EP0130560A3 - Current limiting switch - Google Patents

Current limiting switch Download PDF

Info

Publication number
EP0130560A3
EP0130560A3 EP84107450A EP84107450A EP0130560A3 EP 0130560 A3 EP0130560 A3 EP 0130560A3 EP 84107450 A EP84107450 A EP 84107450A EP 84107450 A EP84107450 A EP 84107450A EP 0130560 A3 EP0130560 A3 EP 0130560A3
Authority
EP
European Patent Office
Prior art keywords
contact
rotatable
current limiting
limiting switch
movable 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Withdrawn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
EP84107450A
Other languages
German (de)
French (fr)
Other versions
EP0130560A2 (en
Inventor
Sven Dipl.-Ing. Bachler
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 Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Publication of EP0130560A2 publication Critical patent/EP0130560A2/en
Publication of EP0130560A3 publication Critical patent/EP0130560A3/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Withdrawn legal-status Critical Current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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H2001/2091—Bridging contacts having two pivotally and electrically connected halve bridges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring
    • 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
    • H01H71/2436—Electromagnetic mechanisms with a holding and a releasing magnet, the holding force being limited due to saturation of the holding magnet
    • 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

Abstract

Strombegrenzender Schalter mit mindestens zwei längli­ chen und seitlich neben- bzw. übereinander angeordneten Kontakten (2, 4), von welchen der eine Kontakt (4) drehbar ge­ lagert ist, an seinem einen Ende (dem Kontaktende) eine Schaltstelle mit dem anderen Kontakt bildet und an seinem an­ deren Ende (dem Wurzelende) mit einem flexiblen Stromleiter (7) versehen ist. Gemäß der Erfindung befindet sich die Lager­ stelle (5) des drehbaren Kontaktes (4) zwischen den beiden Enden des Kontaktes an einem beweglichen Arm (6) und ist derart angeordnet, daß der drehbare Kontakt bei einem Kurz­ schlußstrom unter der Wirkung elektrodynamischer Kräfte zu­ nächst in einer ersten Richtung unter Beibehaltung des galva­ nischen Kontaktes an der Schaltstelle (2a, 4a) gedreht wird, wobei eine solche Änderung der Lage des beweglichen Arms (6) verursacht wird, daß der Abstand zwischen der Lagerstelle (5) des Kontaktes (4) und dem Gegenkontakt (2) größer wird. Ferner ist ein erster Anschlag (17) vorhanden, der die Drehbe­ wegung des Kontaktes (4) in der ersten Drehrichtung be­ grenzt und eine Drehbewegung des Kontaktes in der entge­ gengesetzten Drehrichtung auslöst, die eine schlagartige Kon­ taktöffnung zur Folge hat. Current limiting switch with at least two long Chen and arranged side by side or one above the other Contacts (2, 4), of which the one contact (4) rotatable ge is stored, at one end (the contact end) one Switching point forms with the other contact and at his the end (the root end) of a flexible conductor (7) is provided. According to the invention there is the bearing Place (5) of the rotatable contact (4) between the two Ends of contact on a movable arm (6) and is arranged such that the rotatable contact in a short final current under the action of electrodynamic forces next in a first direction while maintaining the galva African contact at the switching point (2a, 4a) is rotated, such a change in the position of the movable arm (6) causes the distance between the bearing (5) of the contact (4) and the counter contact (2) is larger. Furthermore, a first stop (17) is present, which the Drehbe movement of the contact (4) in the first direction of rotation borders and a rotary movement of the contact in the opposite the opposite direction of rotation triggers a sudden con clock opening has the consequence.

EP84107450A 1983-07-04 1984-06-27 Current limiting switch Withdrawn EP0130560A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8303808A SE448794B (en) 1983-07-04 1983-07-04 Current limiting switches
SE8303808 1983-07-04

Publications (2)

Publication Number Publication Date
EP0130560A2 EP0130560A2 (en) 1985-01-09
EP0130560A3 true EP0130560A3 (en) 1987-05-27

Family

ID=20351876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107450A Withdrawn EP0130560A3 (en) 1983-07-04 1984-06-27 Current limiting switch

Country Status (4)

