FR2965675A1 - Electric connection device for use in connection box for electrically connecting individual subscribers, has upstream and downstream connectors equipped with jaws for receiving cutter block of fuse or isolating link - Google Patents

Abstract

The device (3) has an upstream connector (7) connecting a driver of an upstream cable conductor that comes from an electrical supply network. A downstream connector (8) connects a driver of a downstream cable conductor going toward an electric component i.e. electric meter. A connecting terminal connects the upstream cable conductor along a longitudinal shaping direction (X). Another connecting terminal connects the downstream cable conductor according to the direction, where each connector is equipped with a jaw for receiving a cutter block (18) of a fuse (9) or isolating link.

Description

Electrical connection device with fuse or severing bar and branch box comprising such a device.

The invention relates to the field of electrical connections. The invention relates more particularly to a fusible electrical connection device or severing bar comprising an upstream connector for connecting an upstream cable conductor coming from an electrical network, and a downstream connector for connecting a downstream cable conductor going to an electrical equipment such as an electricity meter, the fuse or the sectioning bar being disposed between these upstream and downstream connectors and electrically connected therewith. The invention also relates to a box or an electrical connection terminal comprising devices of this type.

Connecting devices of this type, such as Individual Main Circuit Cutting (IPC), are used for the electrical connection of individual subscribers whose power is typically less than or equal to 36kVA. These devices are used in boxes or terminals for example in property limit in order to be accessible by the energy distributor. There is also this type of devices in collective housing, in a riser technical duct, the French standard NF C 14-100 governing these facilities. Other applications of such devices exist, for example in circuit breaker boxes used in collective connection or for connections of various power generation means. These examples are not exhaustive.

Known connection devices are currently specific to each application or are generally shaped so as to be arranged in a precise arrangement with respect to the upstream and downstream cable conductors to be connected. In addition, known connection devices, in particular in accordance with specifications HN62S35 or HN62S21 of EDF ©, require stripping of the cable conductor. For a connection without stripping EBCP type end caps ("Insulation Perforated Connector Connection Tip" according to the standards of the company EDF ©) are used. However these known tips are not suitable for 2965675 -2

receive a fuse knife or severing bar. These known devices are also poorly adapted to receive a branch connection of a subscriber, whether it is a connection to a second customer consuming energy or energy production means, for example photovoltaic type.

The purpose of the present invention is to overcome the above drawbacks by proposing a new electrical connection device adapted to multiple applications and use configurations. For this purpose, the subject of the invention is an electrical connection device with a fuse or isolating strip comprising an upstream connector for connecting an upstream cable conductor coming from an electrical network, and a downstream connector for connection. a downstream cable conductor to an electrical equipment such as an electric meter, the fuse or the severing bar being disposed between these upstream and downstream connectors and electrically connected thereto, characterized in that the upstream and downstream connectors each comprise a main body provided with at least two connection terminals 20 formed in the same shape of a profile, in cross-section to the longitudinal profiling direction, a first connection terminal being adapted for connection an upstream cable conductor in the longitudinal profiling direction, a second connection terminal being adapted to the connection of a downstream cable conductor in the longitudinal profiling direction, each of the upstream and downstream connectors being further provided with at least one jaw receiving a fuse knife or severing bar.

The upstream and downstream connectors of this device having a body with two connection terminals 30 formed in the same profile shape, in cross section to the longitudinal direction of profiling, it is understood that the manufacture of such connectors will use a community of parts. or material (reduction of diversity and production costs). In addition, each connector having both types of terminals, it is particularly suitable for connecting an upstream cable conductor 2965675 -3

or connecting a downstream cable connector or connecting these two types of cable conductors, noting that these two types of cable conductors may differ from each other in their cross-section. An upstream cable conductor typically has a cross section of between 6 and 50 mm 2, while a downstream cable conductor typically has a cross section of between 16 and 25 mm 2. It is noted that the upstream and downstream connectors are very versatile (presence of two connection terminals, reversibility). The connection device according to the invention is therefore versatile, adapted to multiple use configurations and offers excellent interchangeability by having the characteristics of a standard module. The device according to the invention allows for example a branch connection in a very simple and inexpensive way.

