EP0410902A1 - Niederspannungs-Hochstromschalter mit Mehrfachkontakten - Google Patents

Niederspannungs-Hochstromschalter mit Mehrfachkontakten Download PDF

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Publication number
EP0410902A1
EP0410902A1 EP90420333A EP90420333A EP0410902A1 EP 0410902 A1 EP0410902 A1 EP 0410902A1 EP 90420333 A EP90420333 A EP 90420333A EP 90420333 A EP90420333 A EP 90420333A EP 0410902 A1 EP0410902 A1 EP 0410902A1
Authority
EP
European Patent Office
Prior art keywords
contact
fixed
arcing
arc
main
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
EP90420333A
Other languages
English (en)
French (fr)
Other versions
EP0410902B1 (de
Inventor
Robert Morel
Marc Rival
Hubert Garcia
Pierre Miguet
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.)
Schneider Electric Industries SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34750813&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0410902(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0410902A1 publication Critical patent/EP0410902A1/de
Application granted granted Critical
Publication of EP0410902B1 publication Critical patent/EP0410902B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H9/383—Arcing contact pivots relative to the movable contact assembly
    • 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
    • H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
    • 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
    • H01H1/226—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 having a plurality of parallel contact bars
    • 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
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • 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
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to a low-voltage multipole circuit breaker for high intensities, housed in a molded insulating housing, and comprising by pole: a plurality of movable contact fingers of the same lengths extending parallel to each other at a slight distance from each other while being moved together by a mechanism between a closed position and an open position, a fixed main contact cooperating in the closed position with a mobile main contact of each contact finger, - a pair of connection pads in electrical connection with the main fixed contact and the contact fingers, an arc extinguishing chamber having a stack of deionization metal sheets framed by a pair of conductive horns for guiding and migrating the arc, one of the fixed horns being in electrical connection with the fixed main contact, and having an intermediate rim extending over a short distance in the direction of movement of the frontal extensions of the contact fingers to limit the elongation of the arc during the initial separation phase.
  • a known circuit breaker of the kind mentioned is described in documents FR-A 2,583,571 and 2,589,624, which allow the breaking of short-circuit currents of very high intensities.
  • the arc is prevented from returning to the arc formation zone by virtue of the presence of the rim on the fixed arc guide horn.
  • Separable contacts act as both main contacts and arcing contacts. Tests have shown a certain stagnation of the arc causing premature erosion of the contacts depending on the type of fault, especially in the presence of direct currents.
  • the central contact finger carries exclusively the movable arcing contact, and has a length greater than that of the juxtaposed contact fingers supporting the movable main contacts.
  • the arcing contacts are permanently closed in the closed position of the circuit breaker.
  • the arrangement of two types of contact fingers complicates the production of each pole of the circuit breaker.
  • the object of the invention is to improve the electrical endurance of a low voltage circuit breaker with high currents.
  • the circuit breaker according to the invention is characterized in that in the interval between the intermediate rim of the arcing horn and the fixed main contact is disposed a fixed arcing contact intended to cooperate with a movable arcing contact of at least one contact finger, and that the arcing contacts are closed at the start of the opening stroke of the contact fingers before the main contacts are separated, the positioning of the fixed arcing contact being closer to the edge of the fixed main contact.
  • the fixed arcing contact is arranged to center the arc relative to the center plane of the pole.
  • the fixed main contact and the fixed arcing contact consist of two parallel plates extending transversely with respect to the contact fingers, the plate of the fixed contact being shorter than that of the fixed main contact.
  • the contact fingers are pivotally mounted on a first transverse axis inside a support cage, and the cage of insulating material can switch between the open and closed positions around a second articulation axis. by the action of the mechanism, the assembly being arranged to cause reverse rotational movements of the cage and the contact fingers when the arcing contacts are closed.
  • a pole 10 of a low-voltage, high-intensity non-limiting circuit breaker in particular greater than 1000 A, is housed in a compartment 12 of a molded insulating case 14, containing a separable contact device 16 , and an arc extinguishing chamber 18.
