GB1412705A - Circuit interrupter comprising electromagnetic opening means - Google Patents

Circuit interrupter comprising electromagnetic opening means

Info

Publication number
GB1412705A
GB1412705A GB5590973A GB5590973A GB1412705A GB 1412705 A GB1412705 A GB 1412705A GB 5590973 A GB5590973 A GB 5590973A GB 5590973 A GB5590973 A GB 5590973A GB 1412705 A GB1412705 A GB 1412705A
Authority
GB
United Kingdom
Prior art keywords
magnetic
contact arm
contact
slot
core
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
GB5590973A
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 GB1412705A publication Critical patent/GB1412705A/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
    • H01H77/107—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 characterised by the blow-off force generating means, e.g. current loops
    • H01H77/108—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 characterised by the blow-off force generating means, e.g. current loops comprising magnetisable elements, e.g. flux concentrator, linear slot motor
    • 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
    • H01H77/06—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 electromagnetic opening

Landscapes

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

Abstract

1412705 Overload circuit breaker WESTINGHOUSE ELECTRIC CORP 3 Dec 1973 [1 Dec 1972] 55909/73 Heading H1N A circuit interrupter has at least one pole unit in which contact separation is achieved by locating a contact arm in the entrance of a slot in a magnetic drive unit, comprising a core of magnetic material, in such a way that a predetermined overload current passing through the contact arm produces a flux in the magnetic core which causes the contact arm to be driven into the slot, thus separating the contacts. A three-pole circuit breaker comprises two series-connected units, the first being a storedenergy type circuit breaker 7 which is the subject-matter of Specification 1,263,819. This breaker trips at a first level of overload current by action of a bimetallic strip 51 and at a second level of overload by magnetic attraction of an armature 55, movement of either of these causing release of the latching mechanism 21. The second unit is the magnetic-drive interrupter of the invention 9, comprising three identical pole units 77 in each of which the magnetic-drive consists of a laminated U-shaped core 133 with a slot 137 the inner end of which is tapered so that a contact arm 93, lying in the mouth of the slot, can pivot into it when attracted by the magnetic flux (indicated by the arrowed circulation lies in Fig. 3) which results from current flowing through the contact arm. The contact arm 93 carries a moving contact 91 co-operating with fixed contact 83; it is mounted on a pivot 95 and has a latch extension 97 which engages in a latch 99 when the contact arm is in the fully open position against the abutment 146. The attractive force of the magnetic drive is resisted by a spring 101 which is overcome when the overload current reaches a third predetermined value higher than either of those at which operation of the thermal or magnetic actuating devices of the series circuit-breaker 7 is initiated. Arcing plates 145 and a re-set button 111 are provided. In a modification (Figs. 4 and 5, not shown) the fixed contact is replaced by a second moving contact carried on a second contact arm disposed in the mouth of a second magnetic-drive unit the two assemblies being in mirror-image arrangement and the two contact arms being linked by gearing at their pivots to ensure simultaneous operation. In a further modification (Figs. 6 and 7, not shown) the slot in the magnetic core is widened at its inner end to become T-shaped and the flexible conductor between the incoming terminal and the contact arm is wound around the yoke portion of the core, the turns being accommodated in the widened portion of the slot.
GB5590973A 1972-12-01 1973-12-03 Circuit interrupter comprising electromagnetic opening means Expired GB1412705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00331077A US3815059A (en) 1972-12-01 1972-12-01 Circuit interrupter comprising electromagnetic opening means

Publications (1)

Publication Number Publication Date
GB1412705A true GB1412705A (en) 1975-11-05

Family

ID=23205289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5590973A Expired GB1412705A (en) 1972-12-01 1973-12-03 Circuit interrupter comprising electromagnetic opening means

Country Status (14)

Country Link
US (1) US3815059A (en)
JP (1) JPS5345256Y2 (en)
AR (1) AR201297A1 (en)
BE (1) BE808016A (en)
BR (1) BR7309229D0 (en)
CA (1) CA985722A (en)
CH (1) CH583968A5 (en)
DE (1) DE2360439B2 (en)
ES (1) ES420998A1 (en)
FR (1) FR2209203B1 (en)
GB (1) GB1412705A (en)
IT (1) IT1002055B (en)
PH (1) PH11797A (en)
ZA (1) ZA738632B (en)