According to other advantageous features of the invention, the first connection terminal comprises a first passage in which are provided means for perforating a cable insulation, consisting of at least one protruding edge, in particular consisting of three edges protruding towards the center of the passage. According to still other advantageous features of the invention, the second connection terminal comprises a second passage whose peripheral edge forms a thickness materializing a rib outside the main body. According to still other advantageous features of the invention, the jaw consists of a first contact pad integrally formed with the profiled main body and a second contact pad, in particular consisting of a stamped strip, attached. vis-à-vis the first and fixed on the main body, in particular by screwing.

According to still other advantageous features of the invention, the main body has a generally rectangular shape in cross section to the longitudinal profiling direction, the passage of the first terminal being formed inside said rectangular shape, the 2965675 -4

main body being further shaped so that the first contact pad extends from a short side of the rectangle, especially from the center thereof and that the rib of the second connection terminal extends from a long side of the rectangle. According to still other advantageous features of the invention, the second contact pad is firstly applied against a large side of the main body and fixed on the latter, in particular by screwing, and secondly positioned on the external of the main body via pre-positioning means, in particular an outer edge or rib on which the second contact pad bears, the outer rib being in particular the rib formed by the peripheral edge of the second connection terminal.

According to still other advantageous features of the invention, the upstream connector comprises a clamping screw capable of being displaced towards the passage of the first connection terminal, the screw being introduced into the main body of the upstream connector perpendicular to one face. of which the jaw rises, in particular in a countersunk area 20 shortening the size of the jaw relative to the outer dimension of the upstream connector in the longitudinal profiling direction

According to still other advantageous features of the invention, the device comprises a cable having a conductor crimped into the second connecting terminal of the upstream connector.

According to still other advantageous features of the invention, the device comprises a cable having a crimped conductor in the second connection terminal of the downstream connector. The invention also relates to a connection box comprising at least two main electrical connection devices having all or some of the above characteristics, the two main devices respectively corresponding to the neutral and to a phase of a main electrical connection. , upstream cable conductors being connected - 5

electrically to the first connection terminals of their upstream connectors while downstream cable conductors are electrically connected to the second terminals of their downstream connector connection, the cabinet further comprising at least two branch electrical connection devices having all or some of the characteristics above, the two branching devices corresponding to the neutral and to a phase of a branch electrical connection, branch cables electrically connecting the second connection terminals of the upstream connectors of the main devices to second terminals of the connection devices derivation.

The invention will be better understood on reading the following description of a non-limiting embodiment of the invention and in the light of the accompanying drawings in which: - Figure 1 shows a perspective view of a box according to the invention, with a support panel of a meter and a circuit breaker (not shown), - Figure 2 shows a perspective view of a box according to the invention, this box being shown without its protective cover FIG. 3 represents a perspective view of an electrical connection device according to a first embodiment of the invention, the device being shown with a fuse between the upstream and downstream connectors; FIGS. 4 and 5 are perspective views respectively representing the upstream connector and the downstream connector of FIG. 3, - FIGS. 6 and 7 are perspective views respectively representing the upstream connector and the downstream connector according to another embodiment. embodiment of the invention, the connectors being devoid of crimped cable or cable (e). FIGS. 8 and 9 are perspective views respectively representing the upstream connector and the connector of FIG. 9, the connectors being provided with cable or cable crimped into the second connection terminal;

FIG. 10 is a view of a box according to the invention comprising connection devices according to the invention, in which two phase and neutral devices are connected in shunt with respect to two phase and neutral connection devices of a connection. main, - Figures 11 to 13 show several embodiments of bypass connections use of the devices according to the invention, - Figure 14 partially shows a cross member for receiving an upstream or downstream connector of a device according to the invention , the cross-member being mounted on a box according to FIGS. 1 and 2, - FIGS. 15 and 16 partially represent the cross-piece of FIG. 14, on which a downstream (short) connector and an upstream (long) connector are respectively mounted, and FIG. 17 is a profile view of a connection device according to the invention, provided with its two connectors mounted on the crosspiece of FIGS. 14 to 16, a fuse being connected. electrically to these connectors.

