... 2. transparency case,black case 3.600hr DD862 single phase mechanical type watt-hour meterAPPLICATION DD862 single phase watt-hour meter ... ),5(20)3(10),10(40),15(60)20(80),30(100)400%Ib0.5%IbAC Voltage 2kv for 1 minuteimpulse ... .5(5),3(6),5(10),10(20)20(40),30(60),40(80)200%IbDD866-41.5(6),2.5 ... ),5(20),3(12),10(40),15(60),20(80),30(100)400%Ib Others products introduce: