DD862,DD862-4 single phase watt-hours meter For exported goods Application:DD862,DD862-4 50Hz,., ... (A):DD862,DD862-4 :2(4),2.5(5),3(6),5(10),10(20),20(40),30(60),40(80 ... voltage 2kV for 1 minute impulse voltage 6kV DD862 Kilo-Watt-Hour Meter,energy meter