Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines (IEC 61400-21:2008) (english version)
Electromagnetic compatibility (EMC) - Part 4-7: Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto— 36 стр.
Electromagnetic compatibility (EMC). Testing and measurement techniques. General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto— 40 стр.