... Current:100A 2. transparency case,black case 3.600hr DD862 single phase mechanical type watt-hour meterAPPLICATION DD862 single phase watt- ... measure the rated frequency of 50HZ,and powerloss of single-phase AC meshwork.The meter has the features ... CapacityStaring CurrentInsulationDD862-42.0220V,230V,240V1.5(6),2.5(10),5(20)3(10),10(40), ... (60),40(80)200%IbDD866-41.5(6),2.5(10),5(20),3(12),10(40), ...