GB191280A - Improvements in and relating to electric circuit breakers - Google Patents

Improvements in and relating to electric circuit breakers

Info

Publication number
GB191280A
GB191280A GB3494421A GB3494421A GB191280A GB 191280 A GB191280 A GB 191280A GB 3494421 A GB3494421 A GB 3494421A GB 3494421 A GB3494421 A GB 3494421A GB 191280 A GB191280 A GB 191280A
Authority
GB
United Kingdom
Prior art keywords
oil
switch
plates
spring
vaporizes
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
GB3494421A
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
Publication of GB191280A publication Critical patent/GB191280A/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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H01H33/121—Load break switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/12—Adjustable resistors adjustable by mechanical pressure or force by changing surface pressure between resistive masses or resistive and conductive masses, e.g. pile type
    • 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
    • H01H33/161—Variable impedances

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

191,280. British Thomson - Houston Co., Ltd., (General Electric Co.). Dec. 29, 1921. Sparking-preventing.- Means for interrupting a circuit comprise two switches 15, 16, of which one, 15, is shunted by a series of carbon plates 10, normally pressed together by a spring 11, and immersed in oil or similar insulating fluid 13 in a vessel 14. The switch 15, which is preferably of the oil-breaker type, is opened first and the current transferred to the carbon pile. The heat so formed vaporizes the oil and forces the plates 10 apart. The arc formed further vaporizes the oil and separates the plates so far that the circuit is broken. The switch 16 is opened before the spring 11 returns the plates to their initial position. To re-close, the switch 15 is closed before the switch 16. The plates 10 may be of any material furnishing sufficient contact resistance to vaporize the oil, and may be held in contact, as by a toggle which is tripped when the switch 15 opens.
GB3494421A 1921-09-14 1921-12-29 Improvements in and relating to electric circuit breakers Expired GB191280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50048521 US1717260A (en) 1921-09-14 1921-09-14 Circuit interrupter

Publications (1)

Publication Number Publication Date
GB191280A true GB191280A (en) 1923-01-11

Family

ID=10371884

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3494421A Expired GB191280A (en) 1921-09-14 1921-12-29 Improvements in and relating to electric circuit breakers

Country Status (3)

Country Link
US (1) US1717260A (en)
FR (1) FR555572A (en)
GB (1) GB191280A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL60797C (en) * 1944-01-25
US2470628A (en) * 1944-05-24 1949-05-17 Westinghouse Electric Corp Circuit interrupter
US2701831A (en) * 1950-06-27 1955-02-08 British Thomson Houston Co Ltd Electric circuit breaker
NL178125C (en) * 1952-05-07 Maggi Ag METHOD FOR PREPARING AN AROMA DUST.
US2724755A (en) * 1952-12-26 1955-11-22 Ibm Carbon circuit breaker
DE1024143B (en) * 1954-04-30 1958-02-13 Siemens Ag Arrangement for switching off a direct current circuit
US2924752A (en) * 1957-07-12 1960-02-09 Ite Circuit Breaker Ltd Combined circuit breaker and short circuiter
US3192338A (en) * 1962-07-24 1965-06-29 Robert E Haynes Maximum fault current limiting electrical circuit-breaker
US3249810A (en) * 1962-11-20 1966-05-03 Westinghouse Electric Corp Circuit interrupting apparatus
US3764851A (en) * 1972-10-13 1973-10-09 Westinghouse Electric Corp Current limiting device

Also Published As

Publication number Publication date
FR555572A (en) 1923-07-03
US1717260A (en) 1929-06-11

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