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For more than 50 years, Preformed Windings has been trusted by global OEMs and service providers for the manufacture of high-quality high-voltage diamond coils.
What is less widely known is that the same expertise, materials, and advanced insulation systems used in our diamond coils are applied to the manufacture of our High Voltage (HV) Bars.
Our HV bars are designed for high-performance motors and generators operating in demanding environments, including nuclear, hydro, oil & gas, and industrial power generation.
By combining precision manufacturing, advanced insulation technology, and ultra-low partial discharge performance, our HV bars deliver extended operational life, enhanced reliability, and consistent electrical performance.
Preformed Windings manufactures high-voltage bars using the same proven insulation systems trusted in our HV diamond coils.
Our ultra-low partial discharge (PD) insulation technology is engineered to:
The same insulation performance customers rely on in our coils is now available in our HV bar solutions.
Advanced Insulation Systems
Industry-proven insulation materials designed for high-voltage applications and extended service life.
Ultra-Low Partial Discharge Technology
Reduces electrical stress on insulation systems, improving reliability and longevity.
Precision Manufacturing
Engineered with tight tolerances to ensure optimal electrical and mechanical performance.
OEM and Custom Design Capability
Manufactured to meet specific motor and generator design requirements.
High Voltage Performance
Suitable for demanding high-voltage motor and generator applications across multiple industries.
Robust Mechanical Strength
Designed to withstand thermal, mechanical, and electrical stresses experienced in high-performance machines.
Preformed Windings HV bars are used in high-performance motors and generators across critical industries, including:
Our bars are trusted by OEMs, service providers, and repair specialists worldwide.
With over five decades of experience in high-voltage winding manufacture, Preformed Windings has built a reputation for precision engineering, insulation excellence, and dependable performance.
Our HV bars are manufactured using the same advanced processes and quality standards that have made our diamond coils a trusted solution across the global electro-mechanical industry.
At Preformed Windings, our support extends beyond manufacturing. We provide comprehensive technical services to support the full lifecycle of high-voltage motors and generators.
24/7 Technical Support
Our engineering specialists provide round-the-clock technical support, helping customers respond quickly to operational challenges and minimise downtime.
Diagnostics, Inspection & Testing
We offer advanced diagnostics, inspection, and electrical testing services to assess the condition of high-voltage winding systems and identify potential issues before they impact performance.
Life Extension Solutions
Through detailed analysis and inspection, we provide life extension solutions designed to maximise the operational lifespan of critical equipment, improving reliability and reducing long-term maintenance costs.
These services ensure our customers benefit from expert guidance, proactive maintenance strategies, and reliable operational performance throughout the life of their equipment.
Whether supporting new machine builds, upgrades, or maintenance programmes, our HV bar solutions deliver reliability, performance, and long-term operational confidence.
To discuss your application requirements or request technical information, contact our engineering team today.
Disclaimer
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