WO2007017573A1 - Neutral connection device provided with a grounded switch - Google Patents

Neutral connection device provided with a grounded switch Download PDF

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Publication number
WO2007017573A1
WO2007017573A1 PCT/FR2006/001822 FR2006001822W WO2007017573A1 WO 2007017573 A1 WO2007017573 A1 WO 2007017573A1 FR 2006001822 W FR2006001822 W FR 2006001822W WO 2007017573 A1 WO2007017573 A1 WO 2007017573A1
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WO
WIPO (PCT)
Prior art keywords
jaws
bar
pairs
switch
push button
Prior art date
Application number
PCT/FR2006/001822
Other languages
French (fr)
Inventor
Laurent Gaillard
Marc Soler
Original Assignee
Manufacture D'appareillage Electrique De Cahors
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manufacture D'appareillage Electrique De Cahors filed Critical Manufacture D'appareillage Electrique De Cahors
Publication of WO2007017573A1 publication Critical patent/WO2007017573A1/en
Priority to TNP2008000054A priority Critical patent/TNSN08054A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices

Definitions

  • Neutral connection device having a grounding switch
  • the present invention relates to a neutral connection device which includes a grounding switch.
  • Neutral connection devices are known comprising two pairs of axially remote connection jaws fixed on an insulating support and connected to one another by a removable connection strip, one of the pairs of jaws being connected to each other. electrically to the distribution network and the other pair of jaws being electrically connected to an electrical apparatus, in particular a transformer.
  • Such neutral connection devices in particular equip the low voltage switchboards placed immediately downstream of the MV / LV transformer.
  • the neutral low voltage of the transformer must be grounded when the neutral conductor is cut.
  • a LV switchboard has a general cut-off switch and thus the neutral of the transformer is grounded by the auxiliary contact of the switch.
  • the auxiliary contact closes when the switch is in the open position and connects the LV neutral of the transformer to earth.
  • some low voltage panels do not have a general cut-off switch.
  • the aim of the present invention is to remedy this gap by equipping each of the neutral connection devices of such low voltage switchboards with a grounding switch.
  • the invention thus relates to a neutral connection device, comprising two pairs of axially remote connection jaws, fixed on an insulating support, and connected to one another by a removable connection strip, one of the pairs of jaws being electrically connected to the distribution network and the other pair of jaws being electrically connected to an electrical apparatus, including a transformer.
  • this device is characterized in that, under the bar, is disposed a switch whose one of the terminals is connected to the neutral and the other terminal is connected to ground, this switch comprising a actuating member biased by elastic return means, said bar cooperating with said actuating member to move it to the open position of the switch, when placing the bar between the two pairs of jaws and to move it towards the position of closing of the switch under the action of the elastic return means, during the removal of the bar of the two pairs of jaws.
  • the switch of the connection device opens automatically during the establishment of the bar between the two pairs of jaws and closes automatically when removing the bar by establishing the grounding.
  • the actuating member is a push button disposed between the two pairs of jaws to be actuated by the bar when it is put in place on the two pairs of jaws, this button being integral with a first contact piece, and being biased by a spring, this first contact piece being spaced apart from a second fixed contact piece when the bar is in place in the two pairs of jaws and bears on the push button, this first contact piece coming into electrical contact with the second contact piece when the strip is removed from the two jaws, under the effect of the restoring force exerted by the spring.
  • said second fixed contact piece is constituted by two distinct contact pads, respectively connected to the terminal intended to be connected to the neutral and to the terminal intended to be connected to ground, these two contact pads and the two terminals. corresponding ones being arranged symmetrically on either side of a plane passing through the two pairs of jaws.
  • the assembly of the switch is housed in a U-section housing whose base extends transversely under the lower edge of the bar and the push button protruding from this base and whose two wings extend vertically. on both sides of the bar.
  • the dimension of the U-section housing measured transversely to the bar is at most equal to the diameter of the body of a fuse intended to be used. place between the two pairs of jaws of a phase connection device having the same structure and the same dimensions as the neutral connection device.
  • the switch of the connection device is fully housed in an available space below the bar, which is normally able to receive a fuse whose body has a much larger section than the bar.
  • FIG. 1 is an elevation view of a first embodiment of a neutral connection device according to the invention equipped with a grounding switch
