Vacuum Circuit Breaker

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.

Item Unit Parameter
Rated voltage kV 40.5
Rate voltage kV 95
Lighting impulse withstand voltage kV 185
Rated frequency Hz 50
Rated current A 1250、1600、2000
Rated short-time withstand current kA 25、31.5
Rated peak value withstand current kA 63、80
Rated short-circuit duration s 4
Rated short-circuit breaking current kA 25、31.5
Rated short-circuit making current kA 63、80
Rated operation sequence O-0.3s-CO-180s-CO
Breaking time ms <80
Rated short-circuit current breaking times times 20
Single capacitor bank breaking current A 630
Back-to-Back capacitor bank breaking current A 400
Rated control voltage V AC110、220;DC110、220
Mechanical life times 10000

1.Opening spring

2.Main shaft

3.Regulating lever of intermediate phase

4.Driving rod

5.Driving board 2

6.Contac spring

7.Driving board 3

8.Driving board 4

9.Driving board 1

10.Regulating lever of side phase

11.Rod end bearing

2.1The ambient air temperature should be -15℃~40℃, the daily average temperature should not exceed 35℃.
2.2 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.
2.3 Altitude: Not exceed 1,000m.
2.4 The ambient air should be free from the dust, smoke, corrosive and flammable gas, steam, salt fog, et…