• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This assembly allows the positioning of drawers for an electrical panel and comprises a vertical busbar (J2) for distributing the electrical current to electrical devices, this busbar comprising several bars, which are arranged in the same vertical plane and on which it is intended to connect drawers of the electrical panel, and several modules (20) for positioning the drawers, which are arranged one above the other and which surround the bars of the vertical busbar. The positioning modules (20) comprise means (50) for increasing the isolation distance between the bars at the interface between two successive modules, this isolation distance corresponding to the length of the electrical ramping path between the two modules. bars.
    公开号:FR3019943A1
    申请号:FR1453275
    申请日:2014-04-11
    公开日:2015-10-16
    发明作者:Joseph Pellicano；Pierre Carle；Philippe Blochouse
    申请人:Schneider Electric Industries SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a set of positioning, or skewed drawers for an electrical panel, an electrical panel comprising such a set. DRAWERS POSITIONING ASSEMBLY FOR AN ELECTRICAL BOARD, ELECTRICAL BOARD COMPRISING SUCH AN ASSEMBLY AND METHOD FOR MOUNTING THE SAME and a method of mounting this assembly. The invention applies to low-voltage switchboards, which are provided with draw-out drawers.
    [0002] In a known manner and as described in EP-A-1 043 820, a low-voltage electrical panel comprises a cabinet, inside which is disposed, generally in the upper part, a horizontal power supply busbar. This horizontal busbar is connected with a vertical busbar for distributing electric current to different electrical devices. The electrical devices are selectively connected to the electrical panel by means of draw-out drawers, which act as disconnectors. We are talking about an array with draw-out drawers. The vertical busbar comprises several bars arranged in the same vertical plane. The draw-out electrical panels are particularly suitable for electrical installations with many electrical appliances. Each drawer includes all the electrical components necessary for the operation of a device, such as a circuit breaker, a contactor or a thermal relay. Each drawer further comprises means for connection to the bars of the vertical busbar, such as clamps, and an output terminal block to which are connected power cables of the electrical apparatus associated with the drawer.
    [0003] The use of drawout drawers allows, in case of failure, to easily replace a defective drawer. The drawers are each positioned, or skewered, on a set of positioning provided for this purpose, which is housed in the cabinet of the electrical panel. This positioning assembly comprises several modules, each module offering the possibility of skewing a drawer. Generally, the modules are arranged one above the other, and provide a mechanical function of skewing of the drawers, electrical insulation of the busbar vertical relative to the outside and electrical insulation of the bars of the vertical busbar between them. However, between two plugging modules of a drawer, the bars of the vertical busbar are directly opposite each other due to the empty space between two successive positioning modules. Some standards require reducing the risk of short circuit by increasing the isolation distance and the direct vis-à-vis between conductive elements. It is to these constraints that the invention more particularly intends to remedy by proposing a drawer positioning assembly for an electrical panel in which the bars of the vertical busbar are better insulated from each other. To this end, the invention relates to a set of drawers for an electrical panel comprising a vertical busbar for distributing the electric current to electrical apparatus, this busbar comprising several bars, which are arranged in the same vertical plane and on which it is intended to connect drawers of the electrical panel, and several drawer positioning modules, which are arranged one above the other and which surround the bars of the vertical busbar. According to the invention, the positioning modules comprise means for increasing the isolation distance between the bars at the interface between two successive modules, this isolation distance corresponding to the length of the electrical ramping path between the two modules. bars. Thanks to the invention, the crawling path, or leakage path for the current to pass from one bar to the other, which is a "forced" path for the current, has a greater length than for a standard positioning module. The electrical insulation between the bars of the vertical busbar is thus reinforced without increasing the spacing between the bars. According to advantageous but non-obligatory aspects of the invention, a drawer positioning assembly for an electrical panel may comprise one or more of the following characteristics, taken in any technically permissible combination: the augmentation means comprise separation flanks of bars of the vertical busbar, between which insulation ribs extend. - Insulation ribs have a broken line shape. - The insulation distance is 25.4 mm. Each positioning module comprises a first part, in which are provided passage openings for electrical connection means of a drawer to the bars of the vertical busbar, a second part arranged at the rear of the first part; and a shutter, which is movable with respect to the first portion between a closed configuration in which the openings are closed and an open configuration in which the openings are uncovered. - The shutter is a grid, which is movable horizontally relative to the first part, in a direction parallel to the vertical plane of positioning bars of the vertical busbar and which is positioned in the foreground of the module, while the grid comprises several openings and several bars, among which an end bar is adapted to be hooked to the first part when the shutter is in closed configuration. - The end bar is removable from the first part by applying a transverse force directed generally perpendicularly to the vertical plane in which are placed the bars of the vertical busbar, while the end bar has an inclined contact surface relative to this plane, and that the force applied to pick up the bar also causes a longitudinal displacement of the gate relative to the first part. Each module comprises a means for returning the shutter in closed configuration. - The biasing means comprises a flat spring attached to the first portion, which exerts an elastic loading force to return the shutter to its closed configuration. The invention also relates to an electrical panel, comprising a cabinet, in which is arranged a horizontal power busbar designed to be connected to a vertical busbar distribution. According to the invention, the table comprises a set of drawer positioning as described above. Finally, the invention relates to a method of mounting a drawer positioning assembly as described above. This process comprises successive steps of: a) laying a U-shaped cross-section metal casing flat with the two vertically oriented casing sidewalls and the outer surface of the casing bottom in contact with a surface planar, b) fixing the second part of a first module inside the envelope, at a first end of the envelope, c) assembling the second parts of the other modules one after the other by going from the first end to a second end, the first and the second end being respectively low and high ends of the envelope in the assembled configuration of the assembly in the electrical panel, d) positioning bars of the busbar vertical in housings of the second parts of the modules, e) fix the first part of the first module above the bars, and f) assemble the first part of the other modules one after the other, s the other way from the first end to the second end. The invention and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a drawer positioning assembly for an electrical panel according to its principle and with reference to the drawings in which: - Figure 1 is a perspective view of an electrical board comprising a drawer positioning assembly according to the invention; - Figure 2 is a view on a larger scale of the positioning assembly of FIG. 1, which is partially shown in the direction of the height; FIG. 3 is a perspective view on a larger scale of a positioning module of a drawer belonging to the positioning assembly of FIG. 2; FIG. 4 is a view, from below and in perspective, of an assembly of three positioning modules according to FIG. 3; FIG. 5 is a view similar to FIG. 4 taken from another angle; Figure 6 is a seen 3 is a perspective view of a front portion of the positioning module of FIG. 3; FIG. 8 is an exploded perspective view. Fig. 9 is an enlarged view of circled IX of Fig. 8; Fig. 10 is a horizontal section along plane X. in FIG. 7 of the front part of a positioning module, on which are mounted the shutter and the flat spring, - FIG. 11 is a view on a larger scale of the circled XI of FIG. 10, and Figure 12 is a partial view of a module according to the arrow XII in Figure 3, wherein a side of an identical module disposed above is nested. In Figure 1 is shown an electrical board, or electric cell 1. This electrical panel 1 is a low voltage switchboard, with a range of operation ranging from 400A to 2000A. The electrical panel 1 is a cabinet, whose frame is formed by uprights 2 and crosspieces 3, which define a generally parallelepiped cage. The uprights 2 and crosspieces 3 of Table 1 are metal bars.
    [0004] In this document, the "horizontal" and "vertical" directions are interpreted with respect to the configuration of FIG.
    [0005] A horizontal busbar J1 is installed at the top of the electrical panel 1. This busbar J1 is an electric power busbar and has one or more busbars for each phase of the power supply and for the neutral . In the example of a three-phase network, this horizontal busbar comprises four bars of rectangular section, among which three bars convey the phases of the network and a bar is connected to the neutral of the network. The bars of the J1 busbar run parallel to the ground in the configuration installed inside the electrical panel 1. The horizontal busbar J1 is electrically connected to two vertical busbars J2, which extend in the direction of the height of the electrical panel 1. In practice, several connecting pieces make it possible to electrically connect the bars of the busbar J1 with the bars of the busbars J2. The busbars J2 each comprise four rectangular busbars B, which extend in the same vertical plane P2. The plane P2 is parallel to the longitudinal direction of the bars of the horizontal busbar J1. The bars B of each vertical busbar J2 are housed inside a column 6 which protects the busbar from the outside, including dust and other particles. This column 6 also holds the bars in position and electrically isolates the bars of the busbar J2 between them. In Figures 3 to 5, only three bars B out of four are shown for clarity of the drawing. In practice, the fourth bar B, which is not shown, is received in the column 6 in a vertical housing visible on the left of the bars B in Figures 2 and 3 and which extends over the entire height of the column 6 d2 denotes the spacing of the bars B, that is to say the distance between two successive bars. In the example, d2 is approximately equal to 18 mm. The electrical panel 1 is called drawable drawers, that is to say it includes several T2 drawers that can be selectively connected to J2 distribution busbars by skew. In the remainder of the description, only one column 6 protecting a vertical busbar J2 is described, insofar as the other column is identical. This column constitutes a set 6 of positioning T2 drawers, which are intended to be connected to the vertical busbar J2 contained in the assembly 6. These drawers T2 can be alternately inserted or removed on the assembly 6. The drawers T2 can each are considered as switches arranged between the power source, here the busbar J2, and an electrical device, such as an electric motor. Closing this switch is simply done by plugging the drawer on the assembly 6, possibly with additional security. The T2 drawers are of different heights, including a height multiple of 50 mm. We are talking about a step of positioning the drawers. Thus, the electrical panel 1 may include drawers of 100 mm, 150 mm or 200 mm and up to 600mm in 50mm steps. In practice, the height of a drawer is chosen according to the power or type of electrical device to be connected. In comparison with current electrical panels where the pitch is 100 mm, the electrical panel 1 according to the invention allows to connect more drawers if the conditions allow, and therefore to connect more electrical appliances to a single table. Otherwise formulated, the density of drawers within the electrical panel 1 according to the invention is greater than the density of drawers in an electrical panel of the prior art. Each drawer has means for electrical connection to the bars of the busbar J2 and an output terminal block, on which it is possible to connect the electrical apparatus. In practice, the means of electrical connection of the drawers to the bars of a vertical busbar are formed by two-fingered clamps, which are provided for clamping the bars B. Thus, each drawer may comprise three or four connection clamps to bars B according to whether the busbar is three-pole or tetrapolar, these clamps not being visible in the figures.
    [0006] In the rest of the description, the terms "upper", "lower", "above" and "below" must be interpreted in relation to an installed configuration of the positioning assembly 6 in the electrical panel 1, as illustrated in FIG. Figure 1. The positioning assembly 6 comprises several modules 20, which are stacked one above the other in the direction of the height. In other words, the modules 20 are in contact with one another. The modules 20 are each made of electrically insulating material, preferably plastic. The modules 20 each have a height h20 of 50 mm, so that it is possible to insert a drawer on the electrical panel 1 every 50 mm. For example, a 150 mm drawer occupies three positioning modules 20.
    [0007] The modules 20 of the assembly 6 are contained in a sheet 8 envelope having a flat U-shaped horizontal section, with the bottom of the U directed towards the bottom of the cabinet. Here, the bottom of the cabinet represents the vertical wall of the electrical panel 1 opposite the drawers T2. The T2 drawers close towards the bottom of the cabinet. 8a and 8b respectively denote the low and high ends of the envelope 8. The positioning modules 20 of the drawers T2 are arranged above each other between a lower plug which is not shown in FIG. 2 and an upper plug . 20a and 20b respectively denote a low module and a high module, that is to say modules which are arranged at the lowest and highest of the assembly 6 in configuration installed in the electrical panel 1. The modules 20a and 20b are respectively arranged above and below the lower and upper plugs.
    [0008] The plugs of the assembly 6 are also made of an electrically insulating material, preferably a plastic material. Furthermore, the positioning modules 20 are each attached to the metal casing 8 by means of attachment means. These attachment means comprise notches 10 and 12 formed in the casing 8 and lateral fins carried by the modules 20, which are intended to be engaged in the notches 10 and 12. In addition, two stiffening belts 16, arranged in the upper and lower part of the assembly 6, strengthen the mechanical strength of the positioning assembly 6.
    [0009] In the remainder of the description, only one positioning module 20 is described, the others being identical. In addition, the "forward" direction is the operator-oriented direction when accessing the electrical cabinet, while the "back" direction is the direction toward the bottom of the cabinet, which is the opposite wall to the operator when accessing the cabinet from the front. Similarly, a "longitudinal" direction is a horizontal direction parallel to the plane P2 and a "transverse" direction is a direction substantially perpendicular to the plane P2. As can be seen in FIG. 3, the positioning module 20 comprises a front portion 22, a rear portion 24 and a shutter 26. The shutter 26 is placed in the foreground at the front of the positioning module 20, that is, that is, it is mounted on the front of the front portion 22. Placing the shutter 26 in the foreground at the front allows easy and quick replacement thereof, if necessary. The front 22 and rear 24 parts are arranged on either side of the bars B of the vertical busbar J2, on each side of the plane P2. The shutter 26 is movable longitudinally between a closed, or locked, configuration in which access to the vertical busbar bars J2 is blocked and an open, or unlocked, configuration in which the vertical busbar bars 52 are accessible for electrical connection with the clamps of a drawer. In practice, the shutter is locked when there is no drawer plugged on the module 20 and goes into unlocked configuration when a drawer is plugged into the module 20. In Figure 3, the shutter 26 is located in locked configuration.