  • FIG. 2 is a cross-sectional view of a another embodiment of a grounding switch, the strip of the connection device holding this switch in the open position
  • FIG. 3 is a view similar to FIG. 2, the bar being removed and the switch being in the closed position
  • FIG. 4 is a cross-sectional view of a grounding switch housed in an insulating housing, this switch being open,
  • FIG. 5 is a view similar to Figure 4, the switch being closed.
  • the neutral connection device comprises (see FIG. 1) two pairs of connection jaws 1, 2 spaced apart axially, fixed on an insulating support 3, and connected to one another. another by a removable connection strip 4.
  • One of the pairs of jaws 1, 2 is electrically connected to the distribution network and the other pair of jaws is electrically connected to an electrical appliance, in particular a LV transformer.
  • under the bar 4 is disposed a switch 5 ( Figure 1), 6 ( Figures 2, 3) or 7 ( Figures 4,5).
  • One of the terminals of the switch is connected to the neutral and the other terminal is connected to ground.
  • the switch 5, 6 or 7 comprises an actuating member biased by elastic return means and the bar 4 cooperates with this actuating member to move it to the open position of the switch (see FIGS. 1, 2, 4), during the installation of the bar 4 between the two pairs of jaws 1, 2, and to move it towards the closed position of the switch (see FIGS. ) under the action of the elastic return means, during the removal of the bar 4 of the two pairs of jaws 1, 2.
  • the actuating member is a push button 8 disposed between the two pairs of jaws 1, 2 to be actuated by the bar 4 when it is placed on the two pairs of jaws 1, 2
  • the push-button 8 is integral with a first contact piece 9 (FIG. 1) or 9a (FIGS. 2 to 5) and is biased by a spring 10.
  • This first contact piece 9, 9a is spaced apart by a second contact piece 11 ( Figure 1) or 11a ( Figures 2 to 5) when the bar 4 is in place in the two pairs of jaws 1, 2 and is supported on the push button as shown in Figures 1, 2 and 4
  • the first contact piece 9 or 9a comes into electrical contact with the second contact piece 11 or 11a when the strip 4 is removed from the two jaws 1, 2 (see FIGS. 3 and 5) under the effect of FIG. restoring force exerted by the spring 10 on the push button 8.
  • the second fixed contact piece is constituted by two distinct contact pads 11a, respectively connected to the terminal 12a intended to be connected to the neutral and the terminal 12b intended to be connected to ground.
  • the two contact pads 11a and the two corresponding terminals 12a, 12b are arranged symmetrically on either side of a vertical plane P passing through the two pairs of jaws 1, 2.
  • Figures 4 and 5 show that the assembly of the switch 6 is housed in an insulating casing 13 of U-section whose base extends transversely under the lower edge of the bar 4, the push-button 8 protruding from this base, and whose two wings extend vertically on either side of the bar 4.
  • FIGS. 4 and 5 further show that the dimension of the U-section housing 13 measured transversely to the bar 4 is at most equal to the transverse dimension D of the body of a fuse designed to be placed between the two pairs of jaws of a phase connection device having the same structure and dimensions as the neutral connection device.
  • the whole of the switch, including its insulating casing 13 fits inside a volume V of square section which is free, because the terminal strip 4 has a much greater transverse dimension weak than that of a fuse.
  • the push-button 8 cooperates with a contact blade 9a whose opposite ends 9b, 9c can each come into contact with one of the two fixed contact pads 11a, 1b. action of a return spring 10 and away from them, when the bar 4 is in place and pushes down the push button 8 and the contact blade 9a.
  • the pushbutton 8 is slidably mounted relative to the wall 14 of the housing and relative to the contact blade 9a against the action of a spring which pushes the push button in a direction opposite to the contact blade 9a.
  • the spring 15a has a lower setting force than the two return springs 10 which urge the ends 9b, 9c of the contact blade 9a, so that the installation of the bar 4 in the corresponding jaws (c ') that is to say in the direction of the arrow F of Figure 4) causes, in a first phase, a displacement of the free pushbutton 8 relative to the blade 9a with compression of the corresponding spring 15, then an additional movement of the pushbutton 8 with movement of the contact blade 9a downwardly opposite the fixed contact pads 11a.
  • the total travel of the push button is greater than that of the contact blade 9a. This arrangement prevents the bar 4 moves the contact blade 9a and opens the switch before the bar is sufficiently engaged in the jaws 1, 2.
  • the switch 5, 6 or 7 makes it possible to obtain an automatic earthing as soon as the bar is disconnected from the jaws I 1 2;
  • this switch including the housing which isolates it, fits in an available space, because of the reduced transverse dimension of the bar relative to that of a fuse that the connection device is able to receive.
  • the invention also relates to a low voltage switchboard having a plurality of neutral connection devices each having a grounding switch. In this case, it is advantageous to connect in series all the switches and to connect to earth the last of these switches.
  • the assembly is connected to the ground only when all the bars have been removed from the corresponding jaws.

