1996 Volume 116 Issue 11 Pages 1382-1387
The voltage due to lightning surge is now a major problem to be overcome to ensure full reliability of power supply. Hence, gappless oil immersed surge arresters using zinc oxide elements have been applied to pole transformers. These surge arresters are intended as insulation coordination means for pole tranformers. These arresters contribute to the reduction of number of failure of pole tranformers. This paper describes applications and effects of specially developed oil immersed surge arresters in pole tranformers on 6.6kV distribution lines.