How does transformer oil density affect performance?

Transformer oil density significantly affects performance by influencing thermal conductivity, insulation properties, and the ability to dissipate heat. Higher density oils typically provide better insulation and heat transfer, enhancing the transformer’s efficiency and lifespan. Conversely, lower density oils may lead to inadequate cooling and increased risk of overheating, potentially compromising the transformer’s reliability. Therefore, selecting the appropriate oil density is crucial for optimal transformer operation and longevity.