... single-phase electric energy meter is used to measure the single-phase AC active power at 50Hz or 60Hz.CertificatesDDS686, Single phase energy meter, class 1, 220V, 10(60)A, 50HzThe energy meter ... . Main Technical ParameterItem ModelRated Voltage (V)Rated Current (A)AccuracyConnection Single Phase Electric Power MeterDDS6862201.5(6)1.0 or 2.0Mutual induction ...