EP3499540A1 - Electrical appliance to establish or interrupt the current in an electric circuit - Google Patents

Electrical appliance to establish or interrupt the current in an electric circuit Download PDF

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Publication number
EP3499540A1
EP3499540A1 EP18204714.2A EP18204714A EP3499540A1 EP 3499540 A1 EP3499540 A1 EP 3499540A1 EP 18204714 A EP18204714 A EP 18204714A EP 3499540 A1 EP3499540 A1 EP 3499540A1
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EP
European Patent Office
Prior art keywords
conductor
fixed contacts
electrical
neutral
contacts
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Granted
Application number
EP18204714.2A
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German (de)
French (fr)
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EP3499540B1 (en
Inventor
Claude Burnot
Bernard Lebeau
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3499540A1 publication Critical patent/EP3499540A1/en
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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 for establishing or interrupting the current in an electrical circuit, said apparatus comprising at least two pairs of fixed contacts, each pair having two fixed contacts electrically connected respectively to an upstream terminal and a downstream terminal of the device, 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 is interrupted, one of the pairs of fixed contacts and its associated mobile contact bridge being on a line carrying a phase, the other or another pair of fixed contacts and its associated mobile contact bridge being on a line carrying the neutral.
  • Such an apparatus known as a “contactor” is known, which is an electrotechnical apparatus intended to establish or interrupt the passage of current through an electrical or pneumatic control device.
  • this contactor can be unipolar, bipolar, tripolar or tetra polar.
  • this contactor has one to four power contacts designed to resist the appearance of an electric arc from a strong current on opening or closing.
  • a contactor In such a contactor, all the movable contacts are mounted in the same support so that they can all be moved at the same time when a closing or opening command is given to the contactor.
  • a contactor is able to be actuated either manually or by means of a coil able to be traversed by an electric current and to cooperate with a fixed armature integral with the fixed contacts of the contactor and a movable armature secured to the movable contacts of the contactor.
  • the fixed armature exerts no magnetic attraction on the moving armature, the magnetic circuit is then open.
  • the fixed armature attracts the mobile armature and sticks to it: the magnetic circuit is closed. The movements of the mobile armature thus cause the opening and closing of the contacts.
  • this apparatus comprises a neutral line, for example being of the tetra polar 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 it comprises two fixed contacts electrically connected respectively to the two terminals, and a movable contact bridge forming two movable contacts capable of cooperating respectively with the two aforementioned fixed contacts.
  • the installer In order to overcome this problem and to make sure that the electrical connection between the two upstream and downstream terminals on the neutral line is well achieved, the installer usually sets up by cautious wired external wiring electrically connecting both terminals, which is a constraint for the installer.
  • the present invention solves these problems and proposes an electrical apparatus for establishing or interrupting the current in an electrical circuit, such as a contactor, to eliminate the risk of neutral breakage without additional constraints for the installer.
  • the subject of the present invention is an electrical apparatus intended to establish or interrupt the current in an electrical circuit of the kind mentioned above, this apparatus being characterized in that the electrical connection between the two terminals situated on the neutral line is a permanent link.
  • the aforementioned electrical connection is made by a rigid conductor in one piece having at its two opposite ends respectively two end portions respectively forming the two connection pads respectively of the two terminals.
  • the aforementioned conductor has a U-shape having a rectilinear central portion having at each of its two opposite ends two successive right-angle pleats, said neutral conductor having a general shape corresponding to that of the set of conductors located between an upstream terminal and a downstream terminal, on each of the phase lines.
  • all the mobile contact bridges of the apparatus are mounted in the same support able to be moved by control means between the two aforementioned positions, each bridge of movable contacts passing through an opening of the support, so as to being able to be driven by it, to the two positions respectively closed and open, the neutral conductor passing through the support through a recess arranged relative to the conductor in such a way that the driver does not prevent the displacement of the support, the portion traversante the neutral conductor being in the same plane as the movable contact bridges when they are in the closed position.
  • the aforementioned opening allows the insertion of this mobile contact bridge parallel to the axis of the mobile contact bridge, and the aforementioned recess is adapted to allow insertion of the conductor into the support perpendicular to the longitudinal direction of this conductor.
  • the aforementioned neutral conductor is held and positioned in at least one slide provided in the inner face of a wall belonging to the housing of the apparatus.
  • this apparatus is of the tetra-polar type comprising three phase electrical lines and a neutral electrical line.
  • this apparatus is a contactor.
  • this contactor C is housed in a substantially parallelepiped-shaped housing B having a rear face 1 for attachment to a mounting rail, a front face 2 forming a nose, and two lateral faces 3,4 through which the contactor can to be attached to other devices of the same type on the rail, and two respectively upper 5 and lower 6 faces respectively comprising a set of downstream terminals A and a set of upstream terminals T.
  • this apparatus is of the tetra-polar type and houses four electrical lines 7, 8, 9, 10, respectively one neutral line 7 and three phase lines 8, 9, 10.
  • Each 8,9,10 phase electrical line comprises 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 contact areas, contact pads 28.
  • the fixed contacts are electrically connected and mechanically by their end located opposite the movable 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, a movable contact and two fixed contacts.
  • this electrical connection is constituted by a rigid conductor 29 of flattened form consisting of a single piece.
  • This conductor comprises a rectilinear portion 29a having at its two opposite ends two right-angled folds 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.
  • the shape of this neutral conductor 29 corresponds globally to that of each set associated with a phase current line, and comprising the two fixed contacts, the moving bridge, and the two connection pads.
  • the rectilinear portion 29a of the neutral conductor 29 is located in the same plane as each set comprising two fixed contacts and a moving contact associated with a phase line.
  • all the movable contact bridges 25,26,27 of the apparatus 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 driven by it, to the two respectively closed and open positions, 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 displacement of the support 30, the neutral conductor being in the same plane as the mobile contact bridges when they 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 adapted to allow the insertion of the neutral conductor in the support 30 perpendicular to the longitudinal direction of this conductor.
  • a support such as that usually used in the prior art contactors, by removing an end portion 30c thereof so as to allow insertion of the neutral conductor in this support perpendicular to its longitudinal direction.
  • the neutral conductor is installed as follows. First of all, the neutral conductor 29 is placed in two slideways 31, 32 of the housing B of the apparatus illustrated in FIGS. Figures 7 and 8 then the two neutral terminals 11, 15 are respectively mounted at both ends of the conductor.
  • the support 30 equipped with the movable contact bridges 25,26,27 is placed in the housing of the apparatus 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 and the corresponding terminals 11 to 18.

