GB1027786A - Improvements in vacuum type electric circuit interrupters - Google Patents

Improvements in vacuum type electric circuit interrupters

Info

Publication number
GB1027786A
GB1027786A GB473565A GB473565A GB1027786A GB 1027786 A GB1027786 A GB 1027786A GB 473565 A GB473565 A GB 473565A GB 473565 A GB473565 A GB 473565A GB 1027786 A GB1027786 A GB 1027786A
Authority
GB
United Kingdom
Prior art keywords
shields
contacts
looped
envelope
gap
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
GB473565A
Inventor
Charles Hoff Titus
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to GB473565A priority Critical patent/GB1027786A/en
Publication of GB1027786A publication Critical patent/GB1027786A/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
    • H01H2033/66284—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

1,027,786. Vacuum switches. GENERAL ELECTRIC CO. Feb. 3, 1965, No. 4735/65. Heading H2B. To prevent the deposition of conducting particles on to the insulating portions of the envelope of a vacuum switch, spaced tubular metallic shields 40, 44 surround the contacts 26, 28 and the gap between the shields is surrounded by a further shield 42. The shields are electrically insulated from one another and from the contacts. The gap between the shields 40, 44 is slightly larger than that between the opened contacts and the ends of the shields 40, 44 are looped at 70, 71 so that should an arc be blown from the contacts on to the shields, the resulting current path would provide a magnetic field to bow the arc back towards the contacts. Further shields 46, 48, 76, 78 may be provided to reduce deposition, the shields all having looped or curled ends to reduce electric stress concentrations and the capacitances between the shields providing satisfactory voltage distribution along the envelope.
GB473565A 1965-02-03 1965-02-03 Improvements in vacuum type electric circuit interrupters Expired GB1027786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB473565A GB1027786A (en) 1965-02-03 1965-02-03 Improvements in vacuum type electric circuit interrupters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB473565A GB1027786A (en) 1965-02-03 1965-02-03 Improvements in vacuum type electric circuit interrupters

Publications (1)

Publication Number Publication Date
GB1027786A true GB1027786A (en) 1966-04-27

Family

ID=9782816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB473565A Expired GB1027786A (en) 1965-02-03 1965-02-03 Improvements in vacuum type electric circuit interrupters

Country Status (1)

Country Link
GB (1) GB1027786A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154065A (en) * 1984-02-02 1985-08-29 Westinghouse Electric Corp Vacuum switch
EP0309978A2 (en) * 1987-09-29 1989-04-05 Mitsubishi Denki Kabushiki Kaisha Vacuum discharge device
FR2887683A1 (en) * 2005-06-28 2006-12-29 Schneider Electric Ind Sas VACUUM BULB FOR AN ELECTRICAL PROTECTION DEVICE SUCH AS A SWITCH OR CIRCUIT BREAKER
US8698034B2 (en) 2010-05-13 2014-04-15 Lsis Co., Ltd. Vacuum interrupter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154065A (en) * 1984-02-02 1985-08-29 Westinghouse Electric Corp Vacuum switch
EP0309978A2 (en) * 1987-09-29 1989-04-05 Mitsubishi Denki Kabushiki Kaisha Vacuum discharge device
EP0309978A3 (en) * 1987-09-29 1989-07-26 Mitsubishi Denki Kabushiki Kaisha Vacuum discharge device
FR2887683A1 (en) * 2005-06-28 2006-12-29 Schneider Electric Ind Sas VACUUM BULB FOR AN ELECTRICAL PROTECTION DEVICE SUCH AS A SWITCH OR CIRCUIT BREAKER
WO2007003727A1 (en) 2005-06-28 2007-01-11 Schneider Electric Industries Sas Vacuum bulb for an electrical protection apparatus, such as a switch or a circuit breaker
US8445804B2 (en) 2005-06-28 2013-05-21 Schneider Electric Industries Sas Vacuum cartridge for an electrical protection apparatus such as a switch or a circuit breaker
CN104299838A (en) * 2005-06-28 2015-01-21 施耐德电器工业公司 Vacuum bulb for an electrical protection apparatus, such as a switch or a circuit breaker
US8698034B2 (en) 2010-05-13 2014-04-15 Lsis Co., Ltd. Vacuum interrupter

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