Transformer Oil Dehydration is a critical maintenance process that removes moisture from a transformer's insulating oil. Over time, the oil can become contaminated with water through various means, such as leaks or condensation from temperature fluctuations. The presence of moisture is highly detrimental, as it significantly reduces the oil's dielectric strength—its ability to resist electrical breakdown. . This can lead to a risk of short circuits, accelerated aging of the transformer's paper insulation, and eventual equipment failure. The dehydration process typically involves using specialized equipment that heats the oil and then subjects it to a vacuum. This combination of heat and low pressure causes the water molecules to evaporate and be drawn out of the oil, restoring its insulating properties. By regularly performing this procedure, the lifespan of the transformer is extended, efficiency is improved, and the risk of costly repairs and power outages is minimized.