ZN85-40.5 Indoor high voltage vacuum circuit breaker (VCB)

  1. General
ZN85-40.5G(3AV3) indoor AC HV Vacuum circuit breaker(hereinafter called circuit breaker)is applicable for power system with three-phase AC50/60Hz,40.5kV, used for industrial and mining enterprises, power plants and transformer substations to protect and control equipemnts, also, it can be used in the location where with frequent operating. for more detailed information.
2. Service Environment
Environmental temperature is from:-15~40 C;
Environmental humidity:
Daily average of relative humidity 95%
Daily average saturated vapor pressure 2.2 10-3Mpa
Monthly average of relative humidity 90%
Monthly average saturated vapor pressure 1.8 10-3Mpa
Keep away from such environment as subject to dust, dirt, smog, corrosive/flammable gas, vapor and salt pollution.
3. Technical Parameter
CodeItemUnitData
1Rated voltagekV40.5
2Rated insulation level1 min power frequency withstand voltage (virtual value)kV95
Lighting impulse withstand voltage (peak)kV185
3Rated frequencyHz50
4Rated currentA 1250 1250,1600,2000
54s Rated short-time withstand currentkV 25 31.5
6Rated peak withstand currentkV63 80
7Rated short-circuit breaking currentkV 25 31.5
8Rated short-circuit making currentkV 63 80
9Rated operating sequence0-0.3-CO-180S-CO40.5
10Rated short-circuit breaking current times20
11Rated breaking current of capacitor bankA630
12Mechanical endurance10000
Product Details:
Type Vacuum
Poles Number 3
Place of Origin Zhejiang, China
Brand Name WANKONG
Model Number ZN85-40.5