EP1026793B1 - Connection assembly for a circuit breaker - Google Patents

Connection assembly for a circuit breaker Download PDF

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Publication number
EP1026793B1
EP1026793B1 EP20000410002 EP00410002A EP1026793B1 EP 1026793 B1 EP1026793 B1 EP 1026793B1 EP 20000410002 EP20000410002 EP 20000410002 EP 00410002 A EP00410002 A EP 00410002A EP 1026793 B1 EP1026793 B1 EP 1026793B1
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EP
European Patent Office
Prior art keywords
connector
error prevention
plug
socket
connectors
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EP20000410002
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German (de)
French (fr)
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EP1026793A1 (en
Inventor
Henri Bellotto
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R29/00—Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H01R13/642—Means for preventing incorrect coupling by position or shape of contact members

Definitions

  • the invention relates to a multipole circuit breaker for protecting a multiphase electrical network with a neutral, provided with an electronic release and at least one measuring aid associated with each pole and electrically connected to the release.
  • the invention more particularly relates to a connection assembly, connecting said measurement auxiliaries to the trigger.
  • the line associated with the neutral may be arranged to the right or left of the lines associated with the phases.
  • the pole associated with the neutral can also be disposed to the left or right of the poles of the circuit breaker associated with the phases.
  • the trigger comprises inputs associated respectively to each of the phases and specific inputs dedicated to the neutral, for the connection of the trigger with auxiliary measurement of the electrical parameters - voltage and current intensity - of the various poles.
  • the electrical connection between the measuring auxiliaries, which are usually located inside the circuit breaker box, and the associated inputs of the trip unit must take these variants into account.
  • connection assembly comprising a fixed socket provided with two neutral terminals, disposed on either side of a number p of phase terminals, and a mobile socket having a number p + 1 of terminals.
  • a connection assembly comprising a fixed socket provided with two neutral terminals, disposed on either side of a number p of phase terminals, and a mobile socket having a number p + 1 of terminals.
  • simply plug the mobile socket on the left or right side of the fixed socket simply plug the mobile socket on the left or right side of the fixed socket.
  • such a provision implies the existence of two neutral terminals, resulting in a bulk and a non-optimized price.
  • the invention aims to reduce the cost and bulk of a connection of this type.
  • connection assembly for a multipole circuit breaker protection of a polyphase electrical network with neutral having a number p + 1 poles, an electronic trigger, and at least one measuring aid associated with each pole and electrically connected to the release
  • the connection assembly comprising a fixed electrical outlet having a number p of phase connectors and a neutral connector, for being respectively connected to the phase and neutral inputs of the trigger
  • the assembly comprising in addition, a movable electrical plug, pluggable into the fixed socket, comprising a number p + 1 of connectors each intended to be connected to one of the electrical measurement auxiliaries, the movable plug having a configuration such that it can be plugged into the fixed socket in a first angular position, and in a second angular position obtained by rotation of an angle 2 ⁇ k ⁇ / p + 1 relative to the first, where k is a predefined integer less than or equal to p.
  • the differentiation between circuit breakers having the neutral pole right or left can be done very late, at the distributor rather than the production center.
  • the sockets used have the same number of connectors as the standard sockets. It follows that they are optimized both from the point of view of the size and the point of view of the cost.
  • the invention takes all its interest when the number p is greater than or equal to 3. In practice, the number p is equal to 3.
  • the number k is equal to 1.
  • other configurations are possible and may allow a better differentiation between the two useful positions, especially when the number p is large.
  • the assembly is provided with coding means prohibiting the plugging of the mobile plug into the fixed socket in a position other than the first and second angular positions. This avoids positioning errors.
  • each connector requires only one terminal.
  • the measuring aid is then reduced to a simple electrical connection bypass between the line and the corresponding connector of the mobile socket.
  • each connector advantageously comprises two terminals.
  • the auxiliaries can then be, conventionally, current transformers arranged in the circuit breaker housing.
  • the invention also relates to a multipole circuit breaker for protecting a polyphase electrical network with a neutral, comprising a number p + 1 of poles, an electronic trip device, at least one measurement aid associated with each pole, and at least one set connection as previously described, connecting said measurement auxiliaries to the trigger.
  • a three-phase electrical network (L 1 , L 2 , L 3 , L 4 ) with a neutral is protected by a circuit breaker 1.
  • the circuit breaker conventionally comprises a number p of poles associated with the p phases of the network and a pole associated with the neutral, c in the case of a three-phase network with neutral, four poles constituting a set of contacts 2 controlled by an electronic release 4, via a control relay 6.
