JPS6022403A - Switchboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a power distribution board with an improved arrangement of disconnecting sections.

[Background of the invention]

Generally, the inside of a power distribution box is divided into a conductor room and an electrical room via a disconnecting section. The power supply side and load side conductors are arranged within the conductor chamber and connected to one end of the disconnection section. A draw-out electrical device, such as a circuit breaker, enters and exits the electrical room and electrically connects and disconnects from the other end of the disconnecting section. Since the disconnecting section has a sufficient insulation distance to prevent a short circuit between the conductor and the breaker, the horizontal dimension of the disconnecting section becomes long, and the depth dimension of the distribution box becomes long. Furthermore, when considering the depth dimension of the distribution box, the depth dimension becomes longer due to the provision of the conductor chamber.

On the other hand, as the depth increases, especially when performing maintenance and inspection inside the conductor room, there are places where maintenance and inspection cannot be done from the electrical room side, and it is necessary to provide maintenance and inspection space on the back side of the distribution box, which further increases the depth. Therefore, the installation area of the switchboard will be large.

[Purpose of the invention]

An object of the present invention is to provide a power distribution board in which the depth dimension of the power distribution box is reduced.

[Summary of the invention]

The disconnecting section of the present invention has its other end opposite to the drawer-type electrical equipment bent in a direction substantially perpendicular to the direction in which the drawer-type electrical equipment enters and exits, and the other end is supported by a support plate provided in the distribution box. For example, since the support plate is provided in a direction perpendicular to the direction in which the drawer-type electrical equipment enters and exits, the depth dimension of the power distribution box can be reduced by that amount.

[Embodiments of the invention]

Hereinafter, an embodiment of the present invention will be explained using a closed switchboard shown in FIG. 1.2.

The distribution box 1 has a support plate 2.3 attached therein, and forms conductor chambers 5.6 at the upper and lower levels via the electrical chamber 4 at the middle level. The electrical room 4 and the lower conductor room 5 have a hinge 7 attached to one end that can be opened and closed. The electrical room 4 houses a circuit breaker 8 therein. The upper stage conductive chamber 5 is provided with a power supply side bus bar 9, and the lower stage conductive room 5 is provided with a load side cable 10, respectively. The circuit breaker 8, the power supply side busbar 9, and the load side cable 10 are
The connection is via three-phase upper and lower disconnects 11.12.

Upper and lower disconnection sections 1 supported by support plates 2 and 3
The detailed structure of 1.12 is shown in FIG. 3 and will be explained, but since the structures of both disconnecting sections are the same, the lower disconnecting section 12 will be explained. The center conductor 13 bent at right angles from the breaker side to the load cable side is covered with an insulating member 14 to form one end 15 and the other end 16. One end of the center conductor 13 is exposed inside the opening 17 formed in the one end portion 15, and is connected to the contact terminal 8A of the breaker 8 via the contact piece 18. When the breaker 8 moves from the position indicated by the solid line to the position indicated by the chain line, the contact terminal 8A separates from the contact piece 18. In other words, it is the cutoff position. At this time, the shutter 19 closes the opening 17. The other end 16 bent in a right angle direction from the one end side is supported by the support plate 3. A current transformer 20 is installed between the support plate 3 and the other end 16.

The other end 16 of this disconnection section 11.14 is bent perpendicularly from the one end 15 and is supported by the support plate 2.3, so that the depth of the distribution box 1 can be reduced by the amount of the support plate. I can do a little. Furthermore, by arranging the other end 16 perpendicularly to the one end side, the upper and lower conductor chambers 5.6 can be formed above and below the electrical chamber 4, so that the depth can be further reduced. .

On the other hand, the other ends 16 of the two disconnection sections 11.12 extend in opposite directions and are supported by the support plates 2, 3. For this reason,
Since the current transformer 20 is supported by the support plate 3 in the corresponding space 2141 of the painter's end portion 16, the installation work is easy. Also,
Although the current transformer is not shown, it may be inserted into the other end of the upper disconnection section 11 and supported by the support plate 2.

As described above, according to the disconnecting section of the present invention, the depth dimension of the power distribution box can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a closed switchboard shown as an embodiment of the present invention, FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a side sectional view of a lower disconnection section.

Claims (1)

[Claims] 1. When a draw-out electrical device is moved in and out of the distribution box, a disconnecting section connected to the power supply side and load side conductors in the distribution box and supported by a support plate and an electric In devices that can be connected to and separated from each other, the other end of the disconnecting section on the opposite side of the drawer-type electrical equipment should be bent in a direction approximately perpendicular to the direction of entry and exit of the drawer-type electrical equipment, and the other end should be supported by a support plate. Features a switchboard. 2. The switchboard according to claim 1, wherein the support plate forms electrical chambers provided above and below the draw-out electrical device, and conductor chambers above and below the electrical chamber. 3. The switchboard according to claim 1 or 2, characterized in that a transformer is provided between the other end of at least one side and the support plate.