Detailed Product Description The single-phase electric energy meter is used to measure the single-phase AC ... or 60Hz.CertificatesDDS686, Single phase energy meter, class 1, 220V, 10(60)A, 50HzThe energy meter fulfills the requirements mentioned in IEC61036 ... active power.(2) Reliable starting and creeping performance(3) Circuit board is powered by transformer, which increase the meters stability and ...