This is the second lesson of the Insulating liquids test course titled Review of available conventional literature, guides, and standards for oil testing.
The session coves the importance of transformer oil testing, emphasizing the need for accurate judgment of test results. Key points include the necessity of oil with acceptable dielectric properties and the significance of dissolved gas analysis. The discussion highlights the evolution of oil standards, noting that 30% of transformer life cannot be determined from oil tests alone. The session also covered the differences between various oil standards, the impact of additives, and the importance of regular oil testing and treatment to prolong transformer life. Specific tests like breakdown voltage, electric dissipation factor, and oxidation stability were also discussed.
