AS/NZS 61000.4.7:2007
Electromagnetic compatibility (EMC) - Testing and measurement techniques - General guide on harmonics and interharmonics measurements and instrumentation, for power supply systems and equipment connected thereto
standard by Australian/New Zealand Standards, 01/01/2007
Applies to instrumentation intended for measuring spectral components in the frequency range up to 9 KHz which are superimposed of the fundamental of the power supply systems at 50 Hz