JPH08205321A - Switch gear - Google Patents

Abstract

PURPOSE: To reduce working hour without limiting the number of wires. CONSTITUTION: A bottom plate 18 is provided between upper panel frame bodies 17 provided in forward and backward directions at the left and right of an upper portion while leaving the front and rear portions of both upper panel frame bodies 17, a wiring room 20 is formed on the bottom plate 18, a low- pressure control wire 14 is wired in forward and backward directions at the wiring room 20, the control wire 14 is brought down from the front and rear edges of the bottom plate 18, and the wiring room 20 is covered with a lid 19 which is also used as a ceiling plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor type and an outdoor type high and low voltage switchgear in which a low voltage control wiring is wired.

[0002]

2. Description of the Related Art A conventional switchgear will be described with reference to FIG. In the figure, 1 is a switchgear box, 2 and 3 are front and rear doors that open and close the front and back openings of the box 1, respectively, and 4 and 5 are front parts inside the box 1. Ground transformers and circuit breakers installed above and below, 6 are lower board frames made of U-shaped steel (groove-shaped steel) with upper surfaces opened in the front and rear directions on the left and right of the bottom of the box 1. A body, 7 is an upper board frame body made of U-shaped steel which is provided in the front and rear direction on the left and right of the upper part of the box body 1 and has a lower surface opened, and 8 is a cross section L in which one piece closes the upper surface of the lower board frame body 6. A lid having a shape of the shape, 9 is a bolt for fixing the other piece of the lid 8 to the side wall of the box body 1, 10 is a lid having an L-shaped cross section in which one piece closes the lower surface of the upper board frame body 7, and 11 is the other piece of the lid 10. The bolts are fixed to the side wall of the box body 1, and the lids 8 and 10 cover the board frame bodies 6 and 7 except for the front and rear portions of the board frame bodies 6 and 7.

Reference numeral 12 denotes a control cable drawn from the bottom surface of the rear portion of the box body 1, reference numeral 13 denotes a pull-in terminal block provided at the rear portion of the box body 1 and having a control cable 12 connected to the back surface thereof, 14
Is a plurality of low-voltage control wirings whose rear end is connected to the front surface of the pull-in terminal block 13, and is distributed to the upper and lower sides and to the left and right sides, and the upper and lower board frame bodies 7 and 6 and the lid 10, Wiring is provided in the upper, lower, left and right spaces surrounded by 8 and the front end is located in the front part of the box 1. 15 and 16 are on the front part of the box 1,
An inter-box relay terminal block and a door-crossing terminal block that are provided below and connected to the front end of the wiring 14.

[0004]

In the conventional switchgear, the switchgear is surrounded by the panel frames 6 and 7 and the lids 8 and 10.
Since the control wiring 14 is wired in the lower left and right spaces,
There is a problem in that the number of wirings 14 is limited and the necessary number of wirings 14 is often forced. further,
It is necessary to consider which control wiring 14 is to be routed to the upper, lower, left and right portions, and there is a problem that the working time becomes long. The present invention has been made in view of the above points, and an object thereof is to provide a switchgear in which the number of wires is not limited and the working time is shortened.

[0005]

In order to solve the above-mentioned problems, a switchgear according to the present invention includes a front and a rear of both upper board frames between the upper board frames provided on the left and right of the upper part in the front-rear direction. Section and rear part are left behind, a wiring board is formed on the bottom board, low-voltage control wiring is wired in the wiring room in the front-rear direction, and control wiring is lowered from the front and rear edges of the bottom board to ceiling the wiring room. It is covered with a lid that also serves as a plate.

[0006]

The switchgear according to the present invention constructed as described above has a bottom plate between the upper board frames provided on the left and right of the upper part in the front-rear direction while leaving the front and rear parts of both upper board frames. Is provided
A wiring room is formed on the bottom plate, low-voltage control wiring is wired in the front-back direction in the wiring room, the control wiring is lowered from the front and rear edges of the bottom plate, and the wiring room is covered with a lid that also serves as a ceiling board. The cross-sectional area of the wiring chamber can be increased, the number of wirings is not limited, and it is not necessary to consider which part the wirings should be routed through, which shortens the working time. Furthermore, since the low-voltage control wiring is isolated from the main circuit, it is possible to easily change only the low-voltage control wiring.

[0007]

EXAMPLE One example will be described with reference to FIG.
In the figure, the same reference numerals as those in FIG. 3 indicate the same or equivalent elements, and the different points are as follows. Reference numeral 17 is an upper board frame body made of U-shaped steel provided in the front and rear directions on the left and right of the top of the box body 1. The respective openings face each other, and the height of the board frame body 17 is about 50 mm. Reference numeral 18 denotes a bottom plate provided between the lower pieces of both upper board frames 17 leaving the front part and the rear part of both upper board frames 17, and 19 denotes both upper board frames 17.
A wiring chamber 20 is formed by the upper board frame 17, the bottom plate 18, and the lid 19, and the lid 19 also serves as the ceiling plate of the switch gear.

Then, the low-voltage control wiring 14 is laid in the wiring chamber 20 in the front-rear direction, and the control wiring 14 is lowered downward from the front edge and the rear edge of the bottom plate 18. The rear ends are connected to the inter-box relay terminal block 15, the door crossing terminal block 16 and the retractable terminal block 13, respectively.

Next, another embodiment will be described with reference to FIG. This figure shows a case where a ventilation hole is required in the switchgear, and a bent piece 21 by cutting and raising to the left and right is formed in the center of the bottom plate 18 of the wiring room 20, and a bottom plate ventilation hole 22 is formed. A lid ventilation hole 23 is formed above the bottom plate ventilation hole 22 of the lid 19 to perform ventilation with the outside. This time,
Each wiring 14 is dispersed on the outside of both bent pieces 21 and is isolated from both ventilation holes 22 and 23.

[0010]

Since the present invention is configured as described above, it has the following effects. In the switchgear of the present invention, a bottom plate 18 is provided between the upper board frames 17 provided on the left and right of the upper part in the front-rear direction, leaving the front part and the rear part of both upper board frames 17 on the bottom plate 18. The wiring chamber 20 is formed in the wiring chamber 20, and the low-voltage control wiring 14 is wired in the wiring chamber 20 in the front-rear direction.
Since the wiring chamber 20 is covered with the lid 19 that also serves as a ceiling plate, the cross-sectional area of the wiring chamber 20 can be increased and the number of wirings 14 is not limited. It is not necessary to consider whether to pass through, and work time can be shortened. Further, since the low-voltage control wiring 14 is isolated from the main circuit, it is possible to easily change only the low-voltage control wiring 14.

[Brief description of drawings]

1A and 1B are a cutaway front view and a cut side view of a part of one embodiment of the present invention.

2A and 2B are a partially cutaway front view and a partially cutaway plan view, respectively, of another embodiment of the present invention shown in FIG.

3A and 3B are a cutaway front view and a cut side view of a part of a conventional example.

[Explanation of symbols]

 14 Control Wiring 17 Upper Board Frame 18 Bottom Plate 19 Lid 20 Wiring Room

Claims (1)

[Claims] 1. A bottom plate is provided between upper board frames provided on the left and right of the upper part in the front-rear direction, leaving front and rear parts of both upper board frames, and a wiring chamber is formed on the bottom board. A switchgear in which low-voltage control wiring is wired in the front-back direction in the wiring chamber, the control wiring is lowered from the front edge and the rear edge of the bottom plate, and the wiring chamber is covered with a lid that also serves as a ceiling plate.