1. IEC/TS 60034-27-2:2012. Rotating electrical machines – Part 27-2: On-line partial discharge measurements on the stator winding insulation of rotating electrical machines

2. IEC 60794-4-10:2014 Optical fibre cables - Part 4-10: Family specification - Optical ground wires (OPGW) along electrical power lines

3. IEC 60903:2014 Live working - Electrical insulating gloves

4. IEEE Std C57.149-2012 IEEE Guide for the Application and Interpretation of Frequency Response Analysis for Oil-Immersed Transformers