ZW7-40.5 型(Xing)户(Hu)外(Wai)高(Gao)压(Ya)真(Zhen)空(Kong)断(Duan)路(Lu)器(Qi)用(Yong)于(Yu)交(Jiao)流(Liu) 50Hz 、(?)额(E)定(Ding)电(Dian)压(Ya)为(Wei) 40.5kV 的(De)三(San)相(Xiang)电(Dian)力(Li)系(Xi)统(Tong)，(?)作(Zuo)为(Wei)分(Fen)断(Duan)、(?)关(Guan)合(He)负(Fu)荷(He)电(Dian)流(Liu)、(?)过(Guo)载(Zai)电(Dian)流(Liu)及(Ji)短(Duan)路(Lu)电(Dian)流(Liu)之(Zhi)用(Yong)。(?)
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