On-load tap-changer transformers adopt vacuum arc-extinguishing on-load tap changers. Their windings are made of high-permeability silicon steel sheets. They are equipped with tie-rod rigid clamps and fully sealed oil tanks, and their insulation systems use oil-paper composite structures. This type of transformer supports on-load voltage regulation with high voltage regulation accuracy and is suitable for frequent operations. It has strong short-circuit capacity and is widely used in power grid hubs, new energy power stations and precision manufacturing industries to ensure dynamic voltage stability.
