What is the chemical characterization of transformer mineral-insulating oils?

The chemical characterization of transformer mineral-insulating oils involves analyzing their hydrocarbon composition, which primarily consists of alkanes, cycloalkanes, and aromatic hydrocarbons. These oils are derived from refining crude oil and are characterized by their low volatility, high flash points, and excellent dielectric properties. Additionally, the presence of additives such as antioxidants and corrosion inhibitors enhances their performance and stability in power transformers, ensuring effective insulation and heat dissipation.