A new chemical approach to water treeing in xlpe insulation

Abstract

As the most important problem for crosslinked polyethylene (XLPE) insulated power cable, the nature of water treeing has been studied with great efforts. And recently, some insulating materials to be watertree resistive have been proposed. However, the substantial mechanism of water treeing has been left still unclarified in spite of the importance of complete suppression of water treeing. In this paper, the nature and morphology of XLPE with o r without water tree were examined by means of analytical instruments tnd the influence of contack with certain fluids on water treeing without water was investigated. A theoretical mechanism on water treeing will also be discussed.