What is the moisture content in transformer oil?

The moisture content in transformer oil is a critical parameter that affects the insulation properties and overall performance of power transformers. Typically, the acceptable moisture content in transformer oil should be below 20 parts per million (ppm). Elevated moisture levels can lead to reduced dielectric strength, increased risk of electrical breakdown, and accelerated aging of the insulation system, ultimately compromising the reliability of the transformer. Regular monitoring is essential to maintain optimal moisture levels.