EP1192628A1 - Ensemble contact de commutation de commande d'un disjoncteur basse tension dote de contacts principaux, de contacts intermediaires et de contacts de coupure - Google Patents

Ensemble contact de commutation de commande d'un disjoncteur basse tension dote de contacts principaux, de contacts intermediaires et de contacts de coupure

Info

Publication number
EP1192628A1
EP1192628A1 EP00949151A EP00949151A EP1192628A1 EP 1192628 A1 EP1192628 A1 EP 1192628A1 EP 00949151 A EP00949151 A EP 00949151A EP 00949151 A EP00949151 A EP 00949151A EP 1192628 A1 EP1192628 A1 EP 1192628A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
movable
fixed
arcing
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
EP00949151A
Other languages
German (de)
English (en)
Other versions
EP1192628B1 (fr
Inventor
Michael Bach
Michael Sebekow
Günter SEIDLER-STAHL
Detlev Schmidt
Ingo Thiede
Sezai TÜRKMEN
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1192628A1 publication Critical patent/EP1192628A1/fr
Application granted granted Critical
Publication of EP1192628B1 publication Critical patent/EP1192628B1/fr
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
    • 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
    • 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

Definitions

  • Switch contact arrangement of a low-voltage circuit breaker with main contacts, intermediate contacts and break contacts
  • the invention relates to a switching contact arrangement of a low-voltage circuit breaker with the following features:
  • a fixed contact group consisting of - a fixed main contact, a fixed intermediate contact, a fixed tear-off contact, a fixed arcing horn, a movable for switching on and off relative to the fixed contact group arranged movable contact group, a contact lever belonging to the movable contact group and pivotably mounted against the force of a contact force spring, with - a movable main contact, a movable intermediate contact,
  • the tear-off contacts are opened after the opening of the main contacts formed by contact pads.
  • Switch contact arrangements of the type mentioned, as are known from DE-B 1 118 317, are distinguished from arrangements with only one or two contact points by a higher switching capacity, an increased service life and less heating when switched on continuously. They are therefore used in low-voltage circuit breakers for particularly high loads, which can be designed for a rated current of several thousand amperes and a switching capacity of up to approximately 100,000 A.
  • a shutdown is in progress in such a way that the final separation of the movable contact group from the fixed contact group takes place only at the tear-off contacts, which according to their function are also referred to as burn-off contacts, arcing contacts or also pre-contacts.
  • the main contacts are opened beforehand so that they are not or only slightly stressed by switching arcs. Therefore, the main contacts remain in good condition over a large number of circuits and the current carrying capacity is maintained over a long period of time with little heating in continuous operation.
  • the invention is based on the object of creating a switching contact arrangement with triple contacting of the type mentioned at the outset, which requires a substantially lower outlay for production and is also distinguished by an increased service life.
  • the fixed intermediate contact is formed by an end face of a busbar carrying the fixed main contact
  • the fixed tear-off contact is formed by a protrusion protruding over the end face of the busbar of the fixed arcing horn
  • the movable intermediate contact is formed by a protrusion of the movable arcing horn
  • the movable tear-off contact is formed by a portion of the flank of the movable arcing horn facing the fixed arcing horn.
  • Circuit breakers can in turn be arranged pivotably about a pivot bearing movable contact carrier, the pivoting of the contact lever relative to the contact carrier about an associated pivot bearing being limited by a stop.
  • the pivoting angle of the contact lever is limited when the tear-off contacts touch and until the intermediate contacts touch when the switch is turned on. This has a favorable effect on the mechanical stress on the contact levers, which is extremely high due to the high switching speed of modern circuit breakers. The invention is explained below with reference to the embodiment shown in the figures.
  • FIG. 1 is a schematic illustration of a low-voltage circuit breaker with a switch contact arrangement.
  • FIG. 2 shows a switch contact arrangement according to the invention in the switched-on state.
  • FIGS. 3 and 4 Parts of the switch contact arrangement according to FIG. 2 that are essential to the invention are shown in FIGS. 3 and 4 in successive phases of a switch-off process.
  • the multi-pole low-voltage circuit breaker 1 shown schematically in section in FIG. 1 has a housing 2 and busbars 3 and 4 protruding from the rear thereof.
  • a switch contact arrangement designated as a whole by 5, is in electrical connection with the busbars 3 and 4 and permits the closing and opening of a circuit for consumers (not shown).
  • the switch contact arrangement 5 comprises a fixed contact group 7, which is connected to the upper busbar 3, and a movable contact group 10, which is connected to the lower busbar by means of flexible conductors 11.
  • the movable contact group 10 includes a contact carrier 12 which is pivotally mounted in the housing 2 of the circuit breaker 1 and can be actuated by a drive device 13 for switching on and off.
  • a contact lever 14 pivotally mounted on the contact carrier 12 is biased in the direction of the fixed contact group 7 by a contact force spring 15.
  • a switch shaft 16 serves to distribute the drive force provided by the drive device 13 to a plurality of switch contact arrangements arranged parallel to one another in the housing 2. 5, each of which is connected to the selector shaft 16 by a lever mechanism 17.
  • FIGS. 2, 3 and 4 the same reference numerals are used for the parts that correspond to FIG. 1.
  • the fixed contact group 7 is provided on the end face of its busbar 3 with a contact pad which forms a fixed main contact 20.
  • the part of the end face of the busbar 3 located above the main contact 20 forms a fixed intermediate contact 21.
  • a movable main contact 22 interacts with the fixed main contact 20 and is formed by a contact pad attached to the contact lever 14.
  • a bulge of the contact lever 14 serves as a movable intermediate contact 23.
  • a fixed arcing horn 25 is fastened on the busbar 3 by means of a screw connection 24, which protrudes with a bulge over the busbar 3 and thereby forms a fixed tear-off contact 26.
  • the movable contact group 10 comprises a contact carrier 12 and a contact lever 14.
  • the contact carrier 12 can be moved about a fixed pivot bearing 27, while the contact lever 14 can be moved about a pivot bearing 30 arranged on the contact carrier 12.
  • Two parallel contact force springs 15 are supported on the contact carrier 12 and pretension the contact lever 14 against the fixed contact group 7.
  • the contact lever 14 is designed as an arcing horn 31, a portion of the arcing horn 31 serving as a movable tear-off contact 32, as will be explained below.
  • the transfer of the switching contact arrangement 5 to the OFF position is initiated in a known manner by a corresponding rotation of the switching shaft 16.
  • the contact carrier 12 now pivots clockwise, while the contact lever 14 initially remains in engagement with the fixed contact group 7 under the influence of the contact force springs 15 and pivots counterclockwise around its pivot bearing 30 located on the contact carrier 12.
  • the position according to FIG. 3 occurs as the first characteristic intermediate position. This position is characterized in that both the main contacts 20 and 22 and the intermediate contacts 21 and 23 touch. As a result, the commutation of the current flowing via the switch contact arrangement 5 is prepared for the intermediate contacts.
  • FIG. 4 shows, as a further characteristic intermediate position, the state that both the main contacts 20 and 22 and the intermediate contacts 23 and 32 are separated from one another and the current to be interrupted only flows through the break contacts 26 and 32.
  • a switching arc is ignited at the tear-off contacts 26 and 32.
  • the tear-off contacts are components of the fixed and the movable arcing horn 25 or 31, there are therefore particularly favorable conditions for the switching arc to continue to run and to be transferred into the arcing chamber 6 (FIG. 1). This property enables surprisingly short switching times.
  • the characteristic intermediate positions explained are assumed in the reverse order. Therefore, according to FIG. 4, the tear contacts 26 and 32 first touch before the positions according to FIGS. 3 and 2 are adopted. Since the movable tear-off contact 32 is arranged in the flank of the arcing horn 31 of the contact lever 14 facing the fixed arcing horn 25, the contact lever 14 is mechanically intercepted near its end.
  • the position of the first contact contact when switching on is closer to Center of the contact lever, which can lead to considerable bending stress of the contact lever 14.
  • the invention can also be used in conjunction with the known multiple contact systems (cf., for example, DE 296 15 566 Ul, EP 0 410 902 Bl).
  • the described design of the arcing horns is also only to be understood as an example. Therefore, the fixed arcing horn 25 can also be formed in one piece with the fixed intermediate contact 21 (EP 0 325 767 B1) or additionally formed in one piece with the busbar (EP 0 859 387 A2).
  • the movable arcing horn can be designed in a known manner as a separate part and attached to the contact lever (EP 0 325 767 B1).
  • other designs of stops for limiting the pivoting angle of the contact lever 14 are considered suitable for the purposes of the invention.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

