... meritorious electric energy meter " all the technical requirements. Main functionl Measurement of positive and negative active energy, power ... meter structure and so on.l Small size, light weight, high accuracy, wide load, overload, and easy installation.l Electronic ... single phase A.C. watt hour metersingle phase A.C. watt hour metersingle phase A.C. watt hour metersingle phase A.C. watt hour meter