This book presents a comprehensive exposition of the various principles and techniques involved in high voltage engineering. Several new topics such as vacuum insulation,vacuum breakdown,practical applications of vacuum insulation,breakdown of composite insulation/insulation systems have been included. This edition also incorporates the recent developments in the area of production and measurement of high voltage. It further includes an updated and comprehensive exposition of high voltage and extra high voltage AC power transmission. The exposition has been illustrated by suitable solved examples,charts and tables throughout the text. Practice problems and exhaustive references have been presented at the end of various chapters.