Abstract

A neutral connection device comprises two pairs of axially remote connection jaws (1, 2), which are fixed to an insulating support and connected to each other by a removable connecting battery (4), wherein one jaw pair (1, 2) is electrically connected to a supply network and the other jaw pair is electrically connected to an electrical device, in particular a transformer. The inventive device is characterised in that it comprises a switch (5, 6, 7) which is placed under the battery (4), one terminal thereof is connected to a neutral conductor and the other terminal is grounded, the switch (5, 6, 7) is provided with an actuator tensioned by elastic return means, said battery (4) interacts with said actuator in such a way that it is displaceable towards the switch (5, 6, 7) open position, when said battery (4) is placed between two jaw pairs (1, 2), and towards the switch (5, 6, 7) closed position produced by the elastic return means action, when the battery (4) is removed from the two jaw pairs(1, 2).

Description

Dispositif de connexion de neutre comportant un interrupteur de mise à la terre Neutral connection device having a grounding switch
La présente invention concerne un dispositif de connexion de neutre qui comporte un interrupteur de mise à la terre. On connaît des dispositifs de connexion de neutre, comprenant deux paires de mâchoires de connexion distantes axialement, fixées sur un support isolant, et reliées l'une à l'autre par une barrette de connexion amovible, l'une des paires de mâchoires étant reliée électriquement au réseau de distribution et l'autre paire de mâchoires étant reliée électriquement à un appareil électrique, notamment un transformateur.The present invention relates to a neutral connection device which includes a grounding switch. Neutral connection devices are known comprising two pairs of axially remote connection jaws fixed on an insulating support and connected to one another by a removable connection strip, one of the pairs of jaws being connected to each other. electrically to the distribution network and the other pair of jaws being electrically connected to an electrical apparatus, in particular a transformer.
De tels dispositifs de connexion de neutre équipent notamment les tableaux basse tension placés immédiatement en aval du transformateur HTA/BT. Le neutre basse tension du transformateur doit être relié à la terre lorsque le conducteur de neutre est coupé. Généralement, un tableau BT possède un interrupteur de coupure générale et donc la mise à la terre du neutre du transformateur est réalisée par le contact auxiliaire de l'interrupteur. Le contact auxiliaire se ferme lorsque l'interrupteur est en position ouverte et relie le neutre BT du transformateur à la terre. Cependant, certains tableaux basse tension ne possèdent pas d'interrupteur de coupure générale.Such neutral connection devices in particular equip the low voltage switchboards placed immediately downstream of the MV / LV transformer. The neutral low voltage of the transformer must be grounded when the neutral conductor is cut. Generally, a LV switchboard has a general cut-off switch and thus the neutral of the transformer is grounded by the auxiliary contact of the switch. The auxiliary contact closes when the switch is in the open position and connects the LV neutral of the transformer to earth. However, some low voltage panels do not have a general cut-off switch.
Le but de la présente invention est de remédier à cette lacune en équipant chacun des dispositifs de connexion de neutre de tels tableaux basse tension d'un interrupteur de mise à la terre. L'invention vise ainsi un dispositif de connexion de neutre, comprenant deux paires de mâchoires de connexion distantes axialement, fixées sur un support isolant, et reliées l'une à l'autre par une barrette de connexion amovible, l'une des paires de mâchoires étant reliée électriquement au réseau de distribution et l'autre paire de mâchoires étant reliée électriquement à un appareil électrique, notamment un transformateur.The aim of the present invention is to remedy this gap by equipping each of the neutral connection devices of such low voltage switchboards with a grounding switch. The invention thus relates to a neutral connection device, comprising two pairs of axially remote connection jaws, fixed on an insulating support, and connected to one another by a removable connection strip, one of the pairs of jaws being electrically connected to the distribution network and the other pair of jaws being electrically connected to an electrical apparatus, including a transformer.
Suivant l'invention, ce dispositif est caractérisé en ce que, sous la barrette, est disposé un interrupteur dont l'une des bornes est reliée au neutre et l'autre borne est reliée à la masse, cet interrupteur comportant un organe d'actionnement sollicité par des moyens élastiques de rappel, ladite barrette coopérant avec ledit organe d'actionnement pour le déplacer vers la position d'ouverture de l'interrupteur, lors de la mise en place de la barrette entre les deux paires des mâchoires et pour le déplacer vers la position de fermeture de l'interrupteur sous l'action des moyens élastiques de rappel, lors de l'enlèvement de la barrette des deux paires de mâchoires.According to the invention, this device is characterized in that, under the bar, is disposed a switch whose one of the terminals is connected to the neutral and the other terminal is connected to ground, this switch comprising a actuating member biased by elastic return means, said bar cooperating with said actuating member to move it to the open position of the switch, when placing the bar between the two pairs of jaws and to move it towards the position of closing of the switch under the action of the elastic return means, during the removal of the bar of the two pairs of jaws.
Ainsi, l'interrupteur du dispositif de connexion s'ouvre automatiquement lors de la mise en place de la barrette entre les deux paires de mâchoires et se ferme automatiquement lors de l'enlèvement de cette barrette en établissant la mise à la terre.Thus, the switch of the connection device opens automatically during the establishment of the bar between the two pairs of jaws and closes automatically when removing the bar by establishing the grounding.
Selon une réalisation avantageuse de l'invention, l'organe d'actionnement est un bouton poussoir disposé entre les deux paires de mâchoires pour être actionné par la barrette lors de sa mise en place sur les deux paires de mâchoires, ce bouton étant solidaire d'une première pièce de contact, et étant sollicité par un ressort, cette première pièce de contact étant espacée d'une seconde pièce de contact fixe lorsque la barrette est en place dans les deux paires de mâchoires et prend appui sur le bouton poussoir, cette première pièce de contact venant en contact électrique avec la seconde pièce de contact lorsque la barrette est enlevée des deux mâchoires, sous l'effet de la force de rappel exercée par le ressort.According to an advantageous embodiment of the invention, the actuating member is a push button disposed between the two pairs of jaws to be actuated by the bar when it is put in place on the two pairs of jaws, this button being integral with a first contact piece, and being biased by a spring, this first contact piece being spaced apart from a second fixed contact piece when the bar is in place in the two pairs of jaws and bears on the push button, this first contact piece coming into electrical contact with the second contact piece when the strip is removed from the two jaws, under the effect of the restoring force exerted by the spring.
De préférence, ladite seconde pièce de contact fixe est constituée par deux plages de contact distinctes, raccordées respectivement à la borne destinée à être reliée au neutre et à la borne destinée à être reliée à la masse, ces deux plages de contact et les deux bornes correspondantes étant disposées symétriquement de part et d'autre d'un plan passant par les deux paires de mâchoires.Preferably, said second fixed contact piece is constituted by two distinct contact pads, respectively connected to the terminal intended to be connected to the neutral and to the terminal intended to be connected to ground, these two contact pads and the two terminals. corresponding ones being arranged symmetrically on either side of a plane passing through the two pairs of jaws.
Avantageusement, l'ensemble de l'interrupteur est logé dans un boîtier de section en U dont la base s'étend transversalement sous le bord inférieur de la barrette et le bouton poussoir faisant saillie de cette base et dont les deux ailes s'étendent verticalement de part et d'autre de la barrette.Advantageously, the assembly of the switch is housed in a U-section housing whose base extends transversely under the lower edge of the bar and the push button protruding from this base and whose two wings extend vertically. on both sides of the bar.
Selon une réalisation encore plus avantageuse de l'invention, la dimension du boîtier de section en U mesurée transversalement à la barrette est au plus, égale au diamètre du corps d'un fusible prévu pour être mis en place entre les deux paires de mâchoires d'un dispositif de connexion de phase ayant la même structure et les mêmes dimensions que le dispositif de connexion de neutre.According to an even more advantageous embodiment of the invention, the dimension of the U-section housing measured transversely to the bar is at most equal to the diameter of the body of a fuse intended to be used. place between the two pairs of jaws of a phase connection device having the same structure and the same dimensions as the neutral connection device.
Ainsi, l'interrupteur du dispositif de connexion est entièrement logé dans un espace disponible situé sous la barrette, qui est normalement apte à recevoir un fusible dont le corps présente une section nettement plus importante que celle de la barrette.Thus, the switch of the connection device is fully housed in an available space below the bar, which is normally able to receive a fuse whose body has a much larger section than the bar.
D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après. Aux dessins annexés, donnés à titre d'exemples non limitatifs :Other features and advantages of the invention will become apparent in the description below. In the accompanying drawings, given as non-limiting examples:
La figure 1 est une vue en élévation d'un premier mode de réalisation d'un dispositif de connexion de neutre selon l'invention équipé d'un interrupteur de mise à la terre, la figure 2 est une vue en coupe transversale d'un autre mode de réalisation d'un interrupteur de mise à la terre, la barrette du dispositif de connexion maintenant cet interrupteur en position ouverte,FIG. 1 is an elevation view of a first embodiment of a neutral connection device according to the invention equipped with a grounding switch, FIG. 2 is a cross-sectional view of a another embodiment of a grounding switch, the strip of the connection device holding this switch in the open position,
- la figure 3 est une vue analogue à la figure 2, la barrette étant enlevée et l'interrupteur étant en position fermée, - la figure 4 est une vue en coupe transversale d'un interrupteur de mise à la terre logé dans boîtier isolant, cet interrupteur étant ouvert,FIG. 3 is a view similar to FIG. 2, the bar being removed and the switch being in the closed position, FIG. 4 is a cross-sectional view of a grounding switch housed in an insulating housing, this switch being open,
