Main Results of GULFMET Supplementary Comparison for AC Active and Reactive Energy

Abstract

Main results participating laboratories which are measuring the same electric active and reactive energy travelling standard of low-frequency 50/53 Hz energy in a framework of GULFMET.EM-S5 supplementary comparison of energy are presented. The paper describes some problems concerning the evaluation of travelling standard drift effect and its further influence on evaluation reference value during a comparison. Degrees of equivalence and expanded uncertainties of participants are set. Also $E_{n}$ number was calculated for each participant GULFMET.EM-S5 supplementary comparison of energy with the aim of determining data consistency.