Comparative Analysis of Basic Errors of High-level Electric Energy Meter Verification Device

The high-level electric energy meter verification device(EEMVD) is a kind of verification device used to verify standard electric energy meters. The basic error is the fundamental indicator of the metrological characteristics of the EEMVD. This article compares and analyzes the basic errors of three sets of high-level EEMVDs used in the electric energy measurement laboratory. The verification data show that the domestically developed verification device fully meets the accuracy requirements of the verification regulations, and the accuracy level is equivalent to the level of ZERA company's high-level EEMVD.