◎summary
mns type low voltage switchgear (hereinafter referred to as the device) is designed and developed on the basis of the imported switch cabinet. the system is suitable for the exchange of 50 (60) hz rated working voltage 660v and the following systems for power generation, transmission, distribution, electric energy conversion and control of electric energy consumption equipment. in addition to general land use, after special treatment can be used for hi offshore oil drilling platform and nuclear power station. in accordance with the national standard gb7251.1 "low voltage switchgear and control equipment," jb/t9661 "low voltage withdrawable switchgear" and the international standard iec439. of the device can be composed of different schemes of frame structure and the drawer unit, the use of high strength flame retardant engineering plastics components, effectively strengthening the protection of the safety performance, the drawer unit has a small volume, strong function, high interchangeability, convenient maintenance, reliable contact replacement etc..
◎structure description
the basic cabinet frame of the device is a c profile combined structure, and the whole structure of the cabinet frame is processed by the zinc plating process or the aluminum zinc plate production. through self tapping locking screws 8.8 six angle screws are connected with each other into the basic framework, then the program needs changes, together with the corresponding door, sealing plate, plate, mounting bracket, and bus function unit, and other parts to assemble a complete device, device parts size, compartment size, implement the modulus (modulus e=25mm). the cabinet can also be used after the outlet way but the main bus must be positioned on the top of the cabinet. the vertical channel adopts half block function board, which is easy to maintain and has a width of 600. the level of protection ip3x-4x.
◎drawer type
drawer type: four kinds of standard size, are based on 8e (200mm) height, they were 8e/4, 8e/2,8e, 16e and 24e.
8e/4: in 8e (200mm) high space assembly 4 drawer unit;
8e/2: in 8e (200mm) high space assembly 2 drawer unit;
8e: in 8e (200mm) high space assembly 1 drawer units;
16e: in 16e (400mm) high space assembly 1 drawer unit;
24e: in 24e (600mm) high space assembly 1 drawer unit.
unit circuit rated current 400a and below. among them, the structure of 8e/4 and 8e/2 two kinds of drawer is made of flame retardant plastics and aluminum alloy profiles. the four drawer unit can be assembled in a single cabinet, but also can be used for mixing assembly. the total height of the functional unit compartment is 72e (1800mm).
◎outline dimension
high 2200
width 600 800 1000
depth 600 800 1000 600 800 1000 600 800 1000