  • the circuit breaker comprises current transformers A 1 , A 2 , A 3 and A 4 , for providing the trigger 4 a current measurement respectively in the lines L 1 , L 2 , L 3 and L 4 of the network. It further comprises electrical branching connections B 1 , B 2 , B 3 , B 4 for transmitting to the trigger the voltages of lines L 1 , L 2 , L 3 and L 4 .
  • the pole associated with the neutral may be disposed to the left or right of the poles of the circuit breaker associated with the phases.
  • the line L 1 corresponds to the neutral and the lines L 2 to L 4 to the phases X, Y and Z.
  • the neutral is on the line L 4 and the phases X, Y and Z on lines L 1 to L 3 .
  • the trip unit comprises phase inputs E X , E Y , E Z and neutral E N respectively associated with each of the phases and with the neutral for measuring currents. Likewise, it comprises phase inputs V X , V Y , V Z and neutral V N associated with each of the phases and with the neutral for the measurement of the voltages.
  • the connection between the current transformers A 1 to A 4 , arranged in the corresponding poles of the circuit breaker on the one hand, and the associated inputs of the trigger, on the other hand, must take these variants into account. Similarly, the connection between the voltage branches B 1 to B 4 and the trigger must be adapted.
  • the invention relates alternately or cumulatively to a connection assembly between the current transformers A 1 to A 4 and the trip device and the voltage connection assembly between the branches B 1 , B 2 , B 3 , B 4 and the trip unit.
  • the voltage connection assembly comprises a mobile plug C and a fixed plug D.
  • the movable receptacle comprises four single-pin connectors C 1 , C 2 , C 3 and C 4 corresponding respectively to the lines L 1 , L 2 , L 3 and L 4 , each arranged in an angular sector of 90 ° defined by relative to a pivot axis 8 of the socket.
  • the fixed plug D comprises in turn four pin connectors D X , D Y , D Z connected to the phase inputs V X , V Y , and V Z , and a neutral connector D N connected to the neutral input V N.
  • the two connectors D X and D Z have a foolproof outline 12, 11 while the other two connectors have a square outline 9, 10.
  • the connectors C 1 and C 2 of the mobile socket have a contour of additional coding 16, 13 of that of the connector D X.
  • the connector C 3 and the connector C 4 of the mobile socket comprise a complementary contour 14, 15 of that of the connector D Z.
  • the keying shapes present on the connectors D Z and D X can only cooperate with their respective complementary coding shape, so that it is not possible to plug the connectors C 3 or C 4 into the connector D X and it is not possible to plug the connectors C 1 or C 2 into the connector D Z.
  • the lines L 1 to L 4 are wired on the connectors C 1 to C 4 of the mobile socket. If the line L 1 is the neutral, then the mobile socket is plugged into the fixed socket in the position corresponding to the plugging of the connector C 1 of the mobile socket in the connector D N of the fixed socket. If on the other hand the neutral is on the line L 4 , then the movable plug is plugged into its other possible angular position, corresponding to the plugging of the connector C 4 in the neutral connector D N.
  • connection assembly according to the same principle is described for the connection of the current transformers A 1 , A 2 , A 3 and A 4 to the trip unit 4.
  • This embodiment differs mainly from the previous one on the one hand by the number of terminals each connector, and secondly by the keying device. To make the connection of each current transformer, two terminals are indeed necessary. As a result, each connector D ' X , D' Y , D ' Z , D' N of the fixed socket of the figure 7 has two terminals 16. Similarly, each connector C ' 1 , C' 2 , C ' 3 , C' 4 of the mobile socket of the figure 6 has two terminals 18.
  • the keying of the plug is made not at the connectors, but on the external side edges of the mobile and fixed jacks.
  • the fixed plug D ' has a protruding flange, which comprises a keying flange 20.
  • the movable plug comprises two complementary keying angles 22, 24 allowing plugging in two positions and only two, relative to the fixed socket.
  • the keying may comprise both forms of keying on the connectors and on the outer periphery of the socket.
  • the invention is also applicable in multiphase networks having more than four lines (p> 3).
  • the two connectors C 1 and C 4 corresponding to lines L 1 and L 4 may be dedicated to neutral, are not necessarily adjacent. It is indeed perfectly possible to distribute them in opposition on either side of the axis 8 so that one goes from the first to the second authorized connection position by pivoting 180 °. It is also possible to use the voltage circuit connection assembly described above with the connection set of the current measuring circuit described in the document. FR-A-2,739,973 .

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Description

L'invention concerne un disjoncteur multipolaire de protection d'un réseau électrique multiphasé avec neutre, pourvu d'un déclencheur électronique et d'au moins un auxiliaire de mesure associé à chaque pôle et relié électriquement au déclencheur. L'invention concerne plus particulièrement un ensemble de connexion, reliant lesdits auxiliaires de mesures au déclencheur.The invention relates to a multipole circuit breaker for protecting a multiphase electrical network with a neutral, provided with an electronic release and at least one measuring aid associated with each pole and electrically connected to the release. The invention more particularly relates to a connection assembly, connecting said measurement auxiliaries to the trigger.