    [0010] The shutter 26 is a grid which extends longitudinally in a plane P26 parallel to the plane P2. This shutter 26 has several openings 260 which are separated from each other by bars 262. The openings 260 and the bars 262 are generally of the same width, this width being measured longitudinally. More specifically, the shutter 26 has eight openings 260, separated by seven bars 262. The eight openings 260 form four pairs of successive openings. The two openings of each pair are passage openings for the two fingers of a drawer clamp. The four pairs of openings therefore correspond to the openings necessary for the connection of the drawer to the three phases of the network, more neutral.
    [0011] Furthermore, an end bar 264 is disposed on the right side when viewing the positioning module 20 from the front. This end bar 264 is a locking bar, or blocking the displacement of the shutter 26. The locking bar 264 is split, that is to say it comprises two parts 264a and 264b, which are separated by a slot 265 disposed approximately in the middle of the bar 264 on its height. Parts 264a and 264b are elastically deformable. In addition, as best seen in Figures 10 and 11, the end bar 264 has a contact surface S264 with an unlocking member belonging to the drawer, this unlocking member being adapted to unlock the shutter 26. In practice, the shutter unlocking member 26 is a two-finger fork, which is longer than the bar connection clamps B of the vertical busbar J2. The surface S264 is formed by the front face of the portions 264a and 264b of the end bar 264. It is a vertical surface which is inclined with respect to the plane P26, of an angle Al approximately equal to 45 °. The portions 264a and 264b of the bar 264 each comprise a tab 268 for hooking with the front portion 22 of the module 20. The tabs 268 are arranged side by side, as close as possible to the slot 265, on either side from it in height. As best seen in FIG. 8, the shutter 26 also comprises two pins 266, which are disposed at the end opposite to the locking bar 264. These pins 266 are housed in a longitudinal recess E266 formed in the shutter 26 and are face-to-face, in a vertical direction, this allows the withdrawal of the spring. The front portion 22 comprises eight openings 220 for passage of the clamps of the drawer. The openings 220 are disposed in the same plane P22, which is parallel to the planes P2 and P26 and are closed by the bars 262 of the shutter 26 in the closed configuration, which limits the risk of electrocution for the operator. This improves the electrical isolation of the vertical busbar J2 from the outside. In addition, the openings 220 are open when the shutter 26 is in the open configuration, that is to say they are each aligned transversely with an opening 260 of the shutter 26. The front portion 22 also comprises an opening 222 of passage for the shutter release member 26. The opening 222 is disposed at a longitudinal end of the front portion 22, right when looking at the front portion 22 from the front. The opening 222 is delimited by walls 221 and also ensures the attachment of the shutter 26 to the front portion 22. Indeed, as shown in Figure 11, in the locked configuration of the shutter 26, the tabs 268 of the bar 264 are attached to an edge 221 of the opening 222, which blocks the longitudinal movement of the shutter 26, with respect to the front portion 22, to the left of Figures 10 and 11. The front portion 22 has flanks 224 separation bars of the vertical busbar J2 between them. These flanks 224 are five in number and each extends rearward in a transverse direction, that is to say perpendicularly to the plane P22. They are arranged side-by-side in the rear part of the portion 22. The flanks 224 are not in contact with the bars B. The flanks 224 of the module 20 delimit on their upper edge a groove E224 for receiving a flank 224 ' belonging to an identical module arranged above. These flanks 224 'are shown in FIGS. 5 and 12. The respective surfaces of the wafer, that is to say the front edge of the flanks 224 and 224', are marked 224a and 224'a.
    [0012] The front portion 22 also includes slides 226 for guiding the shutter 26, which are distributed longitudinally within the front portion 22, on a lower edge and an upper edge. Furthermore, the front portion 22 defines a cutout 229 for the passage of a flat spring 228. This flat spring 228 is mounted on the part 22, at a longitudinal end opposite the opening 222. The flat spring 228 is an elastic tongue deformable, which is permanently in contact with the pins 266 and which deforms elastically during the displacement of the shutter 26. The flat spring 228 maintains, by default and elastically, the shutter 26 in closed configuration. More specifically, during unlocking, the shutter 26 moves longitudinally against the elastic load action of the flat spring 228. The flat spring 228 allows to return the shutter 26 in closed configuration when the drawer is removed, that is to say, it exerts an elastic force of return of the shutter towards its closed configuration. Furthermore, the movement of the shutter 26 is in practice blocked by the spring which abuts on the side wall opposite the shutter 229.
    [0013] The front portion 22 comprises, on an upper face S1, first ribs 50. These ribs 50 each extend longitudinally between two flanks 224, are electrically insulating and each delimit a receiving housing 52 on one side of a bar B vertical busbar J2. The ribs 50 are not rectilinear, that is, they have a broken line shape, or "baffle". Indeed, the ribs 50 each comprise a central portion 50c, which forms the bottom of the housing 52, two transverse portions 50b which run along the bar B on each side of the central portion 50c and two portions 50a, which longitudinally connect the portions 50b to the flanks 224. In the assembled configuration of the bars B in the assembly 6, the bars are in contact with the portions 50b and 50c of the ribs 50. The first ribs 50 and the flanks 224 for separating the bars, project towards the high relative to the upper face S1, a height of about 1cm. The rear part 24, more particularly visible in FIG. 6, serves mainly to isolate the bars of the vertical busbar J2 from the bottom of the metal casing 8. It delimits four slots 240 for receiving the bars B of the set of vertical bars J2. A single housing 240 is pointed in FIGS. 3 and 5 since the others are hidden by the bars B. The housings 240, all of which are visible in FIG. 6, are recesses with a generally rectangular horizontal section, which extend vertically and which are each adapted to wedge one side of a bar B, namely the side opposite to that engaged in a housing 52 of a rib 50. The bottoms of the housings 240 are contained in a vertical plane P24, which is parallel to the plane P2 . The portion 24 also includes notches 242 for wedging the flanks 224 of the front portion 22. The rear portion 24 comprises, on an upper face S2, second ribs 60 adapted to isolate the bars of the vertical busbar J2 with respect to the rear wall of the conductive envelope 8. These ribs 60 are U-shaped flat bottom, with the two branches of the U which are parallel and oriented towards the front portion 22. Finally, the rear portion 24 comprises a lower face S4 on which are arranged third ribs 62. These third ribs 62 are baffles isolating the bars of the vertical busbar J2 between them, at the interface with an identical module disposed below. As for the front portion 22, these third ribs 62 are not rectilinear, that is to say that they have a broken line shape. With respect to the ribs 50, the ribs 62 comprise an additional rectilinear portion, which extends rearwardly and which defines with the flank 224 'a wedging space of the flank 224 of the lower module.
    [0014] As seen in Figures 2, 4 and 5, the modules 20 are adapted to be nested in each other. Indeed, the front portion 22 has an upper face S1 and a lower face S3 which are complementary to one another. Similarly, the rear portion 24 has an upper face S2 and a lower face S4 which are complementary to each other. Thus, when mounting a module 20 on top of another, the top module is similar to a male part while the module disposed below is a female part. In addition, the portion 22 of each module defines, on its underside S3, spaces 54 for receiving the first ribs 50 carried by an identical module disposed below. These spaces 54 are provided between the module and the bars B of the vertical busbar J2 in assembled configuration of the assembly 6. Similarly, the third ribs 62 of the rear portion 24 are configured to be lodged in front of the ribs 60 carried by a module located above. In other words, the rear portion 24 of each module 20 delimits, at its upper surface S2, spaces E60 for receiving the ribs 62 of a module located above. These spaces E60 are arranged between the ribs 60 and the bars B of the busbar J2 in assembled configuration of the assembly 6. The modules are supported on one another, so that there is no of empty space left at the interface between two adjacent modules 20 in height. The positioning modules 20 are thus arranged, in partial overlap, one above the other, which corresponds to a "tile" effect, or covering. This improves the insulation between the conductors of the assembly 6. Furthermore, the immobilization of the front portion 22 relative to the rear portion 24 is formed via the casing 8, engaging the wings of the parts. 22 and 24 respectively in the notches 12 and 10 of the envelope 8. In operation, that is to say in the assembled state of the positioning assembly 6 and when the electrical panel 1 is in use, the current circulating in the bars B of the busbar J2 tends to flow from one bar to the other. For this, the current seeks to take the shortest path, or the most "easy" way. Here, the bars are separated from each other by air and by the flanks 224. As the constituent plastics material of the modules 20 is a better insulator than the air the current seeks to pass through the surface of the modules 20, by "licking »The walls, to join the adjacent bars. It is therefore necessary to have a distance or sufficient insulation capacity, at the walls, to avoid the creation of an electric arc. The isolation distance from which there is no arcing depends on the supply voltage of the vertical busbar J2. Beyond this distance, the ignition of the electric arc can not be done. The isolation between the bars of the busbar J2 is particularly delicate at the interface between two successive positioning modules.
