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 500 kV（Um=550 kV）― Part 2: Power cables with cross-linked polyethylene insulation for rated voltage of 500 kV (Um=550 kV)