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

The 220kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer is designed for reliable and efficient operation in medium-to-high voltage power transmission and distribution systems. It adopts high-quality grain-oriented silicon steel cores and advanced winding technology to achieve low no-load losses, reduced noise, and improved energy efficiency. The oil-immersed cooling system ensures excellent heat dissipation and stable performance under continuous heavy-load conditions. With a robust insulation structure and optimized electromagnetic design, the transformer offers strong short-circuit withstand capability, high mechanical strength, and superior dielectric performance.

It is widely used in substations, regional power grids, industrial facilities, and infrastructure projects requiring stable and efficient voltage regulation. The unexcited tap-changing system provides reliable voltage adjustment with simple operation and low maintenance requirements. Designed according to international standards, it ensures long service life, operational safety, and high reliability. Custom configurations are available to meet specific project and environmental requirements.