GB1438594A - Vapour shield for vacuum-type circuit interrupter - Google Patents

Vapour shield for vacuum-type circuit interrupter

Info

Publication number
GB1438594A
GB1438594A GB3302273A GB3302273A GB1438594A GB 1438594 A GB1438594 A GB 1438594A GB 3302273 A GB3302273 A GB 3302273A GB 3302273 A GB3302273 A GB 3302273A GB 1438594 A GB1438594 A GB 1438594A
Authority
GB
United Kingdom
Prior art keywords
shield
stainless steel
copper
vacuum
envelope
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
GB3302273A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1438594A publication Critical patent/GB1438594A/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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66269—Details relating to the materials used for screens in vacuum switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66284—Details relating to the electrical field properties of screens in vacuum switches
    • 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66292—Details relating to the use of multiple screens in vacuum switches

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

1438594 Vacuum switches WESTING- HOUSE ELECTRIC CORP 11 July 1973 [24 July 1972] 33022/73 Heading H1N In a vacuum switch having an evacuated envelope 2, a pair of separable contacts 8, 9 in the envelope and a vapour-condensing shield 28 to prevent the deposition of metallic particles on to the envelope, the shield is made from two metals, a high conductivity metal, e.g. copper, located adjacent the arcing region and a metal of higher breakdown voltage characteristic, e.g. stainless steel, for the ends of the shield. The shield may be of stainless steel with a copper liner at its central portion, Fig. 3 (not shown) or have stainless steel ends brazed to a copper central section, Fig. 4 (not shown). In further arrangements a copper shield may be provided with rolled stainless steel end portions, Fig. 5 (not shown), or stainless steel beads, Fig. 6 (not shown).
GB3302273A 1972-07-24 1973-07-11 Vapour shield for vacuum-type circuit interrupter Expired GB1438594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27469972A 1972-07-24 1972-07-24

Publications (1)

Publication Number Publication Date
GB1438594A true GB1438594A (en) 1976-06-09

Family

ID=23049263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3302273A Expired GB1438594A (en) 1972-07-24 1973-07-11 Vapour shield for vacuum-type circuit interrupter

Country Status (5)

Country Link
JP (2) JPS4958364A (en)
CA (1) CA1015806A (en)
CH (1) CH567795A5 (en)
DE (1) DE2336944C2 (en)
GB (1) GB1438594A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363937U (en) * 1986-10-16 1988-04-27
DE3932159A1 (en) * 1989-09-27 1991-04-04 Calor Emag Elektrizitaets Ag Vacuum switch chamber for HV switch - has spring steel elements projecting from ring fitted to central section of condensation screen
JP5451500B2 (en) * 2010-04-13 2014-03-26 三菱電機株式会社 Vacuum valve
JP6178563B2 (en) * 2012-11-21 2017-08-09 株式会社東芝 Vacuum valve
DE102019216900A1 (en) * 2019-11-01 2021-05-06 Siemens Aktiengesellschaft Shielding element for shielding an insulator from a contact disk that is movable in the axial direction and an immovable contact disk in a vacuum switching element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163734A (en) * 1962-01-26 1964-12-29 Gen Electric Vacuum-type circuit interrupter with improved vapor-condensing shielding
US3345484A (en) * 1965-05-10 1967-10-03 Gen Electric Shielding for a vacuum type circuit interrupter
JPS5022231U (en) * 1973-06-22 1975-03-13
JPS5022231A (en) * 1973-07-03 1975-03-10

Also Published As

Publication number Publication date
JPS54172277U (en) 1979-12-05
JPS4958364A (en) 1974-06-06
DE2336944C2 (en) 1982-11-11
DE2336944A1 (en) 1974-02-07
CA1015806A (en) 1977-08-16
CH567795A5 (en) 1975-10-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee