220kV Oil-immersed Three-phase Three-winding On-load Voltage Regulating Power Transformer

The 220kV oil-immersed three-phase three-winding on-load voltage regulating power transformer is designed for efficient and flexible voltage control in medium-to-high voltage power transmission systems. It integrates advanced on-load tap changer (OLTC) technology, enabling real-time voltage adjustment without interrupting power supply, ensuring stable grid operation under varying load conditions. The transformer adopts high-quality grain-oriented silicon steel cores and optimized winding structures to reduce no-load and load losses, improve efficiency, and minimize operating noise. Its oil-immersed cooling system provides excellent heat dissipation, enhancing thermal stability and extending service life. With strong short-circuit withstand capability, superior insulation performance, and low partial discharge levels, the unit ensures safe and reliable operation in demanding environments. It is widely applied in substations, industrial power systems, and regional grid interconnections. Customizable designs are available to meet different technical standards, environmental conditions, and utility requirements, making it a dependable solution for modern power infrastructure.