Summary:

Zw20-12 outdoor pole mounted high voltage vacuum circuit breaker is an outdoor high voltage switchgear with rated voltage of 12 kV and three-phase AC of 50 Hz. It is mainly used for breaking and closing load current, overload current and short circuit current of power system. It is suitable for protection and control of substations, industrial and mining enterprises and urban and rural distribution network, especially for places with frequent operation and urban distribution network automation. This product is matched with the controller, which can meet the requirements of the distribution automation system, and can reliably and effectively complete the function of the traditional recloser. It adopts a mature box type sealing structure and is filled with SF6 gas. It has good sealing performance and is not affected by the external environment. It is a maintenance free product. The spring operating mechanism adopts direct chain main drive and multi-stage tripping system, which has high reliability and is a good product of pole mounted circuit breaker.

Normal use conditions:

The altitude should not exceed 3000m;

The upper limit of ambient air temperature shall not exceed 40 ℃, the lower limit shall not exceed - 40 ℃, and the daily temperature difference shall be 25 ℃;

The wind pressure shall not exceed 700pa;

Pollution level: grade IV;

The icing thickness is 100 mm;

Installation site: no inflammable, explosion hazard, chemical corrosion site;

The seismic range is no more than 8 degrees.

Model meaning:

Main technical parameters：

Outline and installation dimensions：