This Technical Specification covers the activities necessary to ensure the satisfactory rewinding and refurbishment of all types and sizes of rotating electrical machines covered by IEC 60034, including: - determining cause of failure, where necessary; - determining the extent of refurbishment, as applicable; - defining revised performance, operating and ambient conditions, if required; - reviewing the original design, and undertaking redesign, if required; - proving the quality and performance of the refurbished machine. This specification does not supersede the requirements prescribed in IEC 60079-19 or elsewhere concerning the repair and overhaul for mac