Today's Transformer Insulation Systems

Insulation system integrity is probably the most important factor in satisfactory transformer performance; changes and improvements in transformer insulation systems take place continuously. Insulation systems are described, as they are currently constituted in oil immersed, askarel insulated, dry type, gas insulated, and encapsulated power transformers. Since transformer life is directly related to the insulation system and its time-temperature characteristics, the performance of the complete system, rather than that of individual components, is stressed.