EP3499540B1 - Elektrisches gerät zum einschalten oder ausschalten eines stroms in einem elektrischen schaltkreis - Google Patents

Elektrisches gerät zum einschalten oder ausschalten eines stroms in einem elektrischen schaltkreis Download PDF

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Publication number
EP3499540B1
EP3499540B1 EP18204714.2A EP18204714A EP3499540B1 EP 3499540 B1 EP3499540 B1 EP 3499540B1 EP 18204714 A EP18204714 A EP 18204714A EP 3499540 B1 EP3499540 B1 EP 3499540B1
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EP
European Patent Office
Prior art keywords
conductor
electrical
contacts
neutral
fixed contacts
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.)
Active
Application number
EP18204714.2A
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English (en)
French (fr)
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EP3499540A1 (de
Inventor
Claude Burnot
Bernard Lebeau
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
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Schneider Electric Industries SAS
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Publication date
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Publication of EP3499540A1 publication Critical patent/EP3499540A1/de
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Publication of EP3499540B1 publication Critical patent/EP3499540B1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • the present invention relates to an electrical apparatus intended to establish or interrupt the current in an electrical circuit, said apparatus comprising at least two pairs of fixed contacts, each pair comprising two fixed contacts electrically connected respectively to an upstream terminal and to a downstream terminal of the apparatus, and associated with this pair of fixed contacts, a bridge of two movable contacts able to be moved between a first position in which it electrically connects these two fixed contacts, and a second position in which the flow of current between these two contacts fixed contacts is interrupted, one of the pairs of fixed contacts and its associated moving contact bridge being on a line carrying a phase, the other or another of the pairs of fixed contacts and its associated moving contact bridge being on a line carrying the neutral.
  • contactor is an electrotechnical device intended to establish or interrupt the flow of current by means of an electrical or pneumatic control device.
  • this contactor can be unipolar, bipolar, tripolar or even tetrapolar.
  • this contactor has one to four power contacts designed to withstand the appearance of an electric arc resulting from a high current on opening or closing.
  • a contactor In such a contactor, all the movable contacts are mounted in the same support so as to be able to be moved all at the same time when a closing or opening order is given to the contactor.
  • a contactor is capable of being actuated either manually or by means of a coil capable of being traversed by an electric current and of cooperating with a fixed armature integral with the fixed contacts of the contactor and a mobile armature integral with the mobile contacts of the contactor.
  • the fixed armature exerts no magnetic attraction on the mobile armature, the magnetic circuit is then open.
  • the fixed armature attracts the movable armature and sticks to it: the magnetic circuit is then closed. The movements of the mobile armature therefore cause the opening and closing of the contacts.
  • this device comprises a neutral line, being for example of the tetrapolar type comprising three phase lines and a neutral line
  • the neutral line is materialized in the same way as the phase line, that is to say that it comprises two fixed contacts electrically connected respectively to the two terminals, and a bridge of movable contacts forming two movable contacts capable of cooperating respectively with the two aforementioned fixed contacts.
  • All of these fixed and moving contacts each include a contact pad, which is likely to show signs of aging after a certain number of contactor operations. This phenomenon of aging of the contact pads can lead to breaks in the neutral likely to generate overvoltages, which can lead to partial or total destruction of the loads.
  • the installer In order to overcome this problem and to ensure that the electrical connection between the two upstream and downstream terminals on the neutral line is properly made, the installer usually installs as a precaution wired external wiring electrically connecting the two terminals, which represents a constraint for the installer.
  • the present invention solves these problems and proposes an electrical device intended to establish or interrupt the current in an electrical circuit, such as a contactor, making it possible to eliminate the risks of breaking the neutral without additional constraints for the installer.
  • the present invention relates to an electrical apparatus according to claim 1.
  • all the movable contact bridges of the device are mounted in the same support capable of being moved by control means between the two aforementioned positions, each movable contact bridge passing through an opening of the support, so as to able to be driven by the latter, towards the two positions respectively closed and open, the neutral conductor passing through the support through a recess arranged with respect to the conductor in such a way that the conductor does not prevent the movement of the support, the portion crossing of the neutral conductor being in the same plane as the movable contact bridges when these are in the closed position.
