JP6771702B1 - Switchboard equipment - Google Patents

Abstract

A switchboard device (100) including a first switchboard (1) and a plurality of second switchboards (2) to which electric power is supplied via the first switchboard (1). A plurality of second switchboards (1) are provided with a conductor drawn from the outside into the switchboard (1) and a connecting conductor (3) connected to the conductor and branched to the second switchboard (2). 2) is arranged around the center of the first switchboard (1).

Description

The present application relates to a switchboard device.

Many motors are used to operate pumps or machinery used in plants such as factories, water and sewage systems, or power plants. In order to centrally manage the control, protection, measurement, and monitoring of these motor groups in one place, for example, a control center is widely used as a switchboard containing a plurality of functional units in which control devices are unitized. A plurality of switchboards are arranged in the electric room in the plant to perform electrical control on the motor group. Power is supplied to each functional unit in the switchboard via horizontal conductors and vertical conductors provided in the switchboard. The horizontal conductor supplies the power supplied from the upper power supply source to the vertical conductor connected to the horizontal conductor. The vertical conductor splits power into each functional unit. The contacts provided in each functional unit are connected to vertical conductors.

As an arrangement of a plurality of switchboards, a configuration in which they are arranged in a row in the board width direction is disclosed (see, for example, Patent Document 1). When the switchboards are arranged in a row, the power received from the higher power supply source in at least one switchboard is supplied to the other switchboards via the horizontal conductor inside each switchboard. Since the switchboards are arranged in a row, a connecting conductor for connecting the horizontal conductor in the switchboard and the horizontal conductor in another adjacent switchboard is provided.

JP-A-2018-98867

In the arrangement in Patent Document 1, a horizontal conductor and a connecting conductor for connecting the horizontal conductors are required inside the switchboard. However, when a horizontal conductor and a connecting conductor are provided, a large number of conductors are used. There is a problem that the air temperature rises, and eventually the temperature inside the switch panel rises. Due to the temperature rise, the number of functional units that can be stored and the number of control devices in the functional units are limited.

In addition, when a plurality of switchboards are arranged in a row in the board width direction, the left and right side surfaces of the switchboard are in contact with the adjacent switchboard, so that heat is not dissipated by radiation from the left and right side surfaces, and the temperature inside the switchboard rises. There was a problem.

The present application has been made to solve the above-mentioned problems, and an object of the present application is to obtain a switchboard device that suppresses a temperature rise inside the switchboard.

The switchboard device disclosed in the present application is a switchboard device including a first switchboard and three or more second switchboards to which power is supplied via the first switchboard, and is the first switchboard device. Each side surface of the first switchboard is provided with a conductor drawn from the outside into the switchboard 1 and a connecting conductor connected to the switchboard and branched to be connected to the second switchboard. It is a flat surface, and a plurality of the second switchboards are arranged around the first switchboard in contact with the side surface .

According to the switchboard apparatus disclosed in the present application, it is possible to suppress a temperature rise inside the switchboard.

It is a perspective view which shows the appearance of the switchboard apparatus which concerns on Embodiment 1. FIG. It is a top view of the switchboard apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the appearance of the 1st switchboard provided in the switchboard apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the outline of the structure inside the 1st switchboard provided in the switchboard apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the outline of the conductor connection structure of a part of the switchboard apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the outline of the branching conductor provided in the switchboard apparatus which concerns on Embodiment 1. FIG. It is a top view of another switchboard apparatus which concerns on Embodiment 1. FIG. It is a perspective view which shows the appearance of the switchboard apparatus which concerns on Embodiment 2. FIG. It is a perspective view which shows the outline of the conductor connection structure of a part of the switchboard apparatus which concerns on Embodiment 2. FIG. It is a perspective view which shows the appearance of the switchboard apparatus which concerns on Embodiment 3. It is a top view of the switchboard apparatus which concerns on Embodiment 3. It is a top view of another switchboard apparatus which concerns on Embodiment 3. FIG. It is a perspective view which shows the outline of the branching conductor provided in the switchboard apparatus which concerns on Embodiment 3. FIG. It is a top view of the switchboard apparatus which concerns on Embodiment 4. FIG. It is a perspective view which shows the appearance of the 1st switchboard provided in the switchboard apparatus which concerns on Embodiment 4. FIG. It is a top view of another switchboard apparatus which concerns on Embodiment 4. FIG. It is a top view of another switchboard apparatus which concerns on Embodiment 4. FIG. It is a top view of the switchboard apparatus which concerns on embodiment 5. It is a top view of the switchboard apparatus which concerns on Embodiment 6. It is a top view of another switchboard apparatus which concerns on Embodiment 6.

