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Shermco Industries, a leading provider of rotating machinery testing, repairing and remanufacturing as well as power systems maintenance and electrical damage restoration services, has created two insulation systems designed especially for use in wind turbine generators.
The insulation system for wind turbine generators under 1000kW is constructed to achieve excellent physical, electrical and thermal endurance properties with additional mechanical support for rotating elements to combat vibration fatigue. This system conforms to UL 1446 requirements for Class H insulation systems below 1000 VAC and will be certified to the proposed IEEE 1798 for VFD machines once the final version of the standard is adopted.
For larger wind turbine generators, Shermco has created an insulation system with stator and rotor windings designed to be more robust than most OEM designs. The low voltage stator windings conform to UL 1446 requirements, and the HV rotor insulation systems are designed to surpass the new stringent IEEE 1776 requirements. Dissipation factor, tip-ups and voltage endurance of this system far exceeds normal design parameters for 6900 VAC Class F machines.
Shermco Industries, who developed these systems with the assistance of DuPont Advanced Fibers Systems and other major materials suppliers, will utilize these designs for remanufacturing and upgrading wind turbine generators. Kevin Alewine, director of Shermco’s Renewable Energy Services team, says the wind industry will greatly benefit from the new products.
“The Shermco wind turbine generator insulation systems will be greatly appreciated by those in the industry,” said Alewine. “These designs will allow companies to reliably and efficiently generate electric power while reducing greenhouse gasses.”
About Shermco
Shermco Industries (shermco.com) is a provider of safe, reliable testing, repair, professional training, maintenance and analysis of rotating machines and electrical power distribution systems and related equipment for the light, medium, and heavy industrial base nationwide. Founded in 1974 in Dallas, the company is comprised of two strategic business units; Machine Services Division and an Engineering Services Division. With a corporate location in Irving, Texas, a sales office in Brussels and service centers in Austin and Tulsa, Shermco Industries has over 250 full-time employees and exceeds $65 million in annual revenues. The company is a member in good standing with the American Wind Energy Association, European Wind Energy Association, Global Wind Energy Council, Electrical Apparatus Service Association and the International Electrical Testing Association.
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