  • the aforementioned opening allows the insertion of this movable contact bridge parallel to the axis of the movable contact bridge, and the aforementioned recess is able to allow the insertion of the conductor in the support perpendicular to the longitudinal direction of this conductor.
  • the aforementioned neutral conductor is held and positioned in at least one slideway provided in the inner face of a wall belonging to the housing of the device.
  • this apparatus is of the tetrapolar type comprising three phase electrical lines and one electrical neutral line.
  • this device is a contactor.
  • this contactor C is housed in a housing B of substantially parallelepiped shape comprising a rear face 1 for fixing to a mounting rail, a front face 2 forming a nose, two side faces 3,4 by which the contactor can be attached to other devices of the same type on the rail, and two respectively upper 5 and lower 6 faces comprising respectively a set of downstream terminals A and a set of upstream terminals T.
  • this device is of the tetrapolar type and houses four electric lines 7,8,9,10 respectively a neutral line 7 and three phase lines 8,9,10.
  • Each of these electric lines is associated with an upstream terminal 11,12,13,14 and a downstream terminal 15,16,17,18, intended to be electrically connected, as regards the upstream terminals, to supply means , and as regards the downstream terminals, to outgoing devices, via cables or a comb.
  • Each phase power line 8,9,10 has two fixed contacts 19,20; 21.22; 23,24 electrically connected respectively to a downstream terminal and an upstream terminal, and a bridge of two movable contacts 25,26,27 forming at its two opposite ends two movable contacts a, b respectively intended to cooperate with the two fixed contacts 19,20 to 24. All the contacts comprise at the level of the contact zones, contact pads 28. All the fixed contacts are electrically connected and mechanically by their end located opposite the moving contacts, to the connection pad 12a, 13a, 14a, 16a, 17a, 18a of the corresponding terminal 12, 13, 14, 16, 17, 18.
  • the electrical connection between the upstream terminal 11 and the downstream terminal 15 on the neutral line 7 is permanent, and is therefore not equipped, as is the case for the other phase lines, with one movable contact and two fixed contacts.
  • this electrical connection consists of a rigid conductor 29 of flattened shape consisting of a single piece.
  • This conductor comprises a rectilinear part 29a having at its two opposite ends two folds at right angles 29b, 29c and forms, at its two opposite ends, two parts or connection pads 11a, 15a intended to be introduced respectively into the two corresponding terminals 11 ,15.
  • this neutral conductor 29 corresponds globally to that of each assembly associated with a phase current line, and comprising the two fixed contacts, the movable bridge, and the two connection pads.
  • the straight part 29a of the neutral conductor 29 is located in the same plane as each assembly comprising two fixed contacts and a movable contact associated with a phase line.
  • all the movable contact bridges 25,26,27 of the device are mounted in the same support 30 adapted to be moved by control means of the manual or electromagnetic type, between the two aforementioned positions.
  • Each movable contact bridge passes through an opening 30a of the support, so as to be able to be driven by the latter, towards the two positions respectively closed and open, the neutral conductor 29 for its part passing through the support 30 through a recess 30b arranged relative to the driver in such a way that this neutral conductor does not prevent the movement of the support 30, the neutral conductor being in the same plane as the movable contact bridges when the latter are in the closed position.
  • This opening 30a allows the insertion of this bridge parallel to the axis of the bridge, while the aforementioned recess 30b is able to allow the insertion of the neutral conductor in the support 30 perpendicular to the longitudinal direction of this conductor.
  • the assembly of the neutral conductor is carried out as follows.
  • the neutral conductor 29 is placed in two slides 31,32 of the case B of the device illustrated on the figures 7 and 8 , then the two neutral terminals 11,15 are mounted respectively at the two ends of the conductor.
  • the support 30 equipped with the movable contact bridges 25,26,27 is placed in the housing of the device until it is located just above the neutral conductor 29, after possible modification of the support 30 , as previously indicated, in the case where a support of the prior art is used. Then, the fixed contacts 19 to 24 are introduced into the housing B as well as the corresponding terminals! 1 to 18.
  • an electrical apparatus intended to establish or interrupt the current in an electrical circuit such as a contactor, has been produced, this apparatus making it possible to eliminate the problems of neutral breaks appearing after the aging of the contact pads, without external wiring. wired, using a shunt built into the device on the neutral line.
  • This solution can easily be integrated into existing contactors with a minimum of modifications to be made.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Breakers (AREA)
  • Keying Circuit Devices (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Slide Switches (AREA)

