What is the role of transformer oil in a 225 kVA oil-filled transformer?

The role of transformer oil in a 225 kVA oil-filled transformer is to provide electrical insulation and cooling. The oil acts as an insulating medium, preventing electrical breakdown between conductive parts, while also dissipating heat generated during operation. This thermal management is crucial for maintaining optimal performance and extending the lifespan of the transformer. Additionally, transformer oil helps to prevent oxidation and moisture ingress, ensuring reliable operation.