we have a problem with ADE7816, we started the design of a new device with multi-input CT, we bought the evaluation board and connected a inductive load at channel A, and we used in parallel a analyzed power to calibrate it....these are the results:
1) we got differents power factors:
ADE7816 (channel A) : 0.985
Analyzed power(calibrated): 0.850
2) we got this angle by two ways, and get the same result:
ADE7816 method (1) --> cos(arctg(AVARHR / AWATTHR))=0.985
method (2) --> directly reading ANGLE0 --> cos(ANGLE0*(50-360)/25600)=0.995
We don't know what happend but we get different power factor when use reactive load (0.985 =/ 0.85),
it's a big different between these values.
I think this driver (ADE7816) should work well, but we don't know what happend.
Thank you at all.