Ceneral

ZW20–12 series outdoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) for rated voltage 12kV, three-phase AC 50Hz outdoor distribution equipment. It adopts vacuum arc and SF6 gas as insulation medium, is an innovative product column vacuum circuit breaker. The box uses a gas introducing Japanese Toshiba Co VSP5 seal, explosion proof, insulation technology, import line pipe are improved sealing performance, the overall excellent sealing performance, internal filling SF6 gas does not leak, not affected by the external environment; the spring operating mechanism for the miniaturization design and the reliability and stability of the optimization, the straight the main drive chain and multi release system, operating reliability and stability than spring operation mechanism of domestic traditional improved several times; between the main circuit of pin and Bush contact with adduction and a bracelet of main circuit structure, the contact resistance of small, low temperature rise. So, ZW20–12 outdoor column vacuum circuit breaker is a maintenance free products, is the column circuit breaker in the share.

ZW20–12F outdoor intelligent demarcation switch design, our company's R & D a new distribution network automation products. The product is zero sequence voltage sensor and the zero sequence current transformer, with Ma level zero sequence fault bounds and out of bounds by automatic detection, high precision ZCT and ZPD to measure the phase calculation can judge accident between zero sequence current and zero sequence voltage is in the user side or on the power source side, through the phase of ZPD VO and ZCT the difference of IO were detected, can judge the grounding current direction in any circumstances, and make corresponding action, is more accurate than the just judgment of zero sequence current.

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Outline and mounting dimension