The calibration capability of transformer calibrators is an important component of the transformer measurement system.By conducting metrological comparisons of transformer calibrators,the reliability of relevant metrological standards and the standardization of personnel operation in various measurement institutions can be effectively assessed.The article theoretically explores the comparison method of transformer calibrator calibration capability,and conducts in-depth analysis on the calculation of raw data and the evaluation of uncertainty,A reasonable analysis was conducted on the current situation and existing problems of standard devices in various reference laboratories through data.The comparison conclusion not only achieved qualified satisfaction but also took into account scientific and reasonable uncertainty evaluation.The comparison method discussed in the article has been well practiced in the measurement comparison of the transformer calibrator in 2021.
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