EP0948087A1 - Device and method for electrical connection between a bus bar and a conductor and an electrical connection assembly comprising such a device - Google Patents

Device and method for electrical connection between a bus bar and a conductor and an electrical connection assembly comprising such a device Download PDF

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Publication number
EP0948087A1
EP0948087A1 EP99420084A EP99420084A EP0948087A1 EP 0948087 A1 EP0948087 A1 EP 0948087A1 EP 99420084 A EP99420084 A EP 99420084A EP 99420084 A EP99420084 A EP 99420084A EP 0948087 A1 EP0948087 A1 EP 0948087A1
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EP
European Patent Office
Prior art keywords
conductor
bar
jaw
knife
electrical connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99420084A
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German (de)
French (fr)
Inventor
Claude Senebier
Michel Sage
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Mecelec Industries SAS
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Mecelec Industries SAS
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Publication date
Application filed by Mecelec Industries SAS filed Critical Mecelec Industries SAS
Publication of EP0948087A1 publication Critical patent/EP0948087A1/en
Withdrawn legal-status Critical Current

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2675—Electrical interconnections between two blocks, e.g. by means of busbars

Definitions

  • the invention relates to a device and a method for electrical connection between a bar of a bar system and an electrical conductor.
  • the invention also relates to a electrical connection assembly between a busbar and an electric cable.
  • Such an electrical connection assembly can be used in a connection cabinet, for example in a current distribution cabinet between several dwellings located in a street or to connect several networks together for the interconnection of the transformers used for energy distribution to allow, for example, maintenance operations on one or more of these transformers.
  • connection device electric type bar which includes a fixed bracket on a bar and designed to receive a terminal of a fuse the other terminal of which is received in a second bracket itself connected to a cable.
  • this system is found relatively complex and expensive when no fuse is necessary. Indeed, in this case, it is imperative to have a removable conductive bar between the jaws of the stirrups, this bar having the function of allowing a cut of circuit, in particular for an intervention on the driver, in downstream of the connection system or for decoupling two networks.
  • connection device economical, compact and total resistance lower than that of known devices.
  • the invention relates to a device for electrical connection between a bar of a bar system and an electrical conductor, this device comprising a stirrup connected to the bar and forming a jaw, characterized in that it comprises a nozzle provided with a receiving housing and connecting one end of the conductor, this end piece carrying a knife capable of being received in the jaw and be checked out.
  • the invention it is no longer necessary to use a conductive bar because the end piece, which is permanently secured to the end of the conductor and is not likely to be lost, fulfills both the function of this bar and that of the bracket for connection to the conductor cable.
  • the setting in place of the tip knife in the caliper jaw is performed using the natural flexibility of the conductor, which can be removed from the cable protective sheath to which it belongs over a great length because the device of the invention is particularly compact. It follows that the residual stresses on the conductor are low, this which improves the service life of the connection thus produced.
  • the invention also relates to a connection assembly between a busbar and an electric cable in which each cable conductor is connected to the bus corresponding by means of a device as above described.
  • This set is more economical and more compact than those of the prior art, while it induces on the cable lower mechanical stresses.
  • a bar 1 belonging to a bar system for example of the type of FR-A-2 715 775, is provided with an orifice 1 a for receiving a screw 2 for fixing an element to be worn to the electrical potential of the bar.
  • This element comprises a metal tongue 3 on which is fixed a stirrup 4 comprising two elastic blades 5 and 6 which form a jaw.
  • the free ends of the blades 5 and 6 are capped by covers 7 and 8 made of insulating plastic. It is nevertheless possible to provide a device in which the blades 5 and 6 are not topped with insulating covers.
  • a conductive cable 10 intended to be connected to the different bars of a bar system, includes several conductors 11, 12 and 13, including conductor 11 which is provided to be connected to the bar 1.
  • the free end 11 a of the conductor 11 is disposed in a receiving housing 20 formed in a ferrule 21 which also carries two screws 22 and 23 for contacting and immobilizing the end 11 a in the housing 20. It is possible that the device comprises a single contact screw or, on the contrary, more than two screws.
  • Note 20 has the orifice through which the end 11 a of the conductor 11 is introduced into the housing 20.
  • the orifice 20 a is formed on a face 21 a , called the rear face, of the end piece 21.
  • the end piece 21 On a face 21 b , opposite face 21 a and called front face, the end piece 21 carries a knife 24 whose dimensions are such that it can be introduced between the blades 5 and 6 by exerting a thrust force P, directed towards the bar 1, so that it is immobilized between these blades and brought to the same potential as these.
