A Perspectuce on Insulation Systems in the Electric Power Industry

The insulation systems of major power system components are reviewed in the context of the environment in which they must function. The viewpoint is that of a power engineer rather than a materials scientist. The compound nature of stress - electrical, mechanical, and thermal, is emphasized. The strengths and shortcomings of traditional insulating materials are considered and the implications of power system trends are analyzed as far as insulation is concerned. Current problems and challenges are described.