Preformed Windings Limited

Preformed Windings is a high-quality manufacturer of high-voltage diamond coils in the global service market. We have become the largest independent supplier of diamond coils in the hydro industry, whilst also serving many other industries with high-quality applications, such as nuclear power and industrial. Our coils boast low partial discharge levels, optimal tan delta, reduced maintenance requirements, and improved efficiency, ensuring optimal performance for our valued partners. 

As an independent manufacturer, Preformed Windings collaborates with leading material suppliers, associations, service companies, and end users of high voltage motors and generators. We are members of the AEMT, IHA, NHA, and EASA. With innovation at the heart of everything we do, we invest extensively in research and development to bring cutting-edge technology to the rotating electrical equipment industry. What really sets the business apart is the desire to collaborate and share knowledge, make regular technical presentations at industry events, share knowledge in online seminars, and contribute to associations, all the while forming long-term partnerships with service organisations and end users based on trust and transparency.

We are ISO 9001, 14001 accredited, as well as having staff members who have been announced as ESG champions by the Natural Resources Forum. We sponsor the diversity in engineering award at the AEMT awards, as well as additional industry events such as ESG week. Additionally, we hire apprentices and invest significantly in staff upskilling and wellbeing.

We are obsessed with quality. Partnerships are at the heart of everything we do. Together, we are proud to deliver trusted and innovative Preformed Windings.