Abstract

La présente invention concerne un appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique, ledit appareil comportant au moins deux paires de contacts fixes (19 à 24), chaque paire comportant deux contacts fixes reliés électriquement respectivement à une borne amont (11 à 14) et à une borne aval (15 à 18) de l'appareil, et associée à cette paire de contacts fixes, un pont de deux contacts mobiles (25 à 27) apte à être déplacé entre une première position dans laquelle il relie électriquement ces deux contacts fixes, et une seconde position dans laquelle la circulation du courant entre ces deux contacts fixes est interrompue, l'une des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne véhiculant une phase (8,9,10), l'autre ou une autre des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne (7) véhiculant le neutre. Cet appareil est caractérisé en ce que la liaison électrique entre les deux bornes (11,15) situées sur la ligne de neutre (7) est une liaison permanente.

Figure imgaf001
The present invention relates to an electrical apparatus for establishing or interrupting the current in an electrical circuit, said apparatus comprising at least two pairs of fixed contacts (19 to 24), each pair having two fixed contacts electrically connected respectively to an upstream terminal (11). to 14) and to a downstream terminal (15 to 18) of the apparatus, and associated with this pair of fixed contacts, a bridge of two movable contacts (25 to 27) able to be moved between a first position in which it connects electrically these two fixed contacts, and a second position in which the flow of current between these two fixed contacts is interrupted, one of the pairs of fixed contacts and its associated mobile contact bridge being on a line carrying a phase (8.9 10), the other one or other of the fixed contact pairs and its associated moving contact bridge being on a line (7) conveying the neutral. This apparatus is characterized in that the electrical connection between the two terminals (11, 15) located on the neutral line (7) is a permanent link.
Figure imgaf001

