electronic single phase watt-hour meter 1. DDS763 2. single phase 3. Simple model 4. Register ... )A, 5(30)A, 10(50)A, 20(80)ARated frequency: 50HzOverload: 6 timesOperatingFeatures:1) High accuracy, reliability, overload capability2) Low ... , small size, easy to install electronic single phase watt-hour meter