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ADE7878 circuit for 3-wire delta and 4-wire wye

Question asked by edmont on Jan 22, 2016
Latest reply on Jan 27, 2016 by dlath

So I have a circuit what is able to measure correctly Irms, Vrms, W, VA, Wh, VAh and power factor in a 4-wire wye load (CONSEL = 00). In that configuration the neutral wire acts as ground of the circuit.

 

I want the same circuit to be able to measure 3-wire delta loads (CONSEL = 01). My approach is to connect Vb with N so that Vb is now the ground for the circuit. In this case I have correct measurements for V12 and V23, but V31 is 0. Is there any way that I can get the V31 value?

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