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique, ledit appareil comportant au moins deux paires de contacts fixes, chaque paire comportant deux contacts fixes reliés électriquement respectivement à une borne amont et à une borne aval de l'appareil, et associée à cette paire de contacts fixes, un pont de deux contacts mobiles apte à être déplacé entre une première position dans laquelle il relie électriquement ces deux contacts fixes, et une seconde position dans laquelle la circulation du courant entre ces deux contacts fixes est interrompue, l'une des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne véhiculant une phase, l'autre ou une autre des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne véhiculant le neutre.The present invention relates to an electrical apparatus for establishing or interrupting the current in an electrical circuit, said apparatus comprising at least two pairs of fixed contacts, each pair having two fixed contacts electrically connected respectively to an upstream terminal and a downstream terminal of the device, 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 is interrupted, one of the pairs of fixed contacts and its associated mobile contact bridge being on a line carrying a phase, the other or another pair of fixed contacts and its associated mobile contact bridge being on a line carrying the neutral.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

On connaît un tel appareil appelé « contacteur », lequel est un appareil électrotechnique destiné à établir ou interrompre le passage du courant par l'intermédiaire d'un dispositif de commande électrique ou pneumatique. Selon son utilisation, ce contacteur peut être unipolaire, bipolaire, tripolaire ou encore tétra polaire. En d'autres termes, ce contacteur possède d'un à quatre contacts de puissance prévus pour résister à l'apparition d'un arc électrique issu d'un fort courant à l'ouverture ou à la fermeture.Such an apparatus known as a "contactor" is known, which is an electrotechnical apparatus intended to establish or interrupt the passage of current through an electrical or pneumatic control device. Depending on its use, this contactor can be unipolar, bipolar, tripolar or tetra polar. In other words, this contactor has one to four power contacts designed to resist the appearance of an electric arc from a strong current on opening or closing.

Dans un tel contacteur, tous les contacts mobiles sont montés dans un même support de manière à pouvoir être déplacés tous en même temps lorsqu'un ordre de fermeture ou bien d'ouverture est donné au contacteur. Un tel contacteur est apte à être actionné soit manuellement, soit par l'intermédiaire d'une bobine apte à être traversée par un courant électrique et à coopérer avec une armature fixe solidaire des contacts fixes du contacteur et une armature mobile solidaire des contacts mobiles du contacteur. Ainsi, lorsque la bobine n'est parcourue par aucun courant électrique, l'armature fixe n'exerce aucune attraction magnétique sur l'armature mobile, le circuit magnétique est alors ouvert. Lorsque la bobine est parcourue par un courant suffisant, l'armature fixe attire l'armature mobile et se colle à celle-ci : le circuit magnétique est alors fermé. Les mouvements de l'armature mobile entraînent donc l'ouverture et la fermeture des contacts.In such a contactor, all the movable contacts are mounted in the same support so that they can all be moved at the same time when a closing or opening command is given to the contactor. Such a contactor is able to be actuated either manually or by means of a coil able to be traversed by an electric current and to cooperate with a fixed armature integral with the fixed contacts of the contactor and a movable armature secured to the movable contacts of the contactor. Thus, when the coil is not traversed by any electric current, the fixed armature exerts no magnetic attraction on the moving armature, the magnetic circuit is then open. When the coil is traversed by a sufficient current, the fixed armature attracts the mobile armature and sticks to it: the magnetic circuit is closed. The movements of the mobile armature thus cause the opening and closing of the contacts.

Lorsque cet appareil comporte une ligne de neutre, étant par exemple du type tétra polaire comportant trois lignes de phase et une ligne de neutre, la ligne de neutre est matérialisée de la même manière que la ligne de phase, c'est-à-dire qu'elle comporte deux contacts fixes reliés électriquement respectivement aux deux bornes, et un pont de contacts mobiles formant deux contacts mobiles aptes à coopérer respectivement avec les deux contacts fixes précités.When this apparatus comprises a neutral line, for example being of the tetra polar 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 it comprises two fixed contacts electrically connected respectively to the two terminals, and a movable contact bridge forming two movable contacts capable of cooperating respectively with the two aforementioned fixed contacts.

Tous ces contacts fixes et mobiles comportent chacun une pastille de contact, laquelle est susceptible de présenter des signes de vieillissement après un certain nombre de manoeuvres du contacteur. Ce phénomène de vieillissement des pastilles de contacts peut entraîner des ruptures de neutre susceptibles de générer des surtensions, lesquelles peuvent entraîner une destruction partielle ou totale des récepteurs.All these fixed and mobile contacts each have a contact pad, which is likely to show signs of aging after a number of operations of the contactor. This phenomenon of aging of the contact pellets can lead to neutral breaks liable to generate overvoltages, which can lead to a partial or total destruction of the receivers.

