Conductor insulation requirements for large high voltage power transformers

摘要

The heart of every transformer is the individual winding turn which can be composed of numerous parallel conductors. For various reasons, these conductors must be insulated from each other. Within the same turn, the insulation on individual conductors reduces circulating currents and keeps losses to a reasonable value. Between turns, the insulation allows the transformer action to take place and the windings to function as planned.