ES368585A1 - Current limiting circuit breaker with electrodynamic compensation - Google Patents

Current limiting circuit breaker with electrodynamic compensation

Info

Publication number
ES368585A1
ES368585A1 ES368585A ES368585A ES368585A1 ES 368585 A1 ES368585 A1 ES 368585A1 ES 368585 A ES368585 A ES 368585A ES 368585 A ES368585 A ES 368585A ES 368585 A1 ES368585 A1 ES 368585A1
Authority
ES
Spain
Prior art keywords
loop
roller
release
latch
electrodynamic
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
ES368585A
Other languages
Spanish (es)
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of ES368585A1 publication Critical patent/ES368585A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • 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

Landscapes

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

Abstract

A circuit breaker comprises a movable contact arm 10, Fig. 4, connected by a current loop 16 and pivoted at 28 to a fixed support 30, 46 held by a pivoted actuator 34, 36 or latch 48, 50 whereby the electrodynamic forces in the loop 16 at first assist spring 33, and increase the pressure at contacts 18, 22 until the arcing contacts 20, 24 engage. After release of the latch 48, 50 due to electrodynamic forces in loop 16, support 30, 46 pivots freely at 32 whereby the electrodynamic forces in loop 16 assist spring 33 to force the contacts 18, 22 open. Electrodynamic release is obtained as a result of forces in the loop 16 which at first urges the latch rollers 48, 50 downwards against the action of a compression spring 64 tending to urge pivot 39 of arm 54 upwards by urging an elongation of linkage 60, 62. After limited movement, stop 70 of arm 54 positively engages extension 66 of link 62 whereby roller 50 is released from roller 48. This arrangement provides for a limited rise in current through loop 62 whereby roller 50 begins to move but can be returned to its initial locked position by the spring 64 if the current falls. A number of similar circuit-breakers may be linked through shaft 34 for simultaneous manual or an unspecified tripping operator or electrodynamic release. Manual or latch release of shaft 34 rotates the circuit breakers to the open position (Fig. 8, not shown) by lowering pivot 39 and roller 50 to release the support 30, 46 without release of the associated latch roller 50 from roller 48. In a modification the latch system comprises a spring-pressed plunger 92, Fig. 16, in a recessed housing 78. Electrodynamic forces in loop 16 or movement of actuator 34 causes plunger 92 to tilt out of recess 78 into recess 80 whereby pivot 28 and support 30 are released to move clockwise about pivot 32 and allow the contacts 18-24 to open under action of the spring 33 assisted by the electrodynamic forces in loop 16.
ES368585A 1968-07-05 1969-06-20 Current limiting circuit breaker with electrodynamic compensation Expired ES368585A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR158223 1968-07-05

Publications (1)

Publication Number Publication Date
ES368585A1 true ES368585A1 (en) 1971-05-01

Family

ID=8652193

Family Applications (1)

Application Number Title Priority Date Filing Date
ES368585A Expired ES368585A1 (en) 1968-07-05 1969-06-20 Current limiting circuit breaker with electrodynamic compensation

Country Status (9)

