Hello,
for my final dissertation at university i am trying to design a 3-phase, 3-wire energy meter using ADE7932 and ADE7978.
I found many helpful documents like the application note AN-1333 and the design files from the EVAL-ADE7978, but there are questions remaining.
You can see in the figure that the basic structure is clear.I am going to take for the red resistors >1.5M Ohm and for the blue resistors 1k Ohm to measure 400V RMS.
Now both ADE7932 are floating on the specific phase potential. I couldn't find a direct answer if the ADE7932 intern Isolation can handle such big voltages.
Do i have to connect the green dots with the GND_ISO potential of each ADE in addition so the current and voltage measurement have a reference ?
thank you for helping me out.