    [0015] More precisely, and as can be seen in FIG. 12, at the interface between two modules, the ribs 50 of the lower module and the flanks 224 of the two modules form a continuous barrier between the bars at the level of the front portion 22. Here, this barrier is defined between a start point A, located on a bar B1 and a point C of arrival, located on an adjacent bar B2. The points A and C are arranged in the same horizontal plane at the junction between the portions 50b and 50c of the ribs 50. With this example, so that an electric arc is created between two successive bars, the current must first follow the portion 50b of a rib 50 to join a flank 224 in which is fitted the flank 224 'of the upper module. Then, the current must follow the surface of the flank 224 forward until it reaches the edge of the flank 224, that is to say its vertical front edge. The current must then travel along the surfaces 224a and 224'a of the edge of the flanks 224 and 224 'and then follow the wall 224 rearward. Finally, the current must join the bar B2 by taking the portion 50b of the rib 50 disposed on the other side of the flanks 224 and 224 '. In total, the current must travel a distance of 25.4 mm to move from one bar to another. This distance is an isolation distance of the bars between them and the way to go for the current to move from one bar to the other is a path of "rampage" or flight. In practice, the longer this path is, the lower the risk of the current "creeping" from one bar to the other. The insulation distance between the bars, which is 24.5 mm, is larger than the geometric distance d2 between two successive bars. 25.4 mm corresponds to the isolation distance of the American UL standard. Here, the isolation distance is large enough to avoid a short circuit between the bars. Thus, the isolation ribs 50 and the flanks 224 and 224 'make it possible to increase the isolation distance between the bars B without changing the spacing of the bars. The flanks 224 and 224 'thus form with the ribs 50 means for increasing the isolation distance between the bars of the interface between the two successive modules, in front of the modules 20. This isolation distance corresponds to the length of the electrical ramping path between the bars. In this case, it is the arrangement of the flanks 224 and 224 'with respect to the ribs 50 which creates the isolation distance. In FIG. 12, the ramping path is represented by arrows F4, for a current seeking to move between bars B1 and B2.
    [0016] The ramping path is similarly increased at the level of the front part 22. In this case, in order for an electric arc to be created at the rear and at the interface between two successive modules, the current must run along the ribs. 62 and the edge of flanks 224 and 224 '. The insulation distance is the same as for the insulation at the front of the modules 20. The ribs 62 thus form with the flanks 224 and 224 'means for increasing the isolation distance between the bars to the interface between two successive modules in the rear part of the modules 20. In this case, it is the broken line shape of the ribs 62 which creates the isolation distance. Furthermore, the ribs 60 also make it possible to increase the length of the electrical ramping path between the bars B and the metal casing 8, that is to say the isolation distance between the bars B and the casing 8 Indeed, if an electric arc is created, it must bypass the ribs 60 to reach the envelope 8. The isolation distance is such that the ignition of the electric arc does not occur. Furthermore, the upper surface of the lower plug is complementary to the lower surfaces S3 and S4 of the lower module 20a and the lower surface of the upper plug is complementary to the surfaces S1 and S2 of the top module 20b, so as to ensure good electrical insulation between the 6. When a drawer is connected to the module 20, the two fingers of the fork of the drawer, that is to say of the unlocking member, come from firstly in contact respectively with the two parts 264a and 264b of the bar 264 since the fork is longer than the electrical connection clamps. The fork then bears on the surface S264 of the two parts 264a and 264b of the bar 264 in a transverse direction F1. This results in a slight flexion or even a twisting of the parts 264a and 264b of the bar 264 and the tabs 268 unhook from the walls 221 of the opening 222. Moreover, since the drawer is inserted transversely into the electrical panel 1, a once the tabs 268 are detached from the walls 221 of the opening 222, the shutter 26 is unlocked and is driven in displacement in the slideways 226 in a longitudinal direction. Indeed, the bar 264 acts as a wedge thanks to its inclined surface S264 and transforms the transverse force F1 applied by the slide on the surface S264 of the bar 264, in a longitudinal displacement F3 of the shutter 26. The displacement F3 of the shutter 26 implies that the bars 262 of the shutter 26 discover the openings 220 of the front portion 22. Therefore, the openings 220 and 260 are aligned transversely and the drawer clamps can come connect to the 35 bars of the game of vertical bars J2.
    [0017] Furthermore, the shutter 26 can be unlocked from the front portion 22 only by skewing a drawer or using a specific tool. Thus, the opening of the gripper passage slots 220 can not be manually performed by the operator, which, from a normative point of view, corresponds to a higher level of security than for a manually detachable shutter. The positioning modules 20 of the positioning assembly 6 are assembled in the following manner. The metal casing 8 is placed flat, with the two side walls of the casing directed vertically and the outer surface of the bottom of the casing 8 resting on a flat surface. The rear portion 24 of the module 20a is fixed inside the casing 8. This rear portion 24 is disposed at the bottom of the casing, at the end 8a thereof. The rear portions 24 of the other modules 20 are then assembled horizontally one after the other, going from the first end 8a to the second end 8b of the envelope 8.
    [0018] A second step is to horizontally position the bars of the vertical busbar J2 in the housings 240 of the rear portions 24 of the modules 20. A third step is to fix the front parts 22, each equipped with a shutter 26. In a similar way to mounting the rear portions 24, the mounting of the front portions 22 is carried out horizontally going from the first end 8a to the second end 8b of the casing 8. Thus, the assembler begins by fixing the front portion 22 of the module 20a and assembles the other front parts 22 one after the other going towards the second end 8b of the envelope 8. The bars B of the vertical busbar J2 are then wedged between the front parts 22 and rear 24 of the modules 20 When all the modules 20 are assembled, the upper and lower plugs are respectively assembled with the modules 20b and 20a, so that once the assembly 6 is straightened, the plugs i Lower and upper are respectively below and above the modules 20a and 20b. The stiffening belts 16 are finally attached at the top and bottom of the assembly 6 to ensure a good mechanical strength thereof. The assembly 6 is then ready for use, that is to say, it can be straightened and installed in the electrical panel 1. The fact of assembling the positioning assembly 6 flat greatly facilitates assembly . The depth of the modules 20, that is to say their transverse dimension, can be adjusted over a range of 10 mm to accommodate different slenderness values of the bars. The slenderness of the bars corresponds to their transverse dimension and the adjustment of the depth of the modules 20 is made by approaching or moving the front part 22 of the rear part 24 away. This adjustment causes only the displacement of the envelope 8. The technical features of the embodiments and variants envisaged above can be combined with one another to give new embodiments of the invention.
    权利要求:
    Claims (11)
    [0001]
    CLAIMS1.- Set (6) for positioning drawers (T2) for an electrical panel (1) comprising: a vertical busbar (J2) for distributing electrical current to electrical appliances, this busbar comprising several bars, which are arranged in the same vertical plane (P2) and on which it is intended to connect drawers (T2) of the electrical panel, and - several modules (20) for positioning the drawers, which are arranged one above the other and which surround the bars of the vertical busbar, characterized in that: - the positioning modules (20) comprise means (50, 62, 224, 224 ') for increasing the isolation distance between the bars at the interface between two successive modules, this isolation distance corresponding to the length of the electrical ramping path between the bars.
    [0002]
    2. Positioning assembly according to claim 1, characterized in that the increasing means comprise flanks (224, 224 ') for separating the bars of the vertical busbar (J2), between which the ribs insulation (50, 62).
    [0003]
    3. Positioning assembly according to claim 2, characterized in that the insulation ribs (50, 62) have a broken line shape.
    [0004]
    4. An assembly according to one of the preceding claims, characterized in that the insulation distance is equal to 25.4 mm.
    [0005]
    5.- positioning assembly according to one of the preceding claims, characterized in that each positioning module (20) comprises: - a first portion (22), in which are formed openings (220) passage for means of electrical connection of a drawer to the bars (B) of the vertical busbar (J2), - a second part (24), arranged at the rear of the first part, - a shutter (26), which is movable relative at the first part between a closed configuration in which the openings are closed and an open configuration in which the openings are uncovered.
    [0006]
    6. Positioning assembly according to claim 5, characterized in that the shutter (26) is a grid, which is movable horizontally (F3) relative to the first portion (22), in a direction parallel to the vertical plane. (P2) for positioning the bars (B) of the vertical busbar (J2) and which is positioned in the foreground of the module and in that the grid (26) has a plurality of openings (260) and a plurality of bars (262, 264) , of which an end bar (264) is adapted to be hooked to the first part (22) when the shutter is in the closed configuration. 10
    [0007]
    7.- positioning assembly according to claim 6, characterized in that the end bar (264) is removable from the first portion (22) by applying a transverse force (F1) directed generally perpendicularly to the vertical plane (P2 ) in which the bars of the vertical busbar (J2) are placed, in that the end bar (264) has an inclined contact surface (S264) (A1) with respect to this plane, and in that the force applied to pick up the bar also causes a longitudinal displacement (F3) of the gate relative to the first portion (22).
    [0008]
    8. An assembly according to one of claims 5 to 7, characterized in that each module (20) comprises means (228) for returning the shutter (26) in a closed configuration.
    [0009]
    9. An assembly according to claim 8, characterized in that the biasing means comprises a flat spring (228) attached to the first portion (22), which exerts an elastic load force of return of the shutter (26) to its closed configuration. 25
    [0010]
    10.- Electrical panel (1), comprising a cabinet, in which is arranged a horizontal power supply busbar (J1) intended to be connected to a vertical busbar distribution (J2), this table being characterized in that it comprises a positioning assembly (6) of drawers according to one of the preceding claims. 30
    [0011]
    11. A method of mounting a set (6) for positioning drawers according to one of claims 5 to 9, characterized in that it comprises successive steps consisting of: a) lay flat a metal shell (8) ) with a U-shaped cross-section, with both side walls of the casing directed vertically and the outer surface of the bottom of the casing in contact with a flat surface, b) securing the second portion of a first module (20a) inside the casing, at a first end (8a) of the casing, c) assembling the second portions (24) of the other modules (20) one after the other by going from the first end (8a) at a second end (8b), the first and second ends being respectively low and high ends of the envelope in the assembled configuration of the assembly (6) in the electrical panel, d) positioning bars (B) of the vertical busbar in housings (240) of second parts (24) of the modules, e) fixing the first part of the first module (20a) above the bars (B), and f) assembling the first part (22) of the other modules one after the other by going from the first end to the second end.
    类似技术:
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    同族专利:
    公开号 | 公开日
    RU2015113431A3|2018-09-10|
    RU2671965C2|2018-11-08|
    US9608414B2|2017-03-28|
    FR3019943B1|2017-08-25|
    RU2015113431A|2016-10-27|
    BR102015007600B1|2022-02-15|
    CN104979756B|2019-08-20|
    EP2930803A1|2015-10-14|
    CN104979756A|2015-10-14|
    BR102015007600A2|2015-12-29|
    US20150295390A1|2015-10-15|
    EP2930803B1|2016-11-02|
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    FR2792123B1|1999-04-09|2001-05-04|Schneider Electric Ind Sa|ARRANGEMENT OF BARS IN AN ELECTRICAL CELL, AND CELL EQUIPPED WITH SUCH AN ARRANGEMENT OF BARS|
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    EP3454436A1|2017-09-11|2019-03-13|ABB S.p.A.|Compartment-partitioning and busbar-supporting device in a cabinet for a low voltage electrical switchboard|
    EP3490349A1|2017-11-23|2019-05-29|Wöhner GmbH & Co. KG Elektrotechnische Systeme|Busbar power supply apparatus|
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    法律状态:
    2016-04-13| PLFP| Fee payment|Year of fee payment: 3 |
    2017-04-06| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1453275A|FR3019943B1|2014-04-11|2014-04-11|DRAWER POSITIONING ASSEMBLY FOR AN ELECTRICAL BOARD, ELECTRICAL BOARD COMPRISING SUCH AN ASSEMBLY AND METHOD FOR ASSEMBLING THE SAME|FR1453275A| FR3019943B1|2014-04-11|2014-04-11|DRAWER POSITIONING ASSEMBLY FOR AN ELECTRICAL BOARD, ELECTRICAL BOARD COMPRISING SUCH AN ASSEMBLY AND METHOD FOR ASSEMBLING THE SAME|
    US14/670,882| US9608414B2|2014-04-11|2015-03-27|Rack positioning assembly for an electric panel, electric panel comprising one such assembly and method for fitting this assembly|
    BR102015007600-2A| BR102015007600B1|2014-04-11|2015-04-06|Rack positioning kit for an electrical panel, electrical panel and method for mounting this assembly|
    RU2015113431A| RU2671965C2|2014-04-11|2015-04-10|Device for positioning drawers of electrical cabinet, electrical cabinet, comprising one such a device, and method for assembling said device|
    EP15163095.1A| EP2930803B1|2014-04-11|2015-04-10|Drawer positioning assembly for an electric panel, electric panel comprising one such assembly and method for fitting this assembly|
    CN201510172930.XA| CN104979756B|2014-04-11|2015-04-13|Rack positioning component for distribution board, the distribution board including it and equipped method|
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