Country Link
US (1) US3550049A (en)
BE (1) BE734825A (en)
CH (1) CH493929A (en)
DE (1) DE1933576C2 (en)
ES (1) ES368585A1 (en)
FR (1) FR1580422A (en)
GB (1) GB1222456A (en)
NL (1) NL163049C (en)
SE (1) SE358506B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1366889A (en) * 1970-09-25 1974-09-18 Cableform Ltd Electrical contactors
US3921109A (en) * 1974-06-20 1975-11-18 Westinghouse Electric Corp Circuit-interrupter
NL173577C (en) * 1979-05-21 1984-02-01 Hazemeijer Bv CURRENT LIMITING FAST-ACTING SWITCH.
SE448794B (en) * 1983-07-04 1987-03-16 Asea Ab Current limiting switches
DE3432086A1 (en) * 1984-08-28 1986-03-06 Siemens AG, 1000 Berlin und 8000 München CONTACT ARRANGEMENT WITH A CURRENT-DEPENDENT POWER FOR EXTENSING THE CONTACT FORCE
GB8519740D0 (en) * 1985-08-06 1985-09-11 Ashley Accessories Ltd Mains electrical accessories
US4656444A (en) * 1985-08-16 1987-04-07 Westinghouse Electric Corp. Circuit breaker with force generating shunt
DE3604784A1 (en) * 1986-02-13 1987-08-20 Siemens Ag Method and device for producing sections of a metal foil
DE3604782A1 (en) * 1986-02-13 1987-08-20 Siemens Ag DEVICE FOR PRESS WELDING PACKED METAL FILMS
US4827233A (en) * 1987-04-02 1989-05-02 Texas Instruments Incorporated Miniature circuit breaker with improved longivity
US5189384A (en) * 1991-11-06 1993-02-23 Westinghouse Electric Corp. Circuit breaker having improved contact structure
GB9614169D0 (en) * 1996-07-05 1996-09-04 Whipp & Bourne Ltd Electrical circuit breakers
DE19740422B4 (en) * 1997-09-10 2005-10-06 Siemens Ag Current-limiting low-voltage circuit breaker
CN101533744B (en) * 2008-09-26 2011-02-02 厦门宏美电子有限公司 Falling-preventing structure after moving contact of current-limiting circuit breaker with a plastic shell is opened

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE262424C (en) *
US2839632A (en) * 1954-11-18 1958-06-17 Comp Generale Electricite Circuit breaker
DE1107330B (en) * 1958-08-13 1961-05-25 Calor Emag Elektrizitaets Ag Electrical switch for the automatic interruption of overcurrent and short-circuit currents
AT232575B (en) * 1959-12-07 1964-03-25 Licentia Gmbh Circuit breaker
DE1127453B (en) * 1960-03-24 1962-04-12 Elektro App Werke J W Stalin V Electrodynamic system for actuating the switching contacts of an electrical switch, in particular a circuit breaker
NL259252A (en) * 1960-12-21
FR1316904A (en) * 1961-03-13 1963-02-01 Licentia Gmbh Contact system for electrical power switches
DE1161350B (en) * 1961-03-13 1964-01-16 Licentia Gmbh Contact arrangement for electrical circuit breakers with current-limiting switch-off characteristics
NL280917A (en) * 1961-07-13

Also Published As

Publication number Publication date
BE734825A (en) 1969-12-01
NL163049B (en) 1980-02-15
DE1933576C2 (en) 1982-01-14
GB1222456A (en) 1971-02-17
NL6909171A (en) 1970-01-07
DE1933576A1 (en) 1970-03-05
NL163049C (en) 1980-07-15
FR1580422A (en) 1969-09-05
US3550049A (en) 1970-12-22
CH493929A (en) 1970-07-15
SE358506B (en) 1973-07-30

Similar Documents

Publication Publication Date Title
US3569652A (en) Cam operated circuit breaker with single stroke manual spring charging means
ES368585A1 (en) Current limiting circuit breaker with electrodynamic compensation
MY125589A (en) Switch mechanism
GB1496570A (en) Automatic circuit breaker
GB1461217A (en) Circuit breaker
GB1196797A (en) Improvements in Current-Limiting Electric Circuit Breakers.
US3239621A (en) Snap action switch
GB980010A (en) Improvements in electric circuit breakers
GB719409A (en) Automatic electrical circuit-breakers
GB745744A (en) Improvements in and connected with electric switches or circuit breakers
GB1000486A (en) Automatic circuit breakers
GB1002965A (en) Improvements in electric circuit breakers
US3940723A (en) Instantaneously tripping device for circuit interrupter
GB819697A (en) Improvements in operating mechanism for an electric circuit breaker
GB1405914A (en) Electrical circuit breaker
GB854484A (en) Improvements in electric circuit-breakers
US2160236A (en) Circuit breaker
US3505622A (en) Current limiting circuit breaker with collapsible cradle structure
US3384846A (en) Current limiting circuit breaker mechanism
GB1095192A (en) Circuit interrupter
GB1515749A (en) Manually operable circuit interrupter with automatic current overload protection
GB1227285A (en)
US2760028A (en) Circuit breakers
GB784866A (en) Improvements in and relating to electric circuit breakers
GB1040143A (en) Improvements in electric circuit breakers