what is transformer oil analysis?

Transformer oil analysis is a diagnostic process used to assess the condition and performance of transformer oil, which is crucial for insulating and cooling electrical transformers. This analysis involves testing the oil for various parameters, including moisture content, acidity, dissolved gases, and dielectric strength. By evaluating these factors, engineers can identify potential issues, such as insulation degradation or overheating, and take preventive measures to ensure the reliability and longevity of the transformer.