Hereinafter, the switchboard device according to the embodiment of the present application will be described with reference to the drawings, but the same or corresponding members and parts will be described with the same reference numerals in each drawing.

Embodiment 1.
FIG. 1 is a perspective view showing the appearance of the switchboard device 100, and FIG. 2 is a top view of the switchboard device 100. The switchboard device 100 includes a first switchboard 1 and five second switchboards 2 to which electric power is supplied via the first switchboard 1. The five second switchboards 2 are arranged around the center 20 of the first switchboard 1. Electric power is supplied from the first switchboard 1 to the vertical conductor 2b inside the second switchboard 2 via the connecting conductor 3. The connecting conductor 3 is connected to a conductor drawn from the outside to the first switchboard 1, and is branched and connected to the second switchboard 2. In FIG. 2, only one vertical conductor 2b is shown inside the second switchboard 2, and only one connecting conductor 3 connected to the vertical conductor 2b is schematically shown, but the connecting conductor 3 and the vertical conductor 3 are shown. The number of conductors 2b is a number corresponding to the number of poles drawn into the first switchboard 1. Each side surface 2a of the five second switchboards 2 facing the side surface 1a of the first switchboard 1 is in contact with the first switchboard 1. The switchboard device 100 is arranged in an electric room in the plant so that the second switchboard 2 can perform electrical control on, for example, a motor group. The conductor drawn from the outside into the first switchboard 1 may be drawn in via the second switchboard 2.

The first switchboard 1 will be described. FIG. 3 is a perspective view showing the appearance of the first switchboard 1 provided in the switchboard device 100, FIG. 4 is a perspective view showing an outline of the internal configuration of the first switchboard 1, and FIG. 5 is a partial conductor of the switchboard device 100. It is a perspective view which shows the outline of the connection structure. The first switchboard 1 is a switchboard for attracting and receiving power. The shape of the housing of the first switchboard 1 is a hexagonal column, and the six side surfaces 1a provided by the first switchboard 1 are flat. A second switchboard 2 is arranged in contact with each of the five side surfaces 1a among the six side surfaces 1a. As shown in FIG. 2, the side surface on which the second switchboard 2 is not arranged is an operation surface 1b for an operator or the like to operate the first switchboard 1. For example, the operator performs the operation of shutting off the circuit breaker 7 provided inside the first switchboard 1 from the operation surface 1b.

As shown in FIG. 4, a conductor for three poles is drawn into the first switchboard 1 as a primary side conductor 5 from an external power supply source (not shown). FIG. 4 shows a configuration in which the primary side conductor 5 is pulled into the inside of the first switchboard 1 from below, but the present invention is not limited to this, and the primary side conductor 5 is pulled in from above the first switchboard 1. The configuration may be used. Further, the number of poles of the primary side conductor 5 is not limited to 3 poles, and may be 4 poles. The primary conductor 5 is connected to the circuit breaker 7, and the secondary conductor 6 is pulled out from the circuit breaker 7. A branching conductor 4 is provided at each end of the secondary conductor 6. An example of a specific structure of the branching conductor 4 is shown in FIG. FIG. 6 is a perspective view showing an outline of the branching conductor 4. The branching conductor 4 is formed of, for example, a conductive metal plate. The branching conductor 4 has a connecting portion 4a connected to the secondary conductor 6 and a branching portion 4b separated from the connecting portion 4a and extended. The connecting portion 4a is provided with four connecting holes 4c in the center, and the secondary side conductor 6 is connected by, for example, screwing using these holes. As shown in FIG. 5, a plurality of connecting conductors 3 are provided, one end of which is connected to the branch portion 4b and the other end of which is connected to the vertical conductor 2b of the second switchboard 2. The connecting conductor 3 is provided according to the number of the arranged second switchboards 2. FIG. 5 shows a branching conductor 4 and a connecting conductor 3 that supply electric power to two second switchboards 2 arranged adjacent to each other. The number of connecting conductors 3 corresponding to the number of poles (three in the present embodiment) is connected to one second switchboard 2. As shown in FIG. 6, the branch portion 4b includes two connection holes 4d, and the connection conductor 3 is connected by, for example, screwing using each hole. By using the branching conductor 4, the plurality of second switchboards 2 are connected in parallel with the first switchboard 1 according to the number of the arranged second switchboards 2.

