Outdoor high voltage vacuum circuit breaker
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ZW20A-12 Series Outdoor High Voltage Vacuum Circuit Breaker
Application
The ZW20A-12 is an advanced version of the ZW20-12 column vacuum circuit breaker with a mature box seal. Filled with SF6 gas, it has a good sealing performance, so that it is not affected by the external environment. It is a maintenance free product. Its spring operating mechanism adopts direct chain active transmission and multi-stage tripping system, which has high reliability and is the best choice for the circuit breaker on the pillar.
|
No. |
Item |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Rated frequency |
Hz |
50 |
|
3 |
Rated current |
A |
630，1250 |
|
4 |
Rated short circuit breaking current |
kA |
12.5、16、20、25 |
|
5 |
Rated peak withstand current |
kA |
31.5、40、50、63 |
|
6 |
Rated short time tolerance current（4s） |
kA |
12.5、16、20、25 |
|
7 |
Rated short circuit opening and closing current |
kA |
31.5、40、50、63 |
|
8 |
Institution life |
time |
10000 |
|
9 |
Rated short open circuit current switch frequency |
time |
30 |
|
10 |
Rated current open circuit frequency |
time |
10000 |
|
11 |
· Power frequency withstand voltage (1min) : phase, ground/fracture |
kV |
42/48 |
|
12 |
Lightning shock withstand pressure（peak）phase, ground/fracture |
kV |
75/85 |
|
13 |
· Power frequency withstand voltage of the secondary circuit ）（1min） |
kV |
2 |
|
14 |
Net weight |
kg |
140 |
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