FR2786930A1 - Triphase/monophase electrical circuit protection module connection technique having plate mounted in line modules with equilibrium obtained using varying connection position. - Google Patents

Abstract

The electrical module technique has modules (6) mounted in a plate support (4). In order to provide equilibrium of the separated module parts, the connection point (2) is varied in position, rather than having to move the position of the modules themselves.

Description

4 * 2786930

  PROTECTION MODULE CONNECTION DEVICE

  AND / OR SECTIONING FOR STAR POINT FOR

ELECTRICAL NETWORK

  The present invention relates to a device for connecting protection and / or sectioning modules for a star point for an electrical network. The invention can also be applied in the context of single-phase and / or three-phase connections on a

column distributor.

  FIG. 1 represents an electrical diagram, according to the prior art, illustrating three single-phase connections and a three-phase connection on a star point for the electrical network. In a manner known per se, each single-phase connection is made, on the one hand, by a first conductor connected to the neutral N, via a module 2 constituted, in the example illustrated, by a triple block for sectioning the neutral, and on the other hand, by a second conductor connected to one of the PHI, PH2 or PH3 phases, also via a module 2 constituted in this case by a fuse holder. The three-phase connection is carried out, on the one hand, by a first conductor connected to the neutral, also via a module 2 which is in this case constituted by a simple block for isolating the neutral, and on the other hand, by three connected conductors each to one of the phases PH1, PH2, or PH3, also via to a

  module 2 consisting of a fuse holder.

  As can be seen in this figure, the wiring of single-phase connections requires crossing the conductors connected to neutral and those connected to phases, taking into account the situation of the three neutral connection points grouped together on the triple neutral block. This triple block has no means of separating the different outputs from each other. In addition, standard NFC14 100 requires the neutral conductor to be cut off at the start of the connection and, for operational safety reasons, it is recommended that the neutral disconnect block be placed next to the fuse carrier protection. These requirements can be met, for example, by the arrangement of the connections illustrated diagrammatically in FIGS. 2 and 3. The arrangement 2 allows four single-phase connections to be made simultaneously, or two single-phase connections and one three-phase connection, or even three single-phase connections with one reserve to replace one

  single-phase connection by a three-phase connection.

  However, with this arrangement, the number of possible connections is too low to supply the most frequent building levels. This problem can be solved by the arrangement of FIGS. 3a to 3c illustrating a variant of that of FIG. 2. These arrangements make it possible to make either six single-phase connections, or four single-phase connections and one three-phase connection, or five single-phase connections with a reserve for replace

  a single-phase connection by a three-phase connection.

  In this last arrangement, in order to make the wiring as simple as possible, a three-phase connection can be placed either on the left or on the right, like this

  is illustrated respectively in Figures 3a and 3b.

  However, there is a problem of space which limits the number of modules 2 taking into account the width

of each of said modules.

  In addition, the arrangements illustrated in FIGS. 2 and 3 do not make it possible to resolve the difficulties of connection of the different neutral poles or of the different phases, since their respective geometric positions do not correspond to the position of the pole of the terminal block and of branch to which they must be connected. Another problem encountered in the known connection arrangements comes from the fact that the protection and / or sectioning modules 2 must be moved in order to balance the distribution of the electric power supplied via the point

  of star for electrical network.

  The object of the invention is to overcome the

disadvantages above.

  The device according to the invention is characterized in that it comprises a support plate intended to produce a plurality of distinct configurations of single-phase and / or three-phase electrical connections between, on the one hand, said protection and / or sectioning modules and , on the other hand, the poles of said junction / derivation block so that in each of said configurations, said electrical connections are adapted to the need for distribution via the star point of the electrical network as well as to the position of each module protection and / or sectioning with respect to that of the pole of the block

  junction / branch to which it must be connected.

  The device according to the invention thus makes it possible to create as many positions of connection points of the protection / isolation modules as there are polarity in

  satisfactory safety and security conditions.

