I am using ADE9000 IC.
I am calibrating it using ADE9000 _Calibration_Tool_Rev0 provided by AD. I am calibrating it by using following gain registers:-
AIGAIN, BIGAIN, CIGAIN, AVGAIN, BVGAIN, CVGAIN
For Input to the IC I am using Relay Test Kit (Ponovo make).
After calibration here are my following observations:-
1. For lower values of current and voltage, I am not getting Class 2 accuracy at Frequency 50 Hz
2. When I change the frequency up to 49.5/50.5 Hz, %error in the values I am getting about 1-2%
3. Also, i want to calibrate phase angles, but the formulas or method in the calibration sheet and data sheet(UG-1098) both are different.
4. I want to know the calibration method of Waveform buffer values, i didn't found any formulae to convert the counts of WFB values into actual values