I have 3 x AT 50 B10 current transformers (CT), one on each phase (240V RMS), Vp, going into a CNC machine.
The output of each is 0-10V where each volt corresponds to 5A RMS passing through the CT.
I want to calculate power over a given time period, t0 to tn, for each phase (P1, P2, P3) & for all phases added together (PT).
My thoughts on how I do this,
Covert my acquired voltage to current, Ia = Va x 5
Sum Vp x Ia over t0 to tn for each phase
Then PT = P1 + P2 + P3
This is RMS power?
Is it that simple? Am I missing something here? Have I actually calculated electrical energy use here?