  • the structure of such a pole is described in detail in French Patent No. 2,589,624 mentioned above.
  • the arc extinguishing chamber 18 is equipped with a stack of metal sheets, surrounded by a pair of lower 20 and upper 22 arc conductive horns.
  • the fixed arc horn 20 is made of steel and extends between a conductive part 23 attached to the pad 26 and the chamber 18 of which it constitutes one of the end sheets.
  • the separable contact device 16 comprises a fixed main contact 24 carried directly by a first connection pad 26 passing through the base of the insulating housing 14.
  • the lower arc horn 20 is fixed to the part 23 of the track 26 and to the base of the housing 14 by fixing means 28, 30.
  • the movable contact assembly 32 is provided with a plurality of contact fingers 34 in parallel pivotally mounted on a first transverse axis 36 inside a support cage 38 of insulating material. All the contact fingers 34 have an identical length.
  • the fixed main contact 24 extends transversely to all of the contact fingers 34 in a direction parallel to the first axis 36.
  • each contact finger 34 is connected by a flexible conductor, in particular a braid 40 to a second connection pad 42 which passes through the base of the housing 14, extending parallel to the first pad 26.
  • the cage 38 is coupled to the switching bar of the mechanism (not shown) by a transmission link 44.
  • the internal portion of the second area 42 is surrounded by a current sensor 46 electrically connected to the trigger of the mechanism.
  • the end of the cage 38 located above the second track 42 is equipped with a second axis 48 housed in a fixed bearing 50, to allow the pivoting of the cage 38 following the rotation of the bar between the positions of opening and closing of the pole 10.
  • a spring device 52 for contact pressure is positioned in a notch 54 of the cage 38, and biases the contact fingers 34 in pivoting around the first axis 36 anticlockwise.
  • Each contact finger 34 is provided with a contact piece, hereinafter called mobile main contact 56 cooperating in the closed position with the fixed main contact 24.
  • the first transverse pin 36 is located between the mobile main contacts 56 and the braids 40.
  • each contact finger 34 has a front extension 58 projecting from the cage 38, and capable of moving along a rim 60 or boss of the lower bow horn. 20.
  • each contact finger 34 is shaped as an arc horn having a movable arcing contact 62 intended to cooperate with a fixed arcing contact 64 located near the rim 60 of the arcing horn 20.
  • the fixed arcing contact 64 is fixed on the intermediate piece 23, and is in electrical connection with the horn 20, and the track 26, being arranged between the rim 60 and the fixed main contact 24 .
  • the width of the fixed arcing contact 64 is less than that of the plate of the fixed main contact 24. This results in an absence of contact of the movable arcing contacts 62 of the fingers 34 of the ends with the fixed arcing contact 64 (see fig. 4) when opening the pole.
  • pole 10 The operation of pole 10 is as follows:
  • the link 44 acts on the cage 38 in the direction of the arrow F, (fig.3), simultaneously causing the cage 38 to tilt clockwise around the second axis 48, and the reverse pivoting of the contact fingers 34 around the first axis 36.
  • the fugitive closure of the arcing contacts 62, 64 takes place prior to the separation of the main contacts 24, 56, which takes place without an arc. In this intermediate position, all the current then passes through the arcing contacts 62, 64 thanks to this temporary contact zone located very close to the rim 60 of the horn 20.
  • the presence of the arcing contacts 62, 64 prevents the erosion of the main contacts 24, 56.
  • the bringing together of the arcing at the rim 60 accelerates the migration of the arcing along the guide horn 20, and improves then the development of the arc towards the chamber 18 for rapid extinction.
  • the arrangement of the flange 60 in the vicinity of the arcing zone and along the direction of movement of the contact fingers 34 reduces the erosion of the arcing contacts 62, 64, and contributes to reducing the travel time. from the arch to chamber 18.
  • the dimensionally narrowed length of the conductive plate constituting the common fixed arcing contact 64 makes it possible to obtain a centering of the arc relative to the median plane of the chamber 18, in order to save wear on the side walls of the housing 14 insulator due to the thermal action of the arc. This results in a significant improvement in the electrical endurance of the non-limiting circuit breaker, which is capable of interrupting any type of current, in particular alternating short-circuit currents, or direct currents of low intensity.
  • the fixed arcing contact 64 could be fixed directly on the arcing horn 10.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
EP90420333A 1989-07-26 1990-07-12 Niederspannungs-Hochstromschalter mit Mehrfachkontakten Expired - Lifetime EP0410902B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8910175A FR2650434B1 (fr) 1989-07-26 1989-07-26 Disjoncteur basse tension a contacts multiples et a fortes intensites
FR8910175 1989-07-26
CA002053516A CA2053516C (en) 1989-07-26 1991-10-16 Low voltage circuit breaker with multiple contacts for high currents