The second switchboard 2 will be described. As shown in FIG. 1, the second switchboard 2 houses a plurality of functional units 8 in which control devices are unitized in order to centrally manage control, protection, measurement, and monitoring of motor groups at one location. The front surface exposed to the outside of the functional unit 8 is an operation surface 8a for an operator or the like to operate the functional unit 8. In FIG. 1, five functional units 8 are housed in one second switchboard 2, but the number and size of the functional units 8 stored is not limited to this. A contact (not shown) provided on the back side of the functional unit 8 and the vertical conductor 2b are connected to supply electric power to the functional unit 8.

Note that FIG. 1 shows the first switchboard 1 having a hexagonal prism shape, and the second switchboard 2 is arranged on the five side surfaces 1a, but the shape of the first switchboard 1 is not limited to this. However, for example, a pentagonal prism or a rectangular parallelepiped may be used depending on the number of second switchboards 2 arranged around the board.

Further, each side surface 2a of the plurality of second switchboards 2 is configured to be in contact with the side surface 1a of the first switchboard 1, but the present invention is not limited to this, and as shown in FIG. 7, the first switchboard 1 Each side surface 2a of the five second switchboards 2 facing the side surface 1a may be separated from the first switchboard 1. Since the connecting conductor 3 is partially exposed and arranged between the first switchboard 1 and the second switchboard 2, a protective body 3a formed of an insulator is provided at the exposed portion. By arranging the plurality of second switchboards 2 in this way, the area exposed to the outside in the second switchboard 2 increases, so that heat dissipation by radiation from the second switchboard 2 is promoted.

As described above, in the switchboard device 100 according to the first embodiment, a plurality of second switchboards 2 are arranged around the center 20 of the first switchboard 1, and a connecting conductor is connected to the first switchboard 1 to the second switchboard 2. Since the electric power is directly supplied through the switchboard 3, the horizontal conductors required in the conventional one-row arrangement become unnecessary, and the temperature rise inside the switchboard device 100 can be suppressed. Further, since the second switchboard 2 is in contact with the side surface 1a of the first switchboard 1 only on one side surface, the exposed area of the second switchboard 2 increases, and heat is dissipated by radiation from the second switchboard 2. Is promoted, and the temperature rise inside the switchboard device 100 can be suppressed. Further, since a plurality of second switchboards 2 are arranged around the first switchboard 1, the electric room does not need a floor surface that is remarkably long in the board width direction, which is required in the conventional one-row arrangement, and the shape of the electric room. , And the degree of freedom of arrangement of the switchboard device 100 can be improved according to the size. Further, when each side surface 1a provided by the first switchboard 1 is a flat surface and a plurality of second switchboards 2 are arranged in contact with the side surface 1a around the first switchboard 1, the floor on which the switchboard device 100 is installed. It is possible to improve the seismic resistance of the switchboard device 100 against an impact in a direction parallel to the surface.

Embodiment 2.
The switchboard device 100 according to the second embodiment will be described. FIG. 8 is a perspective view showing the appearance of the switchboard device 100. The switchboard device 100 according to the second embodiment has a configuration in which a plurality of second switchboards 2 are arranged around the center 20 of the first switchboard 1 on the upper surface 1c of the first switchboard 1.

In the first embodiment, the second switchboard 2 is arranged on the side surface 1a around the first switchboard 1, but if power can be directly supplied from the first switchboard 1 to the second switchboard 2, the second switchboard 2 The arrangement of is not limited to the side surface 1a of the first switchboard 1. As shown in FIG. 8, a plurality of second switchboards 2 may be arranged on the upper surface 1c of the first switchboard 1. The connecting portion 9 is a plate that is connected to a plurality of second switchboards 2 by, for example, screwing, in order to prevent the second switchboard 2 from tipping over. The connecting portion 9 does not have to be a plate that covers the entire plurality of second switchboards 2, and may be a plate having a size for connecting adjacent second switchboards 2.

