1.General
HVD85-40.5（ZN85-40.5）is suitable for three-phase AC power system of 50Hz and 40.5kV, used to make and break the load current, overload current and fault current in industrial and mining enterprises, power plants and transformer substations, meanwhile, it is suitable for the occasion where the frequent operation is required.

2.Model description

3. Service conditions
3.1The ambient air temperature should be -15℃~40℃, the daily average temperature should not exceed 35℃.
3.2 Daily mean relative humidity should not exceed 95%, and the daily mean vapor pressure should not exceed 2.2kPa; the monthly mean relative humidity should not be higher than 90%, and the monthly mean vapor pressure should not exceed 1.8kPa.
3.3 Altitude: Not exceed 1,000m.
3.4 The ambient air should be free from the dust, smoke, corrosive and flammable gas, steam, salt fog, et…

1. Main specifications and technical parameters