What is the experimental evaluation of water content in transformer oil?

The experimental evaluation of water content in transformer oil typically involves techniques such as Karl Fischer titration, which quantitatively measures moisture levels. This method is highly sensitive and can detect water content in parts per million. Additionally, infrared spectroscopy can be employed to analyze the absorption characteristics of water in the oil. Accurate assessment of water content is crucial, as excessive moisture can lead to reduced insulation performance and increased risk of transformer failure.