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

The 220kV oil-immersed three-phase three-winding unexcited voltage regulating power transformer is designed for reliable operation in medium-to-high voltage power transmission and distribution systems. It adopts a high-quality grain-oriented silicon steel core and optimized three-winding structure to achieve efficient voltage conversion, flexible load distribution, and improved system stability. The oil-immersed cooling method ensures excellent heat dissipation, low operating temperature rise, and long-term reliable performance under continuous heavy load conditions.

The transformer features strong short-circuit withstand capability, low no-load loss, and superior insulation strength, ensuring safe and stable operation in demanding environments. Its unexcited tap-changing design provides dependable voltage adjustment while maintaining high operational efficiency and reduced maintenance requirements.

Widely used in substations, industrial power networks, and grid interconnection projects, this transformer is engineered for durability and long service life. It can also be customized to meet specific technical standards and project requirements for modern power systems.