GB904393A - Improvements in air-blast electric circuit breakers - Google Patents

Improvements in air-blast electric circuit breakers

Info

Publication number
GB904393A
GB904393A GB27932/60A GB2793260A GB904393A GB 904393 A GB904393 A GB 904393A GB 27932/60 A GB27932/60 A GB 27932/60A GB 2793260 A GB2793260 A GB 2793260A GB 904393 A GB904393 A GB 904393A
Authority
GB
United Kingdom
Prior art keywords
compressed air
air
switch
valve
supply
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
GB27932/60A
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 GB904393A publication Critical patent/GB904393A/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
    • H01H33/56—Gas reservoirs
    • 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
    • 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
    • H01H33/83—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 wherein the contacts are opened by the flow of air or gas

Landscapes

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

Abstract

904,393. Air-blast switches. ALLMANNA SVENSKA ELEKRISKA A.B. Aug. 12, 1960 [Aug. 13, 1959; May 7, 1960], No. 27932/60. Class 38 (5). In an air-blast switch having a plurality of insulating columns 3 each carrying an extinguishing chamber 1 housing a " breaking gap," the insulating columns and the chambers being filled with compressed air when the switch is opened and closed, the supply of compressed air is limited by throttling means which, when the switch is opened, are opened for a short time to effect rapid refilling of the columns and chambers with compressed air. Thus, in the event of damage to a column or chamber, the loss of compressed air from the rest of the switch is prevented. In the arrangement shown the throttling means each comprise a valve member 8 normally closed by a spring 11 and having a small channel 37 through which compressed air is supplied to the associated column 3. To open the switch a valve 39 is operated to supply compressed air to a pipe 2 connected to the switch operating mechanisms and to supply compressed air to a cylinder containing a piston 44. This piston operates a valve 13 to vent cylinders 10 to atmosphere so that the compressed air acting on pistons 9 opens the valve members 8 to permit a full supply of compressed air to the columns 3 and chambers 1. After a short time the pressures on both sides of the piston 44 are equalized by air passing through a channel 38, so that the valve 13 is restored to the position shown in which compressed air is supplied to the cylinders 10 and the valve members 8 are closed. To permit the switch to be initially filled with compressed air a cock 42 and non-return valves 43 are provided. In an alternative arrangement, Fig. 1 (not shown), provision is made for opening the valve members 8 without air being supplied to the control air pipe 2.
GB27932/60A 1959-08-13 1960-08-12 Improvements in air-blast electric circuit breakers Expired GB904393A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE754859 1959-08-13
SE453960 1960-05-07

Publications (1)

Publication Number Publication Date
GB904393A true GB904393A (en) 1962-08-29

Family

ID=26654535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27932/60A Expired GB904393A (en) 1959-08-13 1960-08-12 Improvements in air-blast electric circuit breakers

Country Status (4)

Country Link
US (1) US3141942A (en)
CH (1) CH378391A (en)
DE (1) DE1174876B (en)
GB (1) GB904393A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL146975B (en) * 1968-06-20 1975-08-15 Coq Bv CAPSULED PRESSURE GAS SWITCH, USING ONLY FOR INTERRUPTING A CIRCUIT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE549793A (en) * 1955-07-26
DE1020710B (en) * 1955-09-22 1957-12-12 Voigt & Haeffner Ag Compressed air switch with multiple interruptions per pole
DE1026348B (en) * 1955-12-03 1958-03-20 Siemens Ag Diverter switch with snap switch, especially for transformers on electric traction vehicles
DE1073578B (en) * 1959-10-23 1960-01-21 Aktiengesellschaft Brown Boveri 6. Cie Baden (Schweiz) Pressure switch

Also Published As

Publication number Publication date
US3141942A (en) 1964-07-21
DE1174876B (en) 1964-07-30
CH378391A (en) 1964-06-15

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