What are the technical aspects of transformer oil types?

The technical aspects of transformer oil types include their chemical composition, dielectric strength, thermal conductivity, and viscosity. Mineral oils, commonly used, provide good insulation and cooling properties, while synthetic oils offer higher thermal stability and lower flammability. Biodegradable oils are gaining traction for environmental reasons. Each type must meet specific standards, such as ASTM D3487, to ensure optimal performance and safety in power transformers.