FIG. 1 shows a box 1 for electrical connection overhanging a panel 2 for fixing an electric meter (not shown). The box 1, shown alone in FIG. 2, contains devices 3, 4 for electrical connection according to the invention, which are at least two in number for a single-phase main connection (a phase 3 and a neutral 4) or at least there are four for a three-phase main connection (three phases and one neutral). The example presented is a single-phase connection. Each device 3, 4 of connection phase 3 or neutral 4 is connected on the one hand upstream to an upstream cable conductor (phase or neutral) coming from the electrical network, and secondly downstream to a downstream cable conductor ( phase 5 or neutral 6) going to an electrical equipment, for example the electric meter. With reference to FIGS. 1 to 3, each connection device 3, 4 comprises, for this purpose, an upstream connector 7 and a downstream connector 8 for connection respectively to the upstream and downstream cable conductors 5, 6. Note that these upstream and downstream connectors have a degree of protection "IP2X" (standard), an insulating protective envelope covering these connectors as shown in Figures 1 and 2 (see also 2965675 -7

Figures 15 and 16 respectively illustrating a downstream connector and an upstream connector in their protective envelope). In the usual way, a connection device 3 associated with a phase receives a fuse 9 electrically connected to the upstream and downstream connectors 8. A connection device 4 associated with the neutral receives a disconnecting strip 10 electrically connected to the upstream and downstream connectors 7 8.

According to an essential aspect of the invention the upstream connectors 7 and downstream 8 each comprise a main body provided with at least two connection terminals formed in the same shape of profile. Referring to Figures 4 and 5 where there is illustrated upstream connectors 7 (shown in this example without crimped cable) and downstream 8 (shown in this example in version with cable or cable crimped (e)) according to a first embodiment of embodiment of the invention, it is observed that the upstream connector 7 has a main body 11 which, in cross section to the longitudinal profiling direction X, has the same shape as the main body 12 of the downstream connector 8. These two elements 11, 12 are obtained from the same aluminum profiles or profiles of identical shapes. Each main body 11, 12 comprises a first connection terminal 13 adapted to the connection of the upstream cable conductor, as well as a second downstream connection terminal 14 adapted to connect the downstream cable conductor. The upstream cable conductor has a section greater than that of the downstream cable conductor. Thus the first terminal 13 comprises a passage of section greater than that of the passage of the second terminal 14. Note that the passages of these terminals are closed at their periphery and must therefore be distinguished from connection jaws, such as those receiving typically a fuse knife, as mentioned below. The passage of the first terminal 13 comprises means 15 for perforating a cable insulator, typically three protruding edges directed towards the center of the passage (FIG. 4). Note that the main body 11, 12 of each connector 7, 8 has, in cross section, the general shape of a rectangle in which is inscribed the passage of the first terminal 13. This passage also has the form 2965675 -8

general of a rectangle. The rectangle formed by the main body 11, 12 has a slightly narrowed base in the illustrated example. According to another aspect of the invention, each connector 7, 8 comprises a jaw 16 for receiving a fuse cutter 18 or cut-off strip 10. This knife extends in the longitudinal profiling direction X (FIG. 18). In the example illustrated in Figures 4 and 5, the jaw 16 consists of a first contact pad 19 integrally formed with the profiled main body, and a second contact pad 20 consisting of a stamped strip. The latter is attached to the first stud 19 and screwed onto the main body 11, 12 of the connector 7, 8. The second stud 20 is screwed onto a large side of the rectangle formed by the cross section of the connector 7. 8. It is noted that the second stud 20 is, at its free end opposite the screw, shaped substantially symmetrically with the first contact pad 19. The main body 11, 12 also comprises a rib 21 formed on a long side of the rectangle. The second stud 20 is wedged and prepositioned against this rib 21, to ensure proper positioning and orientation, before its screwing on the main body 11, 12, using a screw 22. The first contact pad 19 extends from a small side of the rectangle formed by the cross section of the connector 7, 8, substantially in the extension of one of the long sides of the rectangle. In the first embodiment illustrated in FIGS. 3 to 5, the jaw 16, the first terminal 13 and the second terminal 14 are substantially aligned, the first terminal 13 being located between the jaw 16 and the second terminal 14. the second terminal 14 is shaped in the thickness of the short side of the rectangle opposite that supporting the jaw 16. In addition, the upstream connectors 7 and downstream 8 have different dimensions in the longitudinal direction X profiling. The upstream connector 7 has 30 in this direction a dimension greater than that of the downstream connector 8, typically twice as large as the latter. The upstream connector 7 comprises a clamping screw 23 passing through the short side of the rectangle formed by the main body 11. This screw 23 is displaceable towards the passage of the first connection terminal 13 so as to clamp the received upstream cable connector 35 in this passage, with its sheath, the opposite of the means 2965675 -9

