Abstract:

The verification device of three-phase electric energy meter is widely used in legal metrological verification institutions and authorized metrological technical institutions.In the process of using three-phase electric energy meter verification device to carry out watt hour meter verification,abnormal phenomena such as software failure response,current I protection alarm,overload alarm,open circuit alarm,short circuit alarm occur from time to time.This paper analyzes and studies these abnormal phenomena combined with specific examples,summarizes the fault manifestations of verification device under different abnormal states,and puts forward scientific solutions,It is of great practical significance to guide the verification personnel to find out the root cause of the fault and eliminate it in the first time with detailed case.At the same time,energy meter verification device manufacturers improve the production process according to this research,which is helpful to improve the product quality and reduce the failure rate.

Key words: Three-phase electric energy meter, Verification device, Abnormal state