Design and performance of external gap type line arrester line arrester; Series gap; Metal oxide element; Polymeric housing; Follow current interruption; Insulation coordination; Shield system; Compact design of arrester

摘要

External gap type line arresters have been applied in overhead transmission lines for more than 15 years in Japan. They are used for the important lines and/or those with considerable lightning problems, and lightning protection performance with the arresters has been proven. This paper introduces design and performance of external gap type line arresters. A compact design of the arrester is also introduced as a recent technology.