JPH04364308A - High voltage distribution unit - Google Patents

Abstract

PURPOSE:To enhance handling performance of unit at the time of installation or replacement, to facilitate cabling work, and to provide a wide work space. CONSTITUTION:Three phases of a high voltage switch 1 are arranged horizontally from this side toward the rear and high voltage bushings 3c for external connection are installed on the side face of a high voltage switch box 6. The high voltage bushing is provided with function for supporting the high voltage switch.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the construction of power distribution equipment including a high voltage switch connected to a high voltage distribution system and a transformer for stepping down the voltage to a low voltage.

0002

2. Description of the Related Art FIG. 3 is a block diagram showing an example of a conventional power distribution system. In the figure, 1 is a high voltage switch, 2 is a gas insulated transformer, and 3a and 3b are high voltage Bushing and low voltage bushing, 3c is a high voltage bushing for external connection, 4 is a conductor for high voltage connection, 5 is a low voltage bus bar, 6 is a switch box, 7 is a high voltage cable, and 8 is an insulator for fixing the high voltage switch.

Next, this configuration will be explained in more detail. A high voltage bushing 3a and a low voltage bushing 3b are installed on the upper part of the gas insulated transformer 2, and the high voltage switch 1 and the ceiling of the switch box 6 are connected vertically to the high voltage bushing 3a through a high voltage conductor 4 by bolt connection. A high-voltage bushing 3c disposed in the high-voltage bushing 3c and a high-voltage cable 7 are connected in series. On the other hand, a low voltage bus 5 for connecting to a low voltage distribution board is connected to the low voltage bushing 3b.

0004

[Problems to be Solved by the Invention] Conventional high-voltage power distribution equipment is configured as described above, which increases the overall height of the equipment, making material handling and cable installation difficult during installation and replacement. In addition, there were other problems such as poor workability due to the inability to secure space in the height direction during maintenance.

[0005] This invention was made in order to solve the above-mentioned problems, and it is possible to improve material handling and cable installation when installing or replacing equipment, and to improve the ease of cable installation. The purpose is to secure a maintenance space with good work efficiency.

[0006]

[Means for Solving the Problems] A high-voltage power distribution device according to the present invention has a high-voltage switch horizontally arranged in three phases from the front side to the back side in a switch box, and a side surface of the switch box. The high-pressure bushing for external connection provided in the high-pressure switch has a supporting function for the high-voltage switch and is connected to the high-pressure bushing.

[0008]

[Function] In the high-voltage power distribution device according to the present invention, the height can be lowered without changing the horizontal size of the entire device, which improves material handling during installation and replacement, ease of cable installation, and ease of maintenance. Workability can be improved by increasing the space in the height direction.

[0009]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In Fig. 1, 1 is a high-voltage switch that horizontally arranges three phases from the front side to the back side, 3c is a high-pressure bushing for external connection attached to the side of the high-voltage switch box 6, and 9 is this high-pressure bushing 3c. This is a conductor for connecting the high voltage switch 1 and fixing the high voltage switch 1 to the external connection high voltage bushing 3c. 7 is a high voltage cable having an L-shaped cable end, and is connected to the external connection high voltage bushing 3c.

In the high-voltage power distribution device configured as described above, the high-voltage switch 1 has three phases arranged horizontally from the front side to the back side, and a high-voltage bushing 3c for external connection.
By arranging it on the side of the high voltage switch box 6, the height can be reduced. In this case, by providing the external connection high-pressure bushing 3c with the function of fixing the high-voltage switch 1, the horizontal size including the bushing 3c can be manufactured to be the same as the conventional one. It is now possible to reduce the height while maintaining the conventional structure.

Example 2. In the above embodiment, the high-voltage bushing 3c for external connection is a straight type, and the high-voltage cable 7 connected to it is a straight terminal. However, as shown in FIG. 2, the high-voltage bushing 3c for external connection is L-shaped, The cable 7 may be a straight terminal. With this structure, the structure of the high-voltage bushing will be more complicated than in Figure 1, but since the cable can be attached and detached in the vertical direction,
When a plurality of devices of this invention are arranged side by side, the maintenance space between the devices is reduced and the efficiency of arrangement is improved.

0012

[Effects of the Invention] As described above, according to the present invention, the height of the device can be lowered without changing the horizontal size of the entire device, which improves material handling and cable construction during installation and replacement. This has the effect of improving workability by increasing the space in the height direction during maintenance.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing a high-voltage power distribution device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a high-voltage power distribution device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional high voltage power distribution device.

[Explanation of symbols]

1 High voltage switch 2 Gas insulated transformer 3a Gas insulated transformer mounting high voltage bushing 3
b Gas insulated transformer mounting low voltage bushing 4
High voltage connecting conductor 5 Low voltage connecting conductor 6 High voltage switch box 7 High voltage cable 8 Insulator 9 Connecting conductor

Claims (1)

[Claims] 1. A high-voltage power distribution device in which a high-low voltage bushing is arranged above a gas-insulated switch, wherein the high-voltage switch connected to the high-voltage bushing is arranged horizontally in three phases from the front side to the back side, A high-voltage power distribution device characterized in that this is supported and connected to a high-voltage bushing for external connection installed on the side of a switch box.