Afin de pallier à ce problème et de s'assurer que la liaison électrique entre les deux bornes amont et aval sur la ligne de neutre est bien réalisée, l'installateur a l'habitude de mettre en place par précaution un câblage extérieur filaire reliant électriquement les deux bornes, ce qui représente une contrainte pour l'installateur.In order to overcome this problem and to make sure that the electrical connection between the two upstream and downstream terminals on the neutral line is well achieved, the installer usually sets up by cautious wired external wiring electrically connecting both terminals, which is a constraint for the installer.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention résout ces problèmes et propose un appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique, tel un contacteur, permettant de supprimer les risques de rupture de neutre sans contraintes supplémentaires pour l'installateur.The present invention solves these problems and proposes an electrical apparatus for establishing or interrupting the current in an electrical circuit, such as a contactor, to eliminate the risk of neutral breakage without additional constraints for the installer.

A cet effet, la présente invention a pour objet un appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique du genre précédemment mentionné, cet appareil étant caractérisé en ce que la liaison électrique entre les deux bornes situées sur la ligne de neutre est une liaison permanente.For this purpose, the subject of the present invention is an electrical apparatus intended to establish or interrupt the current in an electrical circuit of the kind mentioned above, this apparatus being characterized in that the electrical connection between the two terminals situated on the neutral line is a permanent link.

Selon une caractéristique particulière, la liaison électrique précitée est réalisée par un conducteur rigide d'une seule pièce comportant à ses deux extrémités opposées respectivement deux parties d'extrémité formant respectivement les deux plages de raccordement respectivement des deux bornes.According to a particular characteristic, the aforementioned electrical connection is made by a rigid conductor in one piece having at its two opposite ends respectively two end portions respectively forming the two connection pads respectively of the two terminals.

Selon une autre caractéristique, le conducteur précité présente une forme en U comportant une partie centrale rectiligne présentant à chacune de ses deux extrémités opposées deux plis à angle droit successifs, ledit conducteur de neutre présentant une forme générale correspondant à celle de l'ensemble des conducteurs situés entre une borne amont et une borne aval, sur chacune des lignes de phase.According to another feature, the aforementioned conductor has a U-shape having a rectilinear central portion having at each of its two opposite ends two successive right-angle pleats, said neutral conductor having a general shape corresponding to that of the set of conductors located between an upstream terminal and a downstream terminal, on each of the phase lines.

Selon une autre caractéristique, tous les ponts de contacts mobiles de l'appareil sont montés dans un même support apte à être déplacé par des moyens de commande entre les deux positions précitées, chaque pont de contacts mobiles traversant une ouverture du support, de manière à pouvoir être entraîné par celui-ci, vers les deux positions respectivement fermée et ouverte, le conducteur de neutre traversant le support à travers un évidement agencé par rapport au conducteur de telle manière que le conducteur n'empêche pas le déplacement du support, la portion traversante du conducteur de neutre étant dans le même plan que les ponts de contacts mobiles lorsque ceux-ci sont en position fermée.According to another characteristic, all the mobile contact bridges of the apparatus are mounted in the same support able to be moved by control means between the two aforementioned positions, each bridge of movable contacts passing through an opening of the support, so as to being able to be driven by it, to the two positions respectively closed and open, the neutral conductor passing through the support through a recess arranged relative to the conductor in such a way that the driver does not prevent the displacement of the support, the portion traversante the neutral conductor being in the same plane as the movable contact bridges when they are in the closed position.

Selon une autre caractéristique, l'ouverture précitée permet l'insertion de ce pont de contacts mobiles parallèlement à l'axe du pont de contacts mobiles, et l'évidement précité est apte à permettre l'insertion du conducteur dans le support perpendiculairement à la direction longitudinale de ce conducteur.According to another feature, the aforementioned opening allows the insertion of this mobile contact bridge parallel to the axis of the mobile contact bridge, and the aforementioned recess is adapted to allow insertion of the conductor into the support perpendicular to the longitudinal direction of this conductor.

