EP0243980A3 - Contact arrangement for current limiting low-tension power circuit breakers - Google Patents

Contact arrangement for current limiting low-tension power circuit breakers Download PDF

Info

Publication number
EP0243980A3
EP0243980A3 EP87106355A EP87106355A EP0243980A3 EP 0243980 A3 EP0243980 A3 EP 0243980A3 EP 87106355 A EP87106355 A EP 87106355A EP 87106355 A EP87106355 A EP 87106355A EP 0243980 A3 EP0243980 A3 EP 0243980A3
Authority
EP
European Patent Office
Prior art keywords
contact
power circuit
current limiting
circuit breakers
tension power
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.)
Granted
Application number
EP87106355A
Other languages
German (de)
Other versions
EP0243980B1 (en
EP0243980A2 (en
Inventor
Josef Dipl.-Ing. Spindler
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT87106355T priority Critical patent/ATE78953T1/en
Publication of EP0243980A2 publication Critical patent/EP0243980A2/en
Publication of EP0243980A3 publication Critical patent/EP0243980A3/en
Application granted granted Critical
Publication of EP0243980B1 publication Critical patent/EP0243980B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Abstract

The contact arrangement for current limiting low-tension power circuit breakers has a moving contact piece which interacts with a fixed contact piece, in which arrangement a large acceleration of the contact pieces at the start of contact opening causes a rapid increase of the arc voltage. In this way, contact opening is accelerated at the start of the contact movement and the angle between the two contact surfaces is in this way rapidly increased, in that the end sections of the contact arms carrying the contact pieces are supported on the contact arms such that they can pivot and are spring-loaded. <IMAGE>
EP87106355A 1986-05-02 1987-04-30 Contact arrangement for current limiting low-tension power circuit breakers Expired - Lifetime EP0243980B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106355T ATE78953T1 (en) 1986-05-02 1987-04-30 CONTACT ARRANGEMENT FOR CURRENT-LIMITING LOW-VOLTAGE CIRCUIT BREAKER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863614866 DE3614866A1 (en) 1986-05-02 1986-05-02 CONTACT FOR LOW CURRENT CIRCUIT BREAKERS
DE3614866 1986-05-02

Publications (3)

Publication Number Publication Date
EP0243980A2 EP0243980A2 (en) 1987-11-04
EP0243980A3 true EP0243980A3 (en) 1989-02-15
EP0243980B1 EP0243980B1 (en) 1992-07-29

Family

ID=6300010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106355A Expired - Lifetime EP0243980B1 (en) 1986-05-02 1987-04-30 Contact arrangement for current limiting low-tension power circuit breakers

Country Status (3)

Country Link
EP (1) EP0243980B1 (en)
AT (1) ATE78953T1 (en)
DE (2) DE3614866A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1638154B2 (en) * 1967-01-27 1972-09-07 Terasaki Denki Sangyo K.K., Osaka (Japan) SELF SWITCH
DD154561A1 (en) * 1980-11-17 1982-03-31 Wolfgang Pump CONTACT DEVICE FOR ELECTRICITY-LIMITING CIRCUIT PROTECTION SWITCHES
EP0145990A2 (en) * 1983-12-19 1985-06-26 Westinghouse Electric Corporation Circuit breaker with improved cross-bar and contact assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3534305A (en) * 1968-11-21 1970-10-13 Ite Imperial Corp Current limiting circuit breaker
GB1432794A (en) * 1973-05-30 1976-04-22 Guschin V Y Electric circuit breakers
DE2511948C3 (en) * 1975-03-19 1978-05-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Current limiting circuit breaker
DD225237A1 (en) * 1984-07-02 1985-07-24 Zeiss Jena Veb Carl DEVICE FOR COMPARING THE DEGREE OF ESTIMATION

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1638154B2 (en) * 1967-01-27 1972-09-07 Terasaki Denki Sangyo K.K., Osaka (Japan) SELF SWITCH
DD154561A1 (en) * 1980-11-17 1982-03-31 Wolfgang Pump CONTACT DEVICE FOR ELECTRICITY-LIMITING CIRCUIT PROTECTION SWITCHES
EP0145990A2 (en) * 1983-12-19 1985-06-26 Westinghouse Electric Corporation Circuit breaker with improved cross-bar and contact assembly

Also Published As

Publication number Publication date
DE3780690D1 (en) 1992-09-03
EP0243980B1 (en) 1992-07-29
DE3614866A1 (en) 1987-11-05
EP0243980A2 (en) 1987-11-04
ATE78953T1 (en) 1992-08-15
DE3614866C2 (en) 1989-04-06

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