Classification of voltage levels: 1.
Low-voltage cable: (0.6/1KV) Single Core Multi-Core Copper or aluminium conductor, Steel tape armored, galvanized steel wire armored or unarmored; PVC outer sheath. suitable for fixed laying on power transmission and distribution lines with AC 50Hz and rated voltage 3kv and below for power transmission.
2. Medium and low voltage cables: (1KV~35KV)Multi-cores, copper tape armored or copper wire screen, Galvanized steel wire armored, PVC insulated cables, polyethylene insulated cables, XLPE insulated cables, PVC or PE sheath.
3. High-voltage cables: (35KV~220KV)Copper or aluminium conductor, Metal sheath (lead or corrugated aluminium), polyethylene cables and XLPE insulated cables, HDPE or PVC outer sheath power cable.