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

The transformer oil testing procedure involves several key steps: sampling, laboratory analysis, and evaluation of results. Initially, a representative oil sample is collected. Common tests include Dissolved Gas Analysis (DGA) for fault detection, moisture content measurement, acidity testing, and dielectric strength assessment. These parameters evaluate the oil’s insulation properties, chemical stability, and overall condition, ensuring the transformer operates efficiently and safely. Regular testing helps in predictive maintenance and prolongs transformer life.