Publications (2)

Publication Number Publication Date
EP0410902A1 true EP0410902A1 (de) 1991-01-30
EP0410902B1 EP0410902B1 (de) 1995-02-15

Family

ID=34750813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420333A Expired - Lifetime EP0410902B1 (de) 1989-07-26 1990-07-12 Niederspannungs-Hochstromschalter mit Mehrfachkontakten

Country Status (7)

Country Link
US (1) US5210385A (de)
EP (1) EP0410902B1 (de)
CA (1) CA2053516C (de)
DE (1) DE69016869T2 (de)
ES (1) ES2071066T3 (de)
FR (1) FR2650434B1 (de)
HK (1) HK1006892A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260027A (en) * 1991-09-30 1993-03-31 Long & Crawford Limited Electrical switchgear
EP0555161A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Mehrfach-Kontakt-Unterbrechungsvorrichtung
EP0727805A2 (de) * 1995-02-16 1996-08-21 Siemens Aktiengesellschaft Kontakthebelbaugruppe für einen Niederspannungs-Leistungsschalter
EP0955653A2 (de) * 1998-05-07 1999-11-10 Eaton Corporation Elektrisches Schaltgerät mit Lichtbogenlaufschiene integriert mit festen Lichtbogenkontakt
EP0955658A2 (de) * 1998-05-07 1999-11-10 Eaton Corporation Ellektrischer Schaltgerät mit verbesserten Kontaktarmträgervorrichtung
WO2001003153A1 (de) * 1999-07-02 2001-01-11 Siemens Aktiengesellschaft Schaltkontaktanordnung eines niederspannungs-leistungsschalters mit hauptkontakten, zwischenkontakten und abreisskontakten
EP1244122A1 (de) * 2001-03-20 2002-09-25 Siemens Aktiengesellschaft Kontaktträger für Niederspannungs-Leistungsschalter
WO2002082482A1 (de) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Schaltanordnung für niederspannungs-leistungsschalter
EP2254136A1 (de) 2009-05-18 2010-11-24 Schneider Electric Industries SAS Apparat zur Bestimmung der Integrität von Kontakten, die durch die Variation der Wellendrehung der Pole gedrückt sind und sein Herstellungsverfahren
CN103617931A (zh) * 2013-12-03 2014-03-05 天津市百利电气有限公司 万能式断路器
EP3133626A1 (de) 2015-08-18 2017-02-22 Schneider Electric Industries SAS Elektrischer trennschalter

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EP3772742A1 (de) * 2019-08-05 2021-02-10 ABB S.p.A. Niederspannungsschalterpol
CN114743826A (zh) * 2022-04-01 2022-07-12 江苏大全凯帆开关股份有限公司 一种两极直流负荷开关

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DE540926C (de) * 1932-01-05 Siemens Schuckertwerke Akt Ges Schalter mit Vorstufe
FR1019187A (fr) * 1950-02-10 1953-01-19 Merlin Gerin Perfectionnements apportés aux pare-étincelles des disjoncteurs, etc.
US4295022A (en) * 1979-03-15 1981-10-13 Gould Inc. Trifurcated arc runner
EP0206882A1 (de) * 1985-06-12 1986-12-30 Merlin Gerin Niederspannungsschalter mit Unterbrechung
EP0306382A1 (de) * 1987-08-31 1989-03-08 Merlin Gerin Schalteranordnung für elektrische mehrpolige Schutzschalter mit mehreren Kontakten

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US3585329A (en) * 1968-01-24 1971-06-15 Westinghouse Electric Corp Circuit interrupter with improved contact structure and arc-runner
DE3679291D1 (de) * 1985-10-31 1991-06-20 Merlin Gerin Kinematische uebertragungskette zwischen dem steuermechanismus und den polen eines elektrischen lastschalters mit einem gespritzten isoliergehaeuse.
US4737606A (en) * 1986-10-24 1988-04-12 Square D Company Circuit breaker arc stack assembly
US4996507A (en) * 1988-08-01 1991-02-26 Westinghouse Electric Corp. CT quick change assembly and force transmitting spacer
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BE414109A (de) *
DE540926C (de) * 1932-01-05 Siemens Schuckertwerke Akt Ges Schalter mit Vorstufe
FR1019187A (fr) * 1950-02-10 1953-01-19 Merlin Gerin Perfectionnements apportés aux pare-étincelles des disjoncteurs, etc.
US4295022A (en) * 1979-03-15 1981-10-13 Gould Inc. Trifurcated arc runner
EP0206882A1 (de) * 1985-06-12 1986-12-30 Merlin Gerin Niederspannungsschalter mit Unterbrechung
EP0306382A1 (de) * 1987-08-31 1989-03-08 Merlin Gerin Schalteranordnung für elektrische mehrpolige Schutzschalter mit mehreren Kontakten

