额定电压220kV(Um=252kV)交联聚乙烯绝缘电力电缆及其附件 第3部分:额定电压220kV(Um=252kV)交联聚乙烯绝缘电力电缆附件
Power cables with cross-linked polyethylene insulation and their accessories for rated voltage of 220kV(Um=252kV) —Part 3:Accessories for power cables with cross-linked polyethylene insulation for rated voltage of 220kV(Um=252kV)