Selon la disposition locale du réseau, la ligne associée au neutre peut être disposée a droite ou à gauche des lignes associées aux phases. Pour cette raison, le pôle associé au neutre peut également être disposé à gauche ou à droite des pôles du disjoncteur associés aux phases. Or le déclencheur comporte quant à lui des entrées associées respectivement à chacune des phases et des entrées spécifiques dédiées au neutre, destinées à la liaison du déclencheur avec des auxiliaires de mesures des paramètres électriques - tension et intensité du courant - des différents pôles. La liaison électrique entre les auxiliaires de mesure, qui se trouvent généralement à l'intérieur du boîtier du disjoncteur, et les entrées associées du déclencheur, doit tenir compte de ces variantes.Depending on the local arrangement of the network, the line associated with the neutral may be arranged to the right or left of the lines associated with the phases. For this reason, the pole associated with the neutral can also be disposed to the left or right of the poles of the circuit breaker associated with the phases. However, the trigger comprises inputs associated respectively to each of the phases and specific inputs dedicated to the neutral, for the connection of the trigger with auxiliary measurement of the electrical parameters - voltage and current intensity - of the various poles. The electrical connection between the measuring auxiliaries, which are usually located inside the circuit breaker box, and the associated inputs of the trip unit must take these variants into account.

On a déjà proposé dans le document FR-A-2 739 973 , un ensemble de connexion comportant une prise fixe pourvue de deux bornes de neutre, disposées de part et d'autre d'un nombre p de bornes de phase, et une prise mobile comportant un nombre p + 1 de bornes. Suivant le type de réseau, il suffit d'enficher la prise mobile sur la partie gauche ou la partie droite de la prise fixe. Toutefois, une telle disposition implique l'existence de deux bornes de neutre, d'où un encombrement et un prix non optimisés.It has already been proposed in the document FR-A-2,739,973 , a connection assembly comprising a fixed socket provided with two neutral terminals, disposed on either side of a number p of phase terminals, and a mobile socket having a number p + 1 of terminals. Depending on the type of network, simply plug the mobile socket on the left or right side of the fixed socket. However, such a provision implies the existence of two neutral terminals, resulting in a bulk and a non-optimized price.

L'invention a pour but de réduire le coût et l'encombrement d'une connexion de ce type.The invention aims to reduce the cost and bulk of a connection of this type.

C'est objectif est atteint grâce à un ensemble de connexion pour un disjoncteur multipolaire de protection d'un réseau électrique polyphasé avec neutre comportant un nombre p+1 de pôles, un déclencheur électronique, et au moins un auxiliaire de mesure associé à chaque pôle et relié électriquement au déclencheur, l'ensemble de connexion comportant une prise électrique fixe comportant un nombre p de connecteurs de phase et un connecteur de neutre, destinés à être connectés respectivement à des entrées de phase et de neutre du déclencheur, l'ensemble comportant par ailleurs une prise électrique mobile, enfichable dans la prise fixe, comportant un nombre p+1 de connecteurs destinés à être connectés chacun à un des auxiliaires de mesure électrique, la prise mobile ayant une configuration telle qu'elle peut être enfichée dans la prise fixe dans une première position angulaire, et dans une deuxième position angulaire obtenue par rotation d'un angle 2 ⁢ kπ / p + 1

Figure imgb0001
par rapport à la première, où k est un nombre entier prédéfini inférieur ou égal à p.It is objective is achieved through a connection assembly for a multipole circuit breaker protection of a polyphase electrical network with neutral having a number p + 1 poles, an electronic trigger, and at least one measuring aid associated with each pole and electrically connected to the release, the connection assembly comprising a fixed electrical outlet having a number p of phase connectors and a neutral connector, for being respectively connected to the phase and neutral inputs of the trigger, the assembly comprising in addition, a movable electrical plug, pluggable into the fixed socket, comprising a number p + 1 of connectors each intended to be connected to one of the electrical measurement auxiliaries, the movable plug having a configuration such that it can be plugged into the fixed socket in a first angular position, and in a second angular position obtained by rotation of an angle 2 ⁢ kπ / p + 1
Figure imgb0001
 relative to the first, where k is a predefined integer less than or equal to p.

Grâce à l'invention, la différenciation entre les disjoncteurs ayant le pôle neutre à droite ou à gauche peut se faire très tardivement, chez le distributeur plutôt qu'au centre de production. Les prises mises en oeuvre ont le même nombre de connecteurs que les prises standard. Il s'ensuit qu'elles sont optimisées tant du point de vue de l'encombrement que du point de vue du coût.Thanks to the invention, the differentiation between circuit breakers having the neutral pole right or left can be done very late, at the distributor rather than the production center. The sockets used have the same number of connectors as the standard sockets. It follows that they are optimized both from the point of view of the size and the point of view of the cost.

