- Low voltage switch cabinet
- Power distribution cabinet
- Non standard distribution box
- High voltage ring network cabinet
- High voltage switch cabinet
- High voltage sulfur hexafluoride switchgear
- High voltage arc suppression cabinet
- Constant pressure water supply equipment
- American box type substation
- European box type substation
- Lighting distribution box
- DC screen
- Integrated distribution box and console
- Product classification：Low voltage switch cabinet
- Product specification：
- product price：￥0.00
- Order Hotline：13635605151
MNS low voltage draw out switchgear
Description
MNS low-voltage draw out switchgear (hereinafter referred to as switchgear) is developed with reference to MNS series low-voltage switchgear of ABB in Switzerland and comprehensive improvement. It is a more advanced low-voltage draw out switchgear in China. The product is composed of standardized and series modules, and the drawer has reliable mechanical interlocking device, which makes the user safer and more reliable in use.
The switch cabinet is applicable to the three-phase five wire power supply system with AC 50 (60) Hz, rated working voltage and insulation voltage of 380 (400) V and 660V, rated current of 5000A and below. It can be used in power plants, substations, industrial and mining enterprises, buildings, hotels, airports, docks, broadcast television and other communication centers, as well as the control of power generation, transmission and distribution, power conversion and power consumption The reactive power of the main bus is compensated through the capacitor compensation cabinet.
Service conditions
1. The ambient air temperature is not higher than + 40 ℃, not lower than - 5 ℃, and the average temperature within 24 hours is not higher than + 35 ℃;
2. The relative humidity of the surrounding air shall not exceed 50% at the maximum temperature of + 40 ℃, and there is a large relative humidity at a lower temperature, such as 90% at + 20 ℃, but considering that moderate condensation may occur occasionally due to the change of temperature;
3. For indoor use, the altitude of the place of use shall not exceed 2000m;
4. It shall be installed in a place without violent vibration and impact and without corrosion of electrical components.
Technical data
| Standards and technical specifications | GB7251. 1 low voltage switchgear and control equipment (TTA) JB / t9661 low voltage withdrawable switchgear |
| Overvoltage category | Ⅳ Ⅲ |
| Pollution grade | 3 |
| Rated working voltage(Ue)(V) | 380(660) |
| Rated insulation voltage(Ui)(V) | 660(1000) |
| Rated frequency(Hz) | 50(60) |
| Horizontal bus | |
| Rated current | 5000A 4000A 3150A 2500A 2000A 630A |
| Rated short-time withstand current(Icw)(kA) | 50 , 65 , 80, (1s valid value) |
| Rated peak withstand current(Ipk)(kA) | 105, 140, 176, (0.1s Max) |
| Vertical bus | |
| Rated maximum working current | ≤1000A |
| Rated short-time withstand current | 50kA |
| Rated peak withstand current | 105kA |
| Enclosure protection level | IP30 IP40(Special instructions) |
Structure characteristics
Due to the introduction of the advanced technology of ABB in Switzerland and the technical improvement on its original basis, the switchgear is more in line with China's national conditions. The cabinet body adopts C-section with 25mm module to form various cabinet racks and drawer units through connectors. A large number of high-strength flame-retardant engineering plastic components are used in MCC cabinet, so that its safety performance is more reliable. At the same time, foreign functional boards are improved and combined with 200mm module, which is conducive to the design requirements of mixed cabinet body of PC cabinet and MCC cabinet, The extraction unit and the cabinet body have reliable interlocking devices to prevent the switch from being opened with load when the switch is powered on and improve the safety. In addition, the cabinet body is generally assembled after coating and passivation treatment with cold rolled copper plate, or aluminum zinc coated steel plate can be used according to the different needs of users.