GB 12976.2-1991 Copper or aluminium conductor paper-insulated power cables with rated voltages up to 35 kV Part 2:Non-draining oil impregnated paper-insulated metal-sheathed power cables
Copper or aluminium conductor paper-insulated power cables with rated voltages up to 35 kV Part 2:Non-draining oil impregnated paper-insulated metal-sheathed power cables