ZW8-12 (G) outdoor high voltage vacuum circuit breaker
Technical Parameters
|
Serial number |
Name |
Unit |
Data |
|
|
1 |
Rated voltage |
kV |
12 |
|
|
2 |
Rated current |
A |
630 |
|
|
3 |
Power frequency dry withstand voltage (1min) |
kV |
42 |
|
|
4 |
Lightning impulse withstand voltage (bee value) |
75 |
||
|
5 |
Rated short-circuit breaking current |
|
16 20 25 |
|
|
6 |
Rated short-circuit making current |
40 50 63 |
||
|
7 |
Rated peak withstand current |
kA |
40 50 63 |
|
|
8 |
4s short-time withstand current |
16 20 25 |
||
|
9 |
Rated operating sequence |
|
Open-0.3s-Close-Open-180s-Close-Open |
|
|
10 |
Rated short-circuit current breaking times |
Second-rate |
30 |
|
|
11 |
Mechanical life |
10000 |
||
|
Energy storage motor rated voltage |
V |
DC or AC220 |
||
|
12 |
Rated operating voltage with special spring operating mechanism |
Opening coil |
||
|
Closing coil |
||||
|
13 |
Rated current of overcurrent release |
A |
5 |
|
|
14 |
Allowable wear thickness of moving and static contacts |
mm |
3 |
|
|
15 |
Contact opening distance |
mm |
11±1 |
|
|
16 |
Overtravel (contact spring compression length) |
mm |
|
|
|
17 |
Different phases of three-pole closing and opening |
ms |
≤2 |
|
|
18 |
Contact closing bounce time |
ms |
≤2 |
|
|
19 |
Average opening speed |
m/s |
1.0±0.2 |
|
|
20 |
Average closing speed |
m/s |
0.7±0.15 |
|
|
21 |
Opening time |
High operating voltage |
s |
0.015-0.05 |
|
low operating voltage |
s |
0.03-0.06 |
||
|
22 |
Closing time |
s |
0.025-0.05 |
|
|
23 |
Main circuit resistance |
μΩ |
≤120 |
|