Further, the branching conductor 4 may be provided inside the first switchboard 1 as in the first embodiment, but the installation location of the branching conductor 4 is not limited to this, and as shown in FIG. It may be provided in the space 21 above the first switchboard 1 surrounded by the plurality of second switchboards 2. In FIG. 9, only two second switchboards 2 are arranged to show the branching conductor 4, but in the shape of the first switchboard 1, six second switchboards 2 are arranged on the upper surface 1c. be able to.

As described above, in the switchboard device 100 according to the second embodiment, since the plurality of second switchboards 2 are arranged on the upper surface 1c of the first switchboard 1, the area exposed to the outside in the second switchboard 2 is large. The number increases, heat dissipation due to radiation from the second switchboard 2 is promoted, and the temperature rise inside the switchboard device 100 can be suppressed.

Embodiment 3.
The switchboard device 100 according to the third embodiment will be described. FIG. 10 is a perspective view showing the appearance of the switchboard device 100, and FIG. 11 is a top view of the switchboard device 100. The switchboard device 100 according to the third embodiment has a configuration in which two second switchboards 2 are arranged on the side surface 1a of the first switchboard 1.

The first switchboard 1 will be described. The shape of the housing of the first switchboard 1 is a rectangular parallelepiped, and the four side surfaces 1a are flat. The six second switchboards 2 are arranged around the center 20 of the first switchboard 1. The side surface 1a on which the second switchboard 2 is not arranged is an operation surface 1b for an operator or the like to operate the first switchboard 1. For example, the operator performs an operation of shutting off the circuit breaker provided inside the first switchboard 1 from the operation surface 1b.

The second switchboard 2 will be described. Of the four side surfaces 1a of the first switchboard 1, two second switchboards 2 are arranged on each of the three side surfaces 1a. As shown in FIG. 11, the two second switchboards 2 arranged on one side surface 1a are arranged so that the operation surfaces 8a do not face each other. This is because the operation surface 8a can be easily visually recognized by an operator or the like, and the operation performed from the operation surface 8a of the functional unit 8 can be smoothly performed. Further, the opposing side surfaces 2a of the two second switchboards 2 arranged on one side surface 1a are arranged apart from each other, and are in contact with the first switchboard 1 on the side surface 2c having a small area. By arranging the two second switchboards 2 in this way, the area exposed to the outside in the second switchboard 2 increases, so that heat dissipation by radiation from the second switchboard 2 is promoted. Electric power is directly supplied from the first switchboard 1 to the vertical conductor 2b provided inside the second switchboard 2 via the connecting conductor 3.

The two second switchboards 2 arranged on one side surface 1a are arranged so as to face each other, but the arrangement of the two second switchboards 2 is not limited to this, and is shown in FIG. As described above, the facing side surfaces 2a of the second switchboard 2 may be arranged in contact with each other. By arranging in this way, the installation space of the switchboard device 100 can be reduced. Further, at least one of the plate-shaped covers provided on both of the opposite side surfaces 2a of the second switchboard 2 becomes unnecessary.

Further, FIG. 13 shows an example of a specific structure of the branching conductor 4 used in the present embodiment. FIG. 13 is a perspective view showing an outline of the branching conductor 4. The branching conductor 4 is formed by bending, for example, from a conductive metal plate. The second switchboard 2 is arranged in the direction of the broken line arrow shown in FIG. 13, and the connecting conductor 3 is provided in the branch portion 4b using the connecting hole 4d in that direction.

As described above, in the switchboard device 100 according to the third embodiment, since the two second switchboards 2 are arranged on one side surface 1a of the first switchboard 1, the first switchboard 1 is the number of side surfaces 1a. The number of the second switchboards 2 equal to or larger than the number of the side surface 1a can be arranged around the first switchboard 1 even if the housing shape is small. Further, when the opposite side surfaces 2a of the two second switchboards 2 arranged on one side surface 1a are arranged apart from each other, the area exposed to the outside in the second switchboard 2 increases, so that the second switchboard 2 It is possible to promote heat dissipation due to radiation from the switchboard 2.

