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NEMA C12.24 TR-2022

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

Establishes names and mathematical definitions for the volt-ampere (VA), volt-ampere hours (Vah), volt-ampere reactive (VAR) and volt-ampere reactive hours (VARh), formulae used by polyphase electricity meters. The mathematical definitions assume static waveforms.

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NEMA: National Electrical Manufacturers Association [nema]

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