▎ 摘　　要

NOVELTY - The utility model claims a large-section aluminium alloy core single-core stainless steel belt armoured middle-voltage power cable, comprising an aluminium alloy conductor, anti-stretch and steel wire graphene powder, the outer side wall of the aluminium alloy conductor is covered with a PET polyester film, the outer side wall of the PET polyester film is covered with a polyethylene insulating layer, the outer side wall of the polyethylene insulating layer is covered with a rubber damping layer. The utility model protects the aluminium alloy conductor by stretch steel wire and stainless steel belt armour layer, enhances the rigidity of the whole, so as to avoid the aluminium alloy conductor from over-bending damage as to avoid the heat transmission to the aluminium alloy conductor in the stretch-steel wire and stainless steel belt through the gas-gel insulating layer, The polyurethane heat-insulating layer can prevent the stainless steel belt directly from the polyethylene insulating layer, contact as to avoid the polyvinyl chloride protective layer directly with the stainless steel belt contact accelerate aging, prolongs the service life of the polyvinyl chloride protective layer.