CHARACTERIZATION OF MULTIFUNCTION METERS BASED ON INTEGRATED DEVICES IN THE PRESENCE OF HARMONIC DISTORTION

Antonio Cataliotti, Valentina Cosentino, Alessandro Lipari, Salvatore Nuccio

Abstract

This paper is focused on the problem of the metrological characterization of multifunction static meters based on integrated devices, in both reference and actual operating conditions. An experimental analysis is presented, which was performed on a commercial integrated device, in both sinusoidal and distorted conditions and both in the absence and in the presence of the measurement transducers. The experimental results show that the behaviour of the meters can be strongly influenced by the harmonics on voltage and current, depending on the operating principle of the meters, which is not always declared by the manufacturer. As regard this, the standards should define the metrological characteristics of the meters in the presence of harmonic distortion, as well as some proper accuracy tests for their verification. Moreover, the performance of the meters are strongly related to the employed voltage and current transducers, whose behaviour can be negatively affected by the presence of nonsinusoidal signals, because of their characteristics of frequency response.

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DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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