Embodiment 4.
The switchboard device 100 according to the fourth embodiment will be described. FIG. 14 is a top view of the switchboard device 100, and FIG. 15 is a perspective view showing the appearance of the first switchboard 1 provided in the switchboard device 100. In the switchboard device 100 according to the fourth embodiment, the side surface 1a of the first switchboard 1 is a curved surface.

The first switchboard 1 will be described. As shown in FIG. 15, the shape of the housing of the first switchboard 1 is a cylinder, and the side surface 1a provided by the first switchboard 1 is a curved surface. As shown in FIG. 14, five second switchboards 2 are arranged around the center 20 of the first switchboard 1 so as to surround the side surface 1a. The side surface on which the second switchboard 2 is not arranged is an operation surface 1b for an operator or the like to operate the first switchboard 1. For example, the operator performs an operation of shutting off the circuit breaker provided inside the first switchboard 1 from the operation surface 1b.

The second switchboard 2 will be described. The second switchboard 2 is arranged so that the operation surface 8a faces outward. This is because the operation surface 8a can be easily visually recognized by an operator or the like, and the operation performed from the operation surface 8a of the functional unit 8 can be smoothly performed. The second switchboard 2 is arranged so that a part of the side surface 2a, which is the back surface of the operation surface 8a, is in contact with the side surface 1a. Since the side surface 1a is a curved surface, the area exposed to the outside in the second switchboard 2 increases, and heat dissipation by radiation from the second switchboard 2 is promoted. Further, since the side surface 1a is a curved surface, the degree of freedom in arranging the second switchboard 2 is improved, and after the switchboard device 100 is installed, the second switchboard 2 is added according to the size of the outer shape of the first switchboard 1. It is also possible.

Note that FIG. 14 shows a first switchboard 1 having a cylindrical housing shape, and five second switchboards 2 are arranged on the side surface 1a, but the shape of the first switchboard 1 is not limited to this. For example, as shown in FIG. 16, the cross-sectional shape of the first switchboard 1 parallel to the floor surface on which the first switchboard 1 is installed may be elliptical. The shape of the first switchboard 1 and the layout of the second switchboard 2 can be determined according to the shape of the electric room in which the switchboard device 100 is arranged. Further, although the second switchboard 2 is arranged so that the operation surface 8a faces outward, the arrangement of the second switchboard 2 is not limited to this. For example, as shown in FIG. 17, the operation surface 8a is on the side surface 1a. It may be arranged so as to be perpendicular to the vertical. If the arrangement is vertical, more second switchboards 2 can be arranged. When the operation surfaces 8a are arranged so as to face each other, the operator or the like can visually recognize the operation surface 8a without going around the switchboard device 100.

As described above, in the switchboard device 100 according to the fourth embodiment, since the side surface 1a of the first switchboard 1 is a curved surface, the degree of freedom in arranging the second switchboard 2 can be improved. Further, since the exposed area of the second switchboard 2 increases, it is possible to promote heat dissipation by radiation from the second switchboard 2. When the second switchboard 2 is arranged so that the operation surface 8a is perpendicular to the side surface 1a, more second switchboards 2 can be arranged.

Embodiment 5.
The switchboard device 100 according to the fifth embodiment will be described. FIG. 18 is a top view of the switchboard device 100. The switchboard device 100 according to the fifth embodiment includes two first switchboards 10 and 11.

The first switchboards 10 and 11 will be described. In the switchboard device 100, two first switchboards 10 and 11 are arranged adjacent to each other. The first switchboards 10 and 11 are switchboards for receiving power. The shape of the housing of the first switchboards 10 and 11 is a hexagonal column, and each of the six side surfaces 1a is a flat surface. In the first switchboard 10, the second switchboard 2 is arranged on each of the five side surfaces 1a out of the six side surfaces 1a. The first switchboard 10 is in contact with the first switchboard 11 on the side surface 1a where the second switchboard 2 is not arranged. In the first switchboard 11, the second switchboard 2 is arranged on each of the three side surfaces 1a out of the six side surfaces 1a. The side surface 1a on which the second switchboard 2 is not arranged is an operation surface 1b for an operator or the like to operate the first switchboards 10 and 11. For example, the operator performs an operation of shutting off the circuit breaker provided inside the first switchboards 10 and 11 from the operation surface 1b.