  • the tip 21 and the knife 24 are electrically conductive, so that in the position shown in Figure 2, the end 11a of the conductor 11 is brought to the electrical potential of the jaws 5 and 6, that is, tell the potential of the bar 1. In this position, the conductor 11 is therefore electrically connected to the bar 1.
  • the end piece 21 and the knife 24 are formed by a single piece, which improves robustness and decreases the electrical resistance of these parts.
  • the knife 24 When it is necessary to interrupt the connection between the bar 1 and the conductor 11, the knife 24 is extracted from jaws 5 and 6 by means of a pull ring 25 in which it is possible for an operator swipe a finger or a tool.
  • a tensile force T exerted on the ring 25 allows the tip 21 to be brought into the position of Figure 1 in which the knife 24 is not in contact with the blades 5 and 6.
  • the covers 7 and 8 electrically isolate the knife 24 blades 5 and 6, even if the knife 24 is in simple support against the jaw.
  • the knife 24 is “captive” in that it remains at the end of conductor open or closed position of the device.
  • the ring 25 is retractable, in the sense that it can slide in grooves 26 formed on the lateral faces end piece 21, which allows it to be pressed on the face upper end of this nozzle when it is not to be used, as shown in figure 2.
  • the device of the invention is particularly compact, so that the length L over which the protective sheath of the cable 10 can be removed around conductors 11 and equivalents is relatively long, for example of the order of 30 to 50 cm, so that the movements of the knife 4 by relative to the jaw formed by blades 5 and 6 are possible thanks to the flexibility or longitudinal flexibility of the conductor 11.
  • the stresses exerted on this driver and the game bars are distributed along the length L, so that they are weak.
  • An insulating jacket 30 is provided around the stirrup 4 and the end piece 21, this envelope being dimensioned for allow the release of the knife 24 relative to the blades 5 and 6.
  • This envelope 30 isolates the elements brought to potential of bar 1 in relation to the external environment, which avoids short circuits and provides a safety function to the device of the invention.
  • This cap includes a first opening 31 through which passes the conductor 11.
  • the opening 31 is shaped elongated so as to allow the displacement of the end piece 21 between the positions of Figures 1 and 2.
  • the casing 31 also comprises a second opening 32, formed in a face perpendicular to the one that includes the opening 31, which allows an operator to access the screws 22 and 23 for immobilizing the end 11a of the conductor 11 inside the housing 20. It is also possible to access the ring 25 through this opening 32 to exert the tensile force T.
  • the envelope 30 includes also a transparent part 33 forming a window which allows an operator to visualize the relative position of the knife 24 and the jaw formed by blades 5 and 6.
  • the envelope 30 further comprises an extension 34 which surrounds screw 2, so that this screw, which is brought to the potential of bar 1, is also electrically isolated compared to the outside.
  • An orifice 35 is provided in extension 34, to the right of screw 2, to allow the introduction an operating key for this screw, in particular for the installation of the device or its disassembly.
  • the tongue 3 is surrounded by the bottom 36 of the envelope 30 of which it constitutes, in fact, a frame. So the tongue 3, which is metallic, gives good rigidity to the envelope 30 and in particular at the bottom 36 against which comes put the end piece 21 back in the position shown in Figure 2.
  • the fact that the tongue 3 is embedded in the bottom 36 of the casing 30 guarantees its electrical insulation from the outside and, in particular, with respect to the neighboring bars of the device to bars.
  • a locking pin 37 is provided on one of the side walls of the casing 30, so as to maintain the nozzle 21 in its position in FIG. 1.
  • the introduction knife 24 in the jaw formed by blades 5 and 6 is blocked, unless pin 37 is removed voluntarily the path of the nozzle 21.
  • Closing the circuit requires a conscious operation of pin 37, which avoids any risk of accidental closure.
  • the pin 37 is loaded elastically towards a locking position of the end piece 31, so that the nozzle is blocked as soon as it has reached its position of the figure 1.
  • the function of pin 37 can be fulfilled by a tongue elastic formed on an inner face of the envelope 30.
  • an insulating strip is movable between a position where it covers the jaw and a position where it is spread apart by compared to that jaw. In position away from the blade insulating, the knife can be placed in the jaw. In the covering position, the blade prevents any contact of the knife with the jaw and, in particular, its introduction. The insulating strip can be returned to its position covering of the jaw due to its weight and / or elastic means.
  • the different means for locking the conductors of the same cable are locked in the position of locking by a common member such as a rod, a cable flexible or padlock.
  • the locking means then carry a tab or a hole allowing them to cooperate with a such blocking member.
  • the locking means have a specific color allowing immediate identification of their position, in particular through window 33.
  • the end 11a of the conductor 11 can be inserted into the housing 20 of the connector 21 while the latter is in position in the jaw formed of the blades 5 and 6.
  • the stirrup 4 is then fixed on the bar 1 with the screw 2 while the screws 22 and 23 are not tightened, which allows the end 11a of the conductor to be positioned freely in the housing 20. the screws 22 and 23 are then tightened.
  • An electrical connection assembly between the cable 10 and a busbar comprising several bars comprises a device as previously described for each conductor 11, 12 or 13.

