1. CIGRE Study Committee SC11, EG11.02, Hydrogenerator failures – Results of the survey.
2. Insulation failure mechanisms of power generators;Bruetsch;IEEE Electr Insul Mag,2008
3. Survey of hydro generator failures;Araco;Electra,2009
4. IEEE recommended practice for testing insulation resistance of rotating machinery, IEEE Std 43-2000.
5. IEEE recommended practice for measurement of power factor tip-up of electric machinery stator coil insulation, IEEE Std 286-2000.