what is inside a power line transformer?

A power line transformer typically contains several key components. The core, made of laminated silicon steel, facilitates magnetic flux. Copper or aluminum windings are used for primary and secondary circuits, enabling voltage transformation. Insulation materials, such as oil or resin, protect the windings and prevent electrical shorts. Additionally, cooling systems, like oil or air, help dissipate heat generated during operation. Overall, these components work together to efficiently convert voltage levels in electrical power systems.