- la figure 5 est une vue analogue à la figure 4, l'interrupteur étant fermé.- Figure 5 is a view similar to Figure 4, the switch being closed.
Dans toutes les versions représentées sur les figures annexées, le dispositif de connexion de neutre, comprend (voir figure 1) deux paires de mâchoires de connexion 1, 2 distantes axialement, fixées sur un support isolant 3, et reliées l'une à l'autre par une barrette de connexion amovible 4. L'une des paires de mâchoires 1, 2 est reliée électriquement au réseau de distribution et l'autre paire de mâchoires est reliée électriquement à un appareil électrique, notamment un transformateur BT. Selon l'invention, sous la barrette 4 est disposé un interrupteur 5 (figure 1), 6 (figures 2, 3) ou 7 (figures 4,5). L'une des bornes de l'interrupteur est reliée au neutre et l'autre borne est reliée à la masse.In all the versions represented in the appended figures, the neutral connection device comprises (see FIG. 1) two pairs of connection jaws 1, 2 spaced apart axially, fixed on an insulating support 3, and connected to one another. another by a removable connection strip 4. One of the pairs of jaws 1, 2 is electrically connected to the distribution network and the other pair of jaws is electrically connected to an electrical appliance, in particular a LV transformer. According to the invention, under the bar 4 is disposed a switch 5 (Figure 1), 6 (Figures 2, 3) or 7 (Figures 4,5). One of the terminals of the switch is connected to the neutral and the other terminal is connected to ground.
Dans tous les exemples représentés, l'interrupteur 5, 6 ou 7 comporte un organe d'actionnement sollicité par des moyens élastiques de rappel et la barrette 4 coopère avec cet organe d'actionnement pour le déplacer vers la position d'ouverture de l'interrupteur (voir figures 1, 2, 4), lors de la mise en place de la barrette 4 entre les deux paires de mâchoires 1, 2, et pour le déplacer vers la position de fermeture de l'interrupteur (voir figures 3 et 5) sous l'action des moyens élastiques de rappel, lors de l'enlèvement de la barrette 4 des deux paires de mâchoires 1, 2.In all the examples shown, the switch 5, 6 or 7 comprises an actuating member biased by elastic return means and the bar 4 cooperates with this actuating member to move it to the open position of the switch (see FIGS. 1, 2, 4), during the installation of the bar 4 between the two pairs of jaws 1, 2, and to move it towards the closed position of the switch (see FIGS. ) under the action of the elastic return means, during the removal of the bar 4 of the two pairs of jaws 1, 2.
Dans les exemples représentés, l'organe d'actionnement est un bouton-poussoir 8 disposé entre les deux paires de mâchoires 1, 2 pour pouvoir être actionné par la barrette 4 lors de sa mise en place sur les deux paires de mâchoires 1, 2. Le bouton-poussoir 8 est solidaire d'une première pièce de contact 9 (figure 1) ou 9a (figures 2 à 5) et est sollicité par un ressort 10. Cette première pièce de contact 9, 9a est espacée d'une seconde pièce de contact 11 (figure 1) ou lia (figures 2 à 5) lorsque la barrette 4 est en place dans les deux paires de mâchoires 1, 2 et prend appui sur le bouton-poussoir comme indiqué sur les figures 1, 2 et 4. Par contre, la première pièce de contact 9 ou 9a vient en contact électrique avec la seconde pièce de contact 11 ou lia lorsque la barrette 4 est enlevée des deux mâchoires 1, 2 (voir figures 3 et 5) sous l'effet de la force de rappel exercée par le ressort 10 sur le bouton-poussoir 8. Dans les versions représentées sur les figures 2 à 5, la seconde pièce de contact fixe est constituée par deux plages de contact distinctes lia, raccordées respectivement à la borne 12a destinée à être reliée au neutre et à la borne 12b destinée à être reliée à la masse. Les deux plages de contact lia et les deux bornes correspondantes 12a, 12b sont disposées symétriquement de part et d'autre d'un plan vertical P passant par les deux paires de mâchoires 1, 2.In the examples shown, the actuating member is a push button 8 disposed between the two pairs of jaws 1, 2 to be actuated by the bar 4 when it is placed on the two pairs of jaws 1, 2 The push-button 8 is integral with a first contact piece 9 (FIG. 1) or 9a (FIGS. 2 to 5) and is biased by a spring 10. This first contact piece 9, 9a is spaced apart by a second contact piece 11 (Figure 1) or 11a (Figures 2 to 5) when the bar 4 is in place in the two pairs of jaws 1, 2 and is supported on the push button as shown in Figures 1, 2 and 4 On the other hand, the first contact piece 9 or 9a comes into electrical contact with the second contact piece 11 or 11a when the strip 4 is removed from the two jaws 1, 2 (see FIGS. 3 and 5) under the effect of FIG. restoring force exerted by the spring 10 on the push button 8. In the versions shown on the f FIGS. 2 to 5, the second fixed contact piece is constituted by two distinct contact pads 11a, respectively connected to the terminal 12a intended to be connected to the neutral and the terminal 12b intended to be connected to ground. The two contact pads 11a and the two corresponding terminals 12a, 12b are arranged symmetrically on either side of a vertical plane P passing through the two pairs of jaws 1, 2.
Les figures 4 et 5 montrent que l'ensemble de l'interrupteur 6 est logé dans un boîtier isolant 13 de section en U dont la base s'étend transversalement sous le bord inférieur de la barrette 4, le bouton-poussoir 8 faisant saillie de cette base, et dont les deux ailes s'étendent verticalement de part et d'autre de la barrette 4.Figures 4 and 5 show that the assembly of the switch 6 is housed in an insulating casing 13 of U-section whose base extends transversely under the lower edge of the bar 4, the push-button 8 protruding from this base, and whose two wings extend vertically on either side of the bar 4.
