GB275208A - Improvements in and relating to electric circuit interrupters - Google Patents

Improvements in and relating to electric circuit interrupters

Info

Publication number
GB275208A
GB275208A GB18697/27A GB1869727A GB275208A GB 275208 A GB275208 A GB 275208A GB 18697/27 A GB18697/27 A GB 18697/27A GB 1869727 A GB1869727 A GB 1869727A GB 275208 A GB275208 A GB 275208A
Authority
GB
United Kingdom
Prior art keywords
coil
switch
blow
short
relating
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
GB18697/27A
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
Publication of GB275208A publication Critical patent/GB275208A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

275,208. British Thomson-Houston Co.,. Ltd., (Assignees of Paul, W. E.). July 28, 1926, [Convention date]. Magnetic blow-outs. -The blow-out coil 16, which is included in circuit with the auxiliary contacts 14, 15 when the switch opens, is surrounded by a winding 22 which is short-circuited bv a contact 24 when the switch is closed and for a short period after the main contact 10 has opened. The winding 22 when short circuited, serves to reduce the impedance of the coil 16 and thereby prevents sparking at the main contact 10. The switch 24 opens before the auxiliary contacts 14, 15 separate and the coil 16 then exerts its full magnetic powers to blow out the arc.
GB18697/27A 1926-07-28 1927-07-14 Improvements in and relating to electric circuit interrupters Expired GB275208A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US125570A US1745187A (en) 1926-07-28 1926-07-28 Circuit interrupter

Publications (1)

Publication Number Publication Date
GB275208A true GB275208A (en) 1928-03-01

Family

ID=22420351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18697/27A Expired GB275208A (en) 1926-07-28 1927-07-14 Improvements in and relating to electric circuit interrupters

Country Status (3)

Country Link
US (1) US1745187A (en)
BE (1) BE343786A (en)
GB (1) GB275208A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611060A (en) * 1945-10-20 1952-09-16 Monitor Controller Co Circuit controlling apparatus
US2697154A (en) * 1951-05-26 1954-12-14 Westinghouse Electric Corp Circuit interrupter

Also Published As

Publication number Publication date
US1745187A (en) 1930-01-28
BE343786A (en)

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