L'invention prend tout son intérêt lorsque le nombre p est supérieur ou égal à 3. En pratique, le nombre p est égal à 3.The invention takes all its interest when the number p is greater than or equal to 3. In practice, the number p is equal to 3.

Avantageusement, le nombre k est égal à 1. Toutefois, d'autres configurations sont possibles et peuvent permettre une meilleure différentiation entre les deux positions utiles, notamment lorsque le nombre p est grand.Advantageously, the number k is equal to 1. However, other configurations are possible and may allow a better differentiation between the two useful positions, especially when the number p is large.

Préférentiellement, l'ensemble est muni de moyens de détrompage interdisant l'enfichage de la prise mobile dans la prise fixe dans une position autre que la première et la deuxième positions angulaires. On évite ainsi des erreurs de positionnement.Preferably, the assembly is provided with coding means prohibiting the plugging of the mobile plug into the fixed socket in a position other than the first and second angular positions. This avoids positioning errors.

Selon un mode de réalisation particulier, ce détrompage peut être réalisé grâce aux dispositions suivantes:

  • l'un au moins des connecteurs de l'une des prises, dit connecteur de détrompage, dispose d'une forme de détrompage,
  • les connecteurs de l'autre prise comprennent
    • un premier connecteur de détrompage complémentaire qui, dans la première position angulaire, est destiné à s'enficher dans le connecteur de détrompage, et qui comporte une forme de détrompage complémentaire, telle qu'il est possible de l'enficher dans le connecteur de détrompage dans la première position angulaire
    • un deuxième connecteur de détrompage complémentaire qui, dans la deuxième position angulaire, est destiné à s'enficher dans la borne de détrompage, et qui comporte une forme de détrompage complémentaire, telle qu'il est possible de l'enficher dans ladite borne de détrompage dans la deuxième position angulaire,
    les p-1 autres connecteurs de l'autre prise étant munis d'une forme incompatible avec la forme de détrompage, telle qu'il n'est pas possible de les enficher dans le connecteur de détrompage.
According to a particular embodiment, this coding can be achieved thanks to the following provisions:
  • at least one of the connectors of one of the sockets, said coding connector, has a form of keying,
  • the connectors on the other jack include
    • a first complementary coding connector which, in the first angular position, is intended to be plugged into the coding connector, and which has a complementary coding shape, such that it is possible to plug it into the coding connector in the first angular position
    • a second complementary coding connector which, in the second angular position, is intended to be plugged into the coding terminal, and which has a complementary coding shape, such that it is possible to plug it into said coding terminal in the second angular position,
    the p-1 other connectors of the other socket being provided with a shape incompatible with the shape of keying, such that it is not possible to plug them into the keying connector.

Si les auxiliaires de mesure sont destinés aux mesures des tensions de pôles, chaque connecteur ne nécessite qu'une borne. L'auxiliaire de mesure est alors réduit à une simple liaison électrique de dérivation entre la ligne et le connecteur correspondant de la prise mobile.If the measuring instruments are for measuring pole voltages, each connector requires only one terminal. The measuring aid is then reduced to a simple electrical connection bypass between the line and the corresponding connector of the mobile socket.

Si par contre les auxiliaires de mesure sont destinés à des mesures de courant, chaque connecteur comporte avantageusement deux bornes. Les auxiliaires peuvent alors être, de manière classique, des transformateurs de courant disposés dans le boîtier du disjoncteur.If, on the other hand, the measuring auxiliaries are intended for current measurements, each connector advantageously comprises two terminals. The auxiliaries can then be, conventionally, current transformers arranged in the circuit breaker housing.

L'invention a également trait à un disjoncteur multipolaire de protection d'un réseau électrique polyphasé avec neutre, comportant un nombre p+1 de pôles, un déclencheur électronique, au moins un auxiliaire de mesure associé à chaque pôle, et au moins un ensemble de connexion tel que décrit précédemment, reliant lesdits auxiliaires de mesures au déclencheur.The invention also relates to a multipole circuit breaker for protecting a polyphase electrical network with a neutral, comprising a number p + 1 of poles, an electronic trip device, at least one measurement aid associated with each pole, and at least one set connection as previously described, connecting said measurement auxiliaries to the trigger.

