What is the procedure for types of transformer oil testing and what parameters are evaluated?

The procedure for transformer oil testing involves several key steps: sampling, laboratory analysis, and reporting. Common tests include Dissolved Gas Analysis (DGA) to detect fault gases, moisture content measurement, and dielectric strength testing to assess insulation properties. Other parameters evaluated are acidity, interfacial tension, and furan analysis for paper insulation condition. Each test provides critical insights into the oil’s condition and the transformer’s operational health, ensuring reliability and safety.