China Mns-LV Withdrawable Switchgear

General
MNS LV withdrawable switchgear (hereinafter referred to as device) is

manufactured by standard module through consulting MNS series low

voltage switch cabinet of Switzerland ABB Company, and synthetically

improved. The device is applicable to the system with AC 50Hz, rated

working voltage 660V and below, used as control device for various power

generation, transmission, distribution, power transfer and power consump

tion device. It is widely used in low voltage distribution system of various

mining enterprise, tall building and hotel, municipal construction etc. Be

sides the general land use, after special disposal, it also can be used for

marine petrol drill taken platform and nuclear power station.

The device accords with international standard IEC439-1 and national

standard GB7251.1.
Characteristics

1. Compact design: Contain more function units with less space.

2. Strong versatility for structure, flexible assembly. C type bar section of 25mm

modulus can meet the demands of various structure and type, protection grade and

operating environment.

3. Adopt standard module design, can be combined into protection, operation,

transfer, control, regulation, measurement, indication etc such standard units. User

can choose assembly according to requirement at will. Cabinet structure and drawer

unit can be formed with more than 200 components.

4. Fine security: Adopt high strength antiflaming type engineering plastic pack in

large quantity to effectively enhance the protective safety performance.

5. High technical performance: Main parameters reach the advanced level at home.
Main technical parameters

Rated working current of vertical bus bar:

Draw-out type MCC with single side or double sides operation: 800A. MCC with 1000mm depth and single operation: 800~2000A.
Conditions for normal operating environment

1. Ambient air temperature: -5~+40 and the average temperature should not

exceed +35 in 24h.

2. Air condition: With clean air. Relative humidity should not exceed 50% at +40.

Higher relative humidity is allowed at lower temperature. Ex. 90% at +20. But in view

of the temperature change, it is possible that moderate dews will produce casually.

3. Altitude above sea level should not exceed 2000M.

4. The device is suitable to the transportation and store with following temperature

:-25 ~+55, in short time (within 24h) it reaches +70. Under the limiting

temperature, device should not suffer damage that cant recover, and it can works

normally under normal conditions.

5. If the above operating conditions not meet users demand. Consult with

manufactory.

6. Technical agreement should be signed additionally if the device is used for marine

petrol drill taken platform and nuclear power station.
Structure characteristics

The basic cabinet of device is combined assembly structure. Basic structural pieces of cabinet is zinc

plated, connected and firmed into basic bracket through self tapping locking screw or 8.8 grade

square corner screw. According to the change demand of project, additionally add corresponding

gate, closing board, baffle plate, installation support and the components of bus bar, function units,

to assemble a complete set of device. Perform modulus to interior component and compartment size

(Modulus unit e=25mm).

Interior structure