Selon une autre caractéristique, le conducteur de neutre précité est maintenu et positionné dans au moins une glissière prévue dans la face intérieure d'une paroi appartenant au boîtier de l'appareil.According to another feature, the aforementioned neutral conductor is held and positioned in at least one slide provided in the inner face of a wall belonging to the housing of the apparatus.

Selon une autre caractéristique, cet appareil est du type tétra polaire comportant trois lignes électriques de phase et une ligne électrique de neutre.According to another characteristic, this apparatus is of the tetra-polar type comprising three phase electrical lines and a neutral electrical line.

Selon une caractéristique particulière, cet appareil est un contacteur.According to a particular characteristic, this apparatus is a contactor.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans les quels :

  • La figure 1 est une vue en perspective d'un contacteur selon l'invention,
  • La figure 2 est une vue en perspective illustrant une partie du contacteur comportant les bornes et les liaisons électriques reliant les bornes amont aux bornes aval,
  • La figure 3 est une vue en coupe du contacteur dans un plan parallèle au plan de fixation de l'appareil, et
  • La figure 4 est une vue en perspective illustrant une partie de l'appareil comportant le support de contacts mobiles, les contacts fixes et mobiles, ainsi que le conducteur de neutre selon l'invention,
  • La figure 5 est une vue en perspective illustrant un support de contacts mobiles selon l'art antérieur,
  • La figure 6 est une vue en perspective du support de contacts mobiles, après adaptation selon l'invention,
  • La figure 7 est une vue partielle en perspective, illustrant plus particulièrement la partie du boîtier de l'appareil comportant des glissières, et
  • La figure 8 est une vue de détail de la figure précédente.
But other advantages and features of the invention will appear better in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is a perspective view of a contactor according to the invention,
  • The figure 2 is a perspective view illustrating a part of the contactor comprising the terminals and the electrical connections connecting the upstream terminals to the downstream terminals,
  • The figure 3 is a sectional view of the contactor in a plane parallel to the plane of attachment of the apparatus, and
  • The figure 4 is a perspective view illustrating a part of the apparatus comprising the support of moving contacts, the fixed and moving contacts, and the neutral conductor according to the invention,
  • The figure 5 is a perspective view illustrating a movable contact support according to the prior art,
  • The figure 6 is a perspective view of the mobile contact support, after adaptation according to the invention,
  • The figure 7 is a partial perspective view, illustrating more particularly the part of the housing of the apparatus comprising slides, and
  • The figure 8 is a detail view of the previous figure.

