CN202930786U - Substation maintenance power box - Google Patents

Abstract

Disclosed is a source chamber for transformer substation maintenance, comprising a box body and a box door, wherein the box door is installed upon the box body; the box body is internally provided with a circuit board; each branch circuit is electrically connected with a leakage protector; and the leakage protector is installed inside the box body. The source chamber of the utility model features reasonable design, simple structure, high practicality, and secure usage. The employment of this source chamber can meet the regulation that the branch circuit switch of the source chamber for maintenance shall be equipped with residual current motion protector (leakage protector) listed in Power System Safety Work Regulations (power transformation section) by the State Grid Corporation of China. Moreover, after the wiring operation, the source chamber door can be normally closed and the cables can be fixed in order.

Description

Substation maintenance power box

technical field

The utility model relates to the self-use power part of a substation in the field of electric power, in particular to a substation maintenance power supply box.

Background technique

At present, the standards for maintenance power boxes in substations are not uniform, and the existing maintenance power boxes usually have two main defects: 1. Some maintenance power boxes do not meet the requirements of the "maintenance power The branch circuit switch of the power box should be equipped with a residual current action protector (leakage protector), which has potential safety hazards; 2. Most of the wiring is directly connected at the lower port of the air circuit breaker, which is not safe, and the power supply must be repaired after wiring The door cannot be closed, and the wiring is easy to fall off.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a substation maintenance power supply box which can reduce potential safety hazards and ensure firm wiring.

The utility model solves its technical problem and realizes through the following technical solutions:

A substation inspection and maintenance power supply box, including a box body and a box door, the box door is installed on the box body, and a circuit board is installed in the box body. in vivo.

Moreover, the end of each branch circuit is electrically connected to a terminal or a socket, and the terminal or socket is installed on the supporting frame in the box.

Moreover, a wire inlet hole is formed in the lower part of the left side wall and the right side wall of the box body, and a fixing device is installed on the box inner wall at the side of each wire inlet hole.

Moreover, the fixing device is a horizontally placed U-shaped hook, and one of the straight arms of the hook is installed on the inner wall of the box.

Moreover, an end cover for covering the wire inlet hole is installed on the outer wall of the box body.

Advantage and beneficial effect of the present utility model are:

1. Leakage protectors are installed on each branch of the overhaul power box, which complies with safety regulations, reduces potential safety hazards, and prolongs the service life of power equipment.

2. Terminals or sockets are installed at the end of each branch of the maintenance power box, so the wiring is safe and reliable, and it is not easy to fall off.

3. The lower part of the side wall of the maintenance power box has a round hole for the incoming wire, which is not only convenient for wiring, but also the door of the box can be closed normally after wiring.

4. A fixing device is installed on the inner wall of the maintenance power box, and the fixing device can fix the cable to prevent it from falling off. In addition, after using the fixing device, it can also ensure that the wiring inside the box is neat and standardized.

5. The end cover installed on the outer wall of the maintenance power box can cover the inlet hole, prevent dust or rainwater from entering the box, and keep the appearance of the box beautiful.

6. The utility model is a substation maintenance power box with reasonable design, simple structure, strong practicability and safe use. Using this power box can not only meet the requirements of "power safety work regulations (substation part)" of the State Grid Corporation of China. The branch switch of the maintenance power supply box should be equipped with a residual current action protector (leakage protector), and after wiring, the maintenance power supply box door can be closed normally, and the cables can be fixed neatly.

Description of drawings

Fig. 1 is the front view of the utility model;

Figure 2 is the left view of Figure 1 (the end cover fastened to the wire inlet hole is omitted);

Fig. 3 is the front view of the utility model (omitting the cabinet door);

Fig. 4 is the A-A direction sectional view of Fig. 3;

Figure 5 is a wiring diagram of the maintenance power box.

In the figure, HK1 and HK2 are knife switches, ZK1-ZK4 are automatic switches, CZ1 is a single-phase three-hole socket, CZ2 is a one-way two-hole socket, CZ3 is a three-phase three-hole socket, and CZ4 is a three-phase four-hole socket.

Detailed ways

The utility model is described in further detail below through specific examples, the following examples are only descriptive, not limiting, and cannot limit the protection scope of the utility model with this.

A substation maintenance power supply box includes a box body 1 and a box door 2, the box door is installed on the box body, and a support frame 7 and a circuit board are installed in the box body. Ventilation devices 10 are arranged on the top of the left side wall and the right side wall of the casing. The innovation of the utility model is that each branch circuit is electrically connected to the leakage protector 5, and the leakage protector is installed on the supporting frame in the box. The end of each branch circuit is electrically connected to the terminal 8 or the socket 6, and the terminal or the socket is installed on the support frame in the box.

A wire inlet 4 is respectively made on the bottom of the left side wall and the right side wall of the casing, and an end cover 3 for covering the wire inlet is installed on the outer wall of the casing. A fixing device is installed on the inner wall of the box on the side of each wire inlet hole. The fixing device is a horizontally placed U-shaped hook 9, and one of the straight arms of the hook is installed on the inner side wall of the box by screws.

Claims (5)

1. a station power supply box, comprise casing and chamber door, and chamber door is arranged on casing, mounting circuit boards in casing, and it is characterized in that: every branch road all is electrically connected to earth leakage protective device, and this earth leakage protective device is arranged in casing.

2. station power supply box according to claim 1, it is characterized in that: the end of described every branch road all is electrically connected to binding post or socket, and this binding post or socket are installed on bracing frame in casing.

3. station power supply box according to claim 1, it is characterized in that: an entrance hole is all made in the bottom of described casing left side wall and right side wall, and a fixture all is installed on the cabinet wall of each entrance hole side.

4. station power supply box according to claim 3 is characterized in that: described fixture is the U-shaped hook of a horizontal positioned, and one of them straight-arm of this hook is arranged on the box inside wall.

5. station power supply box according to claim 1 is characterized in that: the outer wall of described casing is installed the end cap that is used for hiding entrance hole.

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