I am developing an energy meter using the ADE7878.
I have used the evaluation board as the basis for the circuit design and I am supplying power 3.3Vdc to the ADE7878 through an AC-DC converter module. I am taking the AC supply for the module from the VA and VN inputs for the voltage measurements.
I have some reservations about how how I have connected up the neutral, ground plane and 0Vdc. At the moment I have connected both 0Vdc and Neutral to the ground plane. See the circuit diagram below for the Neutral-Ground-0Vdc setup.
I am just wondering if this setup is ok and if there are any comments about it?
Thanks in advance.
Let me direct the discussion to https://ez.analog.com/message/213866#213866 about your conducted emissions question.
I have a similar question but for the ADE7953, can I tied all ground, neutral and 0Vdc without use any filter?. I am using Current Transformer not shunt.