What is the gassing tendency of transformer oil in power transformers?

The gassing tendency of transformer oil in power transformers refers to the oil’s propensity to produce gases when subjected to electrical stress or thermal degradation. This phenomenon is critical as it can indicate insulation breakdown or overheating. The presence of gases, such as hydrogen, can lead to pressure buildup and potential failure of the transformer. Monitoring the gassing tendency is essential for maintaining transformer health and preventing catastrophic failures.