Function characteristics 1. The cabinet frame is made of 8MF steel, assembled by combination. 2. Each functional unit is relatively independent, and the propulsion mechanism adopts a lever propulsion mechanism. 3. Ensure that the same unit can be interchanged, improving the reliability of power supply. Operating environment 1. The ambient air temperature is not higher than +40℃ and not lower than -5℃. The uniform temperature within 24h shall not be higher than +35℃2, the relative humidity should not exceed 50% when the ultra-high temperature is +40℃, and higher relative humidity is allowed when the temperature is lower. For example: +90% at 20℃3, clean air, no corrosive and explosive gas, no conductive dust and can destroy insulation. 4. The altitude does not exceed 2000M. 5. The inclination of the device does not exceed 5°C. 6. The switchgear is suitable for transportation and storage at the following temperatures, from -25°C to +55°C, within a short time (not exceeding 24 hours) not exceeding +70°C; 7. The user should consult with the manufacturer if the above conditions are not met . The scope of application is suitable for power plants; Taijin steel rolling, petrochemical, light industrial textiles, ports, buildings, hotels and other places.