EP0231310B1 - Prefabricated electric connection device to link on a set of bars - Google Patents

Prefabricated electric connection device to link on a set of bars Download PDF

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Publication number
EP0231310B1
EP0231310B1 EP86904840A EP86904840A EP0231310B1 EP 0231310 B1 EP0231310 B1 EP 0231310B1 EP 86904840 A EP86904840 A EP 86904840A EP 86904840 A EP86904840 A EP 86904840A EP 0231310 B1 EP0231310 B1 EP 0231310B1
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EP
European Patent Office
Prior art keywords
bars
intermediate connection
bar
connection elements
fixed
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.)
Expired - Lifetime
Application number
EP86904840A
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German (de)
French (fr)
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EP0231310A1 (en
Inventor
Daniel Jean Chapotier
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FOURNITURES ELECTRO TECHNIQUES
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FOURNITURES ELECTRO TECHNIQUES
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Publication date
Priority claimed from FR8511720A external-priority patent/FR2585890B1/en
Priority claimed from FR8605549A external-priority patent/FR2597675B1/en
Application filed by FOURNITURES ELECTRO TECHNIQUES filed Critical FOURNITURES ELECTRO TECHNIQUES
Publication of EP0231310A1 publication Critical patent/EP0231310A1/en
Application granted granted Critical
Publication of EP0231310B1 publication Critical patent/EP0231310B1/en
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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
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/161—Details
    • H01R25/162—Electrical connections between or with rails or bus-bars