Claims (6)

  1. Elektrisches Gerät, dazu bestimmt, den Strom in einem Stromkreis herzustellen oder zu unterbrechen, wobei das Gerät mindestens zwei Paare von ortsfesten Kontakten, wobei jedes Paar zwei ortsfeste Kontakte aufweist, die mit einer vorgeschalteten bzw. einer nachgeschalteten Klemme des Geräts elektrisch verbunden sind, und mindestens einem Paar von mindestens zwei Paaren von ortsfesten Kontakten zugeordnet eine Brücke von zwei beweglichen Kontakten aufweist, die zwischen einer ersten Stellung, in der sie diese zwei ortsfesten Kontakte elektrisch verbindet, und einer zweiten Stellung verschoben werden kann, in der das Fließen des Stroms zwischen diesen zwei ortsfesten Kontakten unterbrochen ist, wobei eines der Paare von ortsfesten Kontakten und seine zugeordnete Brücke von beweglichen Kontakten auf einer eine Phase transportierenden Leitung sind, wobei das andere oder ein anderes der Paare von ortsfesten Kontakten und eine zugeordnete elektrische Verbindung auf einer den Neutralleiter transportierenden Leitung sind, wobei die elektrische Verbindung zwischen den zwei auf der Neutralleitung (7) befindlichen Klemmen (11, 15) eine Dauerverbindung ist, wobei die erwähnte elektrische Verbindung von einem einstückigen starren Leiter (29) hergestellt wird, der an seinen zwei gegenüberliegenden Enden zwei Endteile aufweist, die je die zwei Anschlussbereiche (11a, 15a) der zwei Klemmen (11, 15) bilden, dadurch gekennzeichnet, dass der erwähnte Leiter (29) eine U-Form aufweist, die einen geradlinigen Mittelteil (29a) aufweist, der an jedem seiner zwei gegenüberliegenden Enden zwei aufeinanderfolgende rechtwinklige Knicke (29b, 29c) aufweist, wobei der Neutralleiter (29) eine allgemeine Form aufweist, die derjenigen der Einheit der Leiter entspricht, die sich zwischen einer vorgeschalteten Klemme (12, 13, 14) und einer nachgeschalteten Klemme (16, 17, 18) auf jeder der Phasenleitungen (8, 9, 10) befinden.
  2. Elektrisches Gerät nach Anspruch 1, dadurch gekennzeichnet, dass alle Brücken von beweglichen Kontakten (25, 26, 27) des Geräts in einen gleichen Träger (30) montiert sind, der von Steuereinrichtungen zwischen den zwei erwähnten Stellungen verschoben werden kann, wobei jede Brücke von beweglichen Kontakten (25, 26, 27) eine Öffnung (30a) des Trägers (30) durchquert, um von diesem in die zwei Stellungen, geschlossen bzw. offen, angetrieben werden zu können, wobei der Neutralleiter (29) den Träger (30) durch eine Aussparung (30b) hindurch durchquert, die bezüglich des Leiters (29) so eingerichtet ist, dass der Leiter (29) die Verschiebung des Trägers (30) nicht verhindert, wobei der durchquerende Teil des Neutralleiters (29) sich in der gleichen Ebene wie die Brücken von beweglichen Kontakten (25, 26, 27) befindet, wenn diese in geschlossener Stellung sind.
  3. Elektrisches Gerät nach Anspruch 2, dadurch gekennzeichnet, dass die erwähnte Öffnung (30a) das Einführen dieser Brücke von beweglichen Kontakten parallel zur Achse der Brücke erlaubt, und die erwähnte Aussparung (30b) fähig ist, die Einführung des Leiters (29) in den Träger (30) lotrecht zur Längsrichtung dieses Leiters (29) zu erlauben.
  4. Elektrisches Gerät nach einem der Anspruche 1 bis 3, dadurch gekennzeichnet, dass der erwähnte Neutralleiter (29) in mindestens einer Gleitschiene (31, 32) gehalten und positioniert wird, die in der Innenseite einer Wand vorgesehen ist, die zum Gehäuse B des Geräts gehört.
  5. Elektrisches Gerät nach einem der vorhergehenden Anspruche, dadurch gekennzeichnet, dass es vom vierpoligen Typ ist, der drei elektrische Phasenleitungen (8, 9, 10) und eine elektrische Neutralleitung (7) aufweist.
  6. Elektrisches Gerät nach einem der Anspruche 1 à 5, dadurch gekennzeichnet, dass es ein Schütz C ist.
EP18204714.2A 2017-12-14 2018-11-06 Elektrisches gerät zum einschalten oder ausschalten eines stroms in einem elektrischen schaltkreis Active EP3499540B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1762101A FR3075458B1 (fr) 2017-12-14 2017-12-14 Appareil electrique destine a etablir ou interrompre le courant dans un circuit electrique