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  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)

Abstract

The upper knife edge slides into the jaws, so that the electrical connection is readily attached and detached from the electrical rail.

Description

L'invention a trait à un dispositif et à un procédé de raccordement électrique entre une barre d'un système à barres et un conducteur électrique. L'invention a également trait à un ensemble de raccordement électrique entre un jeu de barres et un câble électrique.The invention relates to a device and a method for electrical connection between a bar of a bar system and an electrical conductor. The invention also relates to a electrical connection assembly between a busbar and an electric cable.

Un tel ensemble de raccordement électrique peut être utilisé dans une armoire de raccordement, par exemple dans une armoire de répartition de courant entre plusieurs habitations situées dans une rue ou pour relier entre eux plusieurs réseaux en vue de l'inter-connexion des transformateurs utilisés pour la distribution d'énergie afin de permettre, par exemple, des opérations de maintenance sur l'un ou plusieurs de ces transformateurs.Such an electrical connection assembly can be used in a connection cabinet, for example in a current distribution cabinet between several dwellings located in a street or to connect several networks together for the interconnection of the transformers used for energy distribution to allow, for example, maintenance operations on one or more of these transformers.

Par le document FR-A-2 731 847, il est connu de réaliser un système de branchement protégé sur un dispositif de raccordement électrique du type à barres qui comprend un étrier fixé sur une barre et prévu pour recevoir une borne d'un fusible dont l'autre borne est reçue dans un second étrier lui-même raccordé à un câble. Bien que présentant des avantages certains lorsqu'un fusible doit être utilisé, ce système s'avère relativement complexe et onéreux lorsqu'aucun fusible n'est nécessaire. En effet, dans ce cas, il est impératif de disposer un barreau conducteur amovible entre les mâchoires des étriers, ce barreau ayant pour fonction de permettre une coupure de circuit, notamment pour une intervention sur le conducteur, en aval du système de raccordement ou pour le découplage de deux réseaux. L'utilisation de deux mâchoires et d'un couteau implique la réalisation de deux zones de contact électrique amovible dont la résistance électrique totale est plus importante que celle d'une pièce massique. Il existe, au niveau de ces deux contacts, des risques d'échauffement ou d'oxydation et l'encombrement total du système ainsi réalisé est relativement important. En outre, le volume occupé par le dispositif connu ne laisse que peu de place libre au conducteur dans l'armoire ou le boítier qui le contient, de sorte que l'installation du conducteur dans le second étrier est délicate et induit des contraintes mécaniques relativement importantes sur le conducteur. Enfin, le barreau conducteur ou le fusible d'un système de l'art antérieur peut être perdu sur un chantier; il n'est alors plus possible de refermer le circuit électrique dans de bonnes conditions de fonctionnement et de sécurité.By document FR-A-2 731 847, it is known to produce a protected connection system on a connection device electric type bar which includes a fixed bracket on a bar and designed to receive a terminal of a fuse the other terminal of which is received in a second bracket itself connected to a cable. Although it has certain advantages when a fuse is to be used, this system is found relatively complex and expensive when no fuse is necessary. Indeed, in this case, it is imperative to have a removable conductive bar between the jaws of the stirrups, this bar having the function of allowing a cut of circuit, in particular for an intervention on the driver, in downstream of the connection system or for decoupling two networks. The use of two jaws and a knife involves the creation of two electrical contact zones removable with higher total electrical resistance than that of a mass room. There exists, at the level of these two contacts, risks of overheating or oxidation and the overall size of the system thus produced is relatively important. In addition, the volume occupied by the known device leaves little room for the driver in the cabinet or the box that contains it, so that the installation of the conductor in the second stirrup is delicate and induces relatively high mechanical stresses on the conductor. Finally, the conductive bar or the fuse of a system of the prior art may be lost on a site; it is not then no longer possible to close the electrical circuit in good operating and safety conditions.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif de raccordement électrique économique, compact et dont la résistance totale est inférieure à celle des dispositifs connus.It is to these disadvantages that we hear more particularly remedy the invention by proposing a connection device economical, compact and total resistance lower than that of known devices.

Dans cet esprit, l'invention concerne un dispositif de raccordement électrique entre une barre d'un système à barres et un conducteur électrique, ce dispositif comprenant un étrier connecté à la barre et formant une mâchoire, caractérisé en ce qu'il comprend un embout pourvu d'un logement de réception et de raccordement d'une extrémité du conducteur, cet embout portant un couteau apte à être reçu dans la mâchoire et à en être extrait.In this spirit, the invention relates to a device for electrical connection between a bar of a bar system and an electrical conductor, this device comprising a stirrup connected to the bar and forming a jaw, characterized in that it comprises a nozzle provided with a receiving housing and connecting one end of the conductor, this end piece carrying a knife capable of being received in the jaw and be checked out.

Grâce à l'invention, il n'est plus nécessaire d'utiliser un barreau conducteur car l'embout, qui est en permanence solidaire de l'extrémité du conducteur et ne risque pas d'être égaré, remplit à la fois la fonction de ce barreau et celle de l'étrier du raccordement au câble conducteur. En outre, la mise en place du couteau de l'embout dans la mâchoire de l'étrier est effectuée en utilisant la flexibilité naturelle du conducteur, qui peut être extrait de la gaine protectrice du câble auquel il appartient sur une grande longueur, car le dispositif de l'invention est particulièrement compact. Il en résulte que les contraintes rémanentes sur le conducteur sont faibles, ce qui améliore la durée de vie du raccordement ainsi réalisé.Thanks to the invention, it is no longer necessary to use a conductive bar because the end piece, which is permanently secured to the end of the conductor and is not likely to be lost, fulfills both the function of this bar and that of the bracket for connection to the conductor cable. In addition, the setting in place of the tip knife in the caliper jaw is performed using the natural flexibility of the conductor, which can be removed from the cable protective sheath to which it belongs over a great length because the device of the invention is particularly compact. It follows that the residual stresses on the conductor are low, this which improves the service life of the connection thus produced.

D'autres caractéristiques avantageuses de l'invention ressortent des revendications 2 à 9 ci-annexées.Other advantageous features of the invention Arises from claims 2 to 9 appended hereto.

L'invention concerne également un ensemble de raccordement électrique entre un jeu de barres et un câble électrique dans lequel chaque conducteur du câble est raccordé à la barre correspondante au moyen d'un dispositif tel que précédemment décrit. Cet ensemble est plus économique et plus compact que ceux de l'art antérieur, alors qu'il induit sur le câble des contraintes mécaniques plus faibles.The invention also relates to a connection assembly between a busbar and an electric cable in which each cable conductor is connected to the bus corresponding by means of a device as above described. This set is more economical and more compact than those of the prior art, while it induces on the cable lower mechanical stresses.