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260027A (en) * 1991-09-30 1993-03-31 Long & Crawford Limited Electrical switchgear
EP0555161A1 (de) * 1992-02-07 1993-08-11 Schneider Electric Sa Mehrfach-Kontakt-Unterbrechungsvorrichtung
FR2687250A1 (fr) * 1992-02-07 1993-08-13 Merlin Gerin Dispositif de coupure a contacts multiples.
US5296660A (en) * 1992-02-07 1994-03-22 Merlin Gerin Auxiliary shunt multiple contact breaking device
EP0727805A2 (de) * 1995-02-16 1996-08-21 Siemens Aktiengesellschaft Kontakthebelbaugruppe für einen Niederspannungs-Leistungsschalter
EP0727805A3 (de) * 1995-02-16 1999-07-21 Siemens Aktiengesellschaft Kontakthebelbaugruppe für einen Niederspannungs-Leistungsschalter
EP0955653A3 (de) * 1998-05-07 2000-06-28 Eaton Corporation Elektrisches Schaltgerät mit Lichtbogenlaufschiene integriert mit festen Lichtbogenkontakt
EP0955658A2 (de) * 1998-05-07 1999-11-10 Eaton Corporation Ellektrischer Schaltgerät mit verbesserten Kontaktarmträgervorrichtung
EP0955653A2 (de) * 1998-05-07 1999-11-10 Eaton Corporation Elektrisches Schaltgerät mit Lichtbogenlaufschiene integriert mit festen Lichtbogenkontakt
EP0955658A3 (de) * 1998-05-07 2000-08-23 Eaton Corporation Ellektrischer Schaltgerät mit verbesserten Kontaktarmträgervorrichtung
AU742526B2 (en) * 1998-05-07 2002-01-03 Eaton Corporation Electrical switching apparatus having arc runner integral with stationary arcing contact
WO2001003153A1 (de) * 1999-07-02 2001-01-11 Siemens Aktiengesellschaft Schaltkontaktanordnung eines niederspannungs-leistungsschalters mit hauptkontakten, zwischenkontakten und abreisskontakten
US6689979B1 (en) 1999-07-02 2004-02-10 Siemens Aktiengesellschaft Switching contact arrangement of a low voltage circuit breaker with main contacts, intermediate contact and arcing contacts
EP1244122A1 (de) * 2001-03-20 2002-09-25 Siemens Aktiengesellschaft Kontaktträger für Niederspannungs-Leistungsschalter
WO2002082482A1 (de) * 2001-04-04 2002-10-17 Siemens Aktiengesellschaft Schaltanordnung für niederspannungs-leistungsschalter
US6969816B2 (en) 2001-04-04 2005-11-29 Siemens Aktiengesellschaft Switching arrangement for low-voltage circuit breakers
EP2254136A1 (de) 2009-05-18 2010-11-24 Schneider Electric Industries SAS Apparat zur Bestimmung der Integrität von Kontakten, die durch die Variation der Wellendrehung der Pole gedrückt sind und sein Herstellungsverfahren
CN103617931A (zh) * 2013-12-03 2014-03-05 天津市百利电气有限公司 万能式断路器
EP3133626A1 (de) 2015-08-18 2017-02-22 Schneider Electric Industries SAS Elektrischer trennschalter

Also Published As

Publication number Publication date
US5210385A (en) 1993-05-11
EP0410902B1 (de) 1995-02-15
CA2053516C (en) 2002-08-20
HK1006892A1 (en) 1999-03-19
FR2650434B1 (fr) 1995-11-24
CA2053516A1 (en) 1993-04-17
DE69016869T2 (de) 1995-09-07
FR2650434A1 (fr) 1991-02-01
DE69016869D1 (de) 1995-03-23
ES2071066T3 (es) 1995-06-16

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