What are the technical considerations for purpose of oil in transformer?

The purpose of oil in transformers includes insulation, cooling, and arc suppression. Transformer oil provides electrical insulation between live components, preventing short circuits. It also dissipates heat generated during operation, maintaining optimal temperature levels. Additionally, the oil serves as a medium for suppressing electrical arcs during faults. Regular monitoring of oil quality, including dielectric strength and moisture content, is crucial for ensuring transformer reliability and performance.