What is the procedure for type of transformer oil test and what parameters are evaluated?

The procedure for transformer oil testing typically involves sampling the oil and conducting several key tests. Common tests include Dissolved Gas Analysis (DGA) to evaluate gas levels indicating insulation breakdown, moisture content measurement to assess water presence, and dielectric strength testing to determine the oil’s insulating capability. Additional tests may include acidity, furan analysis for paper insulation condition, and PCB testing for environmental compliance. Each parameter helps ensure the transformer’s operational reliability and longevity.