GB426200A - Improvements in and relating to tripping mechanism for electric circuit-breakers - Google Patents

Improvements in and relating to tripping mechanism for electric circuit-breakers

Info

Publication number
GB426200A
GB426200A GB25772/33A GB2577233A GB426200A GB 426200 A GB426200 A GB 426200A GB 25772/33 A GB25772/33 A GB 25772/33A GB 2577233 A GB2577233 A GB 2577233A GB 426200 A GB426200 A GB 426200A
Authority
GB
United Kingdom
Prior art keywords
tripping
link
circuit
linkage
locking member
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
GB25772/33A
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 GB426200A publication Critical patent/GB426200A/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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H01H2071/508—Latching devices between operating and release mechanism with serial latches, e.g. primary latch latched by secondary latch for requiring a smaller trip force

Landscapes

  • Breakers (AREA)

Abstract

426,200. Automatic circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thumim, C. ; P.O. Box 5312, Philadelphia, U.S.A.) Sept. 18, 1933, No. 25772. Convention date, Sept. 20, 1932. [Class 38 (v)] Operatingmechanism for an automatic circuitbreaker comprises a collapsable thrust - transmitting toggle structure 1 and a tripping toggle linkage 5, the latter being rendered sensitive to comparatively small tripping forces by means of a restraining member 6 having a cam-surfaced notch 23 engaging a member of said linkage, a locking member 7 for the restraining member, and tripping means for the locking member. The actuating rod 3 of the circuit-breaker is connected through a pivoted lever 14 and link 15 to a link 8 pivoted at 9 to one end of the tripping toggle 5 and to a link 10 having a fixed pivot 11. The circuit-breaker is closed by energizing a winding 2, the plunger 2<1> engaging a roller 12 carried by the link 8 and raising the parts into the position shown, where they are held by a spring-controlled prop 4 which snaps under the pivot pin 13 of the roller 12. The locking member may be operated directly by a current coil 28, or indirectly, through a lever 29, by a voltage coil 30, to release the restraining member 6, whereupon the structure 1 collapses and the circuit-breaker opens. During the opening movement, a member 31 carried by one of the members of the tripping toggle linkage 5, temporarily holds the locking member 7 and permits automatic resetting of the linkage 5. Reference has been directed by the Comptroller to Specification 221,478, [Class 38 (v)].
GB25772/33A 1932-09-20 1933-09-18 Improvements in and relating to tripping mechanism for electric circuit-breakers Expired GB426200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US426200XA 1932-09-20 1932-09-20

Publications (1)

Publication Number Publication Date
GB426200A true GB426200A (en) 1935-03-18

Family

ID=21922883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25772/33A Expired GB426200A (en) 1932-09-20 1933-09-18 Improvements in and relating to tripping mechanism for electric circuit-breakers

Country Status (1)

Country Link
GB (1) GB426200A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107314903A (en) * 2017-08-18 2017-11-03 嘉利特荏原泵业有限公司 Steam turbine dropout body overspeed trip analogue means
EP3316275A1 (en) * 2016-10-25 2018-05-02 ABB Schweiz AG A latching device and an operating mechanism with such a latching device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3316275A1 (en) * 2016-10-25 2018-05-02 ABB Schweiz AG A latching device and an operating mechanism with such a latching device
WO2018077556A1 (en) * 2016-10-25 2018-05-03 Abb Schweiz Ag A latching device and an operating mechanism with such a latching device
RU2704003C1 (en) * 2016-10-25 2019-10-23 Абб Швайц Аг Latching device and drive mechanism with such latching device
US10937618B2 (en) 2016-10-25 2021-03-02 Abb Power Grids Switzerland Ag Latching device and an operating mechanism with such a latching device
CN107314903A (en) * 2017-08-18 2017-11-03 嘉利特荏原泵业有限公司 Steam turbine dropout body overspeed trip analogue means

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