MNS Series Low Voltage Power Distribution Board Switchgear

Overview 

The MNS low voltage withdrawable switchgear is a modularly designed low voltage distribution device, widely used in industrial, commercial, and infrastructure fields. Its main functions are to distribute, control, and protect electrical power, ensuring the safe and reliable operation of the power system. The MNS switchgear employs advanced manufacturing processes and high-quality electrical components, offering high flexibility and scalability to meet diverse user needs.

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Operating Conditions

• The ambient air temperature is not higher than +40 ° C, not lower than -5 ° C, and the average temperature within 24 hours is not higher than +35 ° C;

• Atmospheric conditions: The air is clean, the relative humidity is not more than 50% at the maximum temperature of +40 ° C, and a higher  relative humidity is allowed at a lower temperature, such as 90% at +20 ° C, but the temperature change should be taken into account, and  condensation may occur occasionally; The altitude does not exceed 2000m;

• The device is suitable for transport and storage processes at the following temperatures; Within the range of -25 ° C to +55 ° C, +70 ° C can be reached in a short period of time (not more than 24h), and the device shall not suffer any irreparable damage at these limit temperatures, and shall be able to work normally under normal conditions; If the above conditions of use cannot be met, it shall be resolved by negotiation  between the user and the manufacturer.

• When the device is used on offshore oil drilling platforms and nuclear power plants, a separate technical agreement shall be signed.
  

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Product Features

• Modular Design: The standardized modular design of the MNS switchgear provides high flexibility and scalability, facilitating easy installation, maintenance, and upgrades.

• High Safety: The robust cabinet structure includes comprehensive protection measures, such as a protection rating of up to IP54, effectively preventing dust and moisture ingress and ensuring the safe operation of the equipment.

• Reliable Electrical Performance: The use of high-quality electrical components such as circuit breakers, contactors, and relays ensures stable electrical performance and long service life.

• Intelligent Control: The switchgear supports intelligent monitoring and management systems, enabling real-time monitoring of electrical parameters, fault diagnosis, and early warnings to enhance system operational efficiency and safety.

• Ease of Maintenance: The drawer-type design allows each functional unit to be independently withdrawable, facilitating inspection and replacement, reducing downtime, and improving maintenance efficiency.

• Space Saving: The compact structure occupies a small footprint, making it suitable for various installation environments and optimizing space utilization.

• Eco-Friendly and Energy Efficient: The switchgear uses environmentally friendly materials and energy-saving designs, reducing energy consumption and environmental impact, in line with modern green environmental standards.

• Multiple Protection Functions: It is equipped with multiple protection functions such as short-circuit protection, overload protection, and leakage protection, ensuring the safe operation of the power system.

• Wide Applicability: The switchgear is suitable for various low voltage distribution systems, including factories, commercial buildings, data centers, and transportation facilities, offering a broad application prospect.
  

Technical Data

Rated insulation voltage		AC690V
Rated operating voltage		AC400V
Rated current of main bus		≤6300A
Rated withstand current of main bus (1s)		50kA,80kA
Rated peak withstand current of main bus		105kA,176kA
Maximum operating current of the distribution bus (vertical bus)		1000A
Distribution busbar
	Normal form	105kA(Max.)/0.1s
	Enhanced	176kA(Max.)/0.1s

Class of protection

In line with IEC529, DIN40050 standards.

IP30 for solid protection greater than Ф2.5MM.

IP40 for solid protection with diameter greater than Ф1.0MM.

The IP54 protects against dust and splashes in any direction.

(IP54 protection should be ordered in consultation with the manufacturer)

Cabinet structure

The basic structure of the switchgear cabinet is composed of C profile assembly. Section C is made of steel plate with E=25mm module mounting hole. All cabinets and inner partitions are galvanized and purified.

Around the door panels, the side panels are made of high voltage electrostatic

Switch cabinet type

Power distribution center cabinet (PC): Emax, MT, 3WN, AH, ME series circuit breakers can be used.

Motor control center cabinet (MCC): assembled by large and small drawers, the main switch of each circuit adopts high break plastic-case circuit breaker or rotary load switch with fuse.

Automatic power factor compensation cabinet (with manual, automatic and remote power factor compensation devices)

A Power Distribution center (PC) cabinet

H	W	D			Remark
H	B	T	T1	T2
2200	400	1000	800	200	Main bus switch
2200	400	1000	800	200	F1s-1250-2000 ME630-1605
2200	600	1000	800	200	F2s-2500
2200	800	1000	800	200	F3s-3200 ME2000-3200
2200	1000	1000	800	200	F4s-4000 Me3205
2200	1200	1000	800	200	ME4005

B Motor Control Center (MCC) cabinet

H	W			D			Remark
H	B	B1	B2	T	T1	T2
2200	1000	600	400	600	400	200	Main bus switch
2200	1000	600	400	1000	400	200	F1s-1250-2000 ME630-1605

Cabinet frame structure composed of C-shaped profiles (Figure 1)

 

Cabinet diagram (Figure 2)

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