... , 12/20 kV (24 kV), 8.7/10kV, 8.7/15kV, 6/6kV, 6/10kV,0.6/1kV.2. No. Of core ... .6kV or lower: 2.5Uo+2kV/5min without puncture. For cable with Uo of 3.6Kv~18kV: 3.5Uo/5min without puncture ... cableThis series includes: Copper (aluminum) core, XLPE insulated and sheathed power cables Copper (aluminum) core, XLPE insulated, PE sheathed power cables Copper (aluminum) core, XLPE insulated, steel tape armored ...