What is the role of power line transformer oil in power transformers?

The role of power line transformer oil in power transformers is to provide electrical insulation and cooling. Transformer oil prevents electrical arcing and breakdown by maintaining high dielectric strength. Additionally, it dissipates heat generated during operation, ensuring optimal performance and longevity of the transformer. The oil also serves as a barrier against moisture and contaminants, further enhancing the reliability and efficiency of power transformers.