Definitions

  • the present invention relates to a prefabricated electrical connection device for connection to a busbar.
  • connection devices Is commonly used for the distribution of electrical energy, distribution cabinets containing busbars associated with the respective phases and to which are connected the user devices or ensuring the protections of the divisional circuits.
  • Known connection devices have the drawback that they require long periods of time for connection to a user device and that they entail a high wiring cost.
  • Patent GB-A-1 370 463 describes a set of test terminals formed by a stack of conductive bars separated from each other by layers of insulating material.
  • blind holes making it possible to expose the conductive bars.
  • fuses held in place by boxes each provided with a test terminal.
  • connection device for the conductors of several electrical circuits intended to connect the bars of two busbars separated by air spaces.
  • the present invention aims to remedy the drawbacks of the prior art by providing a connection device of particularly simple structure thanks to which the connection of a user device is considerably simplified and can be carried out in a short period of time.
  • this prefabricated electrical connection device for connection to a set of bars extending parallel to one another is characterized in that the bars which are parallel to one another, separated by air gaps, are located one behind the other. others, in a direction perpendicular to the planes of the bars, intermediate connection members each provided with an external insulating sheath, are fixed respectively to the bars and extend forward, perpendicular to these bars, the bars are pierced with holes aligned through which extend the intermediate connection members fixed, at their rear ends, to the bars situated behind the first bar, so that the front end of the connection member intermediate fixed to the first bar, and the anterior ends of the intermediate connection members fixed to the other bars from the second happen to be all located in front of the first bar, in the same plane perpendicular to the bars.
  • the perforations of the bars are of such a size that the value of the admissible intensity is only very little affected by this passage.
  • the front ends of the intermediate connection members are advantageously located in the same plane parallel to the planes of the bars.
  • the invention also relates to devices for protection against short-circuit currents, in particular in electrical energy distribution installations.
  • the user devices are generally connected to the connection cabinets containing busbars associated with the respective phases of the network, by means of protection devices.
  • the protection devices of the divisional circuits are calculated to provide protection against short-circuit overcurrents generated in the network, for example following an accidental short-circuit caused by the breakdown of a user device, by assimilating the paths of current in the connections of the distribution cabinet to short-circuits without any impedance.
  • protective devices such as circuit breakers must be designed to withstand very large currents, which requires a corresponding dimensioning of the elements which constitute them, in particular conductors and movable members, arc extinguishing means and the like.
  • the electrical connection device of the type defined above in addition to being of a particularly simple construction compared to known connection devices and also simplifies the connection operations between the network and the user devices, has a surprising property.
  • connection device when it is connected between the network and a user device, performs the function of short-circuit current limiter.
  • the invention therefore also relates to an electrical connection device of the type defined above, characterized in that it constitutes an overcurrent limiter.
  • Figure 1 is a side view of an electrical connection device with busbar according to the invention.
  • Figure 2 is a partial elevational view of the connection device of Fig 1, the bars being devoid of the intermediate connection members.
  • Figure 3 is a cross-sectional view, on a larger scale, of a connector of the rapid type.
  • Figure 4 is an elevational view of the connector in Figure 3.
  • FIG. 5 is a plan view of the connector of FIG. 4.
  • FIG. 6 is an electrical diagram showing the function of overcurrent limiter of the electrical connection device according to the invention.
  • the electrical connection device which is shown in Figures 1 and 2, is intended to supply electrical current to any user device which can be connected to a set of vertical busbars in any number, for example three in number. the example described, namely bars 1, 2 and 3.
  • the bars separated by air gaps extend parallel to one another and they are arranged one behind the other, bar 1 being the front bar of the succession of bars.
  • the electrical connection of the bars 1, 2, 3 with any user electrical appliance, not shown, is effected by means of respective intermediate connection members 4, 5 and 6 which extend horizontally, that is to say perpendicularly on the plans of bars 1, 2 and 3.
  • Each intermediate connection member 4, 5, 6 is fixed, at its rear end, to the corresponding bar 1, 2, 3, by means of a screw 7.
  • This screw 7 passes through a hole 8, of small diameter, drilled in the bar and it is screwed dan a thread provided in the rear end of an inner tube 9 of an electrically conductive material, for example brass, of the intermediate connection member.
  • This conductive tube 9 is covered with a barrel of insulating material 11 which constitutes a protective sheath.
  • each of the connection members intermediate 4, 5, 6 carries, at its anterior end, a connection member 12, of any known type, which provides the electrical connection directly upstream of the user device.
  • the first intermediate connection member 4 which is fixed to the first bar or anterior bar 1, extends forward, from the latter, on which it is held blocked by the screw 7.
  • the second intermediate connection member 5 which is integral with the second bar 2 and which is located under the first intermediate connection member 4, also extends forwards and it passes through a hole 13 drilled in the first front bar 1 below the hole 8 for fixing the first intermediate connection member 4.
  • This hole 13 has a larger diameter than that of the hole 8 and it corresponds to the external diameter of the insulating barrel 11.
  • the second intermediate connection member 5 has a length greater than that of the first intermediate connection member 4, by the distance between the first two bars 1,2 so that its anterior end, that is to say its connection member 12 is situated in the vertical plane parallel to the bars 1, 2, 3 passing through the front connecting member 12 of the first intermediate connecting member 4.
  • the third intermediate connecting member 6 which is the lowest, is fixed, at its rear end, to the third bar 3, by means of a screw 7 passing through a hole 8, and it extends to through the first and second bars 1 and 2, passing through holes 13 horizontally aligned with each other and with the hole 8 drilled in the third bar 3.
  • the third intermediate connection member 6 has a length greater than that of the second intermediate member 5 of the distance between the second and third bars 2,3, so that its front connecting member 12 is located below the connecting members 12 of the two other intermediate connecting members 4 and 5 which are located above from him.
  • the three connecting members 12 provided at the front ends of the three intermediate connecting or branching members 4, 5 and 6 are located one above the other, at the front of the device , which allows easy access, for the installation of connection cables.
  • FIGS 3 to 5 illustrate an embodiment of a connector of the rapid type which can be put in place by a shock, by means of a small mallet for example.
  • This connector is suitable for relatively low currents, up to around 60 amps.
  • This connector consists of a brass latch 14 of substantially omega shape, to which a hardened steel clip 15 ensures its pinching effect and gives it its quality of contact.
  • This latch 14 is engaged by pinching on a bar 16 of rectangular cross section.
  • the connector is connected to a flexible wire 17 of appropriate cross section.
  • the connector also comprises an overmolded external part 18 which has an upper surface 19 admitting a racking-in shock.
  • a brass latch 14 has the advantage that it is made in one piece from strip metal and that it only requires shearing, without causing falls. It can thus be obtained in large series with a very low cost.
  • the connector described above allows a reduction considerable wiring time and ensures perfect technology.
  • the conductors 1, 2 and 3 have several series of holes 8, 13 so that the electrical connection device makes it possible to connect the conductors in the form of bars 1 to 3 as many user devices that conductors 1 to 3 have series of holes.
  • the conductors 1 to 3 all similar to the conductor 1, from a conductive bar, made of copper for example in which are drilled holes 8 of small diameter and holes 13 of larger diameter so that 'to a hole 8 of small diameter succeed two holes 13 of larger diameter and to cut the conductors 1 to 3 in the bar so that the first series of holes located at the upper end of the first conductor 1 is formed of a hole 8 of small diameter followed by two holes 13, of larger diameter, the corresponding series of holes of the second conductor 2 being formed of a hole 13 of larger diameter followed by a hole 8 of small diameter and a hole 13 of larger diameter and the corresponding series of holes of the third bar 3 being formed of two holes 13 of larger diameter followed by a hole 8 of small diameter
  • connection device of the invention can thus use for the three conductors 1 to 3 a standard bar which further simplifies the manufacture of the connection device of the invention. Furthermore, such an arrangement makes it possible to connect user devices on either side of the connection device, which may be advantageous for the installation of the equipment to be supplied.
  • the conductors 1, 2 and 3 are bare and arranged at distances such that their mutual insulation is ensured by air without it being necessary to interpose between the conductors of elements of separation of insulating material.
  • connection device according to the invention has good mechanical resistance, in particular to electrodynamic forces in comparison with connection devices of conventional construction.
  • FIG. 6 there is shown the electrical diagram of a supply circuit of a user device connected to the network via an electrical connection device according to the invention.
  • the electrical connection device 20 according to the invention is connected to the three-phase network as described with reference to FIGS. 1 and 2.
  • a user device 21 is connected to the connection device via a circuit breaker 22.
  • the Applicants have found that the device of the invention has a high impedance in the event of a short circuit caused on the user device.
  • connection device 20 was up to four times lower than the short-circuit current of which the circuit would be the seat if a conventional electrical distribution device was used.
  • connection device of the invention which manifests itself during the appearance of transient phenomena such as the production of a short circuit caused by the appearance of an operating anomaly in the user device 21.
  • This increased impedance of the electrical connection device according to the invention is due to the original construction of this device, and probably caused by the crossovers between the connection bars with the network and the intermediate connection members which pass through them.
  • connection device which has just been described opens up very interesting prospects in the field of the reduction of the dimensions of the protection device to be inserted in the circuit of use between the connection device and the or electrical charges connected to the sector through it.
  • the electrical connection device according to the invention provides a significant limitation of the short-circuit currents makes it possible to place between the device and the loads a protection device of reduced power and therefore of lower cost, which makes it possible to considerably reduce the cost price of supply installations.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

