ZN85-40.5/T(3AV3) Indoor AC High-voltage Vacuum Breaker is indoor switch equipment of triphase 50HZ,rated pressure 40.5Kv.This breaker agrees with GB1984-1989AC high-voltage breaker, JB3855-19963.6-40.5Kv indoor AC high-voltage vacuum breaker and IEC relative standard.

This breaker can be used in industrial and mining establishment, power plant and substation as opening and closing load current, overload current and failure current .It can be used in frequent operation situation.

Using Condition,

a.----------- elevation,≤2000m

b.----------- -ambient air temperature,upper limit +40 daily- average- level- less- than- 35 , lower -limit -15

c.----------- daily average value of relative humidity should be less than 95%, monthly average level should be less than 90%, daily average level of water vapour pressure less than 2.2kpa, monthly average level of water vapour pressure less than 1.8kpa

d.----------- earthquake level, less than level 8

e.----------- no fire ,no danger of explosion ,no rusty gas, and no violent exercise

f.----------- inductive EMI(electro magnetic interference ) amplitude of second order system should be less than 1.6Kv

g.----------- power conditions,DC110V.220V,AC110V.220V

h.----------- If you have some special orders , please raise -when ordering. We will try our best to satisfy.