NEMA Technical Report Definitions for Calculations of VA, VAh, VAR, and VARh for Poly-Phase Electricity Meters

Establishes names and mathematical definitions for the Volt-Ampere (VA), Volt-Ampere hours (VAh), Volt-Amperes Reactive (VAR), and Volt-Ampere Reactive hours (VARh) formulae used by poly-phase electricity meters. The mathematical definitions assume static waveforms.