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Regarding the Value of Pmax

Question asked by Dg@4 on Apr 13, 2018
Latest reply on Apr 30, 2018 by Gary.Kang.AnalogDevices

Hello 

I'm using the ADE7878A for Energy meter Implementation. As per datasheet, When voltage and current ADC both are at full scale and in-phase then instantaneous power computed, PMAX = 33,516,13

but when i apply full scale voltage and current i.e. when ADC of voltage and current produces 4,191,910 (RMS). then xWATT register produces a value of approx 2,049,322 Which is much less then PMAX

 

Why i'm getting such low value of xWATT? Is there is something that i'm considering wrong?

 

With regards 

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