Transformer Oil Dehydration is the process of removing moisture from the insulating oil used in transformers. The presence of water reduces the oil's dielectric strength and accelerates the degradation of the transformer's internal insulation. The dehydration is typically performed using a vacuum purification machine, which heats the oil to vaporize the water and then uses a vacuum to extract the moisture, restoring the oil's insulating properties and extending the transformer's lifespan
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