  According to a preferred embodiment of the invention, said support plate comprises a plurality of sectors each comprising a plurality of connection points each corresponding to a

  given polarity of the electrical network.

  Preferably, said support plate has a sandwich structure formed by superposition of a plurality of flat conductive plates arranged between two insulating plates and insulated from each other, each of said conductive plates being cut and folded so as to make the electrical connections. between at least one protection and / or isolation module and one of the

  poles of said terminal / branch block.

  Other features and benefits of

  the invention will emerge from the description which goes

  follow, taken by way of nonlimiting example, with reference to the appended figures in which: - Figures 1, 2 schematically illustrate electrical connections to a star point for electrical network according to the prior art; - Figure 3 shows an alternative embodiment of Figure 2; - Figure 4 shows a particular embodiment of the invention; - Figure 5 shows a partially sectional view of a particular embodiment of a

support plate according to the invention.

  FIG. 4 illustrates a particular example of a device for connecting a protection module and / or

  switch 2 for column distributors.

  This device comprises a support plate 4 intended to produce a plurality of distinct configurations of single-phase and / or three-phase electrical connections between, on the one hand, said modules 2 and,

  on the other hand, the poles of the junction / derivation block.

  In each of said configurations, the electrical connections are made according to the need for distribution via the star point for the electrical network as well as the respective positions of each module 2 relative to the pole of the block of

  junction / branch to which it must be connected.

  Thus, to balance the distribution of the electric power supplied via the star point for the electrical network, it is not necessary to move the protection and / or sectioning modules 2, it suffices to move the electrical connection point of said modules. modules 2 on the plate

support 4.

  FIG. 5 illustrates a particular embodiment of the support plate 4. The latter comprises six sectors 10 each comprising four connection points 12 each corresponding to one of the polarities N, PH1, PH2 or PH3 of the electrical distribution network. In a particular embodiment, said support plate 4 has a sandwich structure formed by superposition of a first flat conductive plate 14 and a second flat conductive plate 16 arranged between a first insulating plate 18 and a second insulating plate 20. Said conductive plates 14 and 16 are electrically insulated from each other by means

  an additional insulating layer 22.

  Each of said conductive plates 14 and 16 may consist of a copper strip which is cut and folded in the shape which allows the desired electrical connections to be made between a protection and / or sectioning module and one of the poles of said block junction / bypass. It is understood that any other method of electrical connection between the protection and / or sectioning modules and one of the poles of said junction / derivation block can be

  used without departing from the scope of the invention.

  This electrical connection can, for example, be

carried out by wiring.

  According to another embodiment of the invention not shown, said support plate 4 is constituted by printed circuit which can be mono or

multilayer.

Claims (5)

  1. Device for electrical connection of modules (2) for fuse protection and / or neutral sectioning to a junction / bypass block for a star point for an electrical network, characterized in that it comprises a support plate (4) intended to produce a plurality of distinct configurations of single-phase and / or three-phase electrical connections between, on the one hand, said modules (2) and, on the other hand, the poles of said junction / branch block so that in each of said configurations, said electrical connections are adapted to the need for distribution via the star point as well as to the position of each module (2) relative to that of the pole of the junction / branch block to which it must be connected. 2. Device according to claim 1, characterized in that said support plate (4) comprises a plurality of sectors (10) each comprising a plurality of connection points (12) each corresponding to a given polarity of the electrical network. 3. Device according to claim 2 characterized in that the support plate (4) has a sandwich structure formed by superposition of a plurality of flat conductive plates (14; 16) arranged between two insulating plates (18; 20) and insulated relative to each other, each of said conductive plates (14; 16) being cut and folded so as to make the electrical connections between at least one protection and / or sectioning module (2) and one of the poles of said block junction / bypass. 4. Device according to claim 2, characterized in that the electrical connection between said protection and / or sectioning modules (2) and the poles of said junction / derivation block is carried out by wiring.   5. Device according to one of claims 1 to   4, characterized in that it is used to make single-phase and / or three-phase connections on a column distributor.