A new asynchronous, 3-phase/4-channel Power Analyzer for high precision analysis of AC voltage, AC current and power. Advanced signal processing algorithms provide
precise measurements of single period events (i.e. single period of a wave form) for sinusoidal, non-sinusoidal and quasi-stationary signals. The uncertainty for AC current and
power measurements of a single period event are <75 µA/A and <200 µW/W. The uncertainty of the phase measurement between two single period events (i.e. voltage-to-voltage,
current-to-current, and voltage-to-current) is <50 µrad/rad. Uncertainties are materially reduced with averaging over multiple periods. This presentation describes the
architecture and algorithms.