Leakage currents on non-ceramic insulators and materials

This paper presents a review of leakage current (LC) measurements on noncer amic insulators and material samples. It is divided into two parts: First, the field investigations of LC, include a development of re measuring syste ms and how the on-line LC measurements correlate to the insulator performan ce as well as to the atmospheric and pollution parameters. Then, the labora tory investigations, describe how the LC are used to evaluate materials, to develop new testing procedures and to predict insulator performance. An ex tensive bibliography and additional references is provided.