1)DSSY1777 series 2)Accuracy:2.0 3)1.5(6), 3(6), ... ), 15(60), 20(80), 30(100) 4)ISO, CCC DSSY1777 series Three phase Three wire electronic prepayment watt-hour meterRated voltage ... :3*100/380VUltimate loadvoltage:65%-190% rated voltageCurrent Range:1.5(6), 3(6),2(8 ...