Prefabricated electric connection device for link on a set of bars which extend parallel to each other. Said device is characterized in that the bars (1, 2, 3) parallel between each other are situated one after the other in a direction perpendicular to the planes of the bars. Intermediate connection members (4, 5, 6) each provided with an external isolating sheath (11) are respectively fixed to the bars (1, 2, 3) and extend forwards perpendicularly to said bars (1, 2, 3); the bars are drilled with aligned holes (13) through which extend, with interposition of an isolating sheath (11), the intermediate connection members (5, 6) fixed at their back ends to the bars (2, 3) situated behind the first bar (1).

Description

La présente invention concerne un dispositif de connexion électrique préfabriqué de liaison sur un jeu de barres.The present invention relates to a prefabricated electrical connection device for connection to a busbar.

On utilise couramment, pour la distribution de l'énergie électrique, des armoires de distribution contenant des jeux de barres associés aux phases respectives et auxquelles sont raccordés les dispositifs utilisateurs ou assurant les protections des circuits divisionnaires. Les dispositifs de connexion connus présentent l'inconvénient qu'ils exigent des périodes de temps importantes pour le raccordement à un appareil utilisateur et qu'ils entraînent un coût de câblage élevé.Is commonly used for the distribution of electrical energy, distribution cabinets containing busbars associated with the respective phases and to which are connected the user devices or ensuring the protections of the divisional circuits. Known connection devices have the drawback that they require long periods of time for connection to a user device and that they entail a high wiring cost.

On a décrit au brevet GB-A-1 370 463, un ensemble de bornes de test formé d'un empilement de barres conductrices séparées les unes des autres par des couches de matière isolante.Patent GB-A-1 370 463 describes a set of test terminals formed by a stack of conductive bars separated from each other by layers of insulating material.

Dans l'empilement de barres conductrices et de couches isolantes sont ménagés à partir d'une même face, des trous borgnes permettant de mettre à nu les barres conductrices. Dans les trous borgnes sont engagés des fusibles maintenus en place par des boîtiers pourvus chacun d'une borne de test.In the stack of conductive bars and insulating layers are formed from the same face, blind holes making it possible to expose the conductive bars. In the blind holes are engaged fuses held in place by boxes each provided with a test terminal.

On connaît également d'après le FR-A-1 284 699, un dispositif de connexion pour les conducteurs de plusieurs circuits électriques destinés à relier entre elles les barres de deux jeux de barres séparées par des espaces d'air.Also known from FR-A-1 284 699 is a connection device for the conductors of several electrical circuits intended to connect the bars of two busbars separated by air spaces.

La présente invention vise à remédier aux inconvénients de la technique antérieure en procurant un dispositif de connexion de structure particulièrement simple grâce à laquelle la connexion d'un appareil utilisateur est considérablement simplifiée et peut être effectéue dans une courte période de temps.The present invention aims to remedy the drawbacks of the prior art by providing a connection device of particularly simple structure thanks to which the connection of a user device is considerably simplified and can be carried out in a short period of time.

A cet effet, ce dispositif de connexion électrique préfabriqué de liaison sur un jeu de barres s'étendant parallèlement tes unes aux autres, est caractérisé en ce que les barres parallèles entre elles, séparées par des intervalles d'air sont situées les unes derrière les autres, dans une direction perpendiculaire aux plans des barres, des organes de connexion intermédiaires pourvus chacun d'une gaine externe isolante, sont fixés respectivement aux barres et s'étendent vers l'avant, perpendiculairement à ces barres, les barres sont percées de trous alignés à travers lesquels s'étendent les organes de connexion intermédiaires fixés, à leurs extrémités postérieures, aux barres situées en arrière de la première barre, si bien que l'extrémité antérieure de l'organe de connexion intermédiaire fixé à la première barre, et les extrémités antérieures des organes de connexion intermédiaires fixés aux autres barres à partir de la deuxième se trouvent être toutes situées en avant de la première barre, dans un même plan perpendiculaire aux barres.To this end, this prefabricated electrical connection device for connection to a set of bars extending parallel to one another is characterized in that the bars which are parallel to one another, separated by air gaps, are located one behind the other. others, in a direction perpendicular to the planes of the bars, intermediate connection members each provided with an external insulating sheath, are fixed respectively to the bars and extend forward, perpendicular to these bars, the bars are pierced with holes aligned through which extend the intermediate connection members fixed, at their rear ends, to the bars situated behind the first bar, so that the front end of the connection member intermediate fixed to the first bar, and the anterior ends of the intermediate connection members fixed to the other bars from the second happen to be all located in front of the first bar, in the same plane perpendicular to the bars.

