Manufacture method for low-voltage electric power cable used for nuclear power station

The invention discloses a manufacture method for a low-voltage electric power cable used for a nuclear power station, which comprises the following steps: sorting; drawing wires; annealing; twisting a conductor; lapping an isolation layer; extruding the isolation layer; carrying out irradiation crosslinking processing to the isolation layer; cabling and filling; sheathing the isolation layer; armoring; extruding an outer sheath; carrying out irradiation crosslinking processing to the outer sheath; and obtaining a finished product. The manufacture method is characterized in that the step of extruding the isolation layer adopts double-layer coextrusion, wherein an inner layer adopts a polyethylene (PE) screw, and an outer layer adopts a semi-extruded die; the step of extruding the outer sheath adopts the semi-extruded die; the screw with the compression ratio of 1.25:1-2.0:1 sheathes low-smoke halogen-free thermosetting polymer on the isolation layer subjected to irradiation crosslinking processing to form the