Oil Immersed Transformer for Substation uses insulating oil for both cooling and dielectric protection, making it suitable for medium voltage and higher-capacity substation applications. It is widely used in utility grids, industrial substations, renewable energy plants, mining power systems, and regional distribution networks. Oil Immersed Transformer for Substation can be customized with mineral oil or ester fluid, ONAN cooling, tap changer, pressure relief device, oil level indicator, temperature monitoring, bushings, and protection accessories.