What are the causes and effects of oil leakage in transformers?

The causes of oil leakage in transformers include seal failure, corrosion, mechanical damage, and improper maintenance. The effects of oil leakage in transformers can be significant, leading to reduced insulation effectiveness, increased risk of electrical faults, environmental contamination, and potential fire hazards. Additionally, oil leakage can result in costly repairs and prolonged downtime, impacting the reliability and efficiency of power transformer operations.