额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件 第1部分: 额定电压500kV(Um=550kV)交联聚乙烯绝缘电力电缆及其附件 试验方法和要求
Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 500kV(Um=550kV) - Part 1: Power cable systems-cables with cross-linked polyethylene insulation and their accessories for rated voltage of 500kV (Um=550kV) - Test methods and requirements