GB949898A - Electric circuit interrupters - Google Patents

Electric circuit interrupters

Info

Publication number
GB949898A
GB949898A GB1131762A GB1131762A GB949898A GB 949898 A GB949898 A GB 949898A GB 1131762 A GB1131762 A GB 1131762A GB 1131762 A GB1131762 A GB 1131762A GB 949898 A GB949898 A GB 949898A
Authority
GB
United Kingdom
Prior art keywords
tripping
lockout
occurrences
cause
alter
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
GB1131762A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Corp filed Critical Westinghouse Electric Corp
Publication of GB949898A publication Critical patent/GB949898A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H75/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of power reset mechanism
    • H01H75/02—Details
    • H01H75/04—Reset mechanisms for automatically reclosing a limited number of times

Landscapes

  • Breakers (AREA)

Abstract

949,898. Automatic circuit-breakers. WESTINGHOUSE ELECTRIC CORPORATION. April 30, 1962 [May 31, 1961], No. 16317/62. Headings H2B and H2K. A switch comprises a tripping device 15 effective to cause separation of the contacts 12, a counting means 30 which is advanced step-bystep towards the tripping device 15 on each occurrence of a predetermined circuit condition, e.g. excess current, and a member 31 between the counting means 30 and the device 15, the member 31 being movable to alter the number of occurrences necessary to cause tripping in the case of the line sectionalizing switch shown or lockout in the case of an automatic reclosing circuit-breaker. The means 30 is provided with a head 49 having trip surfaces 50, 51 and the member 31 is movable laterally from the position in which it cooperates with the surface 51 to that in which it co-operates with the surface 50 to alter the number of occurrences necessary to cause tripping or lockout. The member 31 is moved against the action of a spring 43 when a coil 39 is energized. The coil may be connected to a voltage transformer 61 so that the number of occurrences to produce tripping or lockout is changed in response to a loss of voltage in the system. Figs. 3 and 4 (not shown) illustrate other arrangements of the head 49.
GB1131762A 1961-05-31 1962-04-30 Electric circuit interrupters Expired GB949898A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11387961A 1961-05-31 1961-05-31

Publications (1)

Publication Number Publication Date
GB949898A true GB949898A (en) 1964-02-19

Family

ID=22352065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1131762A Expired GB949898A (en) 1961-05-31 1962-04-30 Electric circuit interrupters

Country Status (1)

Country Link
GB (1) GB949898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152308A (en) * 1983-12-23 1985-07-31 Matsushita Electric Ind Co Ltd A fault detection apparatus for an air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2152308A (en) * 1983-12-23 1985-07-31 Matsushita Electric Ind Co Ltd A fault detection apparatus for an air conditioner

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