Les perforations des barres sont d'une dimension telle que la valeur de l'intensité admissible n'est que très peu affectée par ce passage.The perforations of the bars are of such a size that the value of the admissible intensity is only very little affected by this passage.

Suivant une caractéristique complémentaire de l'invention les extrémités antérieures des organes de connexion intermédiaires sont avantageusement situées dans un même plan parallèle aux plans des barres.According to an additional characteristic of the invention, the front ends of the intermediate connection members are advantageously located in the same plane parallel to the planes of the bars.

L'invention concerne également les dispositifs de protection contre les courants de court-circuit notamment dans les installations de distribution d'énergie électrique.The invention also relates to devices for protection against short-circuit currents, in particular in electrical energy distribution installations.

Les dispositifs utilisateurs sont généralement raccordés aux armoires de connexion contenant des jeux de barres associées aux phases respectives du réseau, par l'intermédiaire de dispositifs de protection.The user devices are generally connected to the connection cabinets containing busbars associated with the respective phases of the network, by means of protection devices.

Les dispositifs de protection des circuits divisionnaires sont calculés pour assurer une protection contre les surintensités de court-circuit engendrées dans le réseau, par exemple par suite d'un court-circuit accidentel provoqué par la panne d'un dispositif utilisateur, en assimilant les trajets du courant dans les connexions de l'armoire de distribution à des court-circuits dépourvus de toute impédance.The protection devices of the divisional circuits are calculated to provide protection against short-circuit overcurrents generated in the network, for example following an accidental short-circuit caused by the breakdown of a user device, by assimilating the paths of current in the connections of the distribution cabinet to short-circuits without any impedance.

Par conséquent, les dispositifs de protection tels que les disjoncteurs doivent être conçus pour supporter des courants très importants, ce qui nécessite un dimensionnement correspondant des éléments qui les constituent, notamment des conducteurs et des organes mobiles, des moyens d'extinction d'arc et autres.Therefore, protective devices such as circuit breakers must be designed to withstand very large currents, which requires a corresponding dimensioning of the elements which constitute them, in particular conductors and movable members, arc extinguishing means and the like.

Le dispositif de connexion électrique du type défini ci-dessus outre qu'il soit d'une construction particulièrement simple par rapport aux dispositifs de connexion connus et simplifie également les opérations de connexion entre le réseau et les appareils utilisateurs, présente une propriété surprenante.The electrical connection device of the type defined above, in addition to being of a particularly simple construction compared to known connection devices and also simplifies the connection operations between the network and the user devices, has a surprising property.

En effet, les Demandeurs ont constaté que ce dispositif de connexion, lorsqu'il est connecté entre le réseau et un dispositif utilisateur, assure la fonction de limiteur de courant de court-circuit.Indeed, the Applicants have found that this connection device, when it is connected between the network and a user device, performs the function of short-circuit current limiter.

L'invention a donc également pour objet un dispositif de connexion électrique du type défini ci-dessus, caractérisé en ce qu'il constitue un limiteur de surintensités.The invention therefore also relates to an electrical connection device of the type defined above, characterized in that it constitutes an overcurrent limiter.

On décrira ci-après , à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence aux dessins annexés sur lesquels :An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawings in which:

La figure 1 est une vue de profil d'un dispositif de connexion électrique à jeu de barres suivant l'invention.Figure 1 is a side view of an electrical connection device with busbar according to the invention.

La figure 2 est une vue en élévation partielle du dispositif de connexion de la figue 1, les barres étant dépourvues des organes de connexion intermédiaires.Figure 2 is a partial elevational view of the connection device of Fig 1, the bars being devoid of the intermediate connection members.

La figure 3 est une vue en coupe transversale, à plus grande échelle, d'un connecteur du type rapide.Figure 3 is a cross-sectional view, on a larger scale, of a connector of the rapid type.

La figure 4 est une vue en élévation du connecteur de la figure 3.Figure 4 is an elevational view of the connector in Figure 3.

La figure 5 est une vue en plan du connecteur de la figure 4.FIG. 5 is a plan view of the connector of FIG. 4.

La figure 6 est un schéma électrique montrant la fonction de limiteur de surintensités du dispositif de connexion électrique suivant l'invention.FIG. 6 is an electrical diagram showing the function of overcurrent limiter of the electrical connection device according to the invention.

