MXPA97002804A - A power distribution board electr - Google Patents

Abstract

The described electrical distribution board comprises a main switch (20), a plurality of secondary switches (26), electrical conductors (27-30) connecting the secondary switches (26) the main switch (20), and means (20b, 21, 24) to mount the switches on the base (22) of the board. To achieve a quick and easy assembly of the board with the use of secondary switches of different shapes and sizes, a body of insulating material (21), detachably fixed to the base (22), is provided, the electric conductors being incorporated in it. body (21) in the form of metal elements (27-29), substantially rigid, with ends (27a, 29) projecting from the body for a connection to the main switch (20) and to the secondary switches (2)

Description

"AN ELECTRICAL ENERGY DISTRIBUTION BOARD" FIELD AND BACKGROUND OF THE INVENTION The present invention relates to electric power distribution boards and, more particularly, to an electrical distribution board comprising: a support and housing structure, box-shaped, having a front panel with openings and a base, a unit with a main switch having input connectors for an electrical connection to supply conductors and output connectors, a plurality of secondary switches having respective input and output connectors, electrical conductors that electrically connect the input connectors of the switches secondary to respective output connectors of the unit with the main switch, and first and second mounting means for fixing the unit with the main switch and the BE ?: 24583 secondary switches, respectively, to the base of the board in such a way that The operating and indicating elements of the switches are n disposed at predetermined positions that are accessible and visible through the openings in the front panel. Electric distribution boards of the type described above are mainly used to power electric power distribution networks of residential or industrial units with global power loads of between 250 and 500 KW. Switches of various shapes and sizes are available in the market for these applications and the type of switch that is to be used in the case in question is therefore taken into account in the construction of electrical distribution boards. More particularly, after selecting a support structure and housing of adequate dimensions, the installer has suitable mounting accessories for the pre-selected switches, fixes these accessories to the base of the support structure, adjusts the electrical devices, this is , of the switches and any other electrical devices, makes the necessary electrical connections between the unit with the main switch and the secondary switches using, for this purpose, any interconnection modules that may be available or generic electrical conductors such as cables and strips. metal, and, finally, adjusts a front panel closure having openings formed in advance in the region of the operating and indicating elements of the adjusted electrical devices.

DESCRIPTION OF THE INVENTION The object of the present invention is to propose an electrical distribution board that is suitable for quick and easy adjustment with any type of switch. This object is achieved, according to the invention, by virtue of the fact that the electric distribution board comprises a body of insulating material removably fixed to the base and that the electrical conductors comprise metal elements, substantially rigid, incorporated in the insulating body and having first end portions projecting from the insulating body for a connection to the output connectors of the unit with the main switch, and second end portions for a connection of the input connectors of the secondary switches. The invention will be better understood from the following detailed description of two embodiments given by way of non-limiting example with reference to the accompanying drawings, in which: Figure 1 shows a generic electrical distribution board that can be formed according to the invention, seen from the front, Figure 2 is a perspective view, not to scale, of a portion of the electrical distribution board of Figure 1, without the front panel and with portions removed in order to show the interior according to a first embodiment of the invention, Figure 3 is a sectional view of a portion of the board of Figure 2, Figure 4 is a perspective view of a portion of the electrical distribution board of Figure 1, according to a second embodiment of the invention, and Figure 5 is a sectional view of a portion of the board of Figure 4.

As can be seen in Figure 1, a generic electrical distribution board comprises a housing and support structure 10, box-shaped, in the form of a cabinet fastened to a wall with a door 11 having a glass window 12 and a lock 13. A front panel 14 covers the components and internal structures: internal of the board, leaving visible and accessible through the appropriate openings only the elements 15 of operation and indication of a main switch and the elements 16 of operation and of indication of a plurality of secondary switches arranged in two parallel vertical rows. Figure 2 shows a unit 20 which, in this embodiment, is constituted only by a main switch but which could also include a differential protection device and / or other electrical devices or devices, and which is fixed to the base 22 of the board by means of screws 20a and mounting spacer means 20b of a thickness such as to bring the operating and indicating elements 15 and 16 to the correct level such that they appear through the openings of the panel 14, as can be seen in FIG. Figure 1. Also visible in Figure 2 and in section in Figure 3 are a body 21 of insulating material, for example a plastic material, fixed to the base 22 of the board by screws 21a, as well as two plates formed 24 which also they are fixed to the base 22 of the board by means of screws 21a and each of which has a rail 24b for the mutual interlocking assembly of standardized switches 26. Metal elements. Al, substantially rigid, are housed in suitable seats of the body 21 and have terminals outside the body. More particularly, the metal elements are constituted by three copper bars 27 and by accessories 28 also of copper, welded to the bars and extending perpendicular to the bars at substantially regular intervals, each accessory having two ends, all indicated with the 29, which are already projected from the body. The protruding ends 29 form two opposing comb structures arranged in the same plane. The dimensions of the body 21 and of the plates 24, the spacing and dimensions of the ends 29 of the comb-like structures, and the relative arrangement of their various parts are such that each of the switches 26 is arranged with its connector or input terminal in the region of one end 29. In this embodiment, each of three adjacent switches is connected to one of the bars 27 and the switches have their operating levers connected to each other. Therefore, they can put the three terminals of a circuit, not shown, of a user, connected to the connectors or output terminals of the three switches, in communication with the three supply phases supplied to the three bars 27. This has place by means of rigid copper connectors 30 each fixed, on one side, to an end 27a of one of the bars 27 by a screw 31 and, on the other hand, to an output connector of the main switch 20, the connectors of The main switch input is generally intended to be connected to three power distribution board power cables, not shown. The dimensions of the mounting means, that is, the dimensions of the body 21, the plates 24 and the spacer 20b, are selected in such a way that the operation and indication portions 16 of the secondary switches 26 are disposed substantially in the same plane as the main switch operating and indicating portions 20 such that they can be projected from the appropriate openings of the panel 14 of the board (Figure 1). In the embodiment of Figures 4 and 5, in which parts corresponding to those of Figure 2 are indicated by the same reference numerals, the insulating body 21 which houses the electrical connection conductors 27, 28 and 29 also includes the means for mounting secondary switches 26. There are also standardized switches but their dimensions and mounting system differ from those shown in Figure 2.

