I have managed to measure RMS currents and voltages. Now, I need to calculate active power using the phase angle between current and voltages phases. I am able to read phase delay correctly between phase voltages, but not between phase currents or between phase voltages and currents. I need to calibrate the phases I believe. I also need to measure this phase angle so that I can figure out the power factor as well.
Currently, I am using a resistive load. I expect to have a zero degree phase. In the meantime I am looking at the phase between currents only and below is what I get:
Voltage Phase AC Delay (degrees): 217 ( I expect 240)
Voltage Phase BC Delay (degrees): 146 (I expect 120)
Voltage Phase AB Delay (degrees):62 (I expect 120)
I need to know how to conduct my phases currents/phase currents voltages calibration, please help!