GB 12976.3-1991 Copper or aluminium conductor paper-insulated power cables with rated voltages up to 35 kV Part 3:Resin oil impregneted paper-insulated metal-sheathed power cables
Copper or aluminium conductor paper-insulated power cables with rated voltages up to 35 kV Part 3:Resin oil impregneted paper-insulated metal-sheathed power cables