What is the process for power transformer oil treatment?

The process for power transformer oil treatment involves several steps to ensure the oil’s quality and performance. Initially, the oil is filtered to remove particulate contaminants. Next, it undergoes vacuum dehydration to eliminate moisture, which is crucial for maintaining dielectric strength. Additionally, chemical treatment may be applied to neutralize acids and remove dissolved gases. Finally, the treated oil is tested for parameters such as dielectric strength and water content before being reintroduced into the transformer.