ZW20-12 outdoor high voltage AC boundary vacuum circuit breaker
product information
Product name: ZW20-12 outdoor high voltage AC boundary vacuum circuit breaker
Category: high voltage components
Product introduction: ZW20B-12 outdoor pole-mounted high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and a three-phase AC 50Hz.
Overview of ZW20-12 outdoor high voltage AC boundary vacuum circuit breaker
The ZW20B-12 outdoor pole-mounted high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and a three-phase AC 50Hz. Mainly used for breaking and closing the load current, overload current and short circuit current of the power system. It is suitable for protection and control of substations, industrial and mining enterprises and urban and rural power distribution networks, and is especially suitable for places with frequent operations and area network automation power distribution networks. This product is matched with the controller, which can meet the requirements of the distribution automation system, and can reliably and effectively complete the traditional recloser function. It adopts a mature box-type sealing structure and is 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. The spring operating mechanism adopts a direct-acting chain main drive and a multi-stage tripping system, which has high reliability and is a good product for pole-mounted circuit breakers.
The main technical parameters
| Serial number |
project |
unit |
Numerical value |
| 1 |
Rated voltage |
kV |
12 |
| 2 |
Rated frequency |
Hz |
50 |
| 3 |
Rated current |
A |
630 |
| 4 |
Rated short-circuit breaking current |
KA |
20 |
| 5 |
Rated making current peak |
KA |
50 |
| 6 |
Rated dynamic stability current bee value |
KA |
50 |
| 7 |
4s thermal stability current |
KA |
20 |
| 8 |
Rated operating sequence |
|
Split-0.3s-Combined Split-180s-Combined Split |
| 9 |
Rated energy storage motor voltage |
V |
AC220 |
| 10 |
Maximum/minimum energy storage motor voltage |
V |
AC242/187 |
| 11 |
Rated closing operating voltage |
V |
AC220 |
| 12 |
Maximum/minimum closing operating voltage |
V |
AC264/143 |
| 13 |
Rated opening operating voltage |
V |
AC220 |
| 14 |
Maximum/minimum opening operating voltage |
V |
AC264/143 |
| 15 |
Different period of closing |
ms |
≤2 |
| 16 |
Different period of opening |
ms |
≤2 |
| 17 |
Rated pressure of SF6 gas (gauge pressure) |
Mpa |
0.01 |
| 18 |
Rated short-circuit current breaking times |
Second-rate |
30 |
| 19 |
Mechanical life |
Second-rate |
10000 |