Le dispositif de connexion électrique suivant l'invention qui est représenté sur les figures 1 et 2, est destiné à alimenter en courant électrique un appareil utilisateur quelconque pouvant être raccordé à un jeu de barres verticales en nombre quelconque, par exemple au nombre de trois dans l'exemple décrit à savoir les barres 1, 2 et 3. Les barres séparées par des intervalles d'air s'étendent parallèlement les unes aux autres et elles sont disposées les unes derrière les autres, la barre 1 étant la barre antérieure de la succession de barres. La liaison électrique des barres 1, 2, 3 avec un appareil électrique utilisateur quelconque, non représenté, s'effectue aux moyens d'organes de connexion intermédiaires respectifs 4, 5 et 6 qui s'étendent horizontalement c'est-à-dire perpendiculairement aux plans des barres 1, 2 et 3.The electrical connection device according to the invention which is shown in Figures 1 and 2, is intended to supply electrical current to any user device which can be connected to a set of vertical busbars in any number, for example three in number. the example described, namely bars 1, 2 and 3. The bars separated by air gaps extend parallel to one another and they are arranged one behind the other, bar 1 being the front bar of the succession of bars. The electrical connection of the bars 1, 2, 3 with any user electrical appliance, not shown, is effected by means of respective intermediate connection members 4, 5 and 6 which extend horizontally, that is to say perpendicularly on the plans of bars 1, 2 and 3.

Chaque organe de connexion intermédiaire 4, 5, 6 est fixé, à son extrémité postérieure, à la barre correspondante 1, 2, 3, au moyen d'une vis 7. Cette vis 7 traverse un trou 8, de petit diamètre, percé dans la barre et elle est vissée dan un taraudage prévu dans la partie extrême postérieure d'un tube interne 9 en un matériau conducteur de l'électricité, par exemple en laiton, de l'organe de connexion intermédiaire. Ce tube conducteur 9 est recouvert d'un canon en matière isolante 11 lequel constitue une gaine protectrice. Par ailleurs chacun des organes de connexion intermédiaire 4, 5, 6 porte, à son extrémité antérieure, un organe de raccordement 12, de tout type connu, qui assure la liaison électrique directement à l'amont de l'appareil utilisateur.Each intermediate connection member 4, 5, 6 is fixed, at its rear end, to the corresponding bar 1, 2, 3, by means of a screw 7. This screw 7 passes through a hole 8, of small diameter, drilled in the bar and it is screwed dan a thread provided in the rear end of an inner tube 9 of an electrically conductive material, for example brass, of the intermediate connection member. This conductive tube 9 is covered with a barrel of insulating material 11 which constitutes a protective sheath. In addition, each of the connection members intermediate 4, 5, 6 carries, at its anterior end, a connection member 12, of any known type, which provides the electrical connection directly upstream of the user device.

Le premier organe de connexion intermédiaire 4 qui est fixé à la première barre ou barre antérieure 1, s'étend vers l'avant, à partir de cette dernière, sur laquelle il est maintenu bloqué par la vis 7.The first intermediate connection member 4 which is fixed to the first bar or anterior bar 1, extends forward, from the latter, on which it is held blocked by the screw 7.

La deuxième organe de connexion intermédiaire 5 qui est solidaire de la deuxième barre 2 et qui est situé sous le premier organe de connexion intermédiaire 4, s'étend également vers l'avant et il passe à travers un trou 13 percé dans la première barre antérieure 1 en dessous du trou 8 de fixation du premier organe de connexion intermédiaire 4. Ce trou 13 a un diamètre plus grand que celui du trou 8 et il correspond au diamètre externe du canon isolant 11. Le deuxième organe de connexion intermédiaire 5 a une longueur supérieure à celle du premier organe de connexion intermédiaire 4, de la distance entre les deux premières barres 1,2 de manière que son extrémité antérieure, c'est-à-dire son organe de raccordement 12 soit situé dans le plan vertical parallèle aux barres 1, 2, 3 passant par l'organe de raccordement antérieur 12 du premier organe de connexion intermédiaire 4.The second intermediate connection member 5 which is integral with the second bar 2 and which is located under the first intermediate connection member 4, also extends forwards and it passes through a hole 13 drilled in the first front bar 1 below the hole 8 for fixing the first intermediate connection member 4. This hole 13 has a larger diameter than that of the hole 8 and it corresponds to the external diameter of the insulating barrel 11. The second intermediate connection member 5 has a length greater than that of the first intermediate connection member 4, by the distance between the first two bars 1,2 so that its anterior end, that is to say its connection member 12 is situated in the vertical plane parallel to the bars 1, 2, 3 passing through the front connecting member 12 of the first intermediate connecting member 4.

