Hello,

I would like to help, please

1. Harmonics calculation, Monitored output registers used when one of phases A, B, C is analyzed output registers

VTHD = % THDV ?

ITHD = % ITHDV ?

2. Can ADE7880 IC to show Harmonics Order 1-50 ?

3. What is algorithm Harmonics calculation for ADE7880 ? Is FFT ?

Best,Regards

Hi autchar

Please find below answers to your questions:

1. The THD values are ratios and not percentages.

2. One can only measure 3 harmonics of a particular phase at a time( with a settling time of 750 ms). For multiple phases( A,B and C) and harmonics( till 63rd harmonic), one will have to collect data in sets of 3.

3. The Harmonic engine uses an internal proprietary algorithm to compute the data.

Regards

hmani