L'invention concerne enfin un procédé de raccordement qui peut être mis en oeuvre avec le dispositif de l'invention et, plus spécifiquement, un procédé qui consiste à :

  • introduire une extrémité du conducteur dans un logement de réception ménagé dans un embout immobilisé, de façon amovible, par rapport à un organe de support ;
  • assujettir l'organe de support par rapport à la barre et
  • immobiliser l'extrémité du conducteur dans le logement.
The invention finally relates to a connection method which can be implemented with the device of the invention and, more specifically, to a method which consists in:
  • inserting one end of the conductor into a receiving housing provided in an end piece which is detachably immobilized relative to a support member;
  • secure the support member relative to the bar and
  • immobilize the end of the conductor in the housing.

Des caractéristiques avantageuses du procédé de l'invention ressortent des revendications 12 à 14.Advantageous characteristics of the process of the invention Arises from claims 12 to 14.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaítront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un dispositif de raccordement conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une représentation schématique de principe en coupe d'un dispositif de raccordement conforme à l'invention en position ouverte ;
  • la figure 2 est une vue analogue à la figure 1 alors que le dispositif est en position fermée et
  • la figure 3 est une vue en perspective éclatée de certains éléments constitutifs du dispositif des figures 1 et 2.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a connection device in accordance with its principle, given solely by way of example and made with reference to the accompanying drawings in which:
  • Figure 1 is a schematic representation in principle in section of a connection device according to the invention in the open position;
  • Figure 2 is a view similar to Figure 1 while the device is in the closed position and
  • FIG. 3 is an exploded perspective view of certain constituent elements of the device of FIGS. 1 and 2.

Sur ces figures, une barre 1 appartenant à un système à barres, par exemple du type de FR-A-2 715 775, est pourvue d'un orifice 1a de réception d'une vis 2 de fixation d'un élément à porter au potentiel électrique de la barre. Cet élément comporte une languette métallique 3 sur laquelle est fixé un étrier 4 comportant deux lames élastiques 5 et 6 qui forment une mâchoire. Les extrémités libres des lames 5 et 6 sont coiffées par des caches 7 et 8 en matière plastique isolante. On peut néanmoins prévoir un dispositif dans lequel les lames 5 et 6 ne sont pas coiffées de caches isolants.In these figures, a bar 1 belonging to a bar system, for example of the type of FR-A-2 715 775, is provided with an orifice 1 a for receiving a screw 2 for fixing an element to be worn to the electrical potential of the bar. This element comprises a metal tongue 3 on which is fixed a stirrup 4 comprising two elastic blades 5 and 6 which form a jaw. The free ends of the blades 5 and 6 are capped by covers 7 and 8 made of insulating plastic. It is nevertheless possible to provide a device in which the blades 5 and 6 are not topped with insulating covers.

Un câble conducteur 10, prévu pour être raccordé aux différentes barres d'un système à barres, comprend plusieurs conducteurs 11, 12 et 13, dont le conducteur 11 qui est prévu pour être raccordé à la barre 1. A conductive cable 10, intended to be connected to the different bars of a bar system, includes several conductors 11, 12 and 13, including conductor 11 which is provided to be connected to the bar 1.

L'extrémité libre 11a du conducteur 11 est disposée dans un logement de réception 20 ménagé dans un embout 21 qui porte également deux vis 22 et 23 de contact et d'immobilisation de l'extrémité 11a dans le logement 20. Il est possible que le dispositif comprenne une unique vis de contact ou, au contraire, plus de deux vis.The free end 11 a of the conductor 11 is disposed in a receiving housing 20 formed in a ferrule 21 which also carries two screws 22 and 23 for contacting and immobilizing the end 11 a in the housing 20. It is possible that the device comprises a single contact screw or, on the contrary, more than two screws.

On note 20a l'orifice à travers lequel l'extrémité 11a du conducteur 11 est introduite dans le logement 20. L'orifice 20a est ménagé sur une face 21a, dite face arrière, de l'embout 21. Sur une face 21b, opposée à la face 21a et dite face avant, l'embout 21 porte un couteau 24 dont les dimensions sont telles qu'il peut être introduit entre les lames 5 et 6 en exerçant un effort de poussée P, dirigé vers la barre 1, de façon qu'il est immobilisé entre ces lames et porté au même potentiel que celles-ci.Note 20 has the orifice through which the end 11 a of the conductor 11 is introduced into the housing 20. The orifice 20 a is formed on a face 21 a , called the rear face, of the end piece 21. On a face 21 b , opposite face 21 a and called front face, the end piece 21 carries a knife 24 whose dimensions are such that it can be introduced between the blades 5 and 6 by exerting a thrust force P, directed towards the bar 1, so that it is immobilized between these blades and brought to the same potential as these.

L'embout 21 et le couteau 24 sont électriquement conducteurs, de sorte que, dans la position représentée à la figure 2, l'extrémité 11a du conducteur 11 est portée au potentiel électrique des mâchoires 5 et 6, c'est-à-dire au potentiel de la barre 1. Dans cette position, le conducteur 11 est donc électriquement raccordé à la barre 1.The tip 21 and the knife 24 are electrically conductive, so that in the position shown in Figure 2, the end 11a of the conductor 11 is brought to the electrical potential of the jaws 5 and 6, that is, tell the potential of the bar 1. In this position, the conductor 11 is therefore electrically connected to the bar 1.

