YJLHV22 8.7/10kV、8.7/15kV 三芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套铝合金电力电缆 YJLHV22 8.7/10kV、8.7/15kV 3 cores XLPE insulated steed tape armored PVC sheathed AL.-R.E -Iron alloy power cable