Country Link
US (1) US4550299A (en)
EP (1) EP0130560A3 (en)
JP (1) JPS6068526A (en)
SE (1) SE448794B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727750B2 (en) * 1984-12-26 1995-03-29 株式会社日立製作所 Circuit breaker
US4633207A (en) * 1985-04-01 1986-12-30 Siemens Energy & Automation, Inc. Cam following bridge contact carrier for a current limiting circuit breaker
US4835501A (en) * 1987-09-11 1989-05-30 Cooper Industries, Inc. Current limiting assembly for circuit breakers
US5184099A (en) * 1991-06-13 1993-02-02 Siemens Energy & Automation, Inc. Circuit breaker with dual movable contacts
US5268661A (en) * 1992-09-18 1993-12-07 Westinghouse Electric Corp. Current throttle technique
ATE250289T1 (en) * 1994-10-07 2003-10-15 Phoenix Contact Gmbh & Co SURGE PROTECTION ELEMENT
FR2829869B1 (en) * 2001-09-20 2003-10-31 Schneider Electric Ind Sa ELECTRICAL SWITCHING APPARATUS PROVIDED WITH A CONTACT SWITCHING DEVICE
DE102008040813A1 (en) 2008-07-29 2010-02-04 Robert Bosch Gmbh Method for non-destructive testing of plastic welding seam, involves detecting reflected or led-through test radiation by detector, and utilizing terahertz radiation of specific wavelength range as test radiation
JP5585550B2 (en) * 2011-07-18 2014-09-10 アンデン株式会社 relay
FR3003392B1 (en) * 2013-03-15 2016-07-22 Schneider Electric Ind Sas UNIT SWITCHING BLOCK AND SWITCHING DEVICE COMPRISING AT LEAST ONE BLOCK
US9412549B2 (en) 2014-02-18 2016-08-09 General Electric Company Electromagnetically enhanced contact separation in a circuit breaker

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944129A (en) * 1957-11-12 1960-07-05 Fed Pacific Electric Co Circuit breakers
FR1275255A (en) * 1959-12-07 1961-11-03 Licentia Gmbh Current switch
DE1933576A1 (en) * 1968-07-05 1970-03-05 Merlin Gerin Current limit switch with electrodynamic compensation
FR2039881A5 (en) * 1969-03-25 1971-01-15 Hazemeijer Co
FR2144668A1 (en) * 1971-07-07 1973-02-16 Berlin Treptow K
DE2443771A1 (en) * 1974-04-12 1975-10-16 Sace Spa Bounce-proof limit switch
DE2928824A1 (en) * 1978-08-10 1980-02-21 Fuji Electric Co Ltd Protective switch with automatic tripping - has two parallel contact arms with one arm pushed away by electrodynamic repulsive forces before switch is tripped to open

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL241741A (en) * 1958-07-30
US3345485A (en) * 1964-12-30 1967-10-03 Fed Pacific Electric Co Circuit breaker having improved arcing contact structure
NL6801378A (en) * 1967-01-30 1968-07-31

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944129A (en) * 1957-11-12 1960-07-05 Fed Pacific Electric Co Circuit breakers
FR1275255A (en) * 1959-12-07 1961-11-03 Licentia Gmbh Current switch
DE1933576A1 (en) * 1968-07-05 1970-03-05 Merlin Gerin Current limit switch with electrodynamic compensation
FR2039881A5 (en) * 1969-03-25 1971-01-15 Hazemeijer Co
FR2144668A1 (en) * 1971-07-07 1973-02-16 Berlin Treptow K
DE2443771A1 (en) * 1974-04-12 1975-10-16 Sace Spa Bounce-proof limit switch
DE2928824A1 (en) * 1978-08-10 1980-02-21 Fuji Electric Co Ltd Protective switch with automatic tripping - has two parallel contact arms with one arm pushed away by electrodynamic repulsive forces before switch is tripped to open

Also Published As

Publication number Publication date
US4550299A (en) 1985-10-29
JPS6068526A (en) 1985-04-19
SE448794B (en) 1987-03-16
EP0130560A2 (en) 1985-01-09
SE8303808D0 (en) 1983-07-04
SE8303808L (en) 1985-01-05

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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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PUAL Search report despatched

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Effective date: 19880127

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BACHLER, SVEN, DIPL.-ING.