High Quality ZW7-40.5/630A-1250A-31.5ka Circuit Breakers 30KV 33KV 36KV 40.5KV Outdoor VCB 1250A Vacuum Circuit Breakers 12KV

Overview
ZW7-40.5F(M)outdoor high-voltage intligent (permanent magnet)vacum circuit breaker uses a uniquely designed split pole and high reliability spring operating mechanism or permanent magnet operating mechanism.The device is mainly used in medium-voltage overhead line power grids as a branching and closing load current,overload current,and short-circuit current.

Environmental conditions
◆Ambient temperature:not higher than+40℃,not lower than-15℃;
◆ Relative humidity of air:daily average value is not greater than 95%,monthly average value is not greater than 90%;
◆Altitude does not exceed 1000 meters;
◆ Theseismic intensity does not exceed 8;
◆No fire,explosion,severe pollution,chemical corrosion and violent vibration.
Note:f the customer has other special requirements,he can put forward at the time of order,and our company will give the greatest satisfaction.

Technical Data

project Unit Parameter
Rated voltage kV 40.5
Rated current A 1250/1600
Rated frequency Hz 50或60
Power frequency withstand voltage 1min (wet)(dry) interphase,ground /fracture kV 8095/95
Lightning impulse withstand current(peak)interphase, ground /fracture kA 185
Rated short-circuit breaking current kA 25/31.5
Rated short-circuit making current(peak value) kA 63/80
Rated peak withstand current kA 63/80
4S short-time withstand current kA 25/31.5
Rated operating cycle Points-0.1s-Combined-3s-Combined-6s Combined-60s Recovery
Breaking times of rated short-circuit current Times 30
Mechanical life Times 10000
Mechanism control voltage V AC/DC220
Secondary circuit 1min power frequency withstand voltage kV 2
Contact opening mm 18±1
Contact overtravel mm 4±0.5
Opening speed m/s 1.4-1.8
Closing speed m/s 0.4-0.8
Bounce time of contact closing ms ≤5
Center distance mm 710±2
Different phases of three-phase opening and closing ms ≤2
Conductive loop resistance of each phase μΩ <80
Closing time ms ≤100
Opening time ms ≤50
weight KG 800

Dimensions