A VA-meter-error analyzer

The authors describe a VA-meter-error analyzer which simulates the correct and simplified operating principles of commonly used VA meters. When used in the field, it displays directly the errors that VA meters operating on different principles would experience for the waveform conditions at the site. In sinusoidal or near sinusoidal conditions, the different operating principles result in identical readings. The readings diverge with increasing distortion. Analysis of the performance of the analyzer and interpretation of its results for simulated field conditions are discussed