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

The procedure for transformer oil testing involves sampling the oil, followed by laboratory analysis to evaluate key parameters. Commonly assessed parameters include dielectric strength, moisture content, acidity, dissolved gas analysis (DGA), and furan analysis. Dielectric strength measures the oil’s insulating capability, while moisture content indicates potential degradation. Acidity assesses oil degradation, DGA identifies fault gases, and furan analysis evaluates paper insulation condition. Regular testing ensures transformer reliability and longevity.