ADE7880
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The ADE7880 is high accuracy, 3-phase electrical energy measurement IC with serial interfaces and three flexible pulse outputs. The ADE7880 device incorporates...
Datasheet
ADE7880 on Analog.com
Hi,
I'm testing ADE7880 EVK for my 3 phase power meter project.
I tested with default configuration of EVK for 3 Phase, 4 Wire before.
My 3 Phase Voltage:
+ Phase Voltage (Va-Vn): 220V
+ Phase to Phase Voltage (Va-Vb): 380V
If I modify EVK to work with 3 Phase, 3 Wire system (instead of 3 Phase, 4 Wire),
Do I need I modify R26 (Rhigh = 1M Ohm) of input voltage divider to avoid saturation of ADE7880 ADC (maximum is 500mV peak).

Yes, I would change the resister divider.
Dave