De façon avantageuse, l'embout 21 et le couteau 24 sont formés par une même pièce monobloc, ce qui améliore la robustesse et diminue la résistance électrique de ces pièces.Advantageously, the end piece 21 and the knife 24 are formed by a single piece, which improves robustness and decreases the electrical resistance of these parts.

Lorsqu'il est nécessaire d'interrompre la connexion électrique réalisée entre la barre 1 et le conducteur 11, le couteau 24 est extrait des mâchoires 5 et 6 au moyen d'un anneau de traction 25 dans lequel il est possible à un opérateur de glisser un doigt ou un outil. Un effort de traction T exercé sur l'anneau 25 permet d'amener l'embout 21 dans la position de la figure 1 dans laquelle le couteau 24 n'est pas en contact avec les lames 5 et 6. En effet, dans cette position, les caches 7 et 8 isolent électriquement le couteau 24 des lames 5 et 6, même si le couteau 24 est en appui simple contre la mâchoire.When it is necessary to interrupt the connection between the bar 1 and the conductor 11, the knife 24 is extracted from jaws 5 and 6 by means of a pull ring 25 in which it is possible for an operator swipe a finger or a tool. A tensile force T exerted on the ring 25 allows the tip 21 to be brought into the position of Figure 1 in which the knife 24 is not in contact with the blades 5 and 6. In fact, in this position, the covers 7 and 8 electrically isolate the knife 24 blades 5 and 6, even if the knife 24 is in simple support against the jaw.

On note que, du fait du montage de l'embout 21 à l'extrémité 11a du conducteur 11, le couteau 24 est "imperdable" en ce sens qu'il demeure au bout du conducteur en position ouverte ou fermée du dispositif.It is noted that, due to the mounting of the tip 21 at the end 11a of the conductor 11, the knife 24 is "captive" in that it remains at the end of conductor open or closed position of the device.

Selon un aspect avantageux mais non obligatoire de l'invention, l'anneau 25 est rétractable, en ce sens qu'il peut coulisser dans des gorges 26 ménagées sur les faces latérales de l'embout 21, ce qui lui permet d'être plaqué sur la face supérieure de cet embout lorsqu'il ne doit pas être utilisé, comme représenté à la figure 2.According to an advantageous but not compulsory aspect of the invention, the ring 25 is retractable, in the sense that it can slide in grooves 26 formed on the lateral faces end piece 21, which allows it to be pressed on the face upper end of this nozzle when it is not to be used, as shown in figure 2.

Dans cette position, la liaison électrique entre la barre 1 et le conducteur 11 est donc interrompue et il est possible à un opérateur d'intervenir sur le circuit alimenté grâce au câble 10.In this position, the electrical connection between the bar 1 and conductor 11 is therefore interrupted and it is possible an operator to work on the circuit supplied with the cable 10.

Le dispositif de l'invention est particulièrement compact, de sorte que la longueur L sur laquelle la gaine protectrice du câble 10 peut être supprimée autour des conducteurs 11 et équivalents est relativement longue, par exemple de l'ordre de 30 à 50 cm, de sorte que les mouvements du couteau 4 par rapport à la mâchoire formée des lames 5 et 6 sont possibles grâce à la souplesse ou flexibilité longitudinale du conducteur 11. Ainsi, les contraintes exercées sur ce conducteur et le jeu de barres sont réparties sur la longueur L, de sorte qu'elles sont faibles.The device of the invention is particularly compact, so that the length L over which the protective sheath of the cable 10 can be removed around conductors 11 and equivalents is relatively long, for example of the order of 30 to 50 cm, so that the movements of the knife 4 by relative to the jaw formed by blades 5 and 6 are possible thanks to the flexibility or longitudinal flexibility of the conductor 11. Thus, the stresses exerted on this driver and the game bars are distributed along the length L, so that they are weak.

Une enveloppe isolante 30 est prévue autour de l'étrier 4 et de l'embout 21, cette enveloppe étant dimensionnée pour permettre le dégagement du couteau 24 par rapport aux lames 5 et 6. Cette enveloppe 30 isole les éléments portés au potentiel de la barre 1 par rapport à l'environnement extérieur, ce qui évite les courts-circuits et apporte une fonction de sécurité au dispositif de l'invention.An insulating jacket 30 is provided around the stirrup 4 and the end piece 21, this envelope being dimensioned for allow the release of the knife 24 relative to the blades 5 and 6. This envelope 30 isolates the elements brought to potential of bar 1 in relation to the external environment, which avoids short circuits and provides a safety function to the device of the invention.

Cette coiffe comprend une première ouverture 31 à travers laquelle passe le conducteur 11. L'ouverture 31 est de forme allongée de façon à permettre le déplacement de l'embout 21 entre les positions des figures 1 et 2.This cap includes a first opening 31 through which passes the conductor 11. The opening 31 is shaped elongated so as to allow the displacement of the end piece 21 between the positions of Figures 1 and 2.

L'enveloppe 31 comprend également une seconde ouverture 32, ménagée dans une face perpendiculaire à celle qui comprend l'ouverture 31, et qui permet à un opérateur d'accéder aux vis 22 et 23 pour l'immobilisation de l'extrémité 11a du conducteur 11 à l'intérieur du logement 20. Il est également possible d'accéder à l'anneau 25 à travers cette ouverture 32 pour exercer l'effort de traction T.The casing 31 also comprises a second opening 32, formed in a face perpendicular to the one that includes the opening 31, which allows an operator to access the screws 22 and 23 for immobilizing the end 11a of the conductor 11 inside the housing 20. It is also possible to access the ring 25 through this opening 32 to exert the tensile force T.

