CN201378694Y - Low voltage withdrawable switchgear - Google Patents

Abstract

The utility model relates to a low-voltage withdrawable switchgear, which comprises a cabinet body, the front part of the left half of the cabinet body is a drawer-type functional unit room, the front part of the right half is a cable room, and the busbar room is located in the drawer-type functional unit room and the cable room Metal plates are used to isolate the rear and drawer-type functional unit rooms, busbar rooms and cable rooms. Advantages: First, the drawer-type functional unit room, cable room, and busbar room are designed to be isolated and independent, which can effectively prevent the extension of the arc and ensure the overall safety of the cabinet; second, the structure is compact, easy to operate, and easy to maintain.

Description

Low voltage withdrawable switchgear

technical field

The utility model relates to a low-voltage withdrawable switchgear, which is mainly used for power conversion, distribution and control of power distribution systems in power plants, Shishan, chemical industry, metallurgy, textiles, high-rise buildings and other industries, power distribution and motor control centers. , which belongs to the field of electric equipment manufacturing.

Background technique

In the existing low-voltage withdrawable switchgear, the division and arrangement of the functional units of the cabinet are not reasonable, which is not only difficult to maintain, but also lacks sufficient safety guarantees and safety measures, which is not conducive to the safe operation and rapid maintenance of the equipment, nor can it be realized Quick assembly and commissioning of equipment, and lack or operability.

Contents of the invention

Design purpose: To avoid the deficiencies in the background technology, to design a low-voltage withdrawable switchgear that is convenient for quick assembly and wiring maintenance.

Design scheme: In order to achieve the above design purpose. 1. The front part of the cabinet is a drawer-type functional unit room and cable room, and the rear part is a busbar room, and the design of separating each room with a metal partition is one of the characteristics of the design of the utility model. The purpose of doing this is to not only achieve the purpose of dividing the cabinet according to the function, increase the independence and safety of each room, but also effectively prevent the extension of the arc, so that the possible faults are limited to a small range , to ensure the overall safety of the cabinet. 2, the design in the drawer type functional unit chamber is two of the feature of the utility model design. The purpose of doing this is: since each drawer is an independent functional unit and is interchangeable, it can be plugged with the incoming and outgoing cables in the cable room, realizing modularized centralized control. 3, the design of the drawer rear cover plate 32 to the auxiliary contact and the operating handle is three of the characteristics of the utility model design. The purpose of doing this is to not only meet the needs of automation users and interface with the computer, but also make the operating handle have the functions of mechanical interlock and electrical interlock to increase the safety of operation. 4. The main busbar in the busbar room adopts the design of counter horizontal arrangement, which is the fourth feature of the design of the utility model. The purpose of doing this is to not only enhance the ability of the busbar to resist electric power, but also enable the main circuit of the device to have the ability to carry short-circuit current intensity. 5. The design of the upper and lower outlet channels in the cable chamber is five of the design features of the present invention. The purpose of doing this is to solve the problem that the old-fashioned switchgear cannot be connected to the outgoing line, and it is more convenient to use.

Technical solution: Low-voltage withdrawable switchgear, which includes a cabinet body. The front part of the left half of the cabinet is a drawer-type functional unit room, and the front part of the right half is a cable room. The busbar room is located at the rear of the drawer-type functional unit room and the cable room. The drawer-type functional unit room, the busbar room and the cable room are separated by metal plates.

Compared with the background technology, the utility model has the following advantages: one is that the drawer-type functional unit room, the cable room and the busbar room are designed to be isolated and independent, which effectively prevents the extension of the arc and ensures the overall safety of the cabinet; the other is that the structure is compact and easy to operate. Simple and convenient for maintenance.

Description of drawings

Figure 1 is the front view of the low-voltage withdrawable switchgear.

Figure 2 is a side view of the low-voltage withdrawable switchgear.

Fig. 3 is a schematic diagram of the operating handle of the drawer cabinet.

Detailed ways

Embodiment 1: with reference to accompanying drawing 1～3. The low-voltage withdrawable switch cabinet includes a cabinet body 5, and the main frame of the cabinet body is assembled or partially welded with open section steel. The front part of the left half of the cabinet body 5 is the drawer-type functional unit room 1, the front part of the right half is the cable room 4, the busbar room 5 is located at the rear of the drawer-type functional unit room 1 and the cable room 4 and the drawer-type functional unit room 1, busbar Room 5 and cable room 4 are separated by a metal plate. Each drawer is composed of an independent functional unit or a mixture of more than 1/2 functional units. It can be combined by a maximum of 22 1/2 functional units. The branch busbars in the busbar room are connected. Cable chamber 4 has outgoing lines above and below, and the main busbars in busbar chamber 5 are arranged horizontally in counters, which not only enhances the ability of the busbars to resist electric power, but also enables the main circuit of the device to have the ability to carry short-circuit current intensity. The drawer-type functional unit room 1 is composed of a plurality of drawers 6, and the primary incoming line on the drawer is connected to the branch bus in the bus room; the drawer 6 is composed of side panels, door panels, and rear cover panels made of insulating materials, and the drawer is realized by hinges. Open and pull, there is a control panel inside, and 32 pairs of auxiliary contacts on the rear cover. There is a mechanical interlock 7 on the door panel of the drawer 6. The operation of the main switch and the drawer 6 share an operating handle 7. The handle is equipped with a mechanical interlock and Electrically interlocked and there are marks on the handle for closing, opening, testing, isolating, and withdrawing positions, which play a role in indication and safety. The cable room 4 can arrange four-wire or five-wire bus system according to the needs, and the neutral ground wire of the four-wire system or the ground + neutral wire in the five-wire system are installed at the front and bottom of the cabinet.

It should be understood that: although the above-mentioned embodiments have described the utility model in more detail, these text descriptions are only simple text descriptions of the design ideas of the utility model, rather than restrictions on the design ideas of the utility model. The combination, addition or modification of the design idea of the utility model all fall within the protection scope of the utility model.

Claims (6)

1. A low-voltage withdrawable switchgear, which includes a cabinet body, is characterized in that: the front part of the left half of the cabinet is a drawer-type functional unit room, the front part of the right half is a cable room, and the busbar room is located between the drawer-type functional unit room and The rear part of the cable room and the drawer-type functional unit room, the busbar room and the cable room are separated by metal plates. 2. The low-voltage withdrawable switchgear according to claim 1, characterized in that: the drawer-type functional unit room is composed of a plurality of drawers, and the primary incoming line on the drawer is connected to the branch bus in the bus room. 3. The low-voltage withdrawable switchgear according to claim 2, characterized in that: the drawer is composed of side panels, door panels, and rear cover panels made of insulating materials, and the drawer is opened and pulled by hinges, and there are control panels, There are 32 pairs of auxiliary contacts on the rear cover. 4. The low-voltage withdrawable switchgear according to claim 3, characterized in that: there is a mechanical interlock on the door panel. 5. The low-voltage withdrawable switchgear according to claim 1, characterized in that: the main busbars in the busbar room are arranged horizontally on the counter. 6. The low-voltage withdrawable switchgear according to claim 1, characterized in that: the upper and lower sides of the cable room have outlet channels.

Images