GB1432794A - Electric circuit breakers - Google Patents

Electric circuit breakers

Info

Publication number
GB1432794A
GB1432794A GB2576473A GB2576473A GB1432794A GB 1432794 A GB1432794 A GB 1432794A GB 2576473 A GB2576473 A GB 2576473A GB 2576473 A GB2576473 A GB 2576473A GB 1432794 A GB1432794 A GB 1432794A
Authority
GB
United Kingdom
Prior art keywords
latch
release
contacts
rod
tripping
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
GB2576473A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2576473A priority Critical patent/GB1432794A/en
Priority to BE131736A priority patent/BE800292A/en
Priority to US365102A priority patent/US3873950A/en
Priority to DE2328971A priority patent/DE2328971C3/en
Priority to FR7328554A priority patent/FR2239755B1/fr
Publication of GB1432794A publication Critical patent/GB1432794A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/101—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening with increasing of contact pressure by electrodynamic forces before opening
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • 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
    • H01H2071/507—Latching devices between operating and release mechanism being collapsible, e.g. yielding elastically, when the opening force is higher than a predetermined value

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

1432794 Automatic circuit breakers V Y GUSCHIN 30 May 1973 25764/73 Heading H1N A circuit breaker that opens immediately with a high overload current and also after a time delay with a persistent lesser overload current has: a tripping rod 16 engaged by a latch 14 that, when engaged, prevents a contact opening mechanism 9, 10, 11, 13 from operating; a tripping device 23, 24 (e.g. incorporating a time delay) that can move the tripping rod to release latch 14, which can then rotate and release the contact opening mechanism; electrodynamic means 4, 5, 6, 7 that increases pressure between contacts 2, 3, when closed, in response to current flow through the contacts; the latch 14 being linearly movable against a bias 19 in response to the pressure between the contacts in a direction to release the latch from tripping rod 16, whereby on a current through contacts 2, 3 exceeding a particular value, latch 14 disengages from tripping rod 16 and permits the contact operating mechanism to operate. The contacts may be separated by manual operation of lever 12. Small persistent overload current after a time delay causes device 23 via rod 24 to rotate tripping rod 16 and thus release latch 14 which is then free to rotate under the bias of spring 13 to release lever 11 of the contact opening toggle mechanism 9, 10, 11, 13. Current flowing through contacts 2, 3 also flows through windings 5, 6, so arranged with respect to contact carrying winding 6 pivoted at 7 that an upward force is provided, thus increasing contact pressure. This force is transmitted via linkage 9, 10 and lever 11 to pivot shaft 18 of latch 14. Upward movement of shaft 18 in slots 17 is resisted by spring 19. A particular (high) value of overload current lifts the assembly against the bias of spring 19 such that latch 14 is no longer restrained by tripping rod 16. Latch 14 is thus free to rotate and release the contact opening toggle mechanism. The value of overload current which lifts latch 14 out of engagement with tripping rod 16 is adjustable by means of screw 20 which alters the tension in spring 19. Stop 22 prevents rotation of rod 16 as latch 14 is lifted; this rotation would otherwise prevent release of latch 14.
GB2576473A 1973-05-30 1973-05-30 Electric circuit breakers Expired GB1432794A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB2576473A GB1432794A (en) 1973-05-30 1973-05-30 Electric circuit breakers
BE131736A BE800292A (en) 1973-05-30 1973-05-30 CIRCUIT BREAKER.
US365102A US3873950A (en) 1973-05-30 1973-05-30 Air circuit breaker
DE2328971A DE2328971C3 (en) 1973-05-30 1973-06-07 Electric circuit breaker
FR7328554A FR2239755B1 (en) 1973-05-30 1973-08-03