Sur la figure 1, est illustré un contacteur électrique C selon l'invention. De manière connue en soi, ce contacteur C est logé dans un boîtier B de forme sensiblement parallélépipédique comportant une face arrière 1 de fixation à un rail de montage, une face avant 2 formant nez, deux faces latérales 3,4 par lesquelles le contacteur peut être accolé à d'autres appareils du même type sur le rail, et deux faces respectivement supérieure 5 et inférieure 6 comportant respectivement un ensemble de bornes aval A et un ensemble de bornes amont T.
Selon cette réalisation particulière illustrée, cet appareil est du type tétra polaire et loge quatre lignes électriques 7,8,9,10 respectivement une ligne de neutre 7 et trois lignes de phase 8,9,10. A chacune de ces lignes électriques est associée une borne amont 11,12,13,14 et une borne aval 15,16,17,18, destinées à être reliées électriquement, pour ce qui concerne les bornes amont, à des moyens d'alimentation, et pour ce qui concerne les bornes aval, à des appareils de départ, par l'intermédiaire de câbles ou d'un peigne. Chaque ligne électrique de phase 8,9,10 comporte deux contacts fixes 19,20 ; 21,22 ; 23,24 reliés électriquement respectivement à une borne aval et à une borne amont, et un pont de deux contacts mobiles 25,26,27 formant à ses deux extrémités opposées deux contacts mobiles a,b destinés respectivement à coopérer avec les deux contacts fixes 19,20 à 24. Tous les contacts comportent au niveau des zones de contact, des pastilles de contact 28. Tous les contacts fixes sont reliés électriquement et mécaniquement par leur extrémité située à l'opposé des contacts mobiles, à la plage de raccordement 12a,13a,14a,16a,17a,18a de la borne correspondante 12,13,14,16,17,18.
Conformément à l'invention, la liaison électrique entre la borne amont 11 et la borne aval 15 sur la ligne de neutre 7 est permanente, et n'est donc pas équipée, comme ceci est le cas pour les autres lignes de phase, d'un contact mobile et de deux contacts fixes.
Selon la réalisation de l'invention illustrée, cette liaison électrique est constituée par un conducteur rigide 29 de forme aplatie constitué d'une seule pièce. Ce conducteur comporte une partie rectiligne 29a présentant à ses deux extrémités opposées deux plis à angle droit 29b, 29c et forme, à ses deux extrémités opposées, deux parties ou plages de raccordement 11a,15a destinées à être introduites respectivement dans les deux bornes correspondantes 11,15.
La forme de ce conducteur de neutre 29 correspond globalement à celle de chaque ensemble associé à une ligne de courant de phase, et comportant les deux contacts fixes, le pont mobile, et les deux plages de raccordement. La partie rectiligne 29a du conducteur de neutre 29 est située dans le même plan que chaque ensemble comportant deux contacts fixes et un contact mobile associé à une ligne de phase.On the figure 1 , is illustrated an electric switch C according to the invention. In a manner known per se, this contactor C is housed in a substantially parallelepiped-shaped housing B having a rear face 1 for attachment to a mounting rail, a front face 2 forming a nose, and two lateral faces 3,4 through which the contactor can to be attached to other devices of the same type on the rail, and two respectively upper 5 and lower 6 faces respectively comprising a set of downstream terminals A and a set of upstream terminals T.
According to this particular embodiment illustrated, this apparatus is of the tetra-polar type and houses four electrical lines 7, 8, 9, 10, respectively one neutral line 7 and three phase lines 8, 9, 10. To each of these power lines is associated 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 starting devices, via cables or a comb. Each 8,9,10 phase electrical line comprises 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 contact areas, contact pads 28. All the fixed contacts are electrically connected and mechanically by their end located opposite the movable contacts, to the connection pad 12a, 13a, 14a, 16a, 17a, 18a of the corresponding terminal 12,13,14,16,17,18.
