Ambient air temperature should not exceed +40℃ or less than -5℃, and averaged temperature within 24h should not exceed +35℃.
Air should be clean, relevant humidity should not exceed 50% when maximum temperature is +40℃. If the temperature is relatively low, larger relative humidity is allowed.
Pollution level: 3.
Altitude of the installation site should not exceed 2000m.
Seismic intensity should not exceed 8.
When customers have special requirements, they can negotiate with our company and reach agreements.

Universal type of cabinet is adopted for GGD AC low-voltage switch cabinet, framework of which is partially welded and assembled with 8MF cold-formed steel, components of framework and special mating parts are supplied by designated manufacturing plant of section steel to ensure precision and quality of cabinet body. Components of universal cabinets are designed as per module principle with 20 installation holes of modulus and high universal coefficient.
In consideration of the heat radiation in operation of cabinet bodies, different quantities of heat radiation channels and holes are distributed at the upper and lower ends of the cabinet bodies.
The cabinet covers are demountable when needed to facilitate assembly and adjustment of main field bus. The four corners of cabinet tops are installed with rings for lifting and loading.