The MV cable (6kV~30kV) has the construction of a conductor (copper or aluminum, max. cross section:1000mm2) insulated with the cross-linked polyethylene(provide superior heat resistance 90℃), shielded with metallic screen (metallic tapes or wires etc.) and armored with metal tape/wires according to requirements, finally to be covered by extruded PVC (ST2), PE (ST7) or halogen free (ST8) sheath for anti-corrosion.