Comparison and analysis of current transformer measurement values
The current transformer used for trade settlement is a compulsory measuring instrument.In or-der to ensure the orderly progress of the calibration work for these transformers and the accurate and standardized values of the standard instruments,the Inner Mongolia Autonomous Region Market Supervi-sion Bureau organized a comparison of current transformer values within the region.Nineteen laboratories participated in the experiment,all of which are legally established metrological technical institutions.The comparison was divided into two groups,employing a loop-type comparison method.The calculation of the reference values was determined using the weighted average method.The normalized deviations of each reference laboratory were less than 1,and the comparison results were deemed satisfactory.