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

The procedure for transformer oil testing typically involves sampling the oil, followed by laboratory analysis. Key parameters evaluated include dielectric strength, moisture content, acidity, dissolved gas analysis (DGA), and furan analysis. Dielectric strength assesses insulation capability, while moisture content indicates potential degradation. Acidity measures oil degradation, and DGA identifies fault gases. Furan analysis evaluates paper insulation condition. These tests help ensure the transformer’s reliability and longevity.