De la même façon le troisième organe de connexion intermédiaire 6, qui est le plus bas, est fixé, à son extrémité postérieure, à la troisième barre 3, au moyen d'une vis 7 traversant un trou 8, et il s'étend à travers les première et deuxième barres 1 et 2, en passant à travers des trous 13 alignés horizontalement entre eux et avec le trou 8 percé dans la troisième barre 3. Le troisième organe de connexion intermédiaire 6 a une longueur supérieure à celle du deuxième organe intermédiaire 5 de la distance entre les deuxième et troisième barres 2,3, de manière que son organe de raccordement antérieur 12 soit situé en dessous des organes de raccordement 12 des deux autres organes de connexion intermédiaires 4 et 5 qui se trouvent au-dessus de lui.In the same way, the third intermediate connecting member 6, which is the lowest, is fixed, at its rear end, to the third bar 3, by means of a screw 7 passing through a hole 8, and it extends to through the first and second bars 1 and 2, passing through holes 13 horizontally aligned with each other and with the hole 8 drilled in the third bar 3. The third intermediate connection member 6 has a length greater than that of the second intermediate member 5 of the distance between the second and third bars 2,3, so that its front connecting member 12 is located below the connecting members 12 of the two other intermediate connecting members 4 and 5 which are located above from him.

On voit que grâce à la disposition qui précède, les trois organes de raccordement 12 prévus aux extrémités antérieures des trois organes de connexion ou de dérivation intermédiaires 4, 5 et 6 sont situés les uns au-dessus des autres, à l'avant du dispositif, ce qui permet d'y accéder aisément, pour la mise en place de câbles de connexion.It can be seen that thanks to the above arrangement, the three connecting members 12 provided at the front ends of the three intermediate connecting or branching members 4, 5 and 6 are located one above the other, at the front of the device , which allows easy access, for the installation of connection cables.

Les figures 3 à 5 illustrent une forme d'exécution d'un connecteur du type rapide qui peut être mis en place par un choc, au moyen d'un petit maillet par exemple. Ce connecteur convient pour des intensités relativement faibles, pouvant aller jusqu'à 60 ampères environ. Ce connecteur est constitué d'un linguet en laiton 14 de forme sensiblement en oméga, auquel un clip en acier trempé 15 assure son effet de pincement et lui confère sa qualité de contact. Ce linguet 14 est engagé par pincement sur une barre 16 de section droite rectangulaire. Le connecteur est relié à un fil souple 17 de section droite approprié. Le connecteur comporte par ailleurs une partie externe surmoulée 18 qui présente une surface supérieure 19 admettant un choc d'embrochage.Figures 3 to 5 illustrate an embodiment of a connector of the rapid type which can be put in place by a shock, by means of a small mallet for example. This connector is suitable for relatively low currents, up to around 60 amps. This connector consists of a brass latch 14 of substantially omega shape, to which a hardened steel clip 15 ensures its pinching effect and gives it its quality of contact. This latch 14 is engaged by pinching on a bar 16 of rectangular cross section. The connector is connected to a flexible wire 17 of appropriate cross section. The connector also comprises an overmolded external part 18 which has an upper surface 19 admitting a racking-in shock.

L'utilisation d'un linguet en laiton 14 offre l'avantage qu'il est réalisé d'une seule pièce dans du métal en bande et qu'il ne nécessite que des cisaillages, sans entraîner de chutes. Il peut être ainsi obtenu en grande série avec un coût très modique. Le connecteur décrit ci-dessus permet une diminution considérable des temps de câblage et il assure une parfaite technologie.The use of a brass latch 14 has the advantage that it is made in one piece from strip metal and that it only requires shearing, without causing falls. It can thus be obtained in large series with a very low cost. The connector described above allows a reduction considerable wiring time and ensures perfect technology.

En se reférant à nouveau à la figure 2, on voit que les conducteurs 1, 2 et 3 présentent plusieurs séries de trous 8, 13 de sorte que le dispositif de connexion électrique permet de connecter aux conducteurs en forme de barres 1 à 3 autant d'appareils utilisateurs que les conducteurs 1 à 3 comportent de séries de trous.Referring again to FIG. 2, it can be seen that the conductors 1, 2 and 3 have several series of holes 8, 13 so that the electrical connection device makes it possible to connect the conductors in the form of bars 1 to 3 as many user devices that conductors 1 to 3 have series of holes.

Il est avantageux de réaliser les conducteurs 1 à 3, tous semblables au conducteur 1, à partir d'une barre conductrice, en cuivre par exemple dans laquelle sont percés des trous 8 de petit diamètre et des trous 13 de plus grand diamètre de manière qu'à un trou 8 de petit diamètre succèdent deux trous 13 de plus grand diamètre et de découper les conducteurs 1 à 3 dans la barre de manière que la première série de trous située à l'extrémité supérieure du premier conducteur 1 soit formée d'un trou 8 de petit diamètre suivi de deux trous 13, de plus grand diamètre, la série de trous correspondante du second conducteur 2 étant formée d'un trou 13 de plus grand diamètre suivi d'un trou 8 de petit diamètre et d'un trou 13 de plus grand diamètre et la série de trous correspondante de la troisième barre 3 étant formée de deux trous 13 de plus grand diamètre suivis d'un trou 8 de petit diamètreIt is advantageous to make the conductors 1 to 3, all similar to the conductor 1, from a conductive bar, made of copper for example in which are drilled holes 8 of small diameter and holes 13 of larger diameter so that 'to a hole 8 of small diameter succeed two holes 13 of larger diameter and to cut the conductors 1 to 3 in the bar so that the first series of holes located at the upper end of the first conductor 1 is formed of a hole 8 of small diameter followed by two holes 13, of larger diameter, the corresponding series of holes of the second conductor 2 being formed of a hole 13 of larger diameter followed by a hole 8 of small diameter and a hole 13 of larger diameter and the corresponding series of holes of the third bar 3 being formed of two holes 13 of larger diameter followed by a hole 8 of small diameter

