AnsweredAssumed Answered

ADE7878  VGAIN and IGAIN correct Register value

Question asked by DavidX on Mar 20, 2013
Latest reply on Jul 1, 2013 by DavidX

Hi, I am developing an energy meter with the ADE7878.

 

V Fullscale = 501 V

V Fullscale rms = 354 V

I Fullscale = 49 A

I Fullscale rms = 34.6 A

 

VLEVEL = VFS/VN x 491520

501 / 230V x 491520 = 1070658

VLEVEL = 1070658

 

Application Note AN1076 Page 6:

 

Vrms ref = VN/VFS x 4,191,910

Vrms ref = 230V / 354V x 4,191,910 = 2723557

 

V(I)GAIN = RMSref / RMS -1

2,723,557 / 2,723,540 -1 = 0.000006242

 

What is the correct Hex value to set to VGAIN?

Outcomes