Product Overview

The GCS type low - voltage draw - out complete switchgear (hereinafter referred to as "switchgear") is designed and developed by our company to meet the requirements of numerous design units and power users. It conforms to the national conditions, has high technical performance indicators, can adapt to the development needs of the power market, and can compete with existing imported products.

This product has been widely selected by power users. The switchgear is applicable to the power distribution systems of industries such as power plants, petroleum, chemical industry, metallurgy, textiles, and high - rise buildings. In places with a high degree of automation in large power plants, petrochemical systems, etc., where an interface with a computer is required, it is used as a low - voltage complete power distribution device for power distribution, centralized motor control, and reactive power compensation in the power generation and power supply systems with a three - phase AC frequency of 50 (60) Hz, a rated working voltage of 380V (400V), (660V), and a rated current of 4000A and below.

This product complies with GB7251 "Low - voltage complete switchgear and control equipment", JB/T9661 "Low - voltage draw - out switchgear", and also meets the standard of IEC60439 - 1 "Low - voltage complete switchgear and control equipment".

Structural Features

1. The main framework of the GCS switchgear adopts C - shaped steel, and the framework is in a pre - assembled structure. There is an installation modulus E = 20mm on the main framework. The functional compartments of the switchgear are strictly separated, and its compartments are mainly divided into functional unit compartments, busbar compartments, current compartments, and the functions of each unit are relatively independent.

2. Functional Unit

a. The modulus of the drawer layer height is 160mm. It is divided into five size series: 1/2 unit, 1 unit, 1.5 units, 2 units, and 3 units. The rated current of the unit circuit is 400A and below.

b. The change of the drawer only occurs in the height dimension, while its width and depth dimensions remain unchanged. Drawers of the same functional unit have good interchangeability.

c. Each MCC cabinet can install a maximum of 11 one - unit drawers or 22 half - unit drawers. Drawers above one unit adopt a multi - functional rear panel.

d. The drawer in - and - out wires adopt different numbers of the same - specification sheet - type connectors according to the current size.

e. The transfer between the unit drawer and the cable compartment adopts the back - plate - type structure ZJ - 2 transfer piece.

f. For drawers of 1 unit and above, the transfer to the cable compartment adopts the same - size rod - type or tube - type structure ZJ - 1 transfer piece according to the current grading.

g. The drawer panel has obvious marks for positions such as off, on, test, and extraction.

h. The drawer unit has no mechanical interlock device.

3. Feed - line cabinets and motor control cabinets

●There are dedicated cable compartments. The connection of cables between the functional unit compartment and the cable compartment is realized through transfer pieces, which not only improves the reliability of cable use but also greatly facilitates users' installation and maintenance of cables.

●The cable compartment has two width dimensions (240mm and 440mm) for selection, depending on the number and cross - section of cables and users' requirements for convenient installation and maintenance. Considering the universality and safety of dry - type transformers and the economy of oil - immersed transformers, the device can be easily combined with a dry - type transformer into a group, or it can be easily connected to the low - voltage busbar of an oil - immersed transformer.

4. Overall characteristics

●With drawers as the main body, it has both draw - out and fixed types, which can be mixed and combined for arbitrary selection.

●The switchgear is designed according to the three - phase five - wire system and three - phase four - wire system. Design departments and users can easily select the PE + N or PEN method.

●The protection level of the cabinet body is IP30 and IP40, and it can be specially made according to user needs.