How is transformer oil analysis performed and what information does it provide?

Transformer oil analysis is performed through various tests, including dissolved gas analysis (DGA), moisture content measurement, and furan analysis. DGA identifies gases produced by insulation breakdown, indicating potential faults. Moisture content assesses insulation integrity, while furan analysis evaluates paper insulation degradation. Together, these tests provide critical insights into the transformer’s health, enabling predictive maintenance and enhancing operational reliability. Regular analysis helps prevent failures and extend the transformer’s lifespan.