EP0168888A3 - Ultrarapid-release current-limiter electrical switch - Google Patents

Ultrarapid-release current-limiter electrical switch Download PDF

Info

Publication number
EP0168888A3
EP0168888A3 EP85201125A EP85201125A EP0168888A3 EP 0168888 A3 EP0168888 A3 EP 0168888A3 EP 85201125 A EP85201125 A EP 85201125A EP 85201125 A EP85201125 A EP 85201125A EP 0168888 A3 EP0168888 A3 EP 0168888A3
Authority
EP
European Patent Office
Prior art keywords
lever
release
movable
oscillatable
arm
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.)
Withdrawn
Application number
EP85201125A
Other languages
German (de)
French (fr)
Other versions
EP0168888A2 (en
Inventor
Angelo Mostosi
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.)
ABB SACE SpA
Original Assignee
SACE SpA
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 SACE SpA filed Critical SACE SpA
Publication of EP0168888A2 publication Critical patent/EP0168888A2/en
Publication of EP0168888A3 publication Critical patent/EP0168888A3/en
Withdrawn legal-status Critical Current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
    • H01H77/102—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 special mounting of contact arm, allowing blow-off movement
    • H01H77/104—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 special mounting of contact arm, allowing blow-off movement with a stable blow-off position
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism
    • H01H2071/2427—Electromagnetic mechanisms combined with an electrodynamic current limiting mechanism with blow-off movement tripping mechanism, e.g. electrodynamic effect on contacts trips the traditional trip device before it can unlatch the spring mechanism by itself
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2418—Electromagnetic mechanisms combined with an electrodynamic current limiting 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/522—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism
    • H01H71/525—Manual reset mechanisms which may be also used for manual release actuated by lever comprising a cradle-mechanism comprising a toggle between cradle and contact arm and mechanism spring acting between handle and toggle knee

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

In an ultrarapid-release current-limiter electrical switch com­ prising at least a support with a stationary contact, at least a movable contact borne by an arm rotatably mounted in a movable unit and submitted to the action by a spring reacting against the movable unit, and a control mechanism with a control lever, an oscillatable lever kept stopped by a release device, a toggle lever system between said movable unit and said oscillatable lever and an extension spring acting between said control lever and the hinge of said toggle lever system, said support of the stationary contact and said movable contact bearing arm defining, under contact closure conditions, two portions parallel and close to each other in the current path, wherein currents of opposite sign flow, which are suitable to produce, in case of strong current intensities due to short-circuits, repulsive electrodynamic forces; between said movable contact bearing arm and said release device for the oscillatable lever of the control mechanism mechanical means are interposed suitable to cause, on a displacement of said arm by eletrodynamic repulsion, directly the release of said oscillat­ able lever.
EP85201125A 1984-07-18 1985-07-09 Ultrarapid-release current-limiter electrical switch Withdrawn EP0168888A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2261684U 1984-07-18
IT2261684U IT8422616V0 (en) 1984-07-18 1984-07-18 ELECTRIC SWITCH CURRENT LIMITER WITH ULTRA-QUICK RELEASE.

Publications (2)

Publication Number Publication Date
EP0168888A2 EP0168888A2 (en) 1986-01-22
EP0168888A3 true EP0168888A3 (en) 1987-05-20

Family

ID=11198474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201125A Withdrawn EP0168888A3 (en) 1984-07-18 1985-07-09 Ultrarapid-release current-limiter electrical switch

Country Status (2)

Country Link
EP (1) EP0168888A3 (en)
IT (1) IT8422616V0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830017B4 (en) * 1998-06-26 2005-10-27 Siemens Ag Multipole current-limiting circuit breaker
US6069544A (en) * 1998-10-22 2000-05-30 General Electric Company Circuit breaker operating mechanism having a collapsible contact arm linkage assembly
DE10124985B4 (en) * 2001-05-22 2004-02-05 Aeg Niederspannungstechnik Gmbh & Co Kg Tripping device of a circuit breaker and circuit breaker system
EP2824689B1 (en) * 2013-06-13 2016-04-06 ABB Schweiz AG Dynamic actuator and electric installation device with a dynamic trigger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1393064A (en) * 1963-05-16 1965-03-19 Licentia Gmbh Circuit breaker where opening the contact system limits the intensity of the current
DE1238994B (en) * 1963-06-28 1967-04-20 Licentia Gmbh Circuit breaker which opens in a current-limiting manner in the event of an overcurrent under the effect of the current flowing through the contact system
US3505622A (en) * 1968-11-21 1970-04-07 Ite Imperial Corp Current limiting circuit breaker with collapsible cradle structure
FR2305010A1 (en) * 1975-03-19 1976-10-15 Licentia Gmbh CURRENT LIMITER CIRCUIT BREAKER
GB2033159A (en) * 1978-10-16 1980-05-14 Westinghouse Electric Corp Current limiting circuit breaker
US4346358A (en) * 1981-01-16 1982-08-24 General Electric Company Contact pop responsive latch release for circuit breakers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1393064A (en) * 1963-05-16 1965-03-19 Licentia Gmbh Circuit breaker where opening the contact system limits the intensity of the current
DE1238994B (en) * 1963-06-28 1967-04-20 Licentia Gmbh Circuit breaker which opens in a current-limiting manner in the event of an overcurrent under the effect of the current flowing through the contact system
US3505622A (en) * 1968-11-21 1970-04-07 Ite Imperial Corp Current limiting circuit breaker with collapsible cradle structure
FR2305010A1 (en) * 1975-03-19 1976-10-15 Licentia Gmbh CURRENT LIMITER CIRCUIT BREAKER
GB2033159A (en) * 1978-10-16 1980-05-14 Westinghouse Electric Corp Current limiting circuit breaker
US4346358A (en) * 1981-01-16 1982-08-24 General Electric Company Contact pop responsive latch release for circuit breakers

Also Published As

Publication number Publication date
EP0168888A2 (en) 1986-01-22
IT8422616V0 (en) 1984-07-18

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19871028

17Q First examination report despatched

Effective date: 19891215

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19900426

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MOSTOSI, ANGELO