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ADE7878/7880 How to choose filter inductor for Neutral connecting point

Question asked by panneerrajan on Sep 15, 2017
Latest reply on Oct 2, 2017 by aheredia

Hi,

We are using ADE7878 & 7880 for three phase static energy meter.

Three phase voltage and neutral input connected to three phase Isolation SMPS  and parallel take the wires to ADE input channels for measurements.

For ADE measurement neutral point required between toroidal cores filter choke? If required how to calculate and identify value?

Can we connect Neutral directly to SMPS output GND and CPU GND

Please suggest

 

Thank You

Rajan

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