In the datasheet, I have trouble with some parameters

1. Regarding RMS currents i.e., AIRMS, FIRMS & HXIRMS registers.

AIRMS register contains total RMS current in phase A.

FIRMS register contains Fundamental component current of a particular phase.

HXIRMS register contains particular phase x-harmonic RMS current.

My doubt is

(a) The RMS current value in AIRMS register contains both fundamental & harmonic components or not.

(b) How to convert all these 3 registers value in to Real world values.

I know the procedure i.e., by applying a known current value we can calculate the amps/LSB. but the registers HXIRMS & AIRMS contains Harmonic components. so how to convert these values in to real world values

Hi Kumar,

The AIRMS includes fundamental and harmonics upto ADC bandwidth.

If the input signal contains harmonics, the harmonic engine extracts the fundamental and harmonics from the signal and the value is available in corresponding registers. The amps/LSB factor is same for AIRMS AFIRMS And HXIRMS. So multiplying the registers by Amps/LSB will give total RMS, Fundamental RMS and harmonic RMS respectively.