Hydro Industry Solutions


Hydro Industry Solutions

Home –> Hydro Industry Solutions

coils and windings for the hydro industry

Throughout the last 50 years, Preformed Windings has served many clients across different industries with timely and quality solutions regarding their manufacturing. We offer top-quality coils and winding kits for businesses across the nuclear, industrial, transportation, and oil and gas industries. Preformed Windings is also proud to offer hydro industry solutions, contributing to some of the largest producers of renewable energy through our coils and windings, specially created for our clients’ personalized needs.

Preformed Windings Coils and Windings as Hydro Industry Solutions

Preformed Windings is a global leader in the supply of high-quality diamond coils as hydro industry solutions. We are so confident in our quality that we give our customers up to 10 years of warranty on our QualCoil coils.

Through great customization, allowing our customers to select their coil design, ranging from resin-rich or VPI insulation to various other specifics, we provide our hydro industry clients with solutions, specifically made for their manufacturing process. For every coil we produce, we also offer a winding kit (learn more for them here) That way, clients can receive ready-to-install products, without having to look for windings from other companies and can also be sure that the products fit and work perfectly together. We offer the ultimate hydro industry solutions as we provide customers with full control of the production process and the ability to follow the coil design, as well as any upgrades, to completely see and understand what product they’ll be receiving.

The hydro industry has many specific requirements for the products used in its work, and we at Preformed Windings can proudly claim to be able to meet them all, accordingly and in a timely manner. All clients from the sector who decide to contact us online today and get an offer for our hydro industry solutions will be taken care of by our team of highly professional specialists who will provide them with answers to their questions and eventually, coils and windings to serve them a worthwhile.

Hydro Industry Solutions: The Lowest Partial Discharge in the Industry

coils and windings for the hydro industry

Preformed Windings can offer the lowest partial discharge in the industry as one of the top hydro industry solutions. Our extensive experience passing thermal cycle and voltage endurance testing at independent test facilities in addition to our CAD design process and state-of-the-art manufacturing facilities and processes result in HV coils with the lowest Partial Discharge (Pd) in the industry. We have manufactured thousands of hydro coils for customers globally up to 18kV and 95MW.

Understanding Customer Needs

Supplying the largest OEM’s such as GE Renewables and Andritz Hydro as well as leading independent hydro repair facilities, see what our customers say:

“Preformed Windings have supplied many sets of high voltage coils to GE Renewables over the years. The quality of product and service is exceptional, and they are a trusted partner in our supply chain. We enjoy collaborative and cutting-edge research and development with Preformed Windings, which positions both organisations as thought leaders in the hydro industry. Their products offer significant benefits such as very low partial discharge and a long service life”

Global Commodity Leader, GE Renewables


“Preformed coils have successfully passed a rigorous set of qualification testing for Andritz Hydro. These tests included thermal cycling and voltage endurance to IEEE standards. We have had success using their coils. ”

Principal engineer, Andritz Hydro


“The QC process is very effective resulting in zero rejects during a recent 468 slot rewind. The communication, technical support and order updates are very beneficial and make doing business across time zones transparent.”

General Manager, Magnetech

Case Study

coils and windings for the hydro industry

Increasing the Capacity of a Coil
The challenge:

The end user wants to increase the capacity of their hydro generator from 12,000 kVA to 17,600 kVA whilst improving the operational condition of the machine, reducing maintenance requirements and extending the life of the asset.

The solution:

Preformed Windings and the service provider Sidewinders LLC worked closely together to redesign the coil utilising our 53 years of experience, our state of the art CAD system and the latest insulation technologies to design a coil suitable for the increased demand of the machine. The machine is being replaced with a superior quality that will ensure the lowest Partial Discharge levels and is the reason we offer 10 year warranties on our “QualCoil Life” coils

Positive feedback

Sidewinders LLC :  “Sidewinders LLC has used Preformed Windings for many years, and they are our preferred winding provider. Preformed Windings supplies exceptionally high quality HV diamond coils for hydrogenerators, along with 24/7 technical support. Preformed Windings’ engineers listen to each client’s needs and study the specific requirements of each project to provide precisely tailored solutions. Preformed Windings uses their position as trusted thought leaders in the industry to not simply manufacture replacement coils, but to substantially improve coil designs. Preformed Windings’ process and focus on continuous improvement results in superior machine performance that will endure for many years to come.”(Glen Peterkin, President and Technical Director, Sidewinders LLC).

Working with Sidewinders LLC

“It is a pleasure to work with industry experts such as Sidewinders LLC who offer exceptional levels of quality with a focus on customer service. The culture of integrity and honesty they maintain with suppliers and customers has afforded Sidewinders a fantastic reputation as a trusted, high-quality and value-leading partner in the aftermarket hydro repair industry around the world.”

For more information on hydro industry solutions please contact:

James Stevens, Global Sales and Marketing Director: +44 (0)7825 092563; jstevens@preformedwindings.com

Stuart Whitfield, Hydro Expert: +1 800 5331 798  / +44 (0)7500 868778; swhitfield@preformedwindings.com

Sign up here

Keep up to date with all the latest Preformed Windings news