D'autres avantages et caractéristiques ressortiront plus clairement de l'exposé qui va suivre de deux modes de réalisation particuliers de l'invention, donnés à titre d'exemples non limitatifs et représentés aux dessins annexés sur lesquels:

  • La figure 1 illustre un disjoncteur dans lequel les deux modes de réalisation de l'invention peuvent être utilisés, alternativement ou cumulativement,
  • la figure 2 représente en perspective un ensemble de connexion selon le premier mode de réalisation de l'invention,
  • la figure 3 illustre une vue de face d'une prise fixe de l'ensemble de connexion selon le premier mode de réalisation de l'invention
  • les figures 4 et 5 illustrent une vue de face d'une prise mobile de l'ensemble de connexion selon le premier mode de réalisation de l'invention, dans deux positions respectives par rapport à la partie fixe de la figure 3,
  • la figure 6 illustre une vue de face d'une prise mobile d'un ensemble de connexion selon un deuxième mode de réalisation de l'invention,
  • la figure 7 illustre une vue de face d'une prise fixe d'un ensemble de connexion selon le deuxième mode de réalisation de l'invention.
Other advantages and features will emerge more clearly from the following description of two particular embodiments of the invention given by way of non-limiting example and represented in the accompanying drawings in which:
  • The figure 1 illustrates a circuit breaker in which the two embodiments of the invention can be used, alternatively or cumulatively,
  • the figure 2 represents in perspective a connection assembly according to the first embodiment of the invention,
  • the figure 3 illustrates a front view of a fixed grip of the connection assembly according to the first embodiment of the invention
  • the Figures 4 and 5 illustrate a front view of a mobile socket of the connection assembly according to the first embodiment of the invention, in two respective positions relative to the fixed part of the figure 3 ,
  • the figure 6 illustrates a front view of a mobile socket of a connection assembly according to a second embodiment of the invention,
  • the figure 7 illustrates a front view of a fixed socket of a connection assembly according to the second embodiment of the invention.

Comme représenté à la figure 1, un réseau électrique triphasé (L1, L2, L3, L4) avec neutre est protégé par un disjoncteur 1. Le disjoncteur comporte classiquement un nombre p de pôles associés aux p phases du réseau et un pôle associé au neutre, c'est à dire dans le cas d'un réseau triphasé avec neutre, quatre pôles constituant un ensemble de contacts 2 commandés par un déclencheur électronique 4, par l'intermédiaire d'un relais de commande 6. Le disjoncteur comporte des transformateurs de courant A1, A2, A3 et A4, destinés à fournir au déclencheur 4 une mesure du courant respectivement dans les lignes L1, L2, L3 et L4 du réseau. Il comporte en outre des liaisons électriques de dérivation B1, B2, B3, B4 permettant de transmettre au déclencheur les tensions des lignes L1, L2, L3 et L4.As represented in figure 1 a three-phase electrical network (L 1 , L 2 , L 3 , L 4 ) with a neutral is protected by a circuit breaker 1. The circuit breaker conventionally comprises a number p of poles associated with the p phases of the network and a pole associated with the neutral, c in the case of a three-phase network with neutral, four poles constituting a set of contacts 2 controlled by an electronic release 4, via a control relay 6. The circuit breaker comprises current transformers A 1 , A 2 , A 3 and A 4 , for providing the trigger 4 a current measurement respectively in the lines L 1 , L 2 , L 3 and L 4 of the network. It further comprises electrical branching connections B 1 , B 2 , B 3 , B 4 for transmitting to the trigger the voltages of lines L 1 , L 2 , L 3 and L 4 .

Selon la disposition locale du réseau, le pôle associé au neutre peut être disposé à gauche ou à droite des pôles du disjoncteur associés aux phases. Dans le premier cas, la ligne L1 correspond au neutre et les lignes L2 à L4 aux phases X, Y et Z. Dans le deuxième cas, le neutre est sur la ligne L4 et les phases X, Y et Z sur les lignes L1 à L3.Depending on the local arrangement of the network, the pole associated with the neutral may be disposed to the left or right of the poles of the circuit breaker associated with the phases. In the first case, the line L 1 corresponds to the neutral and the lines L 2 to L 4 to the phases X, Y and Z. In the second case, the neutral is on the line L 4 and the phases X, Y and Z on lines L 1 to L 3 .

Le déclencheur comporte des entrées de phase EX, EY, EZ et de neutre EN associées respectivement à chacune des phases et au neutre pour la mesure des courants. De même, il comporte des entrées de phase VX, VY, VZ et de neutre VN associées à chacune des phases et au neutre pour la mesure des tension. La connexion entre les transformateurs de courant A1 à A4, disposés dans les pôles correspondants du disjoncteur d'une part, et les entrées associées du déclencheur d'autre part, doit tenir compte de ces variantes. De même la connexion entre les dérivations de tension B1 à B4 et le déclencheur doit être adaptée.The trip unit comprises phase inputs E X , E Y , E Z and neutral E N respectively associated with each of the phases and with the neutral for measuring currents. Likewise, it comprises phase inputs V X , V Y , V Z and neutral V N associated with each of the phases and with the neutral for the measurement of the voltages. The connection between the current transformers A 1 to A 4 , arranged in the corresponding poles of the circuit breaker on the one hand, and the associated inputs of the trigger, on the other hand, must take these variants into account. Similarly, the connection between the voltage branches B 1 to B 4 and the trigger must be adapted.

