MANUFACTURING METHOD OF OIL-IMPREGNATED PAPER SOLID CABLE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method capable of increasing a breakdown voltage in a heat cycle, in an oil-impregnated paper solid cable of 300 kV or more. SOLUTION: A cover 11 for covering at least a paper rolling machine 10 and a cable core 1 rolled in insulation paper by the rolling machine is installed, and the insulation paper with moisture level previously set about to 2.5 wt.% or below is wound around a conductor while feeding and running dry air 13 having a relative humidity of around 5% into the cover.