额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件 第2部分: 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆
Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 500kV (Um=550kV) - Part2: Power cables with cross-linked polyethylene insulation for rated voltage of 500kV (Um=550kV)