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CN114878953A (en) * 2022-07-07 2022-08-09 国网辽宁省电力有限公司 Relay protection outlet matrix tester

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US3991391A (en) * 1974-01-29 1976-11-09 Westinghouse Electric Corporation Circuit interrupter with electromagnetic opening means
US3943473A (en) * 1974-04-29 1976-03-09 Square D Company Current limiting circuit breaker
US3943472A (en) * 1974-04-29 1976-03-09 Square D Company Current limiting circuit breaker
US3999155A (en) * 1974-09-25 1976-12-21 Westinghouse Electric Corporation Circuit interrupter including a current-limiting reactor
US4056798A (en) * 1975-09-23 1977-11-01 Westinghouse Electric Corporation Current limiting circuit breaker
US4025883A (en) * 1975-11-11 1977-05-24 Westinghouse Electric Corporation Modular integral motor controller
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US4144513A (en) * 1977-08-18 1979-03-13 Gould Inc. Anti-rebound latch for current limiting switches
US4247746A (en) * 1977-10-04 1981-01-27 Dorman Smith Switchgear Limited Electric circuit breaker
FR2421458A1 (en) * 1978-03-31 1979-10-26 Merlin Gerin MULTIPOLAR CIRCUIT BREAKER WITH ELECTROMAGNETIC DEVICE FOR QUICK OPENING OF THE MOBILE CONTACT
US4227161A (en) * 1978-10-16 1980-10-07 Westinghouse Electric Corp. Current limiting circuit breaker with pivoting contact arm
US4245203A (en) * 1978-10-16 1981-01-13 Westinghouse Electric Corp. Circuit interrupter with pivoting contact arm having a clinch-type contact
US4255732A (en) * 1978-10-16 1981-03-10 Westinghouse Electric Corp. Current limiting circuit breaker
US4220934A (en) * 1978-10-16 1980-09-02 Westinghouse Electric Corp. Current limiting circuit breaker with integral magnetic drive device housing and contact arm stop
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US4346357A (en) * 1979-12-17 1982-08-24 Gould Inc. Current-limiting circuit breaker adapter
US4516182A (en) * 1981-01-16 1985-05-07 Ga Technologies Inc. Current limiting apparatus
US4409573A (en) * 1981-04-23 1983-10-11 Siemens-Allis, Inc. Electromagnetically actuated anti-rebound latch
FR2511185A1 (en) * 1981-08-07 1983-02-11 Telemecanique Electrique AUTOMATIC DEVICE FOR LIMITING SHORT CIRCUIT CURRENTS
US4458224A (en) * 1982-04-20 1984-07-03 Siemens-Allis, Inc. Current-limiting circuit breaker adapter
US4470027A (en) * 1982-07-16 1984-09-04 Eaton Corporation Molded case circuit breaker with improved high fault current interruption capability
US4527027A (en) * 1982-07-16 1985-07-02 Eaton Corporation Molded case circuit breaker with improved high fault current interruption capability
FR2531565B1 (en) * 1982-08-06 1985-11-15 Telemecanique Electrique MODULAR CURRENT LIMITING DEVICES
US4620171A (en) * 1984-01-09 1986-10-28 Westinghouse Electric Corp. Molded case circuit breaker with resettable combined undervoltage and manual trip mechanism
US4630019A (en) * 1984-09-28 1986-12-16 Westinghouse Electric Corp. Molded case circuit breaker with calibration adjusting means for a bimetal
US4630017A (en) * 1984-10-01 1986-12-16 Siemens Energy & Automation, Inc. Magnetic structure for calibrating a circuit breaker
US4680564A (en) * 1984-10-01 1987-07-14 Siemens-Allis, Inc. Multi-pole molded case circuit breaker with a common contact operating crossbar member
