Approval of wind turbines in the USA and Canada

The USA and Canada still have no specific industrial standards in place for large-scale wind turbines.

These systems are classified as industrial machinery and require approval under the National Electrical Code and further UL standards in the USA or the Canadian Electrical Code and further CSA standards in Canada.

“On this basis, certification of wind turbines is rather inflexible and does not meet the specific requirements demanded of these systems”, comments Frank Etz, project manager at T