GB1182955A - Improvements in Electric Circuit Breakers. - Google Patents

Improvements in Electric Circuit Breakers.

Info

Publication number
GB1182955A
GB1182955A GB52339/67A GB5233967A GB1182955A GB 1182955 A GB1182955 A GB 1182955A GB 52339/67 A GB52339/67 A GB 52339/67A GB 5233967 A GB5233967 A GB 5233967A GB 1182955 A GB1182955 A GB 1182955A
Authority
GB
United Kingdom
Prior art keywords
series
current
resistor
contacts
arc
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
GB52339/67A
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 GB1182955A publication Critical patent/GB1182955A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • 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
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating disconnection

Landscapes

  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1,182,955. Arcing preventing in switches. GENERAL ELECTRIC CO. 17 Nov., 1967 [20 Feb., 1967], No. 52339/67. Heading H1N. A current limiting circuit breaker comprises a solenoid and/or bimetal actuated, mechanically operable contactor mechanism including fixed contacts 11a, 11b, a movable contact 12 and e.g. a solenoid actuating winding 13 which, upon overcurrent, physically separates the contacts which are in series with a load 15 and a current limiting device 17 of the self-resetting vaporizable conductor type, such as that described in U.S.A. Patent 3,117,203. The device 17 is filled with a vaporizable conducting material which, upon excessive current, vaporizes to establish a high resistance steady state arc which reduces current flow through the device to some predetermined low level which is insufficient to sustain the arc appearing when the contacts 11a 11b, 12, are physically separated. A current diverter 18 comprising a resistor 19 and inductor 22 in series is provided. The resistor 19 could comprise a positive temperature coefficient resistor, and a capacitor may be included in the circuit. The winding 13 may alternatively be connected in series with a limiting impedance 29, Fig. 3, (not shown), across the load 15. The contactor has a conventional magnetic blow out coil and arc shoot arrangement, and movable contact 12 is manually closable.
GB52339/67A 1967-02-20 1967-11-17 Improvements in Electric Circuit Breakers. Expired GB1182955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61714867A 1967-02-20 1967-02-20

Publications (1)

Publication Number Publication Date
GB1182955A true GB1182955A (en) 1970-03-04

Family

ID=24472460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52339/67A Expired GB1182955A (en) 1967-02-20 1967-11-17 Improvements in Electric Circuit Breakers.

Country Status (2)

Country Link
US (1) US3454831A (en)
GB (1) GB1182955A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703664A (en) * 1970-10-05 1972-11-21 Ite Imperial Corp Fault current limiter using superconductive element
DE2421885A1 (en) * 1974-05-07 1975-11-20 Kind Dieter Prof Dr Ing SWITCHING ARRANGEMENT FOR HIGH VOLTAGE DC AND AC CURRENTS
US4236186A (en) * 1979-01-17 1980-11-25 Mitsubishi Denki Kabushiki Kaisha Power breaker system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519760A (en) * 1952-05-07
US3238418A (en) * 1962-06-25 1966-03-01 Gen Electric Electrical protective circuit

Also Published As

Publication number Publication date
US3454831A (en) 1969-07-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees