EP1145265B1 - Dispositif de contact limitant le courant - Google Patents

Dispositif de contact limitant le courant Download PDF

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Publication number
EP1145265B1
EP1145265B1 EP00979541A EP00979541A EP1145265B1 EP 1145265 B1 EP1145265 B1 EP 1145265B1 EP 00979541 A EP00979541 A EP 00979541A EP 00979541 A EP00979541 A EP 00979541A EP 1145265 B1 EP1145265 B1 EP 1145265B1
Authority
EP
European Patent Office
Prior art keywords
cassette
contact
contact arrangement
arrangement according
arc quenching
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.)
Expired - Lifetime
Application number
EP00979541A
Other languages
German (de)
English (en)
Other versions
EP1145265A1 (fr
Inventor
Volker Heins
Axel Wendenius
Stefan Michel
Klaus Ochtinger
Berthold Krämer
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.)
Eaton Industries GmbH
Original Assignee
Moeller 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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1145265A1 publication Critical patent/EP1145265A1/fr
Application granted granted Critical
Publication of EP1145265B1 publication Critical patent/EP1145265B1/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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/36—Metal parts
    • H01H9/362—Mounting of plates in arc chamber
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet

Definitions

  • the invention relates to a current-limiting contact arrangement according to the preamble of claim 1.
  • Such contact arrangements are used in low-voltage switching devices such as circuit breakers, circuit breakers or motor protection switches.
  • the arcs which arise between the opening contacts are deflected as a result of the inductive effect of the short-circuit current flowing through the current loops in such a way that they run along arc conductors connected to the busbars and a common arc arrester arranged at a distance from them can be deduced more quickly and subsequently deleted.
  • the busbars, the arc arresters, the guide for the contact bridge and a contact pressure spring are stored pre-assembled in a centrally arranged insulating base and on both sides of it and parallel to the above-mentioned central plane, whereby the current loops are absorbed by the outer walls of the insulating shells.
  • This contact arrangement with one on each side Is provided to the outside opening arc extinguishing gap, is positively received by suitably designed inner surfaces of a switchgear housing.
  • a disadvantage is the complex pre-assembly of the contact arrangement.
  • a contact arrangement consisting of a busbar with a current loop and an arc arrester and a pivotable contact arm with an arc arrester, is also described, but no information is given on the assembly of this contact arrangement.
  • a generic current limiting contact arrangement is known from a fixed busbar with a fixed contact and with an arcing device, from a contact arm with a moving contact and from an arc quenching device in the form of a quenching plate package.
  • the busbar has two current loops which extend on both sides next to the only initial opening path of the movable contacts and in a curved surface running perpendicular to the central plane of the contact arrangement.
  • An insulating part is to be pushed over the current loops, which prevents an arc arising in the event of a short-circuit current between the opening contacts from passing onto the current loops and which holds an insulated magnetic yoke to be arranged above the current loops, the magnetic field of which over the rest of the opening path of the movable contact keeps the arc accelerates into the extinguishing device.
  • the busbar with the insulating part, the magnetic yoke and the quenching plate package must be installed individually in a switchgear housing - pre-assembly is not provided.
  • a further disadvantage is the requirement of the magnetic yoke and the relatively large width of the contact arrangement due to the shape of the current loops.
  • the invention is therefore based on the object of specifying a space-saving and technically advantageous contact arrangement.
  • the pre-assembled assembly which is easy to insert into the switchgear housing, is created by the inclusion and positive locking of the non-moving contact elements and the extinguishing plates by the two-part cassette.
  • the alignment of the current loops parallel to the median plane and their mounting and isolation from the other contact parts by the cassette creates a compact contact arrangement of small width, which due to its relative closed inside ensures a favorable flow behavior of the arc gases, the developing pressure due to the form-fitting Recording of the cassette in the switchgear housing is intercepted gently.
  • the largely closed cassette design also significantly improves the insulation strength between non-connected live parts.
  • the switchgear housing preferably consists of a low-quality insulating material, since a significant part of the mechanical stress and most of the thermal stress are absorbed by the cassette. The ease of installation of the cassette assembly is further improved by the latching of both cassette parts.
  • a particularly advantageous development of the invention consists in that the cassette consists of a chamber part provided with an outlet opening for receiving the extinguishing plates and a lid part provided with a through opening for fixing the extinguishing plates and for the contact arm, with the partly nested cassette parts and very large due to the narrow design of the passage opening Clearances and creepage distances between non-connected live parts are formed.
  • the extinguishing plates are preferably held between strip-like configurations of the assembled cassette parts.
  • the alignment of these training courses and, if appropriate, further training courses or recesses for fixing additional parts in the direction of the molding tools to be removed leads to a significant simplification of the molding process.
  • a stop means for intercepting the kinetic energy of the contact arm electrodynamically flung in the event of a short circuit can be fixed in the interior of the cassette in a simple manner.
  • suitable shapes can be used to hold insulating parts in the cassette, which emit extinguishing gases when arcing occurs.
  • a stationary contact arrangement part 1, a movable contact arrangement part 2, an actuating mechanism 3 and a trip block 4 are shown as parts of a three-pole, current-limiting circuit breaker only for the central pole, which are held by a lower part 5 and an upper part 6 of the switchgear housing.
  • the actuating mechanism 3 acts on a switching shaft 23 which extends over all three poles and on which contact arms are pivotally mounted, of which in turn only the contact arm 21 belonging to the central pole is shown with an end-side movable contact 211.
  • an immovable contact arrangement part 1 and a contact arm 21 form a contact arrangement in the sense of the invention.
  • the immovable contact arrangement parts 1 are inserted into chambers 51 of the lower part 5.
  • the immovable contact arrangement part 1 contains a busbar 11, an arc extinguishing device 13 and a cassette comprising a box-like chamber part 15 and a box-like cover part 17.
  • the busbar 11 contains at one end a fixed contact 111, which is in or out of connection with the movable one Contact 211 of the contact arm 21 occurs, as well as an arcing contact 113 and at the other end a connecting lug 115.
  • the busbar 11 also contains two current loops 117, which are bent upwards laterally from the remaining part of the busbar 11 and are arranged in planes on both sides parallel to the central plane XY of the contact arrangement as well as along the entire opening path of the movable contact 211.
  • the two-part cassette 15, 17 is formed from insulating material and is essentially supported on all sides by the corresponding inner surfaces of the lower part 5 and upper part 6 after the installation of the immovable contact arrangement part 1.
  • the insulating material from which the cassette parts 15 and 17 consist should be a high-quality material in electrical and thermal terms. In order to the switchgear housing can consist of a material that is less demanding and therefore cheaper.
  • the quenching plates 131 of the arc quenching device 13 are held in a form-fitting manner in the interior of the cassette.
  • the chamber part 15 and, to a small extent, the cover part 17 have strip-like designs 152 on the opposite inner sides 151, with which the extinguishing plates 131 are spaced apart and held laterally.
  • the formations 152 are oriented such that they do not represent an obstacle when the cassette parts are removed from the molds.
  • the part of the busbar 11 connected to the fixed contact 111 extends via an inlet opening into the interior of the cassette 15, 17.
  • openings 156 and 176 which run out on one side, are provided on the lower walls of the cassette parts 15 and 17, which, after assembly, provide the continuous opening Form entry opening 156 + 176.
  • the current loops 117 and thus the conductor rail are held in a form-fitting manner.
  • guide strips 157 and 177 are formed on both sides laterally outwards.
  • the busbar 11 When assembling the immovable contact arrangement part 1 with its current loops 117, the busbar 11 is pushed in a straight line and in a direction X, which is approximately perpendicular to the fixed contact 111, between the guide strips 157 and 177 over the assembled cassette 15, 17 and against displacements in or set against the direction Y by the guide strips 157 and 177.
  • the present invention is not limited to the embodiments described above, but also encompasses all embodiments having the same effect in the sense of the invention.
  • the invention can be further developed, for example, by fixing stop means for the contact arm 21 or, respectively, and / or arc-extinguishing insulating material parts during assembly in the cassette 15, 17 for short-circuit currents.
  • the two cassette parts 15 and 17 can be connected to one another via integrated latching elements.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (11)

  1. Dispositif de contact limitant le courant comprenant
    - une barre conductrice (11) dotée d'un contact fixe (111) et de deux boucles conductrices (117) alignées de part et d'autre du plan médian (XY) du dispositif de contact,
    - un bras de contact (21) comprenant un contact mobile (211) qui peut être mis en contact et hors contact avec le contact fixe (111), ainsi qu'
    - un dispositif d'extinction d'arc (13) comprenant des ailettes de soufflage (131),
    caractérisé en ce que
    - les boucles conductrices (117) s'étendent dans des plans parallèles au plan médian (XY) et le long de l'entier trajet d'ouverture du contact mobile (211),
    - une cassette (15, 17) comprenant deux parties réalisées d'une matière isolante, les ailettes de soufflage (131) étant retenues par blocage mécanique à l'intérieur de la cassette, la portion de la barre conductrice (11) comprenant le contact fixe (111) ainsi que le bras de contact (21) s'étendant à l'intérieur de ladite cassette, et les boucles conductrices (117) étant reçues par blocage mécanique par les parois extérieures de ladite cassette et,
    - la combinaison de ladite cassette (15, 17) comprenant des ailettes de soufflage (131) et la barre conductrice (11) étant reçue par blocage mécanique par les surfaces intérieures conformées de manière appropriée d'un boîtier d'appareil de commutation (5, 6).
  2. Dispositif de contact selon la revendication 1, caractérisé en ce que la cassette (15, 17) est supportée de tous les côtés dans le boîtier d'appareil de commutation (5, 6).
  3. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que la cassette (15, 17) est réalisée en matière isolante de qualité supérieure à celle du boîtier d'appareil de commutation (5, 6).
  4. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que les deux parties de la cassette (15, 17) peuvent être assemblés l'une avec l'autre par encliquetage.
  5. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que la cassette est constituée
    - d'une partie chambre sous forme de boîte (15) recevant à son intérieur les ailettes de soufflage (131) de telle manière que lesdites ailettes de soufflage soient espacées, la paroi arrière (154) de ladite première partie chambre présentant au moins un orifice de soufflage (153) des gaz d'extinction de l'arc, ainsi que
    - d'une partie couvercle sous forme de boîte (17) comprenant des parois latérales (171 ; 172) qui s'étendent partiellement à l'intérieur de la partie chambre (15), la face frontale (173) desdites parois latérales prévues (171) retenant les ailettes d'extinction (131) par blocage mécanique et, dans la paroi arrière de ladite partie couvercle (17) étant ménagé un orifice étroit (175) pour le passage du bras de contact (21).
  6. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que les ailettes de soufflage (131) sont maintenues entre des nervures (152) conformées dans les parois intérieures (151) de ladite cassette (15, 17) et alignées en direction de démoulage de la partie respective de la cassette (15 ; 17).
  7. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que la portion de la barre conductrice (11) qui est solidaire de l'élément de contact fixe (111) s'étend par un orifice d'entrée (156 + 176) formé par les deux parties de la cassette (15; 17).
  8. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que la zone des parois arrières, qui sont opposées l'une à l'autre (154 ; 174), des deux parties de la cassette (15 ; 17) est dotée de rails de guidage (157 ; 177) pour les boucles conductrices (117), lesdits rails de guidage étant prévus latéralement vers l'extérieur.
  9. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que la barre conductrice (11) avec ses boucles conductrices (117) est capable d'être glissée sur la cassette dans une ligne droite et dans une direction qui est sensiblement perpendiculaire par rapport au contact fixe (111).
  10. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que des moyens de butée sont prévus pour le bras de contact (21) et retenus par blocage mécanique à l'intérieur de la cassette (15, 17) et par ladite cassette (15, 17).
  11. Dispositif de contact selon l'une des revendications précédentes, caractérisé en ce que des éléments d'extinction de l'arc en matière isolante sont retenus par blocage mécanique à l'intérieur de la cassette (15, 17) et par ladite cassette (15, 17).
EP00979541A 1999-11-25 2000-11-08 Dispositif de contact limitant le courant Expired - Lifetime EP1145265B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19956656 1999-11-25
DE19956656A DE19956656A1 (de) 1999-11-25 1999-11-25 Strombegrenzende Kontaktanordnung
PCT/EP2000/011026 WO2001039224A1 (fr) 1999-11-25 2000-11-08 Dispositif de contact limitant le courant

Publications (2)

Publication Number Publication Date
EP1145265A1 EP1145265A1 (fr) 2001-10-17
EP1145265B1 true EP1145265B1 (fr) 2003-01-29

Family

ID=7930248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00979541A Expired - Lifetime EP1145265B1 (fr) 1999-11-25 2000-11-08 Dispositif de contact limitant le courant

Country Status (5)

Country Link
US (1) US6518530B2 (fr)
EP (1) EP1145265B1 (fr)
JP (1) JP2003515880A (fr)
DE (2) DE19956656A1 (fr)
WO (1) WO2001039224A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20316027U1 (de) * 2003-10-18 2004-01-15 Moeller Gmbh Elektrisches Schaltgerät mit Einrichtung zur Lichtbogenlöschung
US8604653B2 (en) 2005-06-25 2013-12-10 Inpro/Seal, LLC Current diverter ring
DE102006026064B4 (de) * 2006-06-03 2008-06-05 Moeller Gmbh Elektrische Schaltanordnung und Montageverfahren
US7716816B2 (en) * 2006-09-22 2010-05-18 Rockwell Automation Technologies, Inc. Method of manufacturing a switch assembly
US7551050B2 (en) * 2006-09-22 2009-06-23 Rockwell Automation Technologies, Inc. Contactor assembly with arc steering system
DE102007003674B3 (de) * 2007-01-18 2008-11-06 Moeller Gmbh Lagerungseinrichtung zur Aufnahme einer Lagerachse
AT509277A1 (de) * 2008-03-05 2011-07-15 Moeller Gebaeudeautomation Gmbh Schaltgerät
DE102008015196B4 (de) * 2008-03-20 2009-11-19 Siemens Aktiengesellschaft Lichtbogen-Löschvorrichtung für ein Schaltgerät, Schaltgerät mit Lichtbogen-Löschvorrichtung sowie Verfahren zum Herstellen einer Lichtbogen -Löschvorrichtung
DE102009023556B4 (de) * 2009-05-30 2012-01-19 Abb Ag Elektrisches Schaltgerät mit einem thermischen Auslöser
FR2972074B1 (fr) * 2011-02-25 2013-10-11 Schneider Electric Ind Sas Cassette d'extinction d'arc, bloc de coupure unipolaire comportant une telle cassette et dispositif de coupure comportant un tel bloc
TW201338356A (zh) 2011-12-08 2013-09-16 Inpro Seal Llc 電流分流器環
EP2650893A1 (fr) * 2012-04-12 2013-10-16 ABB Oy Appareil de commutation de courant électrique
EP2650894B1 (fr) 2012-04-12 2018-06-06 ABB Oy Appareil de commutation de courant électrique
EP2650896B1 (fr) 2012-04-12 2017-12-27 ABB Oy Appareil de commutation de courant électrique
WO2013192169A1 (fr) 2012-06-18 2013-12-27 Inpro/Seal Llc Bague déviatrice de courant
US9831739B2 (en) 2012-06-18 2017-11-28 Inpro/Seal Llc Explosion-proof current diverting device
CN102800539B (zh) * 2012-08-13 2015-02-11 江苏辉能电气有限公司 具有限流装置的小电流塑壳断路器可动静触头结构
CN105097307A (zh) * 2014-05-15 2015-11-25 沈阳工业大学 新型控制与保护开关触头系统
CN105762041B (zh) * 2016-05-17 2017-09-12 浙江人民电器有限公司 一种直流断路器灭弧结构
CN106356240A (zh) * 2016-11-02 2017-01-25 乐清市也为电气有限公司 一种隔离开关的动、静触头装置
US10128069B1 (en) * 2017-07-18 2018-11-13 Eaton Intelligent Power Limited Electrical switching apparatus and debris barrier therefor
CN112802722A (zh) * 2021-01-27 2021-05-14 西安理工大学 一种静触头结构、触头系统及断路器
US11749475B2 (en) * 2021-11-12 2023-09-05 Eaton Intelligent Power Limited Arc chute debris blocker

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DE19715116C2 (de) * 1997-04-11 1999-05-12 Aeg Niederspannungstech Gmbh Lichtbogenkammersystem

Also Published As

Publication number Publication date
DE50001167D1 (de) 2003-03-06
US6518530B2 (en) 2003-02-11
JP2003515880A (ja) 2003-05-07
DE19956656A1 (de) 2001-05-31
US20020056705A1 (en) 2002-05-16
WO2001039224A1 (fr) 2001-05-31
EP1145265A1 (fr) 2001-10-17

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