What is the complete procedure for transformer oil testing?

The complete procedure for transformer oil testing involves several key steps:

1. Sample Collection: Obtain oil samples following safety protocols.
2. Visual Inspection: Check for clarity, color, and presence of particulates.
3. Dielectric Strength Test: Measure the oil’s insulating properties using a dielectric strength tester.
4. Dissolved Gas Analysis (DGA): Analyze gases dissolved in the oil to detect potential faults.
5. Furan Analysis: Assess paper insulation condition through furan content measurement.
6. Water Content Test: Determine moisture levels using Karl Fischer titration.
7. Acidity and PCB Testing: Evaluate acidity and check for polychlorinated biphenyls (PCBs).

Each step ensures the transformer operates efficiently and safely.