MNS low-voltage withdrawable switchgear
Short Description:
■Product OverviewThe MNS low-voltage withdrawable switchgear (hereinafter referred to as switchgear) is developed by our company after comprehensively improving and referencing the MNS series low-voltage switchgear of ABB Switzerland. It is currently one of the more perfect low-voltage withdrawable …
Product details
■Product Overview
The MNS low-voltage withdrawable switchgear (hereinafter referred to as switchgear) is developed by our company after comprehensively improving and referencing the MNS series low-voltage switchgear of ABB Switzerland. It is currently one of the more perfect low-voltage withdrawable switchgear devices in China. The product consists of standardized, serialized modules, and the drawer is equipped with a reliable mechanical interlocking device, making it safer and more reliable for users during operation.
This switchgear is suitable for AC 50(60)Hz, rated working voltage 400V, 660V, and three-phase five-wire power supply systems with a rated current of 5000A and below. It can be used in power plants, substations, industrial and mining enterprises, high-rise buildings, airports, docks, and broadcasting and television communication centers for the control of power generation, power distribution, electric energy conversion, and electric energy consumption equipment, and provides reactive power compensation for the main busbar through capacitors. Conforms to standards: GB7251.1 "Low-voltage switchgear and controlgear assemblies" IEC60439 "Low-voltage switchgear and controlgear assemblies".
■ Model Meaning
■ Operating Conditions
◇ Ambient air temperature not higher than +40°C, not lower than -5°C, and the average temperature within 24h does not exceed +35°C;
◇ Relative humidity of ambient air does not exceed 50% at the highest temperature of +40°C, and higher relative humidity is allowed at lower temperatures, such as 90% at +20°C, but considering that temperature changes may occasionally produce moderate condensation;
◇ Indoor use, the altitude of the installation site shall not exceed 2000m;
◇ Should be installed in places without severe vibration and impact, and where electrical components are not subject to corrosion.
◇ Relative humidity of ambient air does not exceed 50% at the highest temperature of +40°C, and higher relative humidity is allowed at lower temperatures, such as 90% at +20°C, but considering that temperature changes may occasionally produce moderate condensation;
◇ Indoor use, the altitude of the installation site shall not exceed 2000m;
◇ Should be installed in places without severe vibration and impact, and where electrical components are not subject to corrosion.
■ Main Technical Parameters
| No. | Name | GB7251.1-2005 Low-voltage switchgear and controlgear assemblies (TTA) IEC60439 Low-voltage switchgear and controlgear assemblies |
|---|---|---|
| 1 | Overvoltage Category | IV III |
| 2 | Pollution Degree | 3 |
| 3 | Rated Working Voltage (Ue)(V) | 400/660 |
| 4 | Rated Insulation Voltage (Ui)(V) | 660/1000 |
| 5 | Rated Frequency (Hz) | 50(60) |
| 6 | Horizontal Busbar Rated Current | ≤ 5000A |
| 7 | Horizontal Busbar Rated short-time withstand current (Icw)(kA) | 50, 65, 80(1s RMS) |
| 8 | Horizontal Busbar Rated peak withstand current (Ipk)(kA) | 105, 140, 176(0.1s Max) |
| 9 | Vertical Busbar Rated Max. Operating Current | ≤ 1000A |
| 10 | Vertical Busbar Rated short-time withstand current | 50kA |
| 11 | Vertical Busbar Rated peak withstand current | 105kA |
| 12 | Enclosure Protection Class | IP30 IP40 (Special explanation) |
