ZW20A-12 Outdoor Boundary Vacuum CircuitBreaker(Boundary Switch)
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Product Description
- 产品描述
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Overview
The ZW20A-12 outdoor column mounted high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV and three-phase AC50Hz. Mainly used for breaking and closing load current, overload current, and short circuit current of power systems. Suitable for protection and control ofsubstations, industrial and mining enterprises, as well as urban and rural distribution networks, especially suitable for frequently operated places and urbanautomation distribution networks. This product is paired with a controller, which can meet the requirements of distribution automation systems and reliably andeffectively complete traditional recloser functions. It adopts a mature box sealing structure, filled with SF6 gas inside, and has good sealing performance, making itnot affected by the external environment. It is a maintenance free product. Its spring operating mechanism adopts a direct chain main transmission and a multi-stage release system, with high action reliability, making ita good choice for column mounted circuit breakers.
Main technical parametersName Unit Data Rated voltage kV 12 Rated frequency Hz 50 Rated current A 630、 1000 Rated short-circuit breaking current kA 20、 25 Rated peak making current kA 50、 63 Rated dynamic stability current peak value kA 50、 25 4s thermal stability current kA 20、 63 Rated operating sequence - divide-0.3s-On-off-180s-On-off Rated energy storage motor voltage - AC220 Maximum/minimum energy storage motor voltage V AC242/187 Rated closing operating voltage V AC220 Maximum/minimum closing operating voltage V AC264/143 Rated opening operating voltage V AC220 Maximum/minimum opening operating voltage V AC264/143 Closing at different stages ms 2 Opening different periods ms 2 Rated pressure of SF6 gas (gauge pressure) Mpa 0.01 Rated short-circuit current breaking times times 30 Mechanical life times 10000
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