A proximité de l'ouverture 32, l'enveloppe 30 comprend également une partie transparente 33 formant fenêtre qui permet à un opérateur de visualiser la position relative du couteau 24 et de la mâchoire formée des lames 5 et 6.Near the opening 32, the envelope 30 includes also a transparent part 33 forming a window which allows an operator to visualize the relative position of the knife 24 and the jaw formed by blades 5 and 6.

L'enveloppe 30 comprend en outre une extension 34 qui entoure la vis 2, de sorte que cette vis, qui est portée au potentiel de la barre 1, est également isolée électriquement par rapport à l'extérieur. Un orifice 35 est prévu dans l'extension 34, au droit de la vis 2, pour permettre l'introduction d'une clé de manoeuvre de cette vis, en particulier pour la mise en place du dispositif ou son démontage.The envelope 30 further comprises an extension 34 which surrounds screw 2, so that this screw, which is brought to the potential of bar 1, is also electrically isolated compared to the outside. An orifice 35 is provided in extension 34, to the right of screw 2, to allow the introduction an operating key for this screw, in particular for the installation of the device or its disassembly.

La languette 3 est entourée par le fond 36 de l'enveloppe 30 dont elle constitue, en fait, une armature. Ainsi, la languette 3, qui est métallique, confère une bonne rigidité à l'enveloppe 30 et en particulier au fond 36 contre lequel vient reposer l'embout 21 dans la position de la figure 2. Le fait que la languette 3 est noyée dans le fond 36 de l'enveloppe 30 garantit son isolation électrique par rapport à l'extérieur et, notamment, par rapport aux barres voisines du dispositif à barres.The tongue 3 is surrounded by the bottom 36 of the envelope 30 of which it constitutes, in fact, a frame. So the tongue 3, which is metallic, gives good rigidity to the envelope 30 and in particular at the bottom 36 against which comes put the end piece 21 back in the position shown in Figure 2. The fact that the tongue 3 is embedded in the bottom 36 of the casing 30 guarantees its electrical insulation from the outside and, in particular, with respect to the neighboring bars of the device to bars.

Une goupille de verrouillage 37 est prévue sur une des parois latérales de l'enveloppe 30, de façon à maintenir l'embout 21 dans sa position de la figure 1. Ainsi, l'introduction du couteau 24 dans la mâchoire formée des lames 5 et 6 est bloquée, à moins que la goupille 37 ne soit retirée volontairement du trajet de l'embout 21. La fermeture du circuit nécessite une manoeuvre consciente de la goupille 37, ce qui évite tout risque de fermeture accidentelle. On peut, notamment, prévoir que la goupille 37 est chargée élastiquement vers une position de verrouillage de l'embout 31, de sorte que l'embout est bloqué dès qu'il a atteint sa position de la figure 1.A locking pin 37 is provided on one of the side walls of the casing 30, so as to maintain the nozzle 21 in its position in FIG. 1. Thus, the introduction knife 24 in the jaw formed by blades 5 and 6 is blocked, unless pin 37 is removed voluntarily the path of the nozzle 21. Closing the circuit requires a conscious operation of pin 37, which avoids any risk of accidental closure. We can, in particular, provide that the pin 37 is loaded elastically towards a locking position of the end piece 31, so that the nozzle is blocked as soon as it has reached its position of the figure 1.

Selon une variante non représentée de l'invention, la fonction de la goupille 37 peut être remplie par une languette élastique formée sur une face intérieure de l'enveloppe 30. Selon une autre variante non représentée de l'invention, une lame isolante est mobile entre une position où elle recouvre la mâchoire et une position où elle est écartée par rapport à cette mâchoire. En position écartée de la lame isolante, le couteau peut être mis en place dans la mâchoire. En position de recouvrement, la lame empêche tout contact du couteau avec la mâchoire et, en particulier, son introduction. La lame isolante peut être rappelée vers sa position de recouvrement de la mâchoire sous l'effet de son poids et/ou de moyens élastiques.According to a variant not shown of the invention, the function of pin 37 can be fulfilled by a tongue elastic formed on an inner face of the envelope 30. According to another variant not shown of the invention, an insulating strip is movable between a position where it covers the jaw and a position where it is spread apart by compared to that jaw. In position away from the blade insulating, the knife can be placed in the jaw. In the covering position, the blade prevents any contact of the knife with the jaw and, in particular, its introduction. The insulating strip can be returned to its position covering of the jaw due to its weight and / or elastic means.

D'autres moyens de verrouillage peuvent être envisagés.Other locking means can be envisaged.

Quel que soit le moyen de verrouillage envisagé, notamment goupille ou lame isolante, on peut prévoir que les différents moyens de verrouillage des conducteurs d'un même câble, quatre dans le cas d'un courant triphasé, sont bloqués en position de verrouillage par un organe commun tel qu'une tige, un câble souple ou un cadenas. Les moyens de verrouillage portent alors une patte ou un perçage leur permettant de coopérer avec un tel organe de blocage.Whatever the locking means envisaged, in particular insulating pin or blade, we can provide that the different means for locking the conductors of the same cable, four in the case of a three-phase current, are locked in the position of locking by a common member such as a rod, a cable flexible or padlock. The locking means then carry a tab or a hole allowing them to cooperate with a such blocking member.

