INTERLABORATORY COMPARISONS OF THE CALIBRATION RESULTS OF ENERGY METERS

Oleh Velychko; Yulia Kulish; Boris Gendelman

doi:10.51466/JEEIT249121405v

Oleh Velychko State Enterprise “All-Ukrainian State Research and Production Center for Standardization, Metrology, Certification and Consumers Rights Protection”, 4 Metrologichna Str., 03143 Kyiv, Ukraine
Yulia Kulish State Enterprise “All-Ukrainian State Research and Production Center for Standardization, Metrology, Certification and Consumers Rights Protection”, 4 Metrologichna Str., 03143 Kyiv, Ukraine
Boris Gendelman SATEC Calibration Lab., 25, Zeev Lev Str., 9145001, Jerusalem, Israel *velychko@hotmail.com

DOI: https://doi.org/10.51466/JEEIT249121405v

Keywords: calibration, energy meter, interlaboratory comparison, uncertainty

Abstract

The article is devoted to the analysis of the results of the interlaboratory comparison (ILC) of the electric energy meter, which were carried out in 2024. ILC results of calibration of the energy meter at the points of alternating voltage 230 V, currents from 0.05 A to 10 A, power factors from ±1.0 to ±0.5 at a frequency of 50 Hz are presented. The deviations of the results obtained by each laboratory were determined, and the consistency of the obtained results was assessed, taking into account the uncertainty of the measurements using the criterion of functioning statistics. In general, laboratories have received satisfactory accuracy and there is good agreement between participants for this quantity. Laboratories meet the established requirements and confirms their qualification (technical competence) during the calibration in accordance with the requirements of the standard ISO/IEC 17025. It is expected thatthis ILC will be able to provide support for participants’ calibration capabilities.