Two grid power

Power Equipment Of Two Grids

MNS draw out switch cabinet

Product overview:

This series of withdrawable switch cabinet is a kind of combined cabinet that is factory assembled (FBA) with standard modules. This series of withdrawable switchgear is applicable to power plants, substations, petrochemical, metallurgical steel rolling, transportation energy, light industrial textile and other factories and mining enterprises, residential quarters, high-rise buildings and other places. It is used for power conversion, distribution and control of power distribution equipment of power systems with AC 50~60HZ and rated working voltage of AC 660V and below. The device complies with GB 7251.1 Low-voltage switchgear and controlgear assemblies-Part 1: General rule and JB/T 9961 Low-Voltage Withdrawable Switchgear and Controlgear Assemblies and IEC 439-1 international professional standards.

Product model description


Modular

New type

System

Main circuit solution No.

Auxiliary circuit solution No.


Conditions of use

● Altitude:不超过2000m; 注:订购本产品超出上述条件规定时,请与本公司协商。

● Ambient temperature: the temperature shall not be higher than +40℃, not lower than -5℃, and the average temperature within 24h shall not be higher than+35℃;
● Atmospheric conditions: the air is clean, and the relative humidity does not exceed 50% when the maximum temperature is +40℃. Higher relative humidity is allowed when the temperature is lower, such as 90% when the temperature is +20℃. However, temperature changes should be taken into account, which may cause occasional condensation;
● Altitude: no more than 2000m;
● The device is suitable for the following temperature transportation and storage processes: between -25℃ and +55℃, it can reach +70℃ in a short time (no more than 24h). Under these extreme temperatures, the device shall not be damaged irreparably, and shall be able to work normally under normal conditions;
● If the above use conditions cannot be met, the user and the manufacturer shall negotiate for solution;
Note: When ordering this product beyond the above conditions, please consult with our company.

Basic technical parameters

1. Electrical performance​

Rated insulation voltage​

660V(1000)V

Rated operating voltage​

400V、660V

Maximum working current of main bus​

5000A

Rated withstand current of main bus​

100kA/1s

Rated peak withstand current of main bus​

220kA/1s

Maximum working current of distribution bus (vertical bus)​

1000A

Peak current of distribution bus (vertical bus)​

 
 

Standard

105kA(Maximum)/0.1s
 

Enhanced

176kA(Maximum)/0.1s

2. Protection grade

Conform to LIEC 529. DIN 40050

IP30 for fixed protection greater than Φ2.5MM

IP40 for fixed protection greater than Φ1.0MM

IP54 protects against dust and splashing in any direction

(When ordering IP54 protection grade, consult with the manufacturer)


Switch cabinet type

● Power center cabinet (PC): Emax, MT, 3WN, AH, ME series circuit breakers can be used;
● Motor control center cabinet (MCC): it is assembled by large and small drawers. The main switch of each circuit adopts high breaking molded case circuit breaker or rotary load switch with fuse;
● Automatic power factor compensation cabinet (with manual, automatic and motion power factor compensation devices).

Transportation and storage of devices

● The device shall not be overturned or subjected to severe vibration; 
● The transportation angle plate shall be used for hoisting the device after unpacking, and the included angle of two steel wire ropes shall be ≤120°. Forklift, roller or crowbar are not allowed to be directly carried out on the underframe of the device;
● If the device needs to move in a small distance when it is installed in place, it can be pried on the four corners of the test frame;
● It is not allowed to dismantle electrical products and parts at will in the device;
● Rain and humidity shall be prevented, and the ambient temperature shall be in accordance with the relevant provisions of this sample.​

Completeness of products

● The switch cabinet shall be attached with packing list, product certificate, product instructions and necessary drawings, door keys of attached accessories and spare parts provided according to the supporting list.

Cabinet diagram 



A Power center (PC) cabinet



B motor control center (MCC) cabinet



Schematic diagram of combination mode



Installation diagram


Contact Information
Zhejiang Changzheng Electric Co., Ltd.
Address:No.159, Wei 16 Road, Yueqing EconomicDevelopment Zone, Yueqing City, Zhejiang Province
Service hotline:400-826-9123
website:www.changzheng.com.cn