I used ADE 9000 for energy measurement application and i use CF pulse to accuracy testing of the energy.
I use CF1 to pulse Active Energy and target accuracy is +/- 0.5%
Nominal value for calibrate the parameter :
V = 230 V
I = 5 Ampere
PF = 1
Pulse Constant : 1000 pulse/kWhr
CT Ratio : 2500 : 1
CT burden resistor : 5.1 ohm
R1 : 1000 kOhm, R2 : 1 kOhm
WATTHR = VARTHR = VATHR = 0x100000
I get the CF1DEN value 0x1219.
I have calibrated Voltage Gain, Current Gain, and Phase as shown in the ADE 9000 user guide.
Below the result after test in the calibration machine:
Ib = 5A, L = inductive load, C capacitive
Based on the value above with various load type and PF value, at nominal current (Ib) the error show around - 0.2%, and in the capacitive load its reach -0.6%/-0.7% (out of accuracy).
- How i can get improve the accuracy on Ib (5A) will became less than +/- 0.1% on all test range?
- What need to be improve to handle capacitive load with various PF value in the accuracy range (less than +/- 0.5%)?
Thanks for your kind feedback.