What role does oil play in transformer cooling and insulation?

Oil in transformers serves two critical functions: cooling and insulation. As a coolant, it absorbs heat generated during operation, maintaining optimal temperature levels and preventing overheating. Additionally, transformer oil acts as an insulator, providing electrical insulation between live components and the tank, thus preventing short circuits. The oil’s properties ensure efficient thermal management and electrical safety, which are essential for the reliable operation of power transformers.