I need to read harmonics in our 3 phase 4 wire (using ADE7880). I do not have more knowledge in harmonics, fundamental and THD.My meter has the following configurations like 240, 5A,CT ratio 2:2500 and burden resistor 38 ohm's. I have used the following steps in my meter like voltage again, current gain , watt again and phase calibration.
Harmonic ADE configuration details:
b) HX =0x03
And we read ADE register every 500ms ones we switched to R,Y, B. We read at the time FVRMS to HXIHD (0xE880 to 0xE88F) 16 register.
1) Can you confirm my configuration is missing anything?
2) Can you help me to read the harmonics phase wise according to the above meter details and how to switch other phase?
3) Can you tell me what would be the expected value of the above meter configuration is it following value is expected value ?
My Harmonic reading value is without harmonic distortion
Voltage VRMS = 2538898* 0.0000922448=234.2V
Current IRMS= 4.972A, PF =0.484, Kwr =0.584 Kvar = 1.026 Kva = 1.177
Voltage constant: 0.0000922448
Current constant : 0.0000018952647098
HVA = 48d
HPF = 428691430d
HVAR = 42949672d
FVRMS= 2566113d * 0.0000922448 = 236.71 why FVRMS more than VRMS voltage?
FIRMS = 2645074d * 0.0000018952647098 = 5.01 ?
FWATT = 1569690d
How to convert registers contain Harmonic values in to real world values for HVRMS,HIRMS,HWATT,HVAR,FWATT,FVAR?