What is the process for transformer oil sample analysis in power transformers?

The process for transformer oil sample analysis in power transformers involves several key steps. First, a representative oil sample is collected from the transformer, ensuring minimal contamination. The sample is then subjected to various tests, including dielectric strength, moisture content, and dissolved gas analysis (DGA). These tests help assess the oil’s condition and detect potential issues such as insulation degradation or overheating, providing critical insights into the transformer’s health and performance.