L'invention concerne alternativement ou cumulativement un ensemble de connexion entre les transformateurs de courant A1 à A4 et le déclencheur et l'ensemble de connexion de tension entre les dérivations B1, B2, B3, B4 et le déclencheur.The invention relates alternately or cumulatively to a connection assembly between the current transformers A 1 to A 4 and the trip device and the voltage connection assembly between the branches B 1 , B 2 , B 3 , B 4 and the trip unit.

L'ensemble de connexion de tension comporte une prise mobile C et une prise fixe D. En référence aux figures 2 à 5, la prise mobile comporte quatre connecteurs C1, C2, C3 et C4 à broche unique, correspondant respectivement aux lignes L1, L2, L3 et L4, et disposés chacun dans un secteur angulaire de 90° défini par rapport à un axe de pivotement 8 de la prise. La prise fixe D comporte quant à elle quatre connecteurs à une broche DX, DY, DZ reliés aux entrées de phase VX, VY, et VZ, et un connecteur de neutre DN relié à l'entrée de neutre VN. Les deux connecteurs DX et DZ disposent d'un contour de détrompage 12, 11 alors que les deux autres connecteurs ont un contour carré 9, 10. Les connecteurs C1 et C2 de la prise mobile disposent d'un contour de détrompage complémentaire 16, 13 de celui du connecteur DX. Le connecteur C3 et le connecteur C4 de la prise mobile comportent quant à eux un contour complémentaire 14, 15 de celui du connecteur DZ.The voltage connection assembly comprises a mobile plug C and a fixed plug D. With reference to the Figures 2 to 5 the movable receptacle comprises four single-pin connectors C 1 , C 2 , C 3 and C 4 corresponding respectively to the lines L 1 , L 2 , L 3 and L 4 , each arranged in an angular sector of 90 ° defined by relative to a pivot axis 8 of the socket. The fixed plug D comprises in turn four pin connectors D X , D Y , D Z connected to the phase inputs V X , V Y , and V Z , and a neutral connector D N connected to the neutral input V N. The two connectors D X and D Z have a foolproof outline 12, 11 while the other two connectors have a square outline 9, 10. The connectors C 1 and C 2 of the mobile socket have a contour of additional coding 16, 13 of that of the connector D X. The connector C 3 and the connector C 4 of the mobile socket comprise a complementary contour 14, 15 of that of the connector D Z.

Avec une telle disposition, il est possible d'enficher axialement la prise mobile C dans la prise fixe D suivant deux positions angulaires distinctes seulement, à savoir: une première position, représentée sur la figure 4, dans laquelle les connecteurs C1, C2, C3, C4 sont respectivement enfichés dans les connecteurs DX, DY, DZ, DN, et une deuxième position, représentée sur la figure 5, obtenue par pivotement d'un quart de tour de la prise mobile C autour de l'axe 8, dans laquelle les connecteurs C1, C2, C3, C4 sont respectivement enfichés dans les connecteurs DN, DX, DY, DZ. En effet, la forme carrée des connecteurs DY et DN est pour ainsi dire universelle, au sens où elle permet d'enficher tous les types de connecteurs de la prise mobile. La configuration adoptée permet en outre de conserver l'ordre des phasesWith such an arrangement, it is possible to plug axially the movable plug C into the fixed socket D in two distinct angular positions only, namely: a first position, represented on the figure 4 , in which the connectors C 1 , C 2 , C 3 , C 4 are respectively plugged into the connectors D X , D Y , D Z , D N , and a second position, shown in FIG. figure 5 , obtained by pivoting a quarter turn of the mobile socket C about the axis 8, in which the connectors C 1 , C 2 , C 3 , C 4 are respectively plugged into the connectors D N , D X , D Y , D Z. Indeed, the square shape of the connectors D Y and D N is almost universal, in the sense that it allows to plug all types of connectors of the mobile socket. The adopted configuration also makes it possible to keep the order of the phases

Par contre, il s'avère impossible d'enficher la prise mobile dans la prise fixe dans une position angulaire autre que les deux positions décrites précédemment. En effet, les formes de détrompage présentes sur les connecteurs DZ et DX peuvent uniquement coopérer avec leur forme de détrompage complémentaire respective, de sorte qu'il n'est pas possible d'enficher les connecteurs C3 ou C4 dans le connecteur DX et qu'il n'est pas possible d'enficher les connecteurs C1 ou C2 dans le connecteur DZ.By cons, it proves impossible to plug the mobile socket in the fixed socket in an angular position other than the two positions described above. Indeed, the keying shapes present on the connectors D Z and D X can only cooperate with their respective complementary coding shape, so that it is not possible to plug the connectors C 3 or C 4 into the connector D X and it is not possible to plug the connectors C 1 or C 2 into the connector D Z.

