Recently, the world’s largest 26MW-class offshore wind turbine was successfully connected to the grid in Dongying, Shandong Province. The project set new world records for both single-unit capacity and rotor diameter, marking a significant milestone and underscoring China’s leading position in the global offshore wind power high-end equipment manufacturing sector.

With each full rotation generating approximately 62 kWh of clean electricity, the turbine can achieve an annual power output of up to 100 million kWh under an average wind speed of 10 m/s. This is sufficient to meet the annual electricity demand of approximately 55,000 households, while reducing carbon dioxide emissions by more than 80,000 tons per year.

The 26MW offshore wind turbine was independently developed by Dongfang Electric Corporation, with the wind power converter jointly developed by Hopewind Electric and Dongfang Electric. As a key supplier of electrical components, Nader gained a deep understanding of the project’s technical requirements and, leveraging its strong R&D capabilities, extensive industry experience, advanced manufacturing processes, and technological expertise, provided comprehensive electrical system solutions tailored to the 26MW offshore wind turbine—from technical breakthroughs to on-site application.

To ensure the reliability of offshore wind electrical equipment under harsh operating conditions, Nader fully utilized its leading advantages in wind power technology and industry expertise, delivering highly customized solutions to meet customer needs. On the machine-side of the 26MW full-power converter, the NDW3-4000XU/K0 circuit breaker is applied to provide backup protection in the event of machine-side faults, offering highly reliable isolation protection against complex operating conditions such as high harmonics and elevated voltage levels.

On the grid-side, the NDW3-4000XU/KM2 circuit breaker is deployed. Featuring a new arc-extinguishing structure, it delivers a high-voltage breaking capacity of up to 60 kA. Its arc contact design significantly enhances resistance to electrical wear, achieving an electrical endurance of 1,500 operations, thereby ensuring safe, stable, and long-term operation of the wind turbine system.

The successful grid connection of the 26MW offshore wind turbine represents not only a technological breakthrough at the product level, but also demonstrates the collaborative innovation capabilities of China’s offshore wind power value chain. This achievement lays a solid foundation for the future large-scale development of deep-sea and far-offshore wind power projects. Looking ahead, Nader will continue to deepen cooperation with industry partners, driving technological innovation and industrial upgrading in the global offshore wind power sector.