POWER CABLE, AND METHOD FOR MANUFACTURING POWER CABLE

Provided is a power cable and a method for manufacturing a power cable that reduce occurrence of uneven thickness of an insulating layer and voids and peeling due to shrinkage, and have good dielectric breakdown strength.A power cable 1 according to the present invention contains a propylene-based resin in a specific range as an insulating layer 13, and has a specific relationship between the cooling rate X at the time of manufacturing the interface portion in the insulating layer 13 with an inner semiconductive layer 12 and the cooling rate Y at the time of manufacturing the central portion of the insulating layer 13. Thus, not only the surface of the insulating layer 13 but also the inside of the insulating layer 13, the interface portion in the insulating layer 13 with the inner semiconductive layer 12, and the inside thereof are reliably cooled and cured. Therefore, the metal conductor 11 is not displaced from the center of the power cable 1 due to its own weight, and uneven thickness is less likely to occur. In addition, distortion of cooling shrinkage is dispersed, so that occurrence of voids due to shrinkage is suppressed, and the power cable 1 having good dielectric breakdown strength is obtained.