15. The screw is inserted into a face of the upstream connector which supports the jaw 16, this face being obtained by milling or any other suitable machining removing a part of the first contact pad 19, in the longitudinal direction X profiling. the illustrated example, the dimension of the first contact pad 19 is approximately equal to half of the total dimension of the upstream connector in this longitudinal direction X. The clamping screw 23 is typically a screw with a rupture head allowing the calibration of the clamping force of the cable to a predetermined value. Another embodiment of the invention is illustrated in FIGS. 6 to 9, and hereinafter described only in that it differs from the previous embodiment. Figures 6 and 7 illustrate upstream and downstream connectors 24 in a version without cable or cable crimped into the second terminal. Figures 8 and 9 illustrate upstream connectors 24 and downstream 25 in a version with cable or cable 26 pre-assembled, and more precisely crimped into the second connection terminal 27. In this embodiment, the main body 28, 29 respectively upstream 24 and downstream connectors 25 also has the general shape of a rectangle with a small side forming the base is narrowed. The first connection terminal 30 for receiving an upstream cable connector comprises a passage also having a generally rectangular general shape inscribed in the rectangle of the main body 28, 29. The second connection terminal 27 comprises a reception passage 25 of a cable connector, typically a downstream cable. The peripheral edge of this passage has the general shape of a rib 31 outside the main body 28, 29. This rib has a rounded cross section bypassing the passage of the second terminal 27. A jaw 32 receiving a fuse knife or severing bar (not shown) is provided as in the first embodiment. In this new example, the first contact pad 33 integral with the main body 28, 29 is substantially located in the middle of the short side of the rectangle formed by the main body (in cross section). The second contact pad 34 applied against a large side 35 of the rectangle of the main body 28, 29 has a substantially flat shape and is 2965675 -10-

fixed with a screw 35. In non-illustrated variants of the invention, the attachment could be made in other ways, for example by crimping. Thus, the zone of reception of the fuse knife or sectioning bar is offset with respect to a median plane passing through the main body 28, 29, passing through the first terminal 30 and the first contact pad 33. As in the first mode embodiment, the upstream connector 24 has a length greater than that of the downstream connector 25 (length or dimension considered in the longitudinal direction of profiling X). The upstream connector 24 comprises a head-breaking screw 36 movable to clamp a cable conductor inserted into the passage of the first terminal 30.

With reference to FIGS. 6 to 9, it can be seen that the same form of profile 15 makes it possible to obtain connectors of different types, typically upstream or downstream connectors 24, as already explained, but also pre-equipped or non-cable connectors. cable 26 for specific applications consisting of making branch connections of a main branch. FIG. 10 shows an example of a box 37 provided with two connecting devices 38, 39 of a single-phase main branch. A first connecting device 38 associated with the neutral comprises a sectioning bar. A second connecting device 39 corresponding to a phase comprises a fuse. These devices 38, 39 of the main branch are of the same type as those previously described. They each comprise an upstream connector 40 provided with a first connection terminal 41 receiving an upstream cable conductor (not shown) connected to the network, but also provided with a second connection terminal 42 for branch connection. These devices 38, 39 of the main branch also each comprise a downstream connector 43 each provided with a first connection terminal (inoperative, but present to the extent that these connectors 43 are made in the same profile shape as the upstream connector) and a second connection terminal 44 for receiving a downstream cable conductor 45 connected to electrical equipment, such as the electric meter (not shown). 2965675 -11-

In this example, the cabinet also includes two connection devices 46, 47 for branch connection. These devices are also of the same type as those previously described. A first branch connection device 46 associated with the neutral comprises a sectioning bar. A second connecting device 47 corresponding to a phase comprises a fuse. According to the invention, the shunt connection consists in that the box comprises shunt cables or cables 48, 49 electrically connecting the second connection terminals 42 of the upstream connectors 40 to the second connection terminals 50 of the downstream connectors of the devices electrical branch connection. In this arrangement, it can be seen that the devices 46, 47 of the branch branch are arranged head-to-tail with respect to the devices 38, 39 of the main branch. The invention is applicable similarly to a three-phase main branch. The single-phase branch branch, comprising a phase and a neutral, respectively connecting to a phase and the neutral of the main three-phase branch.

