What is the role of oil-filled Cooper transformers in power transformer applications?

The role of oil-filled Cooper transformers in power transformer applications is to provide electrical insulation and cooling. The oil acts as a dielectric medium, preventing electrical breakdown, while also dissipating heat generated during operation. This enhances the efficiency and reliability of the transformer. Additionally, the oil-filled design helps in maintaining optimal operating temperatures, ensuring the longevity and performance of the power transformer in various applications.