According to the invention, 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, a movable contact and two fixed contacts.
According to the embodiment of the illustrated invention, this electrical connection is constituted by a rigid conductor 29 of flattened form consisting of a single piece. This conductor comprises a rectilinear portion 29a having at its two opposite ends two right-angled folds 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.
The shape of this neutral conductor 29 corresponds globally to that of each set associated with a phase current line, and comprising the two fixed contacts, the moving bridge, and the two connection pads. The rectilinear portion 29a of the neutral conductor 29 is located in the same plane as each set comprising two fixed contacts and a moving contact associated with a phase line.

Tel qu'illustré sur les figures 4 à 6, tous les ponts de contacts mobiles 25,26,27 de l'appareil sont montés dans un même support 30 apte à être déplacé par des moyens de commande du type manuel ou électromagnétique, entre les deux positions précitées. Chaque pont de contact mobile traverse une ouverture 30a du support, de manière à pouvoir être entraîné par celui-ci, vers les deux positions respectivement fermée et ouverte, le conducteur de neutre 29 quant à lui traversant le support 30 à travers un évidement 30b agencé par rapport au conducteur de telle manière que ce conducteur de neutre n'empêche pas le déplacement du support 30, le conducteur de neutre étant dans le même plan que les ponts de contacts mobiles lorsque ceux-ci sont en position fermée. Cette ouverture 30a permet l'insertion de ce pont parallèlement à l'axe du pont, tandis que l'évidement précité 30b est apte à permettre l'insertion du conducteur de neutre dans le support 30 perpendiculairement à la direction longitudinale de ce conducteur.
Ainsi, il est possible d'utiliser un support tel que celui utilisé habituellement dans les contacteurs de l'art antérieur, en retirant une partie d'extrémité 30c de celui-ci de manière à permettre l'insertion du conducteur de neutre dans ce support perpendiculairement à sa direction longitudinale.
Le montage du conducteur de neutre s'effectue de la manière qui suit.
On place tout d'abord le conducteur de neutre 29 dans deux glissières 31,32 du boîtier B de l'appareil illustrées sur les figures 7 et 8, puis les deux bornes de neutre 11,15 sont montées respectivement aux deux extrémités du conducteur.
Puis, le support 30 équipé des ponts de contacts mobiles 25,26,27 est placé dans le boîtier de l'appareil jusqu'à ce qu'il soit situé juste au-dessus du conducteur de neutre 29, après modification éventuelle du support 30, tel que précédemment indiqué, dans le cas où un support de l'art antérieur est utilisé. Puis, les contacts fixes 19 à 24 sont introduits dans le boîtier B ainsi que les bornes correspondantes 11 à 18.As illustrated on Figures 4 to 6 , all the movable contact bridges 25,26,27 of the apparatus 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 driven by it, to the two respectively closed and open positions, 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 displacement of the support 30, the neutral conductor being in the same plane as the mobile contact bridges when they 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 adapted to allow the insertion of the neutral conductor in the support 30 perpendicular to the longitudinal direction of this conductor.
Thus, it is possible to use a support such as that usually used in the prior art contactors, by removing an end portion 30c thereof so as to allow insertion of the neutral conductor in this support perpendicular to its longitudinal direction.
The neutral conductor is installed as follows.
First of all, the neutral conductor 29 is placed in two slideways 31, 32 of the housing B of the apparatus illustrated in FIGS. Figures 7 and 8 then the two neutral terminals 11, 15 are respectively mounted at both ends of the conductor.
Then, the support 30 equipped with the movable contact bridges 25,26,27 is placed in the housing of the apparatus 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 and the corresponding terminals 11 to 18.