Les lignes L1 à L4 sont câblées sur les connecteurs C1 à C4 de la prise mobile. Si la ligne L1 est le neutre, alors la prise mobile est enfichée dans la prise fixe dans la position correspondant à l'enfichage du connecteur C1 de la prise mobile dans le connecteur DN de la prise fixe. Si par contre le neutre est sur la ligne L4, alors la prise mobile est enfichée dans son autre position angulaire possible, correspondant à l'enfichage du connecteur C4 dans le connecteur de neutre DN.The lines L 1 to L 4 are wired on the connectors C 1 to C 4 of the mobile socket. If the line L 1 is the neutral, then the mobile socket is plugged into the fixed socket in the position corresponding to the plugging of the connector C 1 of the mobile socket in the connector D N of the fixed socket. If on the other hand the neutral is on the line L 4 , then the movable plug is plugged into its other possible angular position, corresponding to the plugging of the connector C 4 in the neutral connector D N.

En référence aux figures 6 et 7, un ensemble de connexion suivant le même principe est décrit pour la connexion des transformateurs de courant A1, A2, A3 et A4 au déclencheur 4. Ce mode de réalisation diffère principalement du précédent d'une part par le nombre de bornes de chaque connecteur, et d'autre part par le dispositif de détrompage. Pour réaliser la connexion de chaque transformateur de courant, deux bornes sont en effet nécessaires. De ce fait, chaque connecteur D'X, D'Y, D'Z, D'N de la prise fixe de la figure 7 comporte deux bornes 16. De même, chaque connecteur C'1, C'2, C'3, C'4 de la prise mobile de la figure 6 comporte deux bornes 18. Par ailleurs, le détrompage de la prise est effectué non pas au niveau des connecteurs, mais sur les rebords latéraux extérieurs du boîtier des prises mobile et fixe. La prise fixe D' comporte une collerette faisant saillie, qui comporte un rebord de détrompage 20. La prise mobile comprend deux angles de détrompage complémentaires 22, 24 permettant un enfichage dans deux positions et deux seulement, par rapport à la prise fixe.With reference to Figures 6 and 7 a connection assembly according to the same principle is described for the connection of the current transformers A 1 , A 2 , A 3 and A 4 to the trip unit 4. This embodiment differs mainly from the previous one on the one hand by the number of terminals each connector, and secondly by the keying device. To make the connection of each current transformer, two terminals are indeed necessary. As a result, each connector D ' X , D' Y , D ' Z , D' N of the fixed socket of the figure 7 has two terminals 16. Similarly, each connector C ' 1 , C' 2 , C ' 3 , C' 4 of the mobile socket of the figure 6 has two terminals 18. Moreover, the keying of the plug is made not at the connectors, but on the external side edges of the mobile and fixed jacks. The fixed plug D 'has a protruding flange, which comprises a keying flange 20. The movable plug comprises two complementary keying angles 22, 24 allowing plugging in two positions and only two, relative to the fixed socket.

Naturellement, diverses variations sont possibles sans sortir du cadre de l'invention. Par exemple, le détrompage peut comporter à la fois des formes de détrompage sur les connecteurs et sur le pourtour extérieur de la prise. L'invention est également applicable dans des réseaux multiphasés comportant plus de quatre lignes (p>3). Par ailleurs, les deux connecteurs C1 et C4 correspondant aux lignes L1 et L4 susceptibles d'être dédiées au neutre, ne sont pas nécessairement adjacents. Il est en effet parfaitement possible de les distribuer en opposition de part et d'autre de l'axe 8 de façon à ce que l'on passe de la première à la deuxième position de branchement autorisé par pivotement de 180°. Il est également possible d'utiliser l'ensemble de connexion du circuit de tension décrit ci-dessus avec l'ensemble de connexion du circuit de mesure des courants décrit dans le document FR-A-2 739 973 .Naturally, various variations are possible without departing from the scope of the invention. For example, the keying may comprise both forms of keying on the connectors and on the outer periphery of the socket. The invention is also applicable in multiphase networks having more than four lines (p> 3). Moreover, the two connectors C 1 and C 4 corresponding to lines L 1 and L 4 may be dedicated to neutral, are not necessarily adjacent. It is indeed perfectly possible to distribute them in opposition on either side of the axis 8 so that one goes from the first to the second authorized connection position by pivoting 180 °. It is also possible to use the voltage circuit connection assembly described above with the connection set of the current measuring circuit described in the document. FR-A-2,739,973 .

