Detailed Product Description

VH1 (40.5KV) series indoor high voltage vacuum circuit breaker is produced by our company based on the 3AF product technology introduced from German Siemens AG.

Model VH1(40.5KV) circuit breaker features compact structure operating mechanism, reliable performance, large capacity, strong breaking capability etc, In order to adapt to higher requirement for insulation level due to nonearthed grid neutral point in China, we have made necessary improvement for various insulation pieces of circuit breaker, so insulation level of circuit breaker could fully satisfy national standards and standards issued by the Ministry of Electric Power.

Main rotating parts of Model VH1 (40.5KV) product adopt special bearing with solid lubricant, reduces user's maintenance workload, our company has designed and manufactured products with multiple phase-to-phase distances, such as 350mm, 400mm, 460mm etc, of which product with 460mm phase-to-phase distance does not require isolating partition between phases, this increases operational reliability, facilitates user to match it with switch cabinets of different types. At the same time, our company has also developed plateau type products to be used at altitude up to 3000m in western high altitude district.

Technical Parameters:

1.Rated voltage:   40.5kV
2.Rated current:   1250,1600,2000,2500
3.Rated circuit breaking current:   25kA, 31.5kA
4.Rate short time withstand current:   25kA, 31.5kA
5.Power frequency withstand voltage for 1 min:   95kV
Lingtning impulse withstand voltage:   185kV
6.Rated short circuit duration:   4s
7. Rated operating sequence:   O-0.3s-C/O-180s-C/O
8.Mechanical Service Life:   20000times
9.Closing Time:   45-85ms
10.Opening Time:   40-70ms