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MNS low voltage withdrawable switchgear
Overview
MNS low voltage switchgear is suitable for system with AC 50(60)HZ and rated working voltage up to 660V,and applicable for power generation, distribution, change-over and consumption equipment control. It conforms to relevant standards such as IEC60439-1,GB7251.1 and JB/T9661.
Main characteristics
1.The frame is of combined structure with basic framework made up of assembled C-profiled bars;
2.Each cubicle is partitioned into horizontal busbar compartment, drawer compartment and cable compartment. Steel plates or flame-retardant plastic function boards of high strength are added as partition between drawers as to prevent switching element from accidents caused by flashover due to fault or short-circuit of busbar with other circuits;
3.Compact design enables to accommodate more function units within limited space;
4.Structure members have great versatility and flexible assembly. Taking E=25mm
As module, the structure and withdrawable unit can have random combination as to satisfy the demand of system design;
5.The busbar is protected by plastic function boards of high-strength flame-retardant and high insulation strength, which has performance against fault arc as to ensure safe and reliable running and maintenance;
6.Mechanical interlock gear of drawers in different sizes conforms to stipulations laid by standards and has three obvious positions as making, testing and breaking, with safety and dependability.
Drawer types
Drawer types take E=25mm as module, and divided into four standard size as 8E/4,8E/2,8E,16E and 24E.The rated current of unit loop is 400A or below. Among them,8E/4 and 8E/2 modules are made of fire-retardant plastics and aluminum alloy profiles,8E/4 module can withstand maximum current of 32A and 8E/2 of 63A.In one cabinet, we can choose the same type of module unit or four different types mounted together. The total height of function unit compartment is 72E(1800mm).
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