GB588702A - Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type - Google Patents

Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type

Info

Publication number
GB588702A
GB588702A GB547145A GB547145A GB588702A GB 588702 A GB588702 A GB 588702A GB 547145 A GB547145 A GB 547145A GB 547145 A GB547145 A GB 547145A GB 588702 A GB588702 A GB 588702A
Authority
GB
United Kingdom
Prior art keywords
gas
blast
contact
pressure
valve
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
GB547145A
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.)
A Reyrolle and Co Ltd
Original Assignee
A Reyrolle and 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 A Reyrolle and Co Ltd filed Critical A Reyrolle and Co Ltd
Priority to GB547145A priority Critical patent/GB588702A/en
Publication of GB588702A publication Critical patent/GB588702A/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
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Abstract

588,702. Gas-blast switches. REYROLLE & CO., Ltd., A., and CHRISTIE, J. March 5, 1945, No. 5471. [Class 38 (v)] A gas-blast switch has its pneumaticallyoperated contact B prevented from moving until adequate blast pressure is built up in the casing A. Pressure is communicated by pipe F<4> to an adjustable spring-loaded valve F, which by exposing a greater area to the gas when the piston lifts off its seating F<6>, snaps back, allowing pressure to pass to the contact-actuating piston B' via port F<1> and pipe F<2>. The are thus formed is blown through an arc-resisting, metal nozzle so as to extend between contacts E, D, When the blast is shut off, a spring F' closes valve F, venting port F<1> to atmosphere via port F'. In an arrangement with two breaks exhausting through a common vent, Fig. 2 (not shown), two contact-actuating pistons are controlled by one valve to ensure simultaneous opening.
GB547145A 1945-03-05 1945-03-05 Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type Expired GB588702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB547145A GB588702A (en) 1945-03-05 1945-03-05 Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB547145A GB588702A (en) 1945-03-05 1945-03-05 Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type

Publications (1)

Publication Number Publication Date
GB588702A true GB588702A (en) 1947-05-30

Family

ID=9796805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB547145A Expired GB588702A (en) 1945-03-05 1945-03-05 Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type

Country Status (1)

Country Link
GB (1) GB588702A (en)

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