ZW7B-30kV(40.5kV) Outdoor Vacuum Circuit Breaker
This series of outdoor high-voltage vacuum circuit breakers adopts a uniquely designed split pole and a highly reliable spring operating mechanism or permanent magnet operating mechanism. This device is mainly used in medium voltage overhead lines The power grid is used to divide and combine load current, overload current and short-circuit current. It can also be used in the circuit of high-voltage SVG energy storage power station as the main incoming line switch.
This outdoor high-voltage vacuum circuit breaker is mainly composed of integrated poles, current transformers, operating mechanisms, mechanisms and boxes.
This model of circuit breaker is miniaturized in design and its casing is made of high-quality steel box. Current transformers can be selected according to user needs.
The circuit breaker can be combined with matching intelligent control. The switch opening and closing operation can be realized locally or remotely controlled through the communication interface.
Other information of the circuit breaker can also be transmitted to the control center, and the communication channel can choose cable, optical fiber, GPRS/CDMA, GSM, etc.
|
Project |
Unit |
Data |
|
Rated voltage |
kV |
40.5 |
|
Rated current |
A |
630/1250/1600 |
|
Rated frequency |
Hz |
50/60 |
|
Power frequency withstand voltage for 1 minute (wet) (dry) phase to phase, ground/fracture |
kV |
80 95 / 95 |
|
Lightning impulse withstand current (peak) phase to phase, ground/fracture |
kA |
185 |
|
Rated short circuit opening current |
kA |
25/31.5 |
|
Rated short circuit making current (peak value) |
kA |
63/80 |
|
4S short-term withstand current |
kA |
25/31.5 |
|
Rated operating cycle |
Divide - 0.1s - Divide together - 3s - Divide together - 6s Divide together - 60s recovery |
|
|
Rated short circuit current breaking times |
Second-rate |
30 |
|
Mechanical life |
Second-rate |
10000 |
|
Mechanism control voltage |
V |
AC/DC220 |
|
Secondary circuit 1min power frequency withstand voltage |
kV |
2 |
|
Contact spacing |
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 |
|
Contact closing bounce time |
ms |
≤5 |
|
distance between centers |
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 |
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Tel：+86 15538537280
Email：lycnelectric@163.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province
