When a transformer's windings are encapsulated, the resin encapsulation performs which of the following functions?

The resin encapsulation of a transformer's windings serves multiple critical purposes, making it multifunctional. Specifically, it provides essential insulation, which helps prevent electrical shorts and ensures safe operation of the transformer by maintaining proper voltage levels between the windings and external components. Additionally, it offers protection against environmental factors, such as moisture, dust, and chemical contaminants that could otherwise lead to deterioration or failure of the windings.

The encapsulation also acts as structural support, enhancing the mechanical integrity of the transformer, which is vital for enduring the thermal and physical stresses that occur during operation. This combination of insulation, moisture prevention, and structural reinforcement is essential in improving the reliability and longevity of transformers. Thus, the encapsulation is not limited to any singular function but rather serves a comprehensive role in safeguarding the windings and enhancing the overall performance of the transformer.