Product Center
ZW8-12 Vacuum Circuit Breaker
Specification
|
Serial number |
parameter name |
Value |
|
1 |
Rated voltage |
12KV |
|
2 |
Rated current |
630A |
|
3 |
Power frequency withstand voltage |
42kV/48kV |
|
4 |
Mechanical life |
10000 |
|
5 |
Isolation new port disconnect distance |
> 200mm |
|
6 |
Average opening speed |
1.0+0.2m/s |
|
7 |
Average closing speed |
0.7+0.15m/s |
Parameter
|
Rated voltage |
KV |
12 |
||
|
Max. operating voltage |
KV |
12 |
||
|
Rated current |
A |
630 |
||
|
Rated short circuit load breaking current |
KA |
20 |
||
|
Rated short circuit making current (peak) |
KA |
50 |
||
|
Rated p-eak withstand current |
KA |
50 |
||
|
Rated short time withstand current 1 min |
KA |
20 |
||
|
Rated insulation Power level |
Power frequency withstand voltage (dry) |
KV |
42 |
|
|
Lig htning impulse withstand voltage (peak} |
KV |
75 |
||
|
Rated operating sequence |
|
(O)-0.3s{CO)-180s (CO) |
||
|
Mechanical life |
time |
10000 |
||
|
Nos of breaking rated short circuit breaking current |
time |
30 |
||
|
Rated dosing voltage of operating mechanism |
V |
110,220 |
||
|
Rated opening voltage of operating mechanism |
V |
110,220 |
||
|
Opening distance of contact |
mm |
11 ±1 |
||
|
Over travelling distance (spring compressed length of contact} |
mm |
3 |
||
|
Asynchrony of opening or closing three phases |
ms |
≤2 |
||
|
Jumping time of contact closing |
ms |
≤2 |
||
|
Average opening speed |
s |
1.0±0.2 |
||
|
Average closing speed |
s |
0 7±0.15 |
||
|
Opening time |
Under highest operating voltage |
s |
0.015-0.05 |
|
|
Under lowest operating voltage |
s |
0.03-0.06 |
||
|
Closing time |
s |
0.025-0.05 |
||
|
Main circuit resistance of each phase |
卩C |
≤120 |
||
|
Permissible abraded thickness of moving and static contacts |
mm |
3 |
||
