ABSTRACT
Electrical insulating liquids are used abundantly in a variety of components of power system networks, such as transformers, power cables, circuit breakers, power capacitors, bushings and switches. Here they serve various functions either alone or in combination with solid insulating materials, such as to insulate components from each other or the ground, to impart cooling action, to fill up voids in composite dielectrics, to impregnate thin sheet insulation, to control and provide high capacitance in power capacitors, for arc extinction in high voltage switches/circuit breakers and also to act as lubricants in tap changers and circulating pumps.