US4612430A (en) * 1984-12-21 1986-09-16 Square D Company Anti-rebound latch
JPH0658785B2 (en) * 1985-06-12 1994-08-03 株式会社東芝 Circuit breaker
US4827231A (en) * 1988-01-28 1989-05-02 Westinghouse Electric Corp. Molded case circuit breaker with viewing window and sliding barrier
JPH01265423A (en) * 1988-04-18 1989-10-23 Fuji Electric Co Ltd Circuit breaker
DE59008339D1 (en) * 1989-07-26 1995-03-09 Siemens Ag Electromechanical quick switch.
EP0410257A1 (en) * 1989-07-26 1991-01-30 Siemens Aktiengesellschaft Electromechanical high speed switch
KR930010967B1 (en) * 1989-09-18 1993-11-18 미쯔비시 덴끼 가부시기가이샤 Current limiting circuit breaker
US4951015A (en) * 1989-10-05 1990-08-21 Westinghouse Electric Corp. Circuit breaker with moving magnetic core for low current magnetic trip
JP2894052B2 (en) * 1990-12-11 1999-05-24 株式会社日立製作所 Circuit breaker
US5394126A (en) * 1994-04-18 1995-02-28 Eaton Corporatiion Circuit breaker with improved magnetic trip assembly
US5428329A (en) * 1994-05-24 1995-06-27 Eaton Corporation Springclip means for a latchable operating mechanism on a circuit breaker
US5471184A (en) * 1994-07-13 1995-11-28 Eaton Corporation Circuit breaker
US5861596A (en) * 1997-04-01 1999-01-19 Eaton Corporation Dual baffle apparatus for electrical switching device
US5874873A (en) * 1997-08-22 1999-02-23 Eaton Corporation Electric control apparatus
US5973280A (en) * 1998-03-23 1999-10-26 Eaton Corporation Circuit breaker with an anti-lift pivot handle
US6034586A (en) * 1998-10-21 2000-03-07 Airpax Corporation, Llc Parallel contact circuit breaker
DE19952179A1 (en) * 1999-10-29 2001-05-03 Moeller Gmbh Electrical protection switching device
DE10013314C2 (en) * 2000-03-17 2002-01-17 Siemens Ag Electromagnetic switching device, especially a contactor
WO2002035571A1 (en) * 2000-10-24 2002-05-02 Siemens Energy & Automation, Inc. Auxiliary contact molded case circuit breaker
US6831536B1 (en) 2003-08-29 2004-12-14 Eaton Corporation Circuit breaker slot motor having a stepped out portion
US6970059B2 (en) * 2003-12-11 2005-11-29 Eaton Corporation Slot motor including legs engaging openings of circuit breaker housing and electrical switching apparatus employing the same
US7348514B2 (en) * 2006-04-12 2008-03-25 Eaton Corporation Slot motor and circuit breaker including the same
EP2251887B1 (en) * 2009-05-15 2016-03-16 Abb Ag Electromagnetic trip device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114878953A (en) * 2022-07-07 2022-08-09 国网辽宁省电力有限公司 Relay protection outlet matrix tester
CN114878953B (en) * 2022-07-07 2022-09-23 国网辽宁省电力有限公司 Relay protection outlet matrix tester

Also Published As

Publication number Publication date
AU6253873A (en) 1975-05-15
US3815059A (en) 1974-06-04
JPS49119762U (en) 1974-10-14
AR201297A1 (en) 1975-02-28
DE2360439B2 (en) 1978-07-06
PH11797A (en) 1978-07-05
DE2360439A1 (en) 1974-06-06
IT1002055B (en) 1976-05-20
ES420998A1 (en) 1976-04-01
BE808016A (en) 1974-05-29
CH583968A5 (en) 1977-01-14
BR7309229D0 (en) 1974-08-29
FR2209203A1 (en) 1974-06-28
JPS5345256Y2 (en) 1978-10-30
FR2209203B1 (en) 1980-05-23
CA985722A (en) 1976-03-16
ZA738632B (en) 1974-09-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19931202