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I am getting LL RMS voltage of 690v AC sine wave from a source. I want to convert it to read this as 690 volt analog signal i.e voltage drops would be read directly as 680...670 etc and not as a sine wave. also want to convert it to "per unit" i.e 690 = 1 and then use it for annunciation etc. What would be the calculation for this? this question may be a lame one but please bear with me.
Thanks in advance
Thanks in advance