On peut en outre prévoir que les moyens de verrouillage ont une couleur spécifique permettant un repérage immédiat de leur position, notamment à travers la fenêtre 33.It can also be provided that the locking means have a specific color allowing immediate identification of their position, in particular through window 33.

Compte tenu de la structure du dispositif de l'invention, l'extrémité 11a du conducteur 11 peut être introduite dans le logement 20 de l'embout 21 alors que celui-ci est en position dans la mâchoire formée des lames 5 et 6. L'étrier 4 est alors fixé sur la barre 1 grâce à la vis 2 alors que les vis 22 et 23 ne sont pas serrées, ce qui permet à l'extrémité 11a du conducteur de se positionner sans contrainte dans le logement 20. Les vis 22 et 23 sont ensuite serrées. Ainsi, il n'existe pas de contrainte mécanique résiduelle, sur le conducteur 11 ou sur le jeu de barres, qui résulteraient de la mise en place du dispositif.Given the structure of the device of the invention, the end 11a of the conductor 11 can be inserted into the housing 20 of the connector 21 while the latter is in position in the jaw formed of the blades 5 and 6. the stirrup 4 is then fixed on the bar 1 with the screw 2 while the screws 22 and 23 are not tightened, which allows the end 11a of the conductor to be positioned freely in the housing 20. the screws 22 and 23 are then tightened. Thus, there is no residual mechanical stress, on the conductor 11 or on the busbar, which would result from the installation of the device.

Un ensemble de raccordement électrique entre le câble 10 et un jeu de barres comprenant plusieurs barres comprend un dispositif tel que précédemment décrit pour chaque conducteur 11, 12 ou 13.An electrical connection assembly between the cable 10 and a busbar comprising several bars comprises a device as previously described for each conductor 11, 12 or 13.

Claims (14)

