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Low Voltage Withdrawable Switchgear

Name: Low Voltage Withdrawable Switchgear
Brand: Zhejiang Tenrony Electricity Co., Ltd.
Availability: InStock

Low-voltage withdrawable switchgear (hereinafter referred to as the switchgear)is developed by the withdrawable switchgear company with reference to the MNS series low-voltage switchgear of ABB in Switzerland, and with comprehensive improvements. low voltage switchgear is currently one of the most advanced low-voltage withdrawable switchgear equipment in China. Withdrawable switchgear is composed of standardized and serialized modules, and the drawers are equipped with reliable mechanical interlocking devices, making it safer and more reliable for users to use.

This switchgear is suitable for the three-phase five-wire power supply system with an AC frequency of 50(60)Hz, a rated operational voltage of 400V,660V, and a rated current of 5000A and below. Withdrawable switchgear can be used in power plants, substations, industrial and mining enterprises, hotels, airports, and docks, as well as communication centers such as broadcasting and television, for the control of power generation, transmission, and distribution, energy conversion, and energy consumption equipment. Withdrawable switchgear can also perform reactive power compensation for the withdrawable switchgear main bus bar through a capacitor compensation cabinet.

Compliant with national standards: GB7251.1"Complete Set of Low-Voltage Switchgear Equipment", IEC60439"Complete Set of Low-Voltage Switchgear Equipment and Control Equipment"

Products

Features

Advanced and reliable technology

As a product developed based on the Swiss ABB Company's MNS series and comprehensively improved, withdrawable switchgear is currently one of the more advanced low-voltage withdrawable switchgears in China. withdrawable switchgear features a mature design concept and optimized performance after improvement, with a high starting point and strong adaptability.

Structural Standardization and Prominent Safety

Composed of standardized and serialized modules, withdrawable switchgear is convenient for production, assembly, and later maintenance and replacement, enhancing the universality and flexibility of the equipment.

Wide Application Range

Withdrawable switchgear applies to three-phase five-wire power systems with an alternating current of 50 (60) Hz, a rated voltage of 400V/660V, and a rated current of 5000A or less. Withdrawable switchgear is widely used in power plants, substations, industrial and mining enterprises, buildings and hotels, airports, docks, and broadcasting and television stations. Withdrawable switchgear can meet various functional requirements such as power generation, power transmission and distribution, power conversion, equipment control, and reactive power compensation.

Compliance with authoritative standards

Strictly adhering to the national standard GB7251.1 "Low-voltage Switchgear Assemblies" and the international standard IEC60439 "Low-voltage Switchgear and Controlgear Assemblies", there are clear normative guarantees in terms of quality, performance, and safety, and it can be safely applied in various power system scenarios.

Parameters

Main Technical Parameters
Electrical Performance
Rated Insulation Voltage	600V
Rated Operating Voltage	380V,660V
Maximum Operating Current of Main Busbar	5000A
Rated Withstand Current of Main Busbar	100kA
Rated Peak Withstand Current of Main Busbar	220kA
Maximum Operating Current of Distribution Busbar (Vertical Busbar)	1000A
Peak Current of Distribution Busbar(Vertical Busbar)	80kA
Standard Type	105kA(max)
Enhanced Type	176kA(max)

Parameters of Low Voltage Withdrawable Switchgear

Benefits

Normal operating conditions

The ambient air temperature is not higher than+40°℃, not lowerthan-5℃, and the average temperature within 24h is not higher than+35℃.
Atmospheric conditions: The air is clean, and the relative humidity does not exceed 50%at the highest temperature of+-40℃.At lower temperatures, a higher relative humidity is permissible, for example,90%at+20℃, but the possibility of occasional condensation should be considered due to temperature fluctuations.
The altitude does not exceed 2000m.
Withdrawable switchgear is suitable for transportation and storage processes within the temperature range of-25℃to+55°℃. Withdrawable switchgear can reach up to+70°℃ for a short period(not exceeding 24h). Withdrawable switchgear should not incur any irreversible damage at these extreme temperatures, and withdrawable switchgear should be able to operate normally under the above conditions.
If the above operating conditions cannot be met, the user and the withdrawable switchgear manufacturer should negotiate to resolve the issue. When this device is used on offshore oil drilling and production platforms and nuclear power plants, a separate technical agreement should be signed.

Use

Cabinet Structure

The basic structure of the switchgear cabinet is assembled from C-shaped profiles. The C-shaped profiles are made of steel plates bent with a modulus of E=25mm for mounting holes. All the cabinet frames and inner partitions are galvanized for purification. The surrounding door panels and side panels are coated with high-voltage electrostatic spray. The basic structure of the cabinet is shown in Figure 1, and the basic dimensions of the cabinet are shown in Tables1and 2.

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