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB2576473A GB1432794A (en) 1973-05-30 1973-05-30 Electric circuit breakers
BE131736A BE800292A (en) 1973-05-30 1973-05-30 CIRCUIT BREAKER.
US365102A US3873950A (en) 1973-05-30 1973-05-30 Air circuit breaker
DE2328971A DE2328971C3 (en) 1973-05-30 1973-06-07 Electric circuit breaker
FR7328554A FR2239755B1 (en) 1973-05-30 1973-08-03

Publications (1)

Publication Number Publication Date
GB1432794A true GB1432794A (en) 1976-04-22

Family

ID=34753908

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2576473A Expired GB1432794A (en) 1973-05-30 1973-05-30 Electric circuit breakers

Country Status (5)

Country Link
US (1) US3873950A (en)
BE (1) BE800292A (en)
DE (1) DE2328971C3 (en)
FR (1) FR2239755B1 (en)
GB (1) GB1432794A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149216A (en) * 1983-11-02 1985-06-05 Alan Lister Kidd Electric circuit breakers
GB2149215A (en) * 1983-11-02 1985-06-05 Alan Lister Kidd Electric circuit breakers
GB2149578A (en) * 1983-11-02 1985-06-12 Alan Lister Kidd Electric circuit breakers

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511948C3 (en) * 1975-03-19 1978-05-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Current limiting circuit breaker
JPS58131622A (en) * 1982-01-29 1983-08-05 三菱電機株式会社 Gas breaker
DE3614866A1 (en) * 1986-05-02 1987-11-05 Licentia Gmbh CONTACT FOR LOW CURRENT CIRCUIT BREAKERS
US5583328A (en) * 1992-07-02 1996-12-10 Mitsubishi Denki Kabushiki Kaisha High voltage switch including U-shaped, slitted stationary contact assembly with arc extinguishing/magnetic blowout features
FR2744563B1 (en) * 1996-02-06 1998-04-03 Schneider Electric Sa CONTROL MECHANISM OF A CIRCUIT-BREAKER WITH RELEASABLE LOCK ON A SHORT-CIRCUIT
CN101527232B (en) * 2007-12-27 2012-07-18 拿丁有限责任公司 Contact actuating mechanism for switching device
CN101882538B (en) * 2010-06-25 2012-12-26 江苏大全凯帆电器股份有限公司 Protection mechanism of permanent-magnet operating mechanism for circuit breaker
CN104205275B (en) * 2012-03-12 2017-10-20 西门子公司 Breaker trip-proof device, system and operating method
CN103325632B (en) * 2013-07-26 2015-07-29 大全集团有限公司 A kind of can the circuit breaker manipulation mechanism of rapid-releasing
US9412549B2 (en) * 2014-02-18 2016-08-09 General Electric Company Electromagnetically enhanced contact separation in a circuit breaker
FR3036841B1 (en) * 2015-05-28 2017-06-23 Schneider Electric Ind Sas MOBILE POLE AND CUTTING APPARATUS
WO2018189778A1 (en) * 2017-04-10 2018-10-18 三菱電機株式会社 Air circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525959A (en) * 1968-12-05 1970-08-25 Westinghouse Electric Corp Circuit breaker with improved latch reset
US3593234A (en) * 1970-02-09 1971-07-13 Cutler Hammer Inc Trip adjustment means for instantaneous trip circuit breaker
US3777293A (en) * 1972-10-30 1973-12-04 Tokyo Shibaura Electric Co No-fuse circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2149216A (en) * 1983-11-02 1985-06-05 Alan Lister Kidd Electric circuit breakers
GB2149215A (en) * 1983-11-02 1985-06-05 Alan Lister Kidd Electric circuit breakers
GB2149578A (en) * 1983-11-02 1985-06-12 Alan Lister Kidd Electric circuit breakers

Also Published As

Publication number Publication date
DE2328971B2 (en) 1978-08-31
FR2239755B1 (en) 1977-08-19
BE800292A (en) 1973-11-30
DE2328971C3 (en) 1979-05-03
US3873950A (en) 1975-03-25
DE2328971A1 (en) 1975-01-02
FR2239755A1 (en) 1975-02-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee