What is the process for testing transformer oil in power transformers?

The process for testing transformer oil in power transformers involves several key steps. First, a sample of the transformer oil is collected under controlled conditions to prevent contamination. Then, laboratory tests are conducted to assess parameters such as dielectric strength, moisture content, acidity, and dissolved gas analysis (DGA). These tests help determine the oil’s insulation properties and overall condition, ensuring the reliability and safety of the power transformer.