Ensemble contact de commutation de commande (5) d'un disjoncteur basse tension (1), qui comporte un groupe de contacts fixe (7) et un groupe de contacts mobile (10) coopérant avec le groupe de contacts fixe. Les groupes de contacts (7, 10) possèdent des contacts principaux (20, 22) coopérant entre eux ainsi que des contacts intermédiaires (21, 23) et des contacts de coupure (26, 32) coopérant également entre eux. Les deux groupes de contacts (7, 10) sont en outre équipés d'une tête de déviation d'arc électrique (25, 31) destinée à transmettre un arc électrique de commutation à une boîte de soufflage (6). Les contacts de coupure sont intégrés dans les têtes de déviation d'arc électrique (25, 31). Seuls les contacts principaux sont conçus comme des appuis de contact, tandis que les autres sites de contact sont constitués par les barres conductrices (3, 4) et les têtes de déviation d'arc électrique (25, 31). L'ensemble (5) décrit se caractérise par une conception simple ainsi que par une durée de vie mécanique et électrique prolongée. En outre, ledit ensemble permet d'obtenir des durées de commutation particulièrement courtes.
EP00949151A 1999-07-02 2000-07-03 Ensemble contact de commutation de commande d'un disjoncteur basse tension dote de contacts principaux, de contacts intermediaires et de contacts de coupure Expired - Lifetime EP1192628B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19932010 1999-07-02
DE19932010A DE19932010C1 (de) 1999-07-02 1999-07-02 Schaltkontaktanordnung eines Niederspannungs-Leistungschalters mit Hauptkontakten, Zwischenkontakten und Abreißkontakten
PCT/DE2000/002185 WO2001003153A1 (fr) 1999-07-02 2000-07-03 Ensemble contact de commutation de commande d'un disjoncteur basse tension dote de contacts principaux, de contacts intermediaires et de contacts de coupure

Publications (2)

Publication Number Publication Date
EP1192628A1 true EP1192628A1 (fr) 2002-04-03
EP1192628B1 EP1192628B1 (fr) 2003-02-19

Family

ID=7914192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00949151A Expired - Lifetime EP1192628B1 (fr) 1999-07-02 2000-07-03 Ensemble contact de commutation de commande d'un disjoncteur basse tension dote de contacts principaux, de contacts intermediaires et de contacts de coupure

Country Status (6)

Country Link
US (1) US6689979B1 (fr)
EP (1) EP1192628B1 (fr)
JP (1) JP2003504801A (fr)
CN (1) CN1134803C (fr)
DE (2) DE19932010C1 (fr)
WO (1) WO2001003153A1 (fr)

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DE20103230U1 (de) * 2001-02-16 2002-06-20 Siemens Ag Niederspannungs-Leistungsschalter mit einer Lageranordnung für die Schaltwelle
DE10219558B4 (de) 2002-04-26 2004-08-26 Siemens Ag Elektrischer Leistungsschalter mit einer Anschlussschiene und einem Lichtbogenhorn
DE102004059097A1 (de) * 2004-12-06 2006-06-08 Siemens Ag Schaltvorrichtung mit temperaturabhängigem Widerstand zum Löschen eines Lichtbogens
US9700784B1 (en) * 2005-06-10 2017-07-11 Dale Paul Krumel Method of playing a card game as a casino style game, slot machine or video game
DE102006048124A1 (de) * 2006-10-06 2008-04-10 Siemens Ag Fangeinrichtung für einen Antriebsstrang
DE102006059466A1 (de) * 2006-12-14 2008-06-19 Krütten, Viktor Elektrischer Schalter mit verdrehbar gelagertem Kontaktelement
DE102007001471A1 (de) 2007-01-05 2008-07-10 Siemens Ag Elektrische Schalteinrichtung
US9058939B2 (en) * 2011-06-29 2015-06-16 Schneider Electric USA, Inc. Configuration of an arc runner for a miniature circuit breaker
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
WO2015147824A1 (fr) * 2014-03-27 2015-10-01 Schneider Electric USA, Inc. Contact de commutateur de lame de couteau avec une partie à résistance élevée
US9685287B2 (en) 2014-12-03 2017-06-20 Eaton Corporation Circuit breakers with moving contact having heel-toe action
US9697975B2 (en) * 2014-12-03 2017-07-04 Eaton Corporation Circuit breakers with moving contact arm with spaced apart contacts
CN104701110B (zh) * 2015-03-23 2016-08-17 乐清野岛机电有限公司 一种大容量断路器
CN104701109B (zh) * 2015-03-23 2016-10-12 乐清野岛机电有限公司 一种断路器的触头系统
KR101704989B1 (ko) * 2015-04-30 2017-02-10 현대중공업 주식회사 회로차단기의 가동접촉자
KR20170077659A (ko) * 2015-12-28 2017-07-06 엘에스산전 주식회사 기중차단기의 접점 구조
EP3382730B1 (fr) 2017-03-27 2020-03-04 ABB Schweiz AG Disjoncteur basse tension
CN111681920B (zh) * 2020-05-21 2023-04-25 上海电器科学研究所（集团）有限公司 一种具有触指弹簧力监测功能的断路器触头系统

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DE1118317B (de) * 1960-01-18 1961-11-30 Licentia Gmbh Kontaktanordnung fuer elektrische Leistungsschalter
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Also Published As

Publication number Publication date
CN1359528A (zh) 2002-07-17
DE19932010C1 (de) 2001-03-08
JP2003504801A (ja) 2003-02-04
US6689979B1 (en) 2004-02-10
WO2001003153A1 (fr) 2001-01-11
EP1192628B1 (fr) 2003-02-19
CN1134803C (zh) 2004-01-14
DE50001290D1 (de) 2003-03-27

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