MNS
MNS low-voltage draw-out switchgear for three-phase five-wire power supply systems up to 6300A, suitable for power plants, substations, industrial facilities, hotels, airports, docks, and communication centers.
Quick Specifications
Rated Voltage
1kV and below
Rated Current
Up to 6300A
System Type
Three-phase five-wire
Standards
IEC 439 / GB 7251
Product Overview
The MNS low-voltage draw-out switchgear is developed by our company after referring to and comprehensively improving the MNS low-voltage switchgear of ABB Company in Switzerland. It is a relatively complete low-voltage draw-out switchgear.
This product is composed of standardized and serialized modules, and the drawers are equipped with reliable mechanical interlock devices, making it safer and more reliable for users during use.
This switchgear is suitable for three-phase five-wire power supply systems with an alternating current of 50(60) Hz, a rated operating voltage of 1kV and below, and a rated current of 6300A and below. It can be used in power plants, substations, industrial and mining enterprises, buildings and hotels, airports, docks, and communication centers such as radio and television.
It is used for the control of power generation, power transmission and distribution, power conversion and power consumption equipment, and the main busbar is subject to reactive power compensation through the capacitor compensation cabinet.
There are five sizes, all designed with a modular structure at a height of 8E (200mm), and the effective installation height of the components is 1800mm, making the overall layout of the cabinet more reasonable and beautiful.
8E/4: Height 200 x Width 150 x Depth 400. Four drawer units are combined in parallel within the height space.
8E/2: Height 200 x Width 300 x Depth 400. Two drawer units are combined in parallel within the height space.
8E: Height 200 x Width 600 x Depth 400. One drawer unit is assembled within the height space.
16E: Height 400 x Width 600 x Depth 400. One drawer unit is assembled within the height space.
24E: Height 600 x Width 600 x Depth 400. One drawer unit is assembled within the 24E (600mm) height space.
Enforce Standards
- IEC 439: Low-voltage switchgear and control equipment
- GB 7251: Low-voltage switchgear
Normal Service Condition
- The ambient air temperature shall not be higher than +40 degrees Celsius and not lower than -5 degrees Celsius, and the average temperature within 24 hours shall not be higher than +35 degrees Celsius. When these limits are exceeded, the capacity shall be derated for operation according to the actual situation.
- It is for indoor use, and the altitude of the installation location shall not exceed 2000 meters.
- The relative humidity of the ambient air shall not exceed 50% when the maximum temperature is +40 degrees Celsius. At lower temperatures, a higher relative humidity is allowed. For example, it is 90% at +20 degrees Celsius. The influence of occasional condensation caused by temperature changes should be taken into account.
- When the device is installed, the inclination from the vertical plane shall not exceed 5 degrees, and the entire group of cabinet rows shall be relatively flat. The device shall be installed in a place without severe vibration and impact, and where the electrical components will not be subject to undue corrosion.
Performance Parameter
| Name |
GB7251.1-2005 Low Voltage Switchgear and Control Equipment (TTA)
IEC60439 Low-voltage Switchgear and Control Equipment | |
|---|---|---|
| Overvoltage class | IV/III | |
| Pollution level | 3 | |
| Rated operating voltage (Ue) (V) | <=1000 | |
| Rated insulation voltage (Ui) (V) | <=1000 | |
| Rated frequency (Hz) | 50(60) | |
| Horizontal bus | Rated current | <=6300A |
| Horizontal bus | Rated short-time withstand current (Icw) (kA) | 50, 65, 80 (1s valid) |
| Horizontal bus | Rated peak withstand current (Ipk) (kA) | 105, 140, 176 (0.1s max) |
| Vertical busbar | Rated maximum operating current | <=1000A |
| Vertical busbar | Rated short-time withstand current | 50kA |
| Vertical busbar | Rated peak withstand current | 105kA |
| Case protection class | IP30/IP40 (Special instructions) | |
| Main Bus Switch | Item | Condition | Tolerance (mm) |
|---|---|---|---|
| 1 | Perpendicularity | 3.3 | |
| 2 | Levelness | Top of two cabinets next to each other | 2 |
| Levelness | Top of a row cabinet | 5 | |
| 3 | Unevenness | Two cabinets next to each other | 1 |
| Unevenness | Lining the sides of the cabinets | 2 | |
| 4 | Cabinet joint | 2 |
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