GB978973A - Improvements in and relating to vacuum electric switches - Google Patents

Improvements in and relating to vacuum electric switches

Info

Publication number
GB978973A
GB978973A GB23647/61A GB2364761A GB978973A GB 978973 A GB978973 A GB 978973A GB 23647/61 A GB23647/61 A GB 23647/61A GB 2364761 A GB2364761 A GB 2364761A GB 978973 A GB978973 A GB 978973A
Authority
GB
United Kingdom
Prior art keywords
contacts
electrodes
arcing
parts
conditioned
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
GB23647/61A
Inventor
John Norman Chubb
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB23647/61A priority Critical patent/GB978973A/en
Priority to DEE23110A priority patent/DE1191461B/en
Priority to CH780562A priority patent/CH396143A/en
Priority to FR996263A priority patent/FR1423919A/en
Publication of GB978973A publication Critical patent/GB978973A/en
Priority to US449246A priority patent/US3270172A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/664Contacts; Arc-extinguishing means, e.g. arcing rings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/664Contacts; Arc-extinguishing means, e.g. arcing rings
    • H01H33/6646Contacts; Arc-extinguishing means, e.g. arcing rings having non flat disc-like contact surface

Landscapes

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

Abstract

978,973. Vacuum switches. ENGLISH ELECTRIC CO. Ltd. June 13, 1962 [June 30, 1961], No. 23647/61. Heading H2B. In a vacuum switch parts of the contacts are " current conditioned " by arc discharges under vacuum and the arcing during operation of the switch is restricted to the conditioned areas by stabilizing electrodes between parts of the contacts which have not been conditioned, the electrodes being made of a material having an arcdischarge voltage greater than half the maximum discharge voltage than can occur between the contacts. In Fig. 1 the fixed and moving contacts 10, 11 are surrounded by a cylindrical metal electrode 13 which is insulated from the contacts and has an annular extension 13a which assists in limiting the arcing to the conditional area of the contacts. In Fig. 3 the moving contact 17 engages the final contact 16 in two extreme positions and the electrodes 20, 20<SP>1</SP> have annular extensions 20a. The contacts may be of copper and the electrodes of tungsten or molybdenum or alternatively the electrodes may include " getter " material such as tantalum, zirconium or titanium and have a corrugated surface. The cylinder 13 or plates 20 may be extended to shield other parts of the switch from " line of sight " arcing.
GB23647/61A 1961-06-30 1961-06-30 Improvements in and relating to vacuum electric switches Expired GB978973A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB23647/61A GB978973A (en) 1961-06-30 1961-06-30 Improvements in and relating to vacuum electric switches
DEE23110A DE1191461B (en) 1961-06-30 1962-06-28 Electric vacuum switch
CH780562A CH396143A (en) 1961-06-30 1962-06-28 Electric vacuum switch
FR996263A FR1423919A (en) 1961-06-30 1964-11-25 Electric vacuum switch
US449246A US3270172A (en) 1961-06-30 1965-04-19 Switch having an arc stabilizing electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23647/61A GB978973A (en) 1961-06-30 1961-06-30 Improvements in and relating to vacuum electric switches

Publications (1)

Publication Number Publication Date
GB978973A true GB978973A (en) 1965-01-01

Family

ID=10199018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23647/61A Expired GB978973A (en) 1961-06-30 1961-06-30 Improvements in and relating to vacuum electric switches

Country Status (4)

Country Link
US (1) US3270172A (en)
CH (1) CH396143A (en)
DE (1) DE1191461B (en)
GB (1) GB978973A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1065886A (en) * 1963-10-11 1967-04-19 Ass Elect Ind Improvements relating to vacuum-switch contacts
US3592987A (en) * 1968-03-19 1971-07-13 Westinghouse Electric Corp Gettering arrangements for vacuum-type circuit interrupters comprising fibers of gettering material embedded in a matrix of material of good conductivity
US3590197A (en) * 1968-10-31 1971-06-29 Allis Chalmers Mfg Co Electrical contacts containing gettering material
US3575564A (en) * 1969-09-10 1971-04-20 Allis Chalmers Mfg Co Vacuum-type electric circuit interrupter
US4021628A (en) * 1975-01-20 1977-05-03 Westinghouse Electric Corporation Vacuum fault current limiter
US4135071A (en) * 1976-03-17 1979-01-16 General Electric Company Vacuum circuit interrupter with disc-shaped beryllium contacts

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1784302A (en) * 1926-11-15 1930-12-09 California Inst Of Techn Process for conditioning electric switches
DE596966C (en) * 1930-05-28 1934-05-14 Aeg Device for vacuum switch for degassing the contacts
DE565530C (en) * 1930-09-07 1932-12-01 Siemens Ag Vacuum switch
DE643192C (en) * 1933-02-19 1937-03-31 Siemens Schuckertwerke Akt Ges Electric switch
DE603883C (en) * 1933-03-23 1934-10-10 Bbc Brown Boveri & Cie Switching arrangement
BE412834A (en) * 1934-12-18
IT570073A (en) * 1956-04-17
US2976382A (en) * 1959-06-29 1961-03-21 Gen Electric Arc extinguishing structure for an electric circuit interrupter
US3014110A (en) * 1959-10-29 1961-12-19 Gen Electric Alternating current vacuum circuit interrupter
US7792742B1 (en) * 1999-08-27 2010-09-07 Federal Home Loan Mortgage Corporation Risk-based reference pool capital reducing systems and methods

Also Published As

Publication number Publication date
CH396143A (en) 1965-07-31
DE1191461B (en) 1965-04-22
US3270172A (en) 1966-08-30

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