On peut ainsi utiliser pour les trois conducteurs 1 à 3 une barre standard ce qui simplifie encore la fabrication du dispositif de connexion de l'invention. Par ailleurs un tel agencement permet de brancher des appareils utilisateurs de part et d'autre du dispositif de connexion ce qui peut être intéressant pour l'implantation des appareillages à alimenter.One can thus use for the three conductors 1 to 3 a standard bar which further simplifies the manufacture of the connection device of the invention. Furthermore, such an arrangement makes it possible to connect user devices on either side of the connection device, which may be advantageous for the installation of the equipment to be supplied.

Dans le dispositif de connexion suivant l'invention les conducteurs 1, 2 et 3 sont nus et disposés à des distances telles que leur isolation mutuelle est assurée par l'air sans qu'il soit nécessaire d'interposer entre les conducteurs d'éléments de séparation en matière isolante.In the connection device according to the invention, the conductors 1, 2 and 3 are bare and arranged at distances such that their mutual insulation is ensured by air without it being necessary to interpose between the conductors of elements of separation of insulating material.

Enfin la présence des organes de connexions intermédiaires traversant les conducteurs 1, 2 et 3 assure au dispositif de connexion suivant l'invention une bonne tenue mécanique notamment aux efforts électrodynamiques en comparaison avec les dispositifs de connexion de construction classique.Finally, the presence of the intermediate connection members passing through the conductors 1, 2 and 3 ensures that the connection device according to the invention has good mechanical resistance, in particular to electrodynamic forces in comparison with connection devices of conventional construction.

Sur la figure 6 on a représenté le schéma électrique d'un circuit d'alimentation d'un dispositif utilisateur connecté au réseau par l'intermédiaire d'un dispositif de connexion électrique suivant l'invention.In Figure 6 there is shown the electrical diagram of a supply circuit of a user device connected to the network via an electrical connection device according to the invention.

Le dispositif de connexion électrique 20 suivant l'invention est connecté au réseau triphasé de la manière décrite en référence aux Fig. 1 et 2.The electrical connection device 20 according to the invention is connected to the three-phase network as described with reference to FIGS. 1 and 2.

Un dispositif utilisateur 21 est connecté au dispositif de connexion par l'intermédiaire d'un disjoncteur 22. Les Demandeurs ont constaté que le dispositif de l'invention présente une impédance importante en cas de court-circuit provoqué sur le dispositif utilisateur.A user device 21 is connected to the connection device via a circuit breaker 22. The Applicants have found that the device of the invention has a high impedance in the event of a short circuit caused on the user device.

On a pu notamment constater que le courant de court-circuit en aval du dispositif de connexion 20 était jusqu'à quatre fois inférieur au courant de court-circuit dont le circuit serait le siège si l'on utilisait un dispositif de distribution électrique classique.In particular, it has been observed that the short-circuit current downstream of the connection device 20 was up to four times lower than the short-circuit current of which the circuit would be the seat if a conventional electrical distribution device was used.

Les Demandeurs attribuent ce phénomène à une impédance importante du dispositif de connexion de l'invention qui se manifeste lors de l'apparition de phénomènes transitoires tels que la production d'un court-circuit provoqué par l'apparition d'une anomalie de fonctionnement dans le dispositif utilisateur 21.The Applicants attribute this phenomenon to a high impedance of the connection device of the invention which manifests itself during the appearance of transient phenomena such as the production of a short circuit caused by the appearance of an operating anomaly in the user device 21.

Cette impédance accrue du dispositif de connexion électrique suivant l'invention est due à la construction originale de ce dispositif, et provoquée vraisemblablement par les croisements entre les barres de connexion avec le réseau et les organes de connexion intermédiaires qui les traversent.This increased impedance of the electrical connection device according to the invention is due to the original construction of this device, and probably caused by the crossovers between the connection bars with the network and the intermediate connection members which pass through them.

Par conséquent, l'emploi du dispositif de connexion électrique qui vient d'être décrit ouvre des perspectives très intéressantes dans le domaine de la réduction des dimensions du dispositif de protection à insérer dans le circuit d'utilisation entre le dispositif de connexion et la ou les charges électriques connectées au secteur par son intermédiaire.Consequently, the use of the electrical connection device which has just been described opens up very interesting prospects in the field of the reduction of the dimensions of the protection device to be inserted in the circuit of use between the connection device and the or electrical charges connected to the sector through it.

En effet, le fait que le dispositif de connexion électrique suivant l'invention assure une limitation importante des courants de court-circuit permet de placer entre le dispositif et les charges un dispositif de protection de puissance réduite et par conséquent d'un moindre coût, ce qui permet de réduire de façon considérable le prix de revient des installations d'alimentation.Indeed, the fact that the electrical connection device according to the invention provides a significant limitation of the short-circuit currents makes it possible to place between the device and the loads a protection device of reduced power and therefore of lower cost, which makes it possible to considerably reduce the cost price of supply installations.