Les figures 4 et 5 montrent en outre, que la dimension du boîtier 13 de section en U mesurée transversalement à la barrette 4, est au plus, égale à la dimension transversale D du corps d'un fusible prévu pour être mis en place entre les deux paires de mâchoires d'un dispositif de connexion de phase ayant la même structure et les mêmes dimensions que le dispositif de connexion de neutre.FIGS. 4 and 5 further show that the dimension of the U-section housing 13 measured transversely to the bar 4 is at most equal to the transverse dimension D of the body of a fuse designed to be placed between the two pairs of jaws of a phase connection device having the same structure and dimensions as the neutral connection device.
Autrement dit, l'ensemble de l'interrupteur, y compris son boîtier isolant 13 s'inscrit à l'intérieur d'un volume V de section carrée qui est libre, du fait que la barrette de connexion 4 a une dimension transversale beaucoup plus faible que celle d'un fusible.In other words, the whole of the switch, including its insulating casing 13 fits inside a volume V of square section which is free, because the terminal strip 4 has a much greater transverse dimension weak than that of a fuse.
Par ailleurs, dans les cas des figures 2 à 5, le bouton-poussoir 8 coopère avec une lame de contact 9a dont les extrémités opposées 9b, 9c peuvent venir en contact chacune avec l'une des deux plages de contact fixes lia, sous l'action d'un ressort de rappel 10 et s'écarter de celles-ci, lorsque la barrette 4 est en place et pousse vers le bas le bouton-poussoir 8 et la lame de contact 9a.Moreover, in the cases of FIGS. 2 to 5, the push-button 8 cooperates with a contact blade 9a whose opposite ends 9b, 9c can each come into contact with one of the two fixed contact pads 11a, 1b. action of a return spring 10 and away from them, when the bar 4 is in place and pushes down the push button 8 and the contact blade 9a.
Dans le cas de la version représentée sur les figures 4 et 5, le bouton- poussoir 8 est monté coulissant par rapport à la paroi 14 du boîtier et par rapport à la lame de contact 9a contre l'action d'un ressort qui pousse le bouton-poussoir dans une direction opposée à la lame de contact 9a.In the case of the version shown in Figures 4 and 5, the pushbutton 8 is slidably mounted relative to the wall 14 of the housing and relative to the contact blade 9a against the action of a spring which pushes the push button in a direction opposite to the contact blade 9a.
Le ressort 15a a une force de tarage inférieure à celle des deux ressorts de rappel 10 qui sollicitent les extrémités 9b, 9c de la lame de contact 9a, de telle sorte que la mise en place de la barrette 4 dans les mâchoires correspondantes (c'est-à-dire dans le sens de la flèche F de la figure 4) provoque, dans une première phase, un déplacement du bouton- poussoir 8 libre par rapport à la lame 9a avec compression du ressort correspondant 15, puis un déplacement supplémentaire du bouton-poussoir 8 avec déplacement de la lame de contact 9a vers le bas à l'opposé des plages de contact fixes lia.The spring 15a has a lower setting force than the two return springs 10 which urge the ends 9b, 9c of the contact blade 9a, so that the installation of the bar 4 in the corresponding jaws (c ') that is to say in the direction of the arrow F of Figure 4) causes, in a first phase, a displacement of the free pushbutton 8 relative to the blade 9a with compression of the corresponding spring 15, then an additional movement of the pushbutton 8 with movement of the contact blade 9a downwardly opposite the fixed contact pads 11a.
Autrement dit, la course totale du bouton-poussoir est supérieure à celle de la lame de contact 9a. Cette disposition permet d'éviter que la barrette 4 déplace la lame de contact 9a et ouvre l'interrupteur avant que la barrette soit suffisamment engagée dans les mâchoires 1, 2.In other words, the total travel of the push button is greater than that of the contact blade 9a. This arrangement prevents the bar 4 moves the contact blade 9a and opens the switch before the bar is sufficiently engaged in the jaws 1, 2.
Cet avantage de l'invention s'ajoute ainsi aux deux principaux avantages de l'invention qui sont les suivants :This advantage of the invention is thus added to the two main advantages of the invention which are as follows:
- l'interrupteur 5, 6 ou 7 permet d'obtenir une mise automatique à la terre dès que la barrette est déconnectée des mâchoires I1 2 ;the switch 5, 6 or 7 makes it possible to obtain an automatic earthing as soon as the bar is disconnected from the jaws I 1 2;
- cet interrupteur, y compris le boîtier qui l'isole, s'inscrit dans un volume disponible, du fait de la dimension transversale réduite de la barrette par rapport à celle d'un fusible que le dispositif de connexion est apte à recevoir.this switch, including the housing which isolates it, fits in an available space, because of the reduced transverse dimension of the bar relative to that of a fuse that the connection device is able to receive.
L'invention vise également un tableau basse tension comportant plusieurs dispositifs de connexion de neutre comportant chacun un interrupteur de mise à la terre. Dans ce cas, il est avantageux de connecter en série tous les interrupteurs et de raccorder à la terre le dernier de ces interrupteurs.The invention also relates to a low voltage switchboard having a plurality of neutral connection devices each having a grounding switch. In this case, it is advantageous to connect in series all the switches and to connect to earth the last of these switches.
De ce fait, l'ensemble est raccordé à la terre seulement lorsque toutes les barrettes ont été retirées des mâchoires correspondantes. As a result, the assembly is connected to the ground only when all the bars have been removed from the corresponding jaws.