Dispositif de raccordement électrique entre une barre (1) d'un système à barres et un conducteur électrique, ledit dispositif comprenant un étrier (4) connecté à ladite barre et formant une mâchoire, caractérisé en ce qu'il comprend un embout (21) pourvu d'un logement (20) de réception et de raccordement d'une extrémité (11a) dudit conducteur (11), ledit embout portant un couteau (24) apte à être reçu dans ladite mâchoire (5, 6) et à en être extrait.Device for electrical connection between a bar (1) of a bar system and an electrical conductor, said device comprising a stirrup (4) connected to said bar and forming a jaw, characterized in that it comprises a nozzle (21) provided with a housing (20) for receiving and connecting an end (11 a ) of said conductor (11), said end piece carrying a knife (24) able to be received in said jaw (5, 6) and to be checked out. Dispositif de raccordement selon la revendication 1, caractérisé en ce que ledit couteau (24) est disposé sur une face (21b) dudit embout opposée à une face (21a) dudit embout dans laquelle est formé un orifice (20a) d'introduction de l'extrémité (11a) dudit conducteur (11) dans ledit logement (20).Connection device according to claim 1, characterized in that said knife (24) is disposed on a face (21 b ) of said end piece opposite to a face (21a) of said end piece in which is formed an orifice (20a) for introducing the end (11a) of said conductor (11) in said housing (20). Dispositif de raccordement selon l'une des revendications 1 ou 2, caractérisé en ce que ladite mâchoire est constituée de deux lames élastiques (5, 6) dont les extrémités sont pourvues de moyens d'isolation électrique (7, 8) entre ledit couteau (24) en appui simple sur lesdits moyens et lesdites lames.Connection device according to one of the claims 1 or 2, characterized in that said jaw is consisting of two elastic blades (5, 6) whose ends are provided with electrical isolation means (7, 8) between said knife (24) simple support on said means and said blades. Dispositif de raccordement selon l'une des revendications 1 à 3, caractérisé en ce que ladite mâchoire (5, 6) et ledit embout (21) sont logés dans une enveloppe isolante (30) à l'intérieur de laquelle ledit embout est apte à se déplacer entre une position en prise dans ladite mâchoire et une position extraite de ladite mâchoire.Connection device according to one of the claims 1 to 3, characterized in that said jaw (5, 6) and said tip (21) are housed in an insulating envelope (30) inside which said tip is able to move between a position engaged in said jaw and a position extracted from said jaw. Dispositif de raccordement selon la revendication 4, caractérisé en ce que ladite enveloppe coiffe (30) également des moyens (2) de fixation et de raccordement dudit étrier (4) sur ladite barre (1), un orifice (35) d'accès à ces moyens étant prévu dans ladite enveloppe.Connection device according to claim 4, characterized in that said covering cap (30) also means (2) for fixing and connecting said stirrup (4) on said bar (1), an orifice (35) for access to these means being provided in said envelope. Dispositif de raccordement selon l'une des revendications 4 ou 5, caractérisé en ce que ladite enveloppe (30) comprend une ouverture (32) d'accès à des moyens (22, 23) de fixation dudit conducteur (11) dans ledit embout (21). Connection device according to one of the claims 4 or 5, characterized in that said envelope (30) comprises an opening (32) for access to means (22, 23) for fixing said conductor (11) in said end piece (21). Dispositif de raccordement selon l'une des revendications 4 à 6, caractérisé en ce que ledit étrier (4) se prolonge par une patte (3) formant âme pour ladite enveloppe (30).Connection device according to one of the claims 4 to 6, characterized in that said stirrup (4) extends by a tab (3) forming a core for said envelope (30). Dispositif de raccordement selon l'une des revendications 4 à 7, caractérisé en ce que ladite enveloppe (30) porte un moyen (37) de verrouillage commandé dudit embout (21) dans une position où ledit couteau (24) est extrait de ladite mâchoire (5, 6).Connection device according to one of the claims 4 to 7, characterized in that said envelope (30) carries means (37) for controlled locking of said end piece (21) in a position where said knife (24) is extracted from said jaw (5, 6). Dispositif de raccordement selon l'une des revendications précédentes, caractérisé en ce que ledit embout (21) est pourvu d'un anneau de préhension (25).Connection device according to one of the claims previous, characterized in that said tip (21) is provided with a gripping ring (25). Ensemble de raccordement électrique entre un jeu de barres et un câble électrique (10), caractérisé en ce que chaque conducteur (11, 12, 13) dudit câble est raccordé à une barre (1) correspondante au moyen d'un dispositif (2-37) conforme à l'une des revendications précédentes.Electrical connection assembly between a set of bars and an electric cable (10), characterized in that each conductor (11, 12, 13) of said cable is connected to a corresponding bar (1) by means of a device (2-37) according to one of the preceding claims. Procédé de raccordement électrique entre une barre d'un système à barres et un conducteur, caractérisé en ce qu'il consiste à : introduire une extrémité (11a) dudit conducteur (11) dans un logement de réception (20) ménagé dans un embout (21) immobilisé, de façon amovible, par rapport à un organe de support (4) ; assujettir ledit organe de support (4) par rapport à ladite barre (1) et immobiliser ladite extrémité (11a) dans ledit logement (20). Method of electrical connection between a bar of a bar system and a conductor, characterized in that it consists of: inserting an end (11 a ) of said conductor (11) into a receiving housing (20) formed in a tip (21) immobilized, in a removable manner, relative to a support member (4); securing said support member (4) relative to said bar (1) and immobilizing said end (11a) in said housing (20). Procédé de raccordement électrique selon la revendications 11, caractérisé en ce qu'il consiste à immobiliser ledit embout (21) par introduction d'un couteau (24) entre des lames (5, 6) dudit organe de support (4).Electrical connection method according to claims 11, characterized in that it consists in immobilizing said end piece (21) by inserting a knife (24) between blades (5, 6) of said support member (4). Procédé de raccordement électrique selon la revendication 12, caractérisé en ce qu'il consiste à maintenir, au moyen d'un organe de verrouillage (37), ledit embout (21) dans une position telle que l'introduction dudit couteau (24) entre lesdites lames (5, 6) est bloquée.Electrical connection method according to claim 12, characterized in that it consists in maintaining, by means a locking member (37), said end piece (21) in a position such that the introduction of said knife (24) between said blades (5, 6) is blocked. Procédé de raccordement électrique selon la revendication 13, caractérisé en ce qu'il consiste à charger élastiquement ledit organe (37) vers une position de verrouillage dudit embout (21).Electrical connection method according to claim 13, characterized in that it consists in loading elastically said member (37) to a locking position of said end piece (21).
EP99420084A 1998-04-03 1999-04-01 Device and method for electrical connection between a bus bar and a conductor and an electrical connection assembly comprising such a device Withdrawn EP0948087A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804410A FR2777132B1 (en) 1998-04-03 1998-04-03 DEVICE AND METHOD FOR ELECTRICAL CONNECTION BETWEEN A BAR AND A CONDUCTOR AND ELECTRICAL CONNECTION ASSEMBLY INCLUDING SUCH A DEVICE
FR9804410 1998-04-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818021A1 (en) * 2000-12-08 2002-06-14 Seifel Sa Conductor bar slab held switchable electrical cable connector having input/output cable connections base plate held connected using knife section parallel conductor bar section.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1554705A (en) * 1966-10-07 1969-01-24
DE3418355A1 (en) * 1984-05-17 1985-11-28 Siemens AG, 1000 Berlin und 8000 München Arrangement of electrical telecommunications apparatuses in a rack
EP0466043A2 (en) * 1990-07-09 1992-01-15 ABBPATENT GmbH Distribution installation with at least two rows of electrical apparatus of a narrow type
FR2715775A1 (en) * 1994-01-28 1995-08-04 Mecelec Ind Modular electrical connection for multiple cable connections
FR2731847A3 (en) * 1995-03-14 1996-09-20 Mecelec Ind Connector for branch connection on electrical supply rail

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1554705A (en) * 1966-10-07 1969-01-24
DE3418355A1 (en) * 1984-05-17 1985-11-28 Siemens AG, 1000 Berlin und 8000 München Arrangement of electrical telecommunications apparatuses in a rack
EP0466043A2 (en) * 1990-07-09 1992-01-15 ABBPATENT GmbH Distribution installation with at least two rows of electrical apparatus of a narrow type
FR2715775A1 (en) * 1994-01-28 1995-08-04 Mecelec Ind Modular electrical connection for multiple cable connections
FR2731847A3 (en) * 1995-03-14 1996-09-20 Mecelec Ind Connector for branch connection on electrical supply rail

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2818021A1 (en) * 2000-12-08 2002-06-14 Seifel Sa Conductor bar slab held switchable electrical cable connector having input/output cable connections base plate held connected using knife section parallel conductor bar section.

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Publication number Publication date
FR2777132B1 (en) 2000-05-19
FR2777132A1 (en) 1999-10-08

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