Claims (7)

  1. Prefabricated electric connection device for connection to a set of bars extending parallel to one another, characterised in that the bars (1, 2, 3) which are parallel to one another and separated by air gaps, are located one behind the other in a direction perpendicular to the planes of the bars, intermediate connection elements (4, 5, 6), each provided with an external insulating sheath (11), are respectively fixed to the bars (1, 2, 3) and extend perpendicular to said bars (1, 2, 3), which have aligned holes (13) through which extend the intermediate connection elements (5, 6) fixed, at their rear ends, to the bars (2, 3) located to the rear of the first bar (1), so that the front end (12) of the intermediate connection element (4) fixed to the first bar (1) and the front ends (12) of the intermediate connection elements (5, 6) fixed to the other bars (2, 3) as from the second one are all located in front of the first bar (1), in the same plane perpendicular to the bars.
  2. Device according to claim 1, characterised in that the front ends (12) of the intermediate connection elements (4, 5, 6) are located in the same plane parallel to the planes of the bars (1, 2, 3).
  3. Device according to claim 2, characterised in that the intermediate connection elements (4, 5, 6) have different lengths, the length difference of two intermediate connection elements fixed to two successive bars being equal to the distance between said two bars.
  4. Device according to any one of the preceding claims, characterised in that each intermediate connecting element (4, 5, 6) is fixed, at its rear end, to the corresponding bar (1, 2, 3) by a screw (7) which extends through a small diameter hole (8) drilled in the bar and which is screwed in a tapped hole provided in the rear end part of an internal tube (9) made from an electrically conductive material, for example brass, of the intermediate connection element, said conductive tube (9) being covered with an insulating material barrel (11) which constitutes a protective sheath.
  5. Device according to claim 4, characterised in that each of the intermediate connection elements (4, 5, 6) carries, at its front end, a connector member (12) which ensures the electric contact with a cable leading to the load.
  6. Device according to either of the claims 4 and 5, characterised in that each bar (1, 2, 3) has successive series of holes formed by a small diameter hole (8) followed by as many holes (13) for the passage of the intermediate connection elements as there are bars, less one.
  7. Prefabricated electric connection device according to any one of the claims 1 to 6, characterised in that it constitutes a limiter of short-circuit excess currents produced in a load (21) connected to the supply network by means of said device (20).
EP86904840A 1985-07-31 1986-07-31 Prefabricated electric connection device to link on a set of bars Expired - Lifetime EP0231310B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8511720 1985-07-31
FR8511720A FR2585890B1 (en) 1985-07-31 1985-07-31 PREFABRICATED ELECTRICAL CONNECTION DEVICE FOR CONNECTION TO A SET OF BARS
FR8605549 1986-04-17
FR8605549A FR2597675B1 (en) 1986-04-17 1986-04-17 PROTECTION AGAINST SHORT CIRCUIT CURRENTS.

Publications (2)

Publication Number Publication Date
EP0231310A1 EP0231310A1 (en) 1987-08-12
EP0231310B1 true EP0231310B1 (en) 1992-07-29

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Application Number Title Priority Date Filing Date
EP86904840A Expired - Lifetime EP0231310B1 (en) 1985-07-31 1986-07-31 Prefabricated electric connection device to link on a set of bars

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US (1) US4815985A (en)
EP (1) EP0231310B1 (en)
DE (1) DE3686249T2 (en)
WO (1) WO1987000979A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5805414A (en) * 1996-03-27 1998-09-08 Siemens Energy & Automation, Inc. Neutral tie bar
KR100915778B1 (en) 2000-11-03 2009-09-04 에스엠씨 일렉트리칼 프로덕츠, 인크 Microdrive
US20120255773A1 (en) * 2011-04-06 2012-10-11 Keith Marshall Breakout box
JP2012249472A (en) * 2011-05-30 2012-12-13 Fujitsu Ltd Electronic equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2824901A (en) * 1953-02-02 1958-02-25 Westinghouse Electric Corp Bus duct constructions
US2871285A (en) * 1953-09-04 1959-01-27 Westinghouse Electric Corp Branch bus duct structures
US2946928A (en) * 1957-09-30 1960-07-26 Gen Electric Circuit breaker panelboard
FR1284699A (en) * 1961-01-07 1962-02-16 Manuf D App Electr Luth Connection device for the conductors of several electrical circuits
US3267336A (en) * 1963-05-27 1966-08-16 Ite Circuit Breaker Ltd Cross bus assembly
GB1143603A (en) * 1966-04-14
GB1370463A (en) * 1972-06-29 1974-10-16 British Insulated Callenders Test terminals

Also Published As

Publication number Publication date
DE3686249D1 (en) 1992-09-03
EP0231310A1 (en) 1987-08-12
WO1987000979A1 (en) 1987-02-12
DE3686249T2 (en) 1993-03-11
US4815985A (en) 1989-03-28

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