Figures 11 to 13 illustrate different applications or branch configurations in branch of a main branch. Each connecting device according to the invention is schematized by a rectangle. By convention, each black rectangle designates the neutral and each white rectangle designates a phase. The example of FIG. 11 is similar to that of FIG. 10. FIG. 11 illustrates two connection devices 51 of a single phase main branch in "power consumption" mode. Upstream cable conductors 52, coming from the network, are connected to the first connection terminals of the upstream connectors of these devices 51. Leaders 30 of cable or downstream cable 53, going to an electric meter, are connected to the second connection terminals of the Downstream connectors of these devices 51. A bypass connection operating in "power generation" mode (in particular by photovoltaic means) comprises two connection devices 54 similar to the connection devices 51 of the main branch. This branch connection 2965675 -12-

is also single phase. The branch connection devices 54 are connected by the second connection terminals of their downstream connectors to the second connection terminals of the upstream connectors of the devices of the main branch 51. In FIG. 12, four connection devices 55 of FIG. a three-phase main connection in "energy consumption" mode. Upstream cable conductors 56 and downstream cable conductors 57 are connected to the devices 55 in a similar manner to the single-phase example of FIG. 11. Likewise, two connection devices 58 of a single-phase bypass branch are connected ( by the second terminals of the downstream connectors) to the second terminals of the upstream connectors of two of the connecting devices of the main branch (one neutral and one phase). This branch connection also operates in "power generation" mode (in particular by photovoltaic means). In FIG. 13, four connection devices 59 of a three-phase main branch are illustrated, this time operating in "energy production" mode. Upstream cable conductors 60 and downstream cable conductors 61 are connected to the connecting devices 59. Two connecting devices 62 of a single-phase branch branch are connected (through the second terminals of the downstream connectors) to the second terminals of the connectors. upstream of two of the connecting devices of the main branch (a neutral and a phase). This branch connection operates in this example in "power consumption" mode. As indicated in the example of FIG. 10, the connection devices of the main branch and those of the branch branch are arranged head-to-tail with respect to each other, using in all cases the same type of upstream connector and the same type of downstream connector, as described above. Figures 12 and 13 illustrate a three-phase left-hand connection and a single-phase right-hand connection. Of course, this arrangement can be reversed without departing from the scope of the invention, that is to say by arranging the single-phase connection on the left and the three-phase connection on the right.

Figures 14 to 17 illustrate the establishment and attachment of upstream connectors 40 and downstream 43 on a cross member 63 partially shown. This 2965675 -13-

The cross member 63 in the cabinet 37 includes a row of upper housings and a row of lower housings, the housings of the two rows being associated in pairs to receive connection devices according to the invention. The housings of each pair are arranged facing each other (only one housing is shown in FIG. 14). Housings to accommodate connection devices (main or branch connection), with upstream connectors and downstream connectors respectively up and down or vice versa. A slight lateral shift between the housings of the same pair makes it possible to arrange the jaws of the upstream and downstream connectors of each device in alignment with each other in order to allow a correct connection of the fuses and the sectioning bars. . Each connector inserted into its envelope is fixed to the crossmember 63 by a rail system: a base of the envelope comprises lateral ribs 15 sliding in rails 65 provided on the crosspiece 63. Referring to Figure 15 illustrating a downstream connector 43 (connector "short" relative to the upstream connector), each housing includes a first stop 66 of the downstream connector 43. This first stop 66 limits the travel of the downstream connector when it is inserted into the housing 64. A second stop 67 ensures a locking of the downstream connector in its housing by preventing it out of the housing 64. Figure 16 shows an upstream connector 40 (connector "long" with respect to the downstream connector). This is in contact against a bearing face 68 at the bottom of the housing 64. The upstream connector 40 is retained in its housing also by the second stop 67. A hollow shape under the upstream connector 40 allows in this case to receive the abutment 66 (which in this case is useless). Thus we see that the same type of housing 64 can receive either an upstream connector 40 or a downstream connector 43. This is true for each row of upper or lower housing of the cross member 63. Other retaining means (not illustrated) upstream and downstream connectors may be considered within the scope of the invention, replacing the first and second stops, or even rail systems. 2965675 -14-

FIG. 17 also shows that the upstream 40 or downstream connectors 43 can be assembled: either on a unipolar support 69 for fulfilling the CCPI (Individual Main Circuit Cut) function described, or on a multipolar support 70 for optimizing the overall price of a solution with several CICPs.

Of course, the invention is not limited to the means that have just been described and includes all the technical equivalents.

