GB766699A - Improvements in electric isolating switches - Google Patents

Improvements in electric isolating switches

Info

Publication number
GB766699A
GB766699A GB1949254A GB1949254A GB766699A GB 766699 A GB766699 A GB 766699A GB 1949254 A GB1949254 A GB 1949254A GB 1949254 A GB1949254 A GB 1949254A GB 766699 A GB766699 A GB 766699A
Authority
GB
United Kingdom
Prior art keywords
contact
blade
contacts
resistance
fixed
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
GB1949254A
Inventor
Charles Fogden Humphreys
Archibald Hayward Pollard
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB1949254A priority Critical patent/GB766699A/en
Publication of GB766699A publication Critical patent/GB766699A/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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts

Landscapes

  • Elimination Of Static Electricity (AREA)
  • Adjustable Resistors (AREA)

Abstract

766,699. Air-break switches. BRITISH THOMSON-HOUSTON CO., Ltd. July 4, 1955 [July 2, 1954], No. 19492/54. Class 38(5) An air-break isolating switch has a resistance 11 connected in parallel with one of two pairs of series-connected contacts so that on opening the switch any transformer magnetizing or line charging current flowing is reduced by the resistance on the opening of the first pair and finally interrupted by the second pair of contacts. In the arrangement shown, a contact blade 10 mounted on a rotary insulating post 2 co-operates with fixed contacts 5, 6 mounted on fixed insulating posts 1, 3, the contact 6 having an elongated arcuate form so that the blade 10 disengages from the contact 6 after disengaging from the contact 5. The linear or non-linear resistance 11 is carried by a metal bracket 13 fixed to the contact 5 and a metal bracket 14 pivoted at 15 on the rotational axis of the blade 10. The blade 10 may be provided with spring mounted auxiliary " flicker " contacts.
GB1949254A 1954-07-02 1954-07-02 Improvements in electric isolating switches Expired GB766699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1949254A GB766699A (en) 1954-07-02 1954-07-02 Improvements in electric isolating switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1949254A GB766699A (en) 1954-07-02 1954-07-02 Improvements in electric isolating switches

Publications (1)

Publication Number Publication Date
GB766699A true GB766699A (en) 1957-01-23

Family

ID=10130264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1949254A Expired GB766699A (en) 1954-07-02 1954-07-02 Improvements in electric isolating switches

Country Status (1)

Country Link
GB (1) GB766699A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2944911A1 (en) * 2009-04-23 2010-10-29 Areva T & D Sa Electric switch-disconnector for use in lines of medium and high voltage electric energy transmission, has fixing contact fixed in displacement direction by resistor, where value of resistor changes according to position of mobile contact

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2944911A1 (en) * 2009-04-23 2010-10-29 Areva T & D Sa Electric switch-disconnector for use in lines of medium and high voltage electric energy transmission, has fixing contact fixed in displacement direction by resistor, where value of resistor changes according to position of mobile contact

Similar Documents

Publication Publication Date Title
GB702834A (en) Improvements in or relating to a method of electrical arc-extinction in electric circuit-breakers
ATE20287T1 (en) ELECTRICAL SWITCHING DEVICE.
GB766699A (en) Improvements in electric isolating switches
GB1254480A (en) High voltage switch
GB1227729A (en)
GB879669A (en) Improvements in or relating to electric switches
GB1333685A (en) High voltage circuit breaker and method of increasing impedance in a high voltage circuit breaker
GB621565A (en) Improvements in liquid-break electric circuit breakers provided with arc-extinguishing means
GB633543A (en) Improvements in or relating to protective arrangements for electric circuits
GB560769A (en) Arc quenching device for use with current collectors
GB670578A (en) Improvements in or relating to circuit arrangements for electric discharge devices
GB1062893A (en) Improvements relating to the synthetic testing of high voltage electric circuit-breakers
GB789056A (en) Improvements in or relating to electric circuit interrupters
GB795857A (en) Improvements in or relating to arrangements for conducting electric current between relatively movable conducting members
GB747925A (en) Improvements in or relating to electric contact arrangements
GB807551A (en) Improvements in multi-break electrical switches
GB828105A (en) Improvements in and relating to surge diverters
GB748716A (en) Improved electric protective arrangement for use with capacitors
GB1204620A (en) Improvements relating to oil-filled circuit breakers
JPS5466437A (en) Enclosed switchboard
GB601838A (en) Improvements in and relating to electric switches having arc-rupturing devices
GB796101A (en) Improvements in or relating to electric air circuit breakers having arc extinguishing means
GB884293A (en) Improvements in heavy current electric switch contact arrangements
GB560772A (en) Arc quenching device for use with current collectors
GB1025163A (en) A contact arrangement for electrical circuit breakers