Good Practice Guide to Maintain Motor Efficiency (UK Version)
Some of the included procedures derive directly from the 2019 and 2003 rewind studies by EASA and AEMT of the impact of repair/rewinding on motor efficiency. Others are based on the findings of an earlier AEMT study  of small/ medium size three-phase induction motors and well-established industry good practices.
The procedures in this guide cover all three-phase, random-wound induction motors. Much of the guide also applies to form-wound stators of similar sizes