Claims (10)

REVENDICATIONS1. Fusible electrical connection device or severing strip (9, 10) comprising an upstream connector (7, 24, 40) for connecting an upstream cable conductor (52, 56, 60) from an electrical network, and a downstream connector (8, 25, 43) for connecting a downstream cable conductor (5, 6, 45, 53, 57, 61) to electrical equipment such as a power meter, fuse or disconnecting strip (9, 10) being disposed between these upstream (7, 24, 40) and downstream (8, 25, 43) connectors and electrically connected thereto, characterized in that the connectors upstream (7, 24, 40) and downstream (8, 25, 43) each comprise a main body (11, 12, 28, 29) provided with at least two connection terminals formed in the same section shape, in section transverse to the longitudinal profiling direction (X), a first connection terminal (13, 30) being adapted to connect an upstream cable conductor (52, 56, 60) in the longitudinal profiling direction (X), a second connection terminal (14, 27) being adapted for connecting a downstream cable conductor (5, 6, 45, 53, 57, 61) in the longitudinal profiling direction (X), each of the upstream (7, 24, 40) and downstream (8, 25, 43) connectors being further provided with at least one jaw (16, 32) for receiving a fuse knife (18) or severing bar (9, 10). 2. Device according to claim 1, characterized in that the first connection terminal (13, 30) comprises a first passage in which are provided means for perforation (15) of a cable insulation, consisting of at least one protruding ridge, in particular consisting of three projecting ridges directed towards the center of the passage. 3. Device according to claim 1 or 2, characterized in that the second connection terminal (27) comprises a second passage whose peripheral edge forms a thickness materializing a rib (31) outside the main body (28, 29). ). 2965675 -16- 4. Device according to any one of claims 1 to 3, characterized in that the jaw (16, 32) consists of a first contact pad (19, 33) integral with the main body (11, 12). , 28, 29) and a second contact pad (20, 34), in particular consisting of a pressed strip 5, attached to the first and fixed on the main body (11, 12, 28 , 29). 5. Device according to claim 4, characterized in that the main body (28, 29) has a substantially rectangular general shape in cross section to the longitudinal profiling direction (X), the passage of the first terminal (30) being formed inside said rectangular shape, the main body being further shaped so that the first contact point (33) extends from a small side of the rectangle, in particular from the center of the rectangle and the rib (31) of the second terminal (27) extends from a large side of the rectangle. 6. Device according to claim 5, characterized in that the second contact pad (20, 34) is firstly applied against a large side of the main body (11, 12, 28, 29) and fixed thereto, and on the other hand positioned on the outside of the main body via pre-positioning means, in particular an outer edge or rib (21, 31) on which the second contact pad (20, 34) bears, the outer rib (21, 31) being in particular the rib (31) formed by the peripheral edge of the second connection terminal (27). 25 7. Device according to any one of claims 1 to 6, characterized in that the upstream connector (7, 24, 40) comprises a clamping screw (23, 36) adapted to be moved towards the passage of the first terminal of connection (13, 30), the screw being inserted into the main body (11, 28) of the upstream connector (7, 24, 40) perpendicular to a face of which the jaw (16, 32) is raised, in particular in a countersunk area shortening the size of the jaw (16, 32) relative to the outer dimension of the upstream connector (7, 24, 40) in the longitudinal profiling direction (X). 2965675 -17- 8. Device according to any one of claims 1 to 7, characterized in that it comprises a cable (26) having a crimped conductor in the second connection terminal (27) of the upstream connector (24). 5 9. Device according to any one of claims 1 to 8, characterized in that it comprises a cable (26) having a crimped conductor in the second connection terminal (27) of the downstream connector (25). 10. Connection box (1, 37) characterized in that it comprises at least two main electrical connection devices (38, 39, 51, 55, 59) according to any one of the preceding claims, respectively corresponding to the neutral and at a phase of a main electrical connection, upstream cable conductors (52, 56, 60) being electrically connected to the first connection terminals (13, 30) of their upstream connectors (7, 24, 40) while downstream cable conductors (53, 57, 61) are electrically connected to the second terminals (14, 27) of their downstream connector (8, 25, 43), the cabinet (1, 37) further comprising at least two electrical branch connecting devices (46, 47, 54, 58, 62) according to any one of the preceding claims, corresponding to the neutral and a phase of an electrical branch connection, bypass cables (48, 49 ) electrically connecting the second terminals of connecting (14, 27) the upstream connectors (7, 24, 40) of the main devices (38, 39, 51, 55, 59) to second terminals (14, 27) of the branching devices (46, 47). , 54, 58, 62).