GB764271A - Improvements in or relating to arc extinguishing devices in or for electric switch apparatus - Google Patents

Improvements in or relating to arc extinguishing devices in or for electric switch apparatus

Info

Publication number
GB764271A
GB764271A GB3066/55A GB306655A GB764271A GB 764271 A GB764271 A GB 764271A GB 3066/55 A GB3066/55 A GB 3066/55A GB 306655 A GB306655 A GB 306655A GB 764271 A GB764271 A GB 764271A
Authority
GB
United Kingdom
Prior art keywords
arc
box
feb
contacts
permanent magnet
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
GB3066/55A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB764271A publication Critical patent/GB764271A/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
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

764,271. Arc-rupturing in switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 2, 1955 [Feb. 8, 1954; Feb. 8, 1954], No. 3066/55. Class 38(5) An arc-chute or arc box has at least its opposed side sections constituted by parmanent magnets formed of electrical insulating non-metallic permanent magnet material producing a magnetic field laterally within the box or chute. The material may be a mixed oxide compound selected from the group BaO.6Fe 2 O 3 , PbO.6Fe 2 O 3 and SrO.6Fe 2 O 3 . In Fig. 8 a double-break switch has an insulating arc box 9 with inserts 11, 13 of the permanent magnet material magnetized so as to produce a magnetic field across the gaps between the contacts. An arcing cup 33 of magnetic material may surround the lower part of a movable contact bridge 7 and the lower fixed contact 37 so as to confine and restrict the lower arc drawn between contacts 7 and 37 whilst the upper arc drawn between contacts 7 and 35 is extended and blown out by the magnetic field between the inserts. Figs. 1 to 7 (not shown) illustrate various arrangements in which the whole arc box is of the permanent magnet material. Notched grid plates of fibre, non-magnetic metal or ceramic may be provided. Specification 708,127 [Group XXXV] is referred to.
GB3066/55A 1954-02-08 1955-02-02 Improvements in or relating to arc extinguishing devices in or for electric switch apparatus Expired GB764271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US408910A US2875302A (en) 1954-02-08 1954-02-08 Circuit interrupter

Publications (1)

Publication Number Publication Date
GB764271A true GB764271A (en) 1956-12-19

Family

ID=23618274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3066/55A Expired GB764271A (en) 1954-02-08 1955-02-02 Improvements in or relating to arc extinguishing devices in or for electric switch apparatus

Country Status (2)

Country Link
US (1) US2875302A (en)
GB (1) GB764271A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194918A (en) * 1963-10-04 1965-07-13 Anthony J Muscante Contactor for electric torpedoes
US3480892A (en) * 1966-07-07 1969-11-25 Omron Tateisi Electronics Co Electromagnetic relay for switching an electric circuit
US3736544A (en) * 1971-07-16 1973-05-29 Vapor Corp High voltage temperature switch
DE2344365C3 (en) * 1973-09-03 1983-06-01 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Blown electromagnetic relay
CH653477A5 (en) * 1980-01-11 1985-12-31 Sprecher & Schuh Ag BLOW NOZZLE FOR A PRESSURE GAS SWITCH.
FR2840727B1 (en) * 2002-06-07 2006-01-06 Dav MICROCONTACT WITH REDUCED GAP

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101665A (en) * 1935-11-19 1937-12-07 Gen Electric Synchronous motor
US2332446A (en) * 1941-01-13 1943-10-19 Allen Bradley Co Permanent magnet blowout for electric switches
US2337949A (en) * 1942-05-29 1943-12-28 Gen Electric Circuit breaker
US2524287A (en) * 1945-01-19 1950-10-03 Westinghouse Electric Corp Circuit interrupter
US2575060A (en) * 1947-08-07 1951-11-13 Allen Bradley Co Arc interrupter for electric switches
NL156497C (en) * 1949-10-29

Also Published As

Publication number Publication date
US2875302A (en) 1959-02-24

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