A burn-down prevention method of HDPE insulator

Covered conductors have been used on high as well as low voltage overhead distribution lines for preventing brush contact and short circuit failure between conductors. Conductor bum-down has frequently occurred on covered conductors, but bum-down seldom occurs on bare conductors. Therefore it has become a problem. Burn-down happens because a high electric field region occurs around covered conductors. There are some factors for that. We noticed some factors and identified a bum-down prevention method of HDPE Insulator using the finite element method electric field simulation. In this paper, we propose this method because useful results were obtained. (Author)