Abstract
Water-tree degradation of underground cross-linked polyethylene (XLPE) cables has been concerned. However, it seems that there is no reports of water-trees for XLPE cables with the termite preventive layer. We focus on investigation of a water shielding effect due to the termite preventive layer of the XLPE cable. The results showed that the water absorption rate of the insulting vinyl sheath was 3.18 times higher than that of a termite preventive layer at 70℃. Thus, the high - water shielding effect of XLPE cable with the termite preventive layer was confirmed.
