1)DSS1777 series 2)Accuracy:2.0 3)3*100/380V, 1.5(6), 3(6),2.5(10), 5(20), 10(40), 15(60), 20(80), 30(100) 4)ISO, CCC DSS1777 three-phase four wire electronic carrier watt-hour meter Specification:Accuracy class:2.0Rated Voltage:3×100/380VRated Current:1.5(6), 3(6),2.5(10),5(20), 10(40), 15(60), 20(80), 30(100)