what are the tests performed on the transformer oil test?

Transformer oil testing is essential for assessing the health and performance of transformers. Key tests include the Dissolved Gas Analysis (DGA) to detect gases produced by insulation breakdown, moisture content measurement to evaluate insulation integrity, and dielectric strength tests to determine the oil’s ability to withstand electrical stress. Additionally, tests for acidity, interfacial tension, and PCB content help assess the oil’s condition and potential contaminants, ensuring reliable transformer operation.