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

The procedure for transformer oil sample testing involves collecting oil samples from the transformer, ensuring they are free from contamination. The samples are then analyzed in a laboratory for key parameters, including dielectric strength, moisture content, acidity, dissolved gas analysis (DGA), and furan analysis. These evaluations help assess the oil’s insulation properties, detect potential faults, and determine the overall health of the transformer, ensuring reliable operation and longevity.