EP0938121A3 - Automatic circuit breaker particularly low voltage protective circuitbreaker - Google Patents

Automatic circuit breaker particularly low voltage protective circuitbreaker Download PDF

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Publication number
EP0938121A3
EP0938121A3 EP98124674A EP98124674A EP0938121A3 EP 0938121 A3 EP0938121 A3 EP 0938121A3 EP 98124674 A EP98124674 A EP 98124674A EP 98124674 A EP98124674 A EP 98124674A EP 0938121 A3 EP0938121 A3 EP 0938121A3
Authority
EP
European Patent Office
Prior art keywords
die
arc
der
circuit breaker
contact
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Withdrawn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
EP98124674A
Other languages
German (de)
French (fr)
Other versions
EP0938121A2 (en
Inventor
Hans Dipl.-Ing Kurzinski
Günter Dipl.-Ing. Vovdran
Bernd Dipl.-Ing. Kiesslich
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.)
Esg Elektroschaltgerate Gorlitz GmbH
Original Assignee
Esg Elektroschaltgerate Gorlitz 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 Esg Elektroschaltgerate Gorlitz GmbH filed Critical Esg Elektroschaltgerate Gorlitz GmbH
Publication of EP0938121A2 publication Critical patent/EP0938121A2/en
Publication of EP0938121A3 publication Critical patent/EP0938121A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • 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
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/345—Mounting of arc chutes

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Die Erfindung bezieht sich auf einen Selbstschalter, insbesondere Niederspannungs-Schutzschalter, mit einem Isolierstoffgehäuse, einem Schaltschloß, U-förmigen Anschlußschienen mit feststehenden Kontakten, denen in einer Schalttraverse gelagerte bewegliche Kontaktbrücken gegenüberstehen und mit diesen in Berührung gebracht und gelöst werden können und Lichtbogenführungs- und Löschbleche aufweisenden Lichtbogenlöschkammern für jeden Schaltpol. Er ist gekennzeichnet durch die Kombination folgender Merkmale:

  • a) die Schalttraverse (3) für die Kontaktbrücken (4) besteht aus einem Duroplast-Werkstoff;
  • b) die Einschaltgeschwindigkeit der Kontakte (4, 5) zueinander beträgt unabhängig von der Betätigungsweise größer/gleich 3 m/s;
  • c) der Kontakthub ist größer/gleich 8 mm und überstreicht mindestens die Höhe der Löschkammereinsätze (11);
  • d) die Schaltergrundplatte (12) ist aus einem Thermoplastwerkstoff federelastisch ausgebildet und preßt die ebenfalls federnden Löschkammereinsätze (11) unter Federspannung mit ihren Lichtbogenleitblechen (10) gegen die starren Fortsätze (9) der festen Kontaktträger (7);
  • e) im Bereich des vorgesehenen Lichtbogenaustritts aus den Lichtbogenkammern ist die Wandung mit labyrinthartig gestalteten Auslaßschlitzen (14) für das Lichtbogenplasma versehen.
    • Figure 00000001
    The invention relates to a circuit breaker, in particular low-voltage circuit breaker, with an insulating housing, a switch lock, U-shaped connecting rails with fixed contacts, which face movable contact bridges mounted in a switching crossbar and can be brought into contact with and released from them, and arc guiding and Arc quenching chambers with quenching plates for each switching pole. It is characterized by the combination of the following features:
  • a) the switching crossmember (3) for the contact bridges (4) consists of a thermoset material;
  • b) the switch-on speed of the contacts (4, 5) relative to one another is greater than or equal to 3 m / s;
  • c) the contact stroke is greater than / equal to 8 mm and covers at least the height of the arcing chamber inserts (11);
  • d) the switch base plate (12) is made of a thermoplastic material and resiliently presses the likewise resilient quenching chamber inserts (11) under spring tension with their arc guide plates (10) against the rigid extensions (9) of the fixed contact carriers (7);
  • e) in the area of the intended arc exit from the arc chambers, the wall is provided with labyrinth-like outlet slots (14) for the arc plasma.
    • Figure 00000001
    EP98124674A 1998-02-19 1998-12-24 Automatic circuit breaker particularly low voltage protective circuitbreaker Withdrawn EP0938121A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE1998106944 DE19806944C1 (en) 1998-02-19 1998-02-19 LV protection switch
    DE19806944 1998-02-19

    Publications (2)

    Publication Number Publication Date
    EP0938121A2 EP0938121A2 (en) 1999-08-25
    EP0938121A3 true EP0938121A3 (en) 2000-06-07

    Family

    ID=7858284

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98124674A Withdrawn EP0938121A3 (en) 1998-02-19 1998-12-24 Automatic circuit breaker particularly low voltage protective circuitbreaker

    Country Status (2)

    Country Link
    EP (1) EP0938121A3 (en)
    DE (1) DE19806944C1 (en)

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19943965A1 (en) * 1999-09-14 2001-03-15 Moeller Gmbh Low voltage switchgear
    ITTO20020438A1 (en) * 2002-05-23 2003-11-24 Bitron Spa LOAD CONNECTION CONTROL DEVICE TO A VOLTAGE SOURCE, IN PARTICULAR TO THE BATTERY OF A VEHICLE.
    DE10254259A1 (en) * 2002-11-21 2004-06-03 Abb Patent Gmbh Method for producing a housing for an electrical switching device
    DE102007054426B4 (en) * 2006-11-24 2010-08-05 Abb Ag Switching chamber assembly and switching device

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4631507A (en) * 1984-09-27 1986-12-23 La Telemecanique Electrique Variable composition switching device
    EP0351724A2 (en) * 1988-07-20 1990-01-24 Asea Brown Boveri Aktiengesellschaft Electric power circuit breaker
    WO1994011894A1 (en) * 1992-11-13 1994-05-26 Square D Company An improved arc extinguishing device and method of assembling same
    EP0727805A2 (en) * 1995-02-16 1996-08-21 Siemens Aktiengesellschaft Contact lever unit for low voltage circuit breaker

    Family Cites Families (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE6930259U (en) * 1969-07-25 1969-11-13 Siemens Ag PELTIER COOLING BLOCK

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4631507A (en) * 1984-09-27 1986-12-23 La Telemecanique Electrique Variable composition switching device
    EP0351724A2 (en) * 1988-07-20 1990-01-24 Asea Brown Boveri Aktiengesellschaft Electric power circuit breaker
    WO1994011894A1 (en) * 1992-11-13 1994-05-26 Square D Company An improved arc extinguishing device and method of assembling same
    EP0727805A2 (en) * 1995-02-16 1996-08-21 Siemens Aktiengesellschaft Contact lever unit for low voltage circuit breaker

    Also Published As

    Publication number Publication date
    DE19806944C1 (en) 1999-06-24
    EP0938121A2 (en) 1999-08-25

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