Power transformer WindSTAR™

immersedfor offshore applicationsfor wind turbine

Hitachi Energy's WindSTAR™ liquid-filled transformers are ideal solutions for fixed and floating offshore wind applications. Their reliable, energy-efficient, and compact construction is well suited for installation in wind turbine towers or nacelles. As turbine size increases offshore (8 MW and above), turbine transformers must remain compact and lightweight with a minimal footprint while also meeting specific application needs, mechanical structural constraints, and costs. Based on the 36 kV class established solution for large offshore turbines, Hitachi Energy has developed a transformer that is able to step up the voltage at a world record of 66 kV and meet the most stringent electrical and mechanical requirements. With its WindSTAR™ transformer, Hitachi Energy is bringing a step change in the scale of power and voltage. Benefits • Vibration and short-circuit proof • Modular design for any customer request • Made for durability in salt mist environments • Environmentally friendly and fire-safe ester insulation liquid • High-temperature insulation material Why Hitachi Energy? • World’s leading manufacturer of 66 kV wind turbine transformers for the world’s most powerful offshore wind turbines • Best-in-class solution to withstand sudden variable loading and typical extreme environmental events of offshore conditions • Hitachi Energy turbine transformers are specially designed to meet the specific application needs • Hitachi Energy proven TrafoStar™ Design used for offshore wind turbines reaching 10 MW and above • Estimated installed base of more than 1,000 units worldwide