Claims

REVENDICATIONS
1. Dispositif de connexion de neutre, comprenant deux paires de mâchoire de connexion (1,2) distantes axialement, fixées sur un support isolant, et reliées l'une à l'autre par une barrette de connexion amovible (4), l'une des paires de mâchoires (1, 2) étant reliée électriquement au réseau de distribution et l'autre paire de mâchoires étant reliée électriquement à un appareil électrique, notamment un transformateur, caractérisé en ce que, sous la barrette (4), est disposé un interrupteur (5, 6, 7) dont l'une des bornes est reliée au neutre et l'autre borne est reliée à la masse, l'interrupteur (5, 6, 7) comportant un organe d'actionnement sollicité par des moyens élastiques de rappel, ladite barrette (4) coopérant avec ledit organe d'actionnement pour le déplacer vers la position d'ouverture de l'interrupteur (5, 6, 7) lors de la mise en place de la barrette (4) entre les deux paires de mâchoires (1, 2), et pour le déplacer vers la position de fermeture de l'interrupteur sous l'action des moyens élastiques de rappel, lors de l'enlèvement de la barrette (4) des deux paires de mâchoires (1, 2).Neutral connection device, comprising two axially spaced pairs of connection jaws (1, 2) fixed on an insulating support, and connected to each other by a removable connection strip (4), one of the pairs of jaws (1, 2) being electrically connected to the distribution network and the other pair of jaws being electrically connected to an electrical appliance, in particular a transformer, characterized in that, under the bar (4), is arranged a switch (5, 6, 7) of which one of the terminals is connected to the neutral and the other terminal is connected to the ground, the switch (5, 6, 7) comprising an actuator actuated by means resilient biasing means, said bar (4) cooperating with said actuating member to move it to the open position of the switch (5, 6, 7) during the insertion of the bar (4) between the two pairs of jaws (1, 2), and to move it to the closed position of the switch under the action of elastic return means, during the removal of the bar (4) of the two pairs of jaws (1, 2).
2. Dispositif de connexion selon la revendication 1, caractérisé en ce que l'organe d'actionnement est un bouton-poussoir (8) disposé entre les deux paires de mâchoires (1,2) pour être actionné par la barrette (4) lors de sa mise en place sur les deux paires de mâchoires, ce bouton-poussoir (8) étant solidaire d'une première pièce de contact (9, 9a) et étant sollicité par un ressort (10), cette première pièce de contact (9, 9a) étant espacée d'une seconde pièce de contact fixe (11, lia) lorsque la barrette (4) est en place dans les deux paires de mâchoires (1, 2) et prend appui sur le bouton- poussoir (8), cette première pièce de contact (9, 9a) venant en contact électrique avec la seconde pièce de contact (11, lia) lorsque la barrette (4) est enlevée des deux mâchoires (1, T)1 sous l'effet de la force de rappel exercée par le ressort (10) sur la bouton-poussoir. 2. Connection device according to claim 1, characterized in that the actuating member is a push button (8) disposed between the two pairs of jaws (1,2) to be actuated by the bar (4) when of its implementation on the two pairs of jaws, this push button (8) being secured to a first contact piece (9, 9a) and being biased by a spring (10), this first contact piece (9 9a) being spaced from a second fixed contact piece (11, 11a) when the bar (4) is in place in the two pairs of jaws (1, 2) and bears on the push button (8), this first contact piece (9, 9a) coming into electrical contact with the second contact piece (11, 11a) when the bar (4) is removed from the two jaws (1, T) 1 under the effect of the force of return by the spring (10) on the push button.
3. Dispositif de connexion selon la revendication 2, caractérisé en ce que ladite seconde pièce de contact fixe (11, lia) est constituée par deux plages de contact distinctes raccordées respectivement à la borne destinée à être reliée au neutre et à la borne destinée à être reliée à la masse, ces deux plages de contact (11, lia) et les deux bornes correspondantes étant disposées symétriquement de part et d'autre d'un plan (P) passant par les deux paires de mâchoires (1, 2).3. Connecting device according to claim 2, characterized in that said second fixed contact piece (11, 11a) is constituted by two distinct contact pads respectively connected to the terminal intended to be connected to the neutral and to the terminal intended for these two contact pads (11, 11a) and the two corresponding terminals are arranged symmetrically on either side of a plane (P) passing through the two pairs of jaws (1, 2).
4. Dispositif de connexion selon la revendication 3, caractérisé en ce que l'ensemble de l'interrupteur (6, 7) est logé dans un boîtier de section en4. Connection device according to claim 3, characterized in that the assembly of the switch (6, 7) is housed in a section housing in
U (13) dont la base s'étend transversalement sous le bord inférieur de la barrette (4), le bouton-poussoir (8) faisant saillie de cette base, et dont les deux ailes s'étendent verticalement de part et d'autre de la barrette (4).U (13) whose base extends transversely under the lower edge of the bar (4), the push button (8) projecting from this base, and whose two wings extend vertically on both sides of the bar (4).
5. Dispositif de connexion selon la revendication 4, caractérisé en ce que la dimension du boîtier de section en U (13) mesurée transversalement à la barrette (4) est; au plus, égale à la dimension transversale (D) du corps d'un fusible prévu pour être mis en place entre les deux paires de mâchoires (1, 2) d'un dispositif de connexion de phase ayant la même structure et les mêmes dimensions que le dispositif de connexion de neutre.Connection device according to claim 4, characterized in that the dimension of the U-section housing (13) measured transversely to the bar (4) is; at most, equal to the transverse dimension (D) of the body of a fuse designed to be placed between the two pairs of jaws (1, 2) of a phase-connecting device having the same structure and the same dimensions than the neutral connection device.
6. Dispositif de connexion selon l'une des revendications 3 à 5, caractérisé en ce que le bouton-poussoir (8) coopère avec une lame de contact (9a) dont les extrémités opposées peuvent venir en contact chacune avec l'une des deux plages de contact fixes (lia), sous l'action d'un ressort de rappel (10) et s'écarter de celles-ci, lorsque la barrette (4) est mise en place et pousse le bouton-poussoir (8) et la lame de contact (9a). 6. Connecting device according to one of claims 3 to 5, characterized in that the push button (8) cooperates with a contact blade (9a) whose opposite ends can come into contact with each of one of the two fixed contact pads (11a), under the action of a return spring (10) and away from them, when the bar (4) is put in place and pushes the push button (8) and the contact blade (9a).
7. Dispositif de connexion selon la revendication 6, caractérisé en ce que le bouton-poussoir (8) est sollicité par un ressort (15) qui le pousse dans une direction opposée à la lame de contact (9a), ce ressort (15) ayant une force de tarage inférieure à celle des deux ressorts de rappel (10) qui sollicitent les extrémités de la lame de contact (9a), de telle sorte que la mise en place de la barrette (4) dans les mâchoires correspondantes provoque, dans une première phase, un déplacement du bouton-poussoir (8) avec compression du ressort (15) correspondant, puis un déplacement supplémentaire du bouton-poussoir (8) avec déplacement de la lame de contact (9a).Connecting device according to claim 6, characterized in that the push button (8) is urged by a spring (15) which pushes it in a direction opposite to the contact blade (9a), this spring (15) having a lower setting force than the two return springs (10) which urge the ends of the contact blade (9a), so that the insertion of the bar (4) into the corresponding jaws causes, in a first phase, a displacement of the push-button (8) with compression of the corresponding spring (15), then an additional displacement of the push-button (8) with displacement of the contact blade (9a).
8. Tableau basse tension comportant plusieurs dispositifs de connexion de neutre selon l'une des revendications 1 à 7, comportant neutre chacun un interrupteur de mise à la terre, caractérisé en ce que tous les interrupteurs de ces dispositifs sont connectés en série, et en ce que seul le dernier est raccordé à la terre. 8. Low voltage switchboard comprising a plurality of neutral connection devices according to one of claims 1 to 7, each having a neutral grounding switch, characterized in that all the switches of these devices are connected in series, and in that only the last is connected to the ground.
PCT/FR2006/001822 2005-08-04 2006-07-26 Neutral connection device provided with a grounded switch WO2007017573A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TNP2008000054A TNSN08054A1 (en) 2005-08-04 2008-02-04 NEUTRAL CONNECTION DEVICE HAVING A GROUND SWITCH

