400A Mcc Panel Power Distribution Switchboard AC Withdrawable Electrical Switchgear Manufacturer Indoor Low Voltage Switchgear Switch Cabinet MNS SC-09

MNS series of Low-voltage Withdrawable Switchgear is a combined type cabinet (FBA) assembled from standard modules by the factory, is applicable for power systems of AC50~60Hz, rated operating voltage up to and including 660V in power plants, transformer substations, petrochemical engineering, metallurgy, steel rolling, transportation energy, light industry, textile and other industrial enterprises and residential areas, high-rise buildings and so on, used for electric energy conversion, distribution and control. It complies with the standards GB7251 Low-voltage switchgear assembly, JB/T9961 Low-voltage withdrawable switchgear assembly, and the international standards IEC439-1 and VDE0660-part IV.

Service conditions

       Ambient air temperature should be within - 5°C~ +40C, average temperature within 24h should not exceed +35C. Atmospheric conditions: air should be clean. Relative humidity should not exceed 50% at +40C,higher relative humidity is allowed at lower temperature condition, for instance, 90% at +20C,please take measures for the dew produced on the product caused by temperature changeoccasionally.

Altitude: not exceed 2000m. Ambient temperature for storage and transportation: - 25C~+55C, short time (usually not beyond 24h) highest temperature not exceed 70C. The product should not be subject to any irreversible damage under the extreme temperature and should be able to work normally under the normal conditions. Any special requirements beyond the abovementioned conditions can be settled through friendlynegotiation. 

Basic structure

The basic structure of the switchgear is assembly by C-shaped profile. C-shaped profile is bent by steel plate with modular mounting hole of E=25mm. All shelves and inner partitions are treated with galvanized purification; door and side panels are treated with high- pressure electrostatic spray.

Power distribution center cabinet (PC): Emax, MT, 3WN, AH and ME series circuit breakers can be used.

Motor control center cabinet (MCC): assembled by drawers of different sizes, the main circuit breakers use moulded-case circuit breaker of high breaking capacity or rotary switch with fuses.

Power factor automatic compensation cabinet (it has manual, automatic and remote power factor compensation device). The withdrawable MCC cabinet is divided into three compartments, namely the horizontal bus chamber behind the cabinet, the functional unit chamber on the front left of the cabinet and the cable chamber on the front right of the cabinet. The horizontal bus chamber and the functional unit chamber are separated by functional plates made of flame -retardant foamed plastic. The cable chamber, the horizontal bus chamber and the functional unit chamber are separated by steel plates.

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