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NEMA C12.24 TR-2011

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

This technical report 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.

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NEMA: National Electrical Manufacturers Association [nema]
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