Abstract
The influence of harmonics on commonly used three-phase watthour and kVA demand meters was studied using a computer-controlled three-phase test system capable of generating nonsinusoidal voltages and currents. A description of the three-phase test system and results of preliminary tests of several revenue meters are presented. The performance of the tested meters is compared with the response of time-division and thermal reference meters for different harmonic conditions, primarily field-recorded data. Errors up to 2% were observed during the testing of energy meters and up to 35% for kVA demand meters.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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