In this embodiment, the elements extending from the three bars 27 also have ends 29 arranged at regular intervals and aligned along the bars, but each of them is in a plane perpendicular to the bars. These ends 29 are formed as clamps that can be adjusted in corresponding housings of the input connectors of the switches. It will be appreciated that the dimensions of the insulating body 21 are selected in such a way that the operating and indicating portions are substantially as spaced from the base of the board as the switches of the embodiment of Figure 1. The positions and dimensions of the Connection portions 30 are also preferably the same as those of the embodiment of Figure 2 in such a way that, although the mounting and electrical connection structures are different in the two embodiments, they are easily interchangeable. Clearly, the structure of the insulating body 21 and that of the other characteristic elements of the invention can be modified in many different ways to allow secondary switches of other types to be mounted. As can easily be seen, with the electrical distribution board according to the invention, the following advantages are achieved: the support and housing structure 10 can be mass produced since it remains substantially the same for any type of switch used, the electrical connections between the unit With the main switch and the secondary switches 26 are formed in a structure that can be replaced as a whole very easily if it is necessary to change the secondary switches for others of a different type, the board assembly is extremely easy since it simply consists of the fixing of the insulating body with the electrical connections and simply in the fixing of the insulating body with the electrical connections and of the structures to support the switches if these are separated from the insulating body, and the connection between the unit 20 with the main switch and the Secondary switches 26 is practically automatic since the only operation required is the fixing of the rigid connectors 30 that connect the bars 27 of the insulating body to the output connectors of the unit with the main switch. It is noted that in relation to this date, the best method known by the applicant to carry out the present invention, is the conventional one for the manufacture of the objects to which it refers. Having described the invention as above, the content of the following is claimed as property:

Claims (8)

1. An electrical distribution board comprising: a support and housing structure, box-shaped, having a front paper with openings and a base, a unit with a main switch having input connectors for an electrical connection to conductors of supply and output connectors, a plurality of secondary switches having respective input and output connectors, electrical conductors that electrically connect the input connectors of the secondary switches to respective output connectors of the unit with the main switch and first mounting means and s 'mounting means for securing the main switch unit and the switches respectively, to the base of the board such that the elements (' operating and indicating are arranged in predetermined positions in which they are accessible and visible through the openings in the front panel, characterized in that they of a body of insulating material removably attached to the base and in that the electrical conductors comprise metal elements, substantially rigid, incorporated in the insulating body and having first end portions projecting from the insulating body for a connection to the connectors output of the unit with the main switch, and second end portions for a connection to the input connectors of the secondary switches.

2. An electrical distribution board according to claim 1, characterized in that the electrical conductors comprise connectors substantially rigid between the first end portions of the metal elements and the outlet connectors of the unit with the main switch.

3. An electric distribution board according to claim 1 or claim 2, characterized in that the second mounting means and the insulating body are formed in one piece.

4. An electric distribution board according to any one of claims 1, 2 and 3, characterized in that the metal elements incorporated in the insulating body comprise three bars that extend parallel to each other inside the insulating body, and a plurality of accessories , each fixed to a bar and extending in a direction substantially perpendicular to the bars, one end of each of the bars being one of the end portions for a connection to the output connectors of the unit with the main switch and the ends of the accessories being the final portions for a connection to the input connectors of the secondary switches.

5. An electrical distribution board according to claim 4, characterized in that the ends of the accessories are arranged at substantially regular intervals in the same plane, parallel to the bars.

6. An electrical distribution board according to claim 5, characterized in that the ends of the accessories are in a substantially comb-shaped arrangement.

7. An electrical distribution board according to claim 5, characterized in that the ends of the accessories are arranged substantially to form two opposed combs that are in the same plane.

8. An electrical distribution board according to claim 4, characterized in that the ends of the accessories are arranged at substantially regular intervals, each end being in a plane perpendicular to the bars and the ends being aligned with one another along the bars .