GCK(L) low-voltage withdrawable switchgear-High Voltage_Low Voltage_Substation

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Address: 4-2, Building E, Huazhong Enterprise City, 16 North Avenue, Hankou, Wuhan City

Tel: 027-61503288

189 9560 1588

GCK(L) low-voltage withdrawable switchgear

Classification:

Switch cabinet

Electrical products with voltage levels ranging from 3.6kV to 550kV, used for power generation, transmission, distribution, energy conversion, and consumption in the power system to provide on/off, control, or protection functions

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hbctdq@hbctdq.com

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Product Details

Overview

GCK(L) low-voltage withdrawable switch cabinet is suitable for low-voltage distribution system with AC 50Hz and rated working voltage 380V. It includes the functions of power center (PC) and motor control center (MCC). All technical parameters meet the national standards. It has the characteristics of advanced structure, beautiful appearance, high electrical performance, high protection level, safety and reliability, and convenient maintenance. It is an ideal power distribution device for low-voltage power supply systems in metallurgy, petroleum, chemical, electric power, machinery, textile and other industries.

This product complies with IEC-439 and GB7251.1-97 standards.

Features

◆ GCK(L)1 and GCJI are assembled composite structures, and the basic skeleton is made of special profiles.

◆ The cabinet frame, part size and opening size shall be changed according to the basic modulus E = 25mm.

◆ In the MCC scheme, the cabinet is divided into five areas (rooms): horizontal bus area, vertical bus area, functional unit area, cable room and neutral grounding bus area. Each district is isolated from each other to ensure the normal operation of the line and effectively prevent the expansion of the fault.

◆ Since all the structures of the frame are fastened with screws, welding deformation and stress are avoided, and the accuracy is improved.

◆ parts versatility, good applicability, high degree of standardization.

◆ The extraction and insertion of the functional unit (drawer) are operated by levers, and the operation of rolling bearings is light and reliable.

Main technical parameters

◆ Protection grade IP40, IP30

◆ Rated working voltage 380(V)

◆ Frequency 50Hz

◆ Rated insulation voltage 660V

◆Working conditions

Environment: Indoor

Altitude: ≤ 2000m

Ambient temperature:-5 ℃- 40 ℃

Under storage and transportation conditions, the minimum temperature is -30 ℃

Relative humidity ≤ 90%

◆ Control motor capacity (kW):0.4-155

◆ Rated current (A)

Horizontal bus: 1600, 2000, 3150

Vertical bus: 630, 800

Main circuit contact connector: 200, 400

Feeder circuit PC cabinet: 1600

Maximum current MCC cabinet: 630

Power receiving circuit: 1000, 1600, 2000, 2500, 3150

◆ Rated short-time withstand current (KA)

Valid values: 50, 80

Peak: 105, 176

◆ Power frequency withstand voltage (V/1min):2500

Normal use environmental conditions

The altitude is not more than 2000 meters.

◆ The ambient air temperature is not higher than 40 ℃, not lower than -5 ℃, and the average temperature within 24 hours is not higher than 35 ℃.

◆ Atmospheric conditions: the air is clean, the relative humidity does not exceed 50% at a temperature of +40 ℃, and a higher relative humidity is allowed at a lower temperature, for example, 90% at +20 ℃.

◆ There is no fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.

◆ Inclined not more than 5 ° from the vertical plane.

The control center is suitable for transportation and storage at the following temperatures:-25 ℃- 55C, not exceeding 70 ℃ in a short time (not exceeding 24h).

internal structure

The switch cabinet has the functions of overhead incoming and outgoing lines, cable incoming and outgoing lines, bus connection, etc. Mainly suitable for power plants, substations, petrochemical, metallurgical steel rolling, light industry and textile, factories and mining enterprises and residential areas, high-rise buildings and other different places. It mainly includes high-voltage isolating switch and grounding switch, high-voltage load switch, high-voltage automatic coincidence and segmenter, high-voltage operating mechanism, high-voltage explosion-proof distribution device and high-voltage switch cabinet.

Correct Selection of Breaker Breaking Capacity
On the primary system diagram, the selected circuit breaker, indicating the circuit breaker model, rated working voltage and rated working current, must also be selected for the breaking capacity of the circuit breaker. With user drawings, the breaking capacity of the circuit breaker is not selected, which makes it difficult for the manufacturer to carry out engineering design. The breaking capacity selection should be based on the system short-circuit parameters. If the manufacturer does not understand the system short-circuit parameters, it is difficult to make the correct choice. There are also some user drawings, regardless of the system short-circuit parameters, blindly select high-break parameters, resulting in unnecessary waste of funds. The correct choice of breaking capacity is very important, not only to ensure safe operation, but also to consider reducing product costs.

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GCK(L) low-voltage withdrawable switchgear

+86 27-61503288

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hbctdq@hbctdq.com

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4-2, Building E, Huazhong Enterprise City, No. 16 North Avenue, Hankou, Wuhan City

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