UL offers high-voltage (HV) electrical insulation system evaluations that are specifically designed to address the performance of HV form-wound rotating machinery and HV power and distribution transformers.  The tests are performed on actual form-wound coils or transformer coils to globally recognized IEEE or IEC Standard test methods and a thermal class rating certification is issued.

UL’s high-voltage electrical insulation system services let specifiers and end-users know that the insulation system has been tested and certified to meet the requirements of the globally accepted test methods.  Contact UL at PMSales@ul.com to learn more or reference the high-voltage electrical insulation systems sell sheet.