XLPE cable maintenance method for high voltage motor stator

摘要

The present invention relates to a method of repairing a cross-linked polyethylene (XLPE) cable (10) wound on a stator of a high-voltage motor and damaged by insulation breakdown, etc., wherein the damaged part (1) of the cable (10) is removed. A cutting step (S10) of removing by cutting and removing the covering (15) so that the copper wire (11) is exposed at each end of the cable (10) separated by the cutting (S10); A joining step (S20) of placing the copper wires 11 of the cable 10 in contact with each other, and welding the butt copper wires 11 to a single joint; a covering step (S30) of preparing a covering tape 20 of the same material as the covering 15, winding the covering tape 20 so that the single bonded copper wire 11 is hidden; and a molding step (S40) of pressing the covering tape 20 wound around the cable 10 and heating the covering tape 20 to integrate it with the covering 15. Therefore, the present invention avoids the replacement method that takes about 30 days to 6 months by rewinding the existing damaged cable to the stator, and introduces a restoration method in which only the damaged part of the cable is removed and then rejoined, thereby repairing the high voltage motor. As the man-hours required can be greatly shortened, more efficient facility maintenance is possible, and by performing the inspection process to diagnose the condition of the restored cable, it has the effect of guaranteeing the overall health and reliability of the cable.