CROSSLINKED POLYOLEFIN COMPOSITION, DIRECT-CURRENT POWER CABLE, AND PROCESS FOR CONSTRUCTION OF DIRECT-CURRENT POWER LINE

摘要

Provided is a direct-current power cable which does not suffer from deterioration in electrical characteristics even after high-temperature heat history. The direct-current power cable can be produced by using, as the insulation layer, a crosslinked polyolefin composition which comprises (1) 100 parts by mass of a polyolefin, (2) 0.1 to 5 parts by mass of carbon black, (3) 0.02 to 2 parts by mass of triallyl isocyanurate and/or trimethallyl isocyanurate, and (4) a prescribed amount of a crosslinking agent consisting of an organic peroxide.