Claims (8)

  1. A connection kit for a multipole circuit breaker (1) protecting a multiphase electric power system with neutral comprising a number p+1 of poles, an electronic trip unit (4), and at least one measuring auxiliary (A1, A2, A3, A4; B1, B2, B3, B4) associated with each pole and electrically connected to the trip unit, the connection kit comprising:
    - a fixed electric socket (D, D') comprising a number p of phase connectors (DX, DY, Dz; D'X, D'Y, D'Z) and a neutral connector (DN; D'N) designed to be respectively connected to phase inputs (VX, VY, VZ; EX, EY, EZ) and a neutral input (EN) of the trip unit and
    - a movable electric plug (C, C') plugging into the fixed socket, comprising a number p+1 of connectors (C1, C2, C3, C4; C'1, C'2, C'3, C'4) each designed to be connected to one of the electric measuring auxiliaries (B1, B2, B3, B4; A1, A2, A3, A4),
    a kit characterized in that the movable plug (C, C') has a configuration such that it can be plugged into the fixed socket (D, D') in a first angular position and in a second angular position obtained by rotation through an angle 2kπ/p+1 with respect to the first position, where k is a predefined integer smaller than or equal to p, error prevention means preventing the movable plug from being plugged into the fixed socket in a position other than the first and second angular positions.
  2. The kit according to claim 1, characterized in that the number p is greater than or equal to 3.
  3. The kit according to claim 2, characterized in that the number p is equal to 3.
  4. The kit according to claim 1, characterized in that the number k is equal to 1.
  5. The kit according to any one of the foregoing claims, characterized in that
    - at least one (DX, DZ) of the connectors of either the socket or plug, called error prevention connector, has an error prevention shape (12, 11),
    - the connectors of the other socket or plug comprise
    - a first complementary error prevention connector (C1 ; C3) which is designed to plug into the error prevention connector (DX; DZ) in the first angular position, and which comprises a complementary error prevention shape (16; 14) such that it can be plugged into the error prevention connector (DX; DZ) in the first angular position,
    - a second complementary error prevention connector (C2; C4) which is designed to plug into the error prevention connector (DX; DZ) in the second angular position, and which comprises a complementary error prevention shape (13; 15) such that it can be plugged into said error prevention connector (DX; DZ) in the second angular position,
    the p-1 other connectors (C3, C4; C1, C2) of the socket or plug being provided with a shape (14, 15; 16, 13) incompatible with the error prevention shape such that they cannot be plugged into the prevention connector (DX; DZ).
  6. The kit according to any one of the foregoing claims, characterized in that each connector (C1, C2, C3, C4; D1, D2, D3, D4) comprises a terminal, the measuring auxiliaries being electric current branch-off connections (B1, B2, B3, B4).
  7. The kit according to any one of claims 1 to 5, characterized in that each connector (C1, C2, C3, C4; D1, D2, D3, D4) comprises two terminals (18; 16), the measuring auxiliaries being current transformers (A1, A2, A3, A4).
  8. A multipole circuit breaker (1) protecting a multiphase electric power system with neutral comprising a number p+1 of poles, an electronic trip unit (2), at least one measuring auxiliary (A1, A2, A3, A4; B1, B2, B3, B4) associated with each pole, and at least one connection kit (C, D; C', D') according to any one of claims 1 to 7 connecting said measuring auxiliaries to the trip unit (2).
EP20000410002 1999-02-05 2000-01-17 Connection assembly for a circuit breaker Expired - Lifetime EP1026793B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901525 1999-02-05
FR9901525A FR2789524B1 (en) 1999-02-05 1999-02-05 CONNECTION ASSEMBLY FOR A CIRCUIT BREAKER

Publications (2)

Publication Number Publication Date
EP1026793A1 EP1026793A1 (en) 2000-08-09
EP1026793B1 true EP1026793B1 (en) 2008-11-05

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Application Number Title Priority Date Filing Date
EP20000410002 Expired - Lifetime EP1026793B1 (en) 1999-02-05 2000-01-17 Connection assembly for a circuit breaker

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EP (1) EP1026793B1 (en)
DE (1) DE60040702D1 (en)
FR (1) FR2789524B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI112728B (en) * 2002-08-12 2003-12-31 Ensto Busch Jaeger Oy socket

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258969A (en) * 1979-11-19 1981-03-31 Stallard Jerrel L Reversing plug connector
DE3030906C2 (en) * 1980-08-14 1983-08-25 Siemens AG, 1000 Berlin und 8000 München Switching plug device with a jumper plug
FR2739973B1 (en) * 1995-10-11 1997-12-05 Schneider Electric Sa CONNECTION ASSEMBLY

Also Published As

Publication number Publication date
FR2789524A1 (en) 2000-08-11
FR2789524B1 (en) 2001-03-16
EP1026793A1 (en) 2000-08-09
DE60040702D1 (en) 2008-12-18

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