Voltage reading in delta 3-wire configuration for ADE7880

Dear dsedano,

I see that you are using the ADE7880  for a 3 wire delta configuration. You are correct that the CONSEL Bits should be set to 01. It is also correct that Phase B should be set as the neutral alongside with its connection to VN. This setting will affect the way you read your measurements.

You can see that the measurement of pb is zero, since you use it as neutral. When you read it in your registers you might think that there is an error because the powers consumed by its phase is not the same as the power measured on that phase, it is because of this.

This is how the Delta Configuration works and this also affects the reading for your angles,

You will notice that VA/B is with a 60 deg angle to VC and IA is with 30 deg phase even though you put a power factor of 1. This is the effect of the delta configuration.

But in totality, you are going to read the Total Energy exactly, so you should not be doing it wrong.

I hope you can measure your values now.

Regards,