In FIG. 18, the two first switchboards 10 and 11 are arranged adjacent to each other, but the number of the first switchboards adjacent to each other is not limited to this, and a plurality of first switchboards are arranged adjacent to each other. However, the side surface 1a on which the second switchboard 2 can be arranged may be increased. Further, for example, a plurality of first switchboards having different shapes may be arranged adjacent to each other depending on the shape of the electric room or the number of the second switchboards 2 to be arranged.

As described above, in the switchboard device 100 according to the fifth embodiment, since the two first switchboards 10 and 11 are arranged adjacent to each other, the side surface 1a on which the second switchboard 2 can be arranged can be increased. ..

Embodiment 6.
The switchboard device 100 according to the sixth embodiment will be described. FIG. 19 is a top view of the switchboard device 100. In the switchboard device 100 according to the sixth embodiment, the first switchboard 1 is the same as that of the first embodiment, and the shape of the second switchboard 2 is different from that of the first embodiment.

The second switchboard 2 will be described. Five second switchboards 2 are arranged around the center 20 of the first switchboard 1. The shape of the housing of the second switchboard 2 is a hexagonal column, and the adjacent side surfaces 2d of the five second switchboards 2 are in contact with each other. The second switchboard 2 is arranged in a honeycomb shape, and a switchboard device 100 integrated by eliminating unnecessary space can be provided in the electric room.

In FIG. 19, the shape of the housing of the second switchboard 2 is a hexagonal column, and the adjacent side surfaces 2d are in contact with each other. However, the shape of the housing of the second switchboard 2 is not limited to this, for example, FIG. As shown in the above, the shape of the cross section of the second switchboard 2 parallel to the floor surface on which the second switchboard 2 is installed does not have to be a regular polygon.

As described above, in the switchboard device 100 according to the sixth embodiment, since the adjacent side surfaces 2d of the five second switchboards 2 arranged around the first switchboard 1 are in contact with each other, the switchboard device 100 is installed. Impacts in a direction parallel to the floor surface are also dispersed in the second switchboard 2 provided in contact with each other, and the impacts are dispersed in many directions, so that the seismic resistance of the switchboard device 100 can be improved. Further, since the adjacent side surfaces 2d of the second switchboards 2 are in contact with each other, the switchboard device 100 integrated by eliminating wasted space can be provided in the electric room.

The present application also describes various exemplary embodiments and examples, although the various features, embodiments, and functions described in one or more embodiments are those of a particular embodiment. It is not limited to application, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the techniques disclosed herein. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

1 1st switchboard, 1a side surface, 1b operation surface, 1c top surface, 2 second switchboard, 2a side surface, 2b vertical conductor, 2c side surface, 2d side surface, 3 connection conductor, 3a protector, 4 branch conductor, 4a connection , 4b branch, 4c connection hole, 4d connection hole, 5 primary side conductor, 6 secondary side conductor, 7 circuit breaker, 8 functional unit, 8a operation surface, 9 connection part, 10 1st switchboard, 11th 1 switchboard, 20 centers, 21 spaces, 100 switchboard devices

Claims (4)

A first switchboard, a switchboard device having 3 or more and a plurality of second switchboard to which power is supplied, the through the first switchboard,
A conductor drawn from the outside into the first switchboard,
A connecting conductor that is connected to the conductor and is branched and connected to the second switchboard is provided.
Each side surface of the first switchboard is flat.
The second switchboard device is a switchboard device, characterized in that a plurality of the second switchboards are arranged around the first switchboard in contact with the side surface. The switchboard device according to claim 1, wherein adjacent side surfaces of the plurality of second switchboards are in contact with each other. A switchboard device including a first switchboard and a plurality of second switchboards to which power is supplied through the first switchboard.
A conductor drawn from the outside into the first switchboard,
A connecting conductor that is connected to the conductor and is branched and connected to the second switchboard is provided.
The plurality of second switchboards are arranged around the first switchboard and are arranged around the first switchboard.
A switchboard device, characterized in that a plurality of the first switchboards are arranged adjacent to each other. A switchboard device including a first switchboard and a plurality of second switchboards to which power is supplied through the first switchboard.
A conductor drawn from the outside into the first switchboard,
A connecting conductor that is connected to the conductor and is branched and connected to the second switchboard is provided.
The switchboard device, wherein the plurality of second switchboards are arranged around the center of the first switchboard on the upper surface of the first switchboard.

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