Publications (2)

Publication Number Publication Date
EP3499540A1 EP3499540A1 (de) 2019-06-19
EP3499540B1 true EP3499540B1 (de) 2023-05-03

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Application Number Title Priority Date Filing Date
EP18204714.2A Active EP3499540B1 (de) 2017-12-14 2018-11-06 Elektrisches gerät zum einschalten oder ausschalten eines stroms in einem elektrischen schaltkreis

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Country Link
EP (1) EP3499540B1 (de)
CN (1) CN109961986B (de)
FR (1) FR3075458B1 (de)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1057058A (en) * 1964-07-28 1967-02-01 B & R Relays Ltd Electrical contactor
FR2697371B1 (fr) * 1992-10-26 1994-11-18 Telemecanique Appareil contacteur.
US6437700B1 (en) * 2000-10-16 2002-08-20 Leviton Manufacturing Co., Inc. Ground fault circuit interrupter
FR2821980B1 (fr) * 2001-03-09 2003-04-25 Schneider Electric Ind Sa Bloc de contacts multipolaire
CN2681311Y (zh) * 2004-01-30 2005-02-23 厦门宏发电声有限公司 低高度多组触点交直流电磁继电器
US20060066425A1 (en) * 2004-09-29 2006-03-30 Gruner Klaus A Multi-phase electromagnetic relay assembly and motor assembly
DE102008026813B4 (de) * 2008-06-05 2016-11-17 Hager Electro S.A.S. Elektrischer selektiver Selbstschalter
EP2226820B1 (de) * 2009-03-05 2016-01-27 Rockwell Automation Technologies, Inc. Schaltphasenverschiebung zur Schützoptimierung
FR2973559B1 (fr) * 2011-03-31 2013-03-29 Schneider Electric Ind Sas Pont de contact mobile
US10020152B2 (en) * 2013-06-27 2018-07-10 Schneider Electric USA, Inc. Plug-on neutral connection
CN204155879U (zh) * 2014-11-04 2015-02-11 大连理工常熟研究院有限公司 一种用于漏电保护器的控制装置
CN206283054U (zh) * 2015-09-11 2017-06-27 拉斯科运营控股有限责任公司 用于电源供应线的热侦测插头
CN205487954U (zh) * 2016-01-11 2016-08-17 三信国际电器上海有限公司 一种接触器
CN107393766A (zh) * 2017-07-26 2017-11-24 上海西艾爱电子有限公司 一种桥式触点电磁继电器

Also Published As

Publication number Publication date
FR3075458A1 (fr) 2019-06-21
CN109961986A (zh) 2019-07-02
CN109961986B (zh) 2023-03-21
EP3499540A1 (de) 2019-06-19
FR3075458B1 (fr) 2020-09-11

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