On a réalisé grâce à l'invention un appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique, tel un contacteur, cet appareil permettant de supprimer les problèmes des ruptures de neutre apparaissant après le vieillissement des pastilles de contact, sans câblage extérieur filaire, en utilisant un shunt intégré dans l'appareil sur la ligne de neutre. Cette solution est facilement intégrable dans les contacteurs existants avec un minimum de modifications à réaliser.An electrical apparatus for establishing or interrupting the current in an electrical circuit, such as a contactor, has been realized thanks to the invention, this apparatus making it possible to eliminate the problems of neutral breaks occurring after aging of the contact pads, without external wiring. wired, using a shunt built into the device on the neutral line. This solution is easily integrated in existing contactors with a minimum of modifications to achieve.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple.Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example.

Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant son esprit.On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.

Claims (8)

Appareil électrique destiné à établir ou interrompre le courant dans un circuit électrique, ledit appareil comportant au moins deux paires de contacts fixes, chaque paire comportant deux contacts fixes reliés électriquement respectivement à une borne amont et à une borne aval de l'appareil, et associée à cette paire de contacts fixes, un pont de deux contacts mobiles apte à être déplacé entre une première position dans laquelle il relie électriquement ces deux contacts fixes, et une seconde position dans laquelle la circulation du courant entre ces deux contacts fixes est interrompue, l'une des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne véhiculant une phase, l'autre ou une autre des paires de contacts fixes et son pont de contacts mobiles associé étant sur une ligne véhiculant le neutre, caractérisé en ce que la liaison électrique entre les deux bornes (11,15) situées sur la ligne de neutre (7) est une liaison permanente.Electrical apparatus for establishing or interrupting the current in an electrical circuit, said apparatus comprising at least two pairs of fixed contacts, each pair having two fixed contacts electrically connected respectively to an upstream terminal and a downstream terminal of the apparatus, and associated to 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 fixed contacts is interrupted, one of the pairs of fixed contacts and its associated moving contact bridge being on a line carrying one phase, the other or another of the pairs of fixed contacts and its associated mobile contact bridge being on a line conveying the neutral, characterized in that the electrical connection between the two terminals (11,15) located on the neutral line (7) is a Service Permanent bond nte. Appareil électrique selon la revendication 1, caractérisé en ce que la liaison électrique précitée est réalisée par un conducteur rigide (29) d'une seule pièce comportant à ses deux extrémités opposées respectivement deux parties d'extrémité formant respectivement deux plages de raccordement (11a, 15a) appartenant respectivement aux deux bornes (11, 15).Electrical apparatus according to claim 1, characterized in that the aforementioned electrical connection is made by a rigid conductor (29) in one piece having at its two opposite ends respectively two end portions respectively forming two connection pads (11a, 15a) respectively belonging to the two terminals (11, 15). Appareil électrique selon la revendication 2, caractérisé en ce que le conducteur précité (29) présente une forme en U comportant une partie centrale rectiligne (29a) présentant à chacune de ses deux extrémités opposées, deux plis à angle droit successifs (29b,29c), ledit conducteur dit conducteur de neutre (29) présentant une forme générale correspondant à celle de l'ensemble des conducteurs situés entre une borne amont (12,13,14) et une borne aval (16,17,18), sur chacune des lignes véhiculant une phase (8,9,10).Electrical apparatus according to claim 2, characterized in that the aforesaid conductor (29) has a U-shape having a rectilinear central portion (29a) having at each of its two opposite ends, two successive right-angle folds (29b, 29c) said neutral conductor conductor (29) having a general shape corresponding to that of all the conductors located between an upstream terminal (12,13,14) and a downstream terminal (16,17,18) on each line carrying a phase (8,9,10). Appareil électrique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que tous les ponts de contacts mobiles (25,26,27) de l'appareil sont montés dans un même support (30) apte à être déplacé par des moyens de commande entre les deux positions précitées, chaque pont de contacts mobiles (25,26,27) traversant une ouverture (30a) du support (30), de manière à pouvoir être entraîné par celui-ci, vers les deux positions respectivement fermée et ouverte, ledit conducteur (29) traversant le support (30) à travers un évidement (30b) agencé par rapport au conducteur (29) de telle manière que le conducteur (29) n'empêche pas le déplacement du support (30), la partie traversante du conducteur (29) étant dans le même plan que les ponts de contacts mobiles (25,26,27) lorsque ceux-ci sont en position fermée.Electrical device according to any one of claims 1 to 3, characterized in that all the movable contact bridges (25,26,27) of the apparatus are mounted in the same support (30) able to be moved by means control between the two aforementioned positions, each bridge movable contacts (25,26,27) through an opening (30a) of the support (30), so as to be driven by it, to the two positions respectively closed and open, said conductor (29) passing through the support (30) through a recess (30b) arranged with respect to the conductor (29) so that the conductor (29) does not prevent the displacement of the support (30), the through portion of the conductor (29) being in the same plane as the movable contact bridges (25,26,27) when they are in the closed position. Appareil électrique selon la revendication 4, caractérisé en ce que l'ouverture précitée (30a) permet l'insertion de ce pont de contacts mobiles parallèlement à l'axe du pont, et l'évidement précité (30b) est apte à permettre l'insertion du conducteur (29) dans le support (30) perpendiculairement à la direction longitudinale de ce conducteur (29).Electrical apparatus according to claim 4, characterized in that the aforementioned opening (30a) allows the insertion of this movable contact bridge parallel to the axis of the bridge, and the aforementioned recess (30b) is adapted to allow the insertion of the conductor (29) into the support (30) perpendicular to the longitudinal direction of this conductor (29). Appareil électrique selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le conducteur de neutre précité (29) est maintenu et positionné dans au moins une glissière (31,32) prévue dans la face intérieure d'une paroi appartenant au boîtier B de l'appareil.Electrical apparatus according to any one of claims 2 to 5, characterized in that the aforementioned neutral conductor (29) is held and positioned in at least one slide (31, 32) provided in the inner face of a wall belonging to the box B of the device. Appareil électrique selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est du type tétra polaire comportant trois lignes électriques de phase (8,9,10) et une ligne électrique de neutre (7).Electrical apparatus according to any one of the preceding claims, characterized in that it is of the tetra polar type comprising three electrical phase lines (8, 9, 10) and an electric neutral line (7). Appareil électrique selon l'une quelconque des revendications 1 à 7, caractérisé en ce que c'est un contacteur C.Electrical apparatus according to one of Claims 1 to 7, characterized in that it is a contactor C.
EP18204714.2A 2017-12-14 2018-11-06 Electrical device intended to establish or break the current in an electrical circuit Active EP3499540B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1762101A FR3075458B1 (en) 2017-12-14 2017-12-14 ELECTRICAL DEVICE INTENDED TO ESTABLISH OR INTERRUPT THE CURRENT IN AN ELECTRIC CIRCUIT

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EP3499540A1 true EP3499540A1 (en) 2019-06-19
EP3499540B1 EP3499540B1 (en) 2023-05-03

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FR (1) FR3075458B1 (en)

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Also Published As

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FR3075458B1 (en) 2020-09-11
FR3075458A1 (en) 2019-06-21
EP3499540B1 (en) 2023-05-03
CN109961986B (en) 2023-03-21
CN109961986A (en) 2019-07-02

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