. Class 38(5) In an air-blast switch having a rod-like contact 5 fixed at its lower end in a tubular insulator 4 and a movable contact 14 fixed to an operating piston 15 in a cylinder 16 mounted on the insulator, the single tubular insulator 4 serves as a blast passage and insulates the contacts from each other and from earth. The lower end of the contact 5 may be formed as a fixing plate which is secured to the inner wall of the insulator by bolts 6. A 'bracket 7 on which the arm 8 of a disconnecting switch is pivoted, may also be secured to the insulator by the bolts 6. To open the switch, a coil 22 is energized to open a pilot valve 12 so that compressed air in a container 1 is able to force down a piston 26 to open the blast valve 27. The air blast moves the piston 15 against the bias of a spring 17 to open the contacts 5, 14, the arc drawn being extinguished by the air blast through the contact 14. After the valve 27. has been opened, compressed air flowing through a passage 24 acts on a piston 23 to open the disconnecting switch 8, 9. On the closing of the valve 27, the contacts 5, 14 automatically reclose and a valve 25 may then be actuated to admit compressed air above the piston 23 to reclose the isolating switch 8, 9.
GB14296/52A 1951-06-07 1952-06-06 Improvements in or relating to air blast electric circuit breakers Expired GB714538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE308104X 1951-06-07

Publications (1)

Publication Number Publication Date
GB714538A true GB714538A (en) 1954-09-01

Family

ID=20307577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14296/52A Expired GB714538A (en) 1951-06-07 1952-06-06 Improvements in or relating to air blast electric circuit breakers

Country Status (4)

Country Link
CH (1) CH308104A (en)
DE (1) DE1003320B (en)
FR (1) FR1056183A (en)
GB (1) GB714538A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE597038C (en) * 1927-08-31 1934-05-19 Sigwart Ruppel Dipl Ing Switch with arc extinguishing by compressed gas
DE633945C (en) * 1933-07-28 1936-08-13 Voigt & Haeffner Akt Ges Compressed gas switch
DE690204C (en) * 1935-10-24 1940-04-18 Frida Strauss Geb Ruppel Electrical switch with main and secondary contacts
DE678747C (en) * 1937-08-20 1939-07-21 Aeg Device for extinguishing high-voltage alternating current arcs
CH201415A (en) * 1937-10-09 1938-11-30 Oerlikon Maschf Circuit breaker.

Also Published As

Publication number Publication date
DE1003320B (en) 1957-02-28
FR1056183A (en) 1954-02-24
CH308104A (en) 1955-06-30

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