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1E Class MNS Series LV Withdrawable Power Electric Switchgear / Air Insulated Switchgear
IE class MNS LV complete set switchgear (hereafter IE class MNS for short) is improved and developed by our company on basis of original MNS LV complete set switchgear in accordance with environmental condition of nuclear power plant and meet the requirement of IE class LV switchgear of nuclear power plant. It is applied on IE class low voltage power distribution of nuclear power plant, IE class lower voltage load and other important facilities of power supply and control. IE class MNS possess functions of 380/220V electric energy distribution, system supervising protection and power facility or equipment control and protection functions under normal and abnormal condition of nuclear power plant, and can maintain above integrity safety functions under design basis event within service life of installation.
IE class MNS is a whole assembling type structure. Its basic framework is assembled by C type material, whose installation hole module number is E=25mm.All stand column of framework is used with C type material mixed structure, with joint between top and bottom of framework connected with strengthen plate. Diagonal brace will be increased at bus room outside at the rear of switchgear to enhance seismic resistance ability of IE class MNS. Framework is of precise size, stable structure and flexible assembly. Whole framework of IE class MNS and parts in switchgear are processed with aluminum zinc coated steel sheet or fine quality cold roll steel sheet(Parts proceeded by cold roll steel sheet should be passivated).All door plate and closing plate are proceed to static spaying by dacromat technology with uniform coating and strong adhesion.
1. Compact structure of equipment: with smaller space to accommodate more functional units, unit set of switchgear can accommodate as many as 36 pieces of 8E/4 drawer units.
2. Strong Structural popularity and flexible assembly: C type material meets different kinds of structural forms, requirement of protection degree and service environment.
3. Adopting standard module design: It can consist of protection, operation, control, measurement, instruction, etc. standard unit module structure by respectively. Users can freely assemble it if necessary.
4. Safe and reliable: Adopted isolation between areas and isolating with each other between functional units can effectively enhance security protection performance
5. Convenient assembly: Do not need any special and complicated tools.
6. Pass various tests with higher reliability and continuous power supply.
7. Excellent anti-seismic property.
1. Rated insulation voltage:660V
2. Rated working voltage:380V
3. Rated current:2500A
4. Rated short time (1s) withstand current: 65KA
5. Rated peak withstand current: 143KA
6. Rated frequency:50Hz
7. Protection degree:IP31,IP40