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0508315A FR2889629B1 (en) 2005-08-04 2005-08-04 NEUTRAL CONNECTION DEVICE HAVING A GROUND SWITCH
FR0508315 2005-08-04

Publications (1)

Publication Number Publication Date
WO2007017573A1 true WO2007017573A1 (en) 2007-02-15

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ID=36045769

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Application Number Title Priority Date Filing Date
PCT/FR2006/001822 WO2007017573A1 (en) 2005-08-04 2006-07-26 Neutral connection device provided with a grounded switch

Country Status (4)

Country Link
FR (1) FR2889629B1 (en)
MA (1) MA29695B1 (en)
TN (1) TNSN08054A1 (en)
WO (1) WO2007017573A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN109193443A (en) * 2017-05-10 2019-01-11 工业连结与解决方案有限责任公司 Distribution system and its assemble method including neutral point attachment device

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GB433141A (en) * 1934-02-09 1935-08-09 Electrical Improvements Ltd Improvements in or relating to electric protective arrangements
DE1955494U (en) * 1966-12-16 1967-02-16 Continental Elektro Ind Ag SWITCHING STATUS SENSOR FOR ELECTRICAL FUSES.
EP0114245A1 (en) * 1982-12-24 1984-08-01 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Method to protect a disconnected low-voltage network and switching device for carrying out the method
US4806898A (en) * 1988-05-16 1989-02-21 Kearney-National, Inc. Polyphase interrupter responsive to single phase fault
FR2868889A1 (en) * 2004-04-08 2005-10-14 Novexia Sa Neutral point grounding device for HTA/BT class transformer, has electrically non-conducting actuator that is actuated when isolating link is withdrawn in order to actuate movable contact unit connected to neutral point

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB433141A (en) * 1934-02-09 1935-08-09 Electrical Improvements Ltd Improvements in or relating to electric protective arrangements
DE1955494U (en) * 1966-12-16 1967-02-16 Continental Elektro Ind Ag SWITCHING STATUS SENSOR FOR ELECTRICAL FUSES.
EP0114245A1 (en) * 1982-12-24 1984-08-01 BROWN, BOVERI & CIE Aktiengesellschaft Mannheim Method to protect a disconnected low-voltage network and switching device for carrying out the method
US4806898A (en) * 1988-05-16 1989-02-21 Kearney-National, Inc. Polyphase interrupter responsive to single phase fault
FR2868889A1 (en) * 2004-04-08 2005-10-14 Novexia Sa Neutral point grounding device for HTA/BT class transformer, has electrically non-conducting actuator that is actuated when isolating link is withdrawn in order to actuate movable contact unit connected to neutral point

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109193443A (en) * 2017-05-10 2019-01-11 工业连结与解决方案有限责任公司 Distribution system and its assemble method including neutral point attachment device
US10218159B2 (en) 2017-05-10 2019-02-26 Abb Schweiz Ag Electrical distribution system including neutral connection device and methods of assembling same
CN109193443B (en) * 2017-05-10 2021-12-03 Abb瑞士股份有限公司 Electrical distribution system including neutral point connection device and method of assembling same

Also Published As

Publication number Publication date
FR2889629A1 (en) 2007-02-09
TNSN08054A1 (en) 2009-07-14
FR2889629B1 (en) 2009-05-22
MA29695B1 (en) 2008-08-01

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