How do you test transformer oil?

To test transformer oil, you need to follow specific procedures that ensure the oil’s quality and performance. Start with a visual inspection to check for clarity and color. Next, perform dielectric strength testing to measure the oil’s insulation properties, typically using a dielectric strength tester. You should also conduct dissolved gas analysis (DGA) to identify potential faults by measuring gases present in the oil. Additionally, investigate moisture content using a moisture analyzer, which helps determine if the oil has absorbed water, affecting its performance. Lastly, test for acidity using a titration method to assess the oil’s oxidation levels, ensuring it’s within acceptable limits. Regular testing of transformer oil is crucial for maintaining efficiency and preventing failures.