Delivery Time:30 Days
Certification:CE, QS, CCC
JB3855 - 1996 VS1 Rated Short -Circuit 4s Indoor 12kV generator Vacuum air Circuit Breaker
Main specifications and technical parameters(Refer to Tab 1)
Tab 1
|
No |
Item |
Unit |
Technical data |
||
|
1. |
Rated voltage |
kV |
12 |
||
|
2. |
Rated short-time power frequency withstand voltage (1min) |
42 |
|||
|
3. |
Rated lightning impulse withstand voltage (peak value) |
75 |
|||
|
4. |
Rated Frequency |
Hz |
50 |
||
|
5. |
Rated current |
A |
630 1250 |
630 1250 1600 2000 2500 3150 |
1250 1600 2000 2500 3150 4000* |
|
6. |
Rated short circuit breaking current |
kA |
25 |
31.5 |
40 |
|
7. |
Rated short time withstand current |
25 |
31.5 |
40 |
|
|
8. |
Rated short-circuit duration |
s |
4 |
||
|
9. |
Rated peak value withstand current |
kA |
63 |
80 |
100 |
|
10. |
Rated short-circuit closing current (peak value) |
63 |
80 |
100 |
|
|
11. |
Secondary circuit power frequency withstand voltage(1 min) |
V |
2000 |
||
|
12. |
Rated single/ back-to-back capacitor bank breaking current |
A |
630/400 (40 kA for 800/400) |
||
|
13. |
Rated capacitor bank making rush current |
kA |
12.5(frequency no more than 1000Hz) |
||
|
14. |
Opening time |
ms |
20~50 |
||
|
15. |
Closing time |
35~70 |
|||
|
16. |
Mechanical life |
Time |
10000 30000 60000 |
||
|
17. |
Breaking times at rated short-circuit current |
Time |
50 (40 kA for 30) |
||
|
18. |
Permissible wear accumulated thickness of moving and fixed contact |
mm |
