40.5kv Handcart -type Indoor High Voltage AC Solid-closure Vacuum
NINGBO TIANAN (GROUP) CO., LTD.
VT19-40.5EP type indoor HV vacuum circuit breaker is indoor
switchgear,used for three-phase 50Hz,35KV electric power system. It
is a control and protective unit,applied in electricutility of
industrial and mining company ,power station and substation.
Because of its special superiority, it is also suitable for the
occasions requiring frequent operation rated working voltage or
repeatedly break short-circuit current.It has reliable interlock
function,and not only serves as handcart unit,but also as fixed
3.Earthquake intensity:Below level 8.
5. No fire,water drop ,explosion, serious filthy, chemical corrosion
and violent vibration of places.
6.Environment humidity: month average relative humidity ≤90%, daily
average relative humidity ≤95%.
7.Customers have other special requirements, can be in order to put
forward, our company can offer most satisfied.
|Rated lighting impulse withstand voltage(between phases,phase to
earth) /isolated fracture||185|
|Rated 1min power withstand voltage(between phases,phase to earth)
|Rated operation sequence||O-0.3s-CO-180s-CO|
|Rated current (A)||630,1250||1250~3150||1250~3150||3150,4000|
Mechanical Characteristics Parameters of CB
|Clearance between Open contacts||mm||18±1|
|Three-phase opening & closing non-synchronous||ms||≤2|
|Bounce time of closing contact||ms||≤3|
|Contact pressure of Closing Contact||Opening|
|Closing||2000±200 2700±200 3100±200|
|Average opening speed||m/s||1.4~1.8|
|Average closing speed.||0.5~0.9|