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

The procedure for transformer oil tests typically includes sampling, laboratory analysis, and evaluation of key parameters. Common tests involve measuring dielectric strength, moisture content, acidity, dissolved gas analysis (DGA), and furan analysis. Dielectric strength assesses insulation capability, while moisture content indicates potential degradation. Acidity tests evaluate oil degradation, DGA identifies potential faults, and furan analysis assesses paper insulation condition. Regular testing ensures transformer reliability and longevity.