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MNS low-voltage withdrawable switchgear//multi-circuitsoft-starting//high-voltage soft-starting cabinet

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This series of low-voltage withdrawable switchgear is a combination cabinet type assembled by the factory using standard modules (FBA), and its technology has reached the international advanced level.

This series of low-voltage withdrawable switchgear is suitable for power plants, substations, petrochemicals, metallurgical steel rolling, transportation energy, light industry and textile enterprises, residential areas, high-rise buildings and other places. It is used for the conversion, distribution and control of electrical energy in power systems with AC frequency of 50-60Hz and rated working voltage of AC 660V and below. This device complies with the national professional standards GB72511 "Low voltage switchgear" and JB/T9961 "Low voltage withdrawable switchgear", as well as international professional standards such as IEC439-1 and VDE0660 Part 5.

Product Description

The ambient air temperature shall be no higher than +40°C and no lower than -5°C, with the average temperature over a 24-hour period not exceeding +35°C.
Atmospheric conditions: The air shall be clean. The relative humidity shall not exceed 50% at the maximum temperature of +40°C; higher relative humidity is allowed at lower temperatures (e.g., 90% at +20°C). However, consideration shall be given to potential condensation that may occur due to temperature changes.
The altitude shall not exceed 2000m.
The device is suitable for transportation and storage at temperatures ranging from -25°C to +55°C, and can temporarily reach +70°C for a short period (no more than 24 hours). Under these extreme temperatures, the device shall not suffer any irreversible damage and can operate normally under normal conditions.
If the above operating conditions cannot be met, the matter shall be resolved through consultation between the user and the manufacturer.
When the device is used on offshore oil drilling platforms and nuclear power stations, a separate technical agreement shall be signed.

Main Technical Parameters

Item		Parameter
Rated insulation voltage		660V (1000V)
Rated operating voltage		380V, 660V
Maximum operating current of main busbar		5000A
Rated withstand current of main busbar		100kA/1s
Rated peak withstand current of main busbar		220kA/0.1s
Maximum operating current of distribution busbar (vertical busbar)		1000A
Peak current of distribution busbar (vertical busbar)	Standard type	105kA (max.)/0.1s
	Enhanced type	176kA (max.)/0.1s

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