... 4 single phase watt-hours meter For exported goods Application:DD862,DD862-4 50Hz,.,GB/T15283-1994IEC521.hour meter is ... and lntermational standard IEC521.Structure feature: ,,,,.The meter has separable electromagnet and the bearing has four ... ,magnetic thrust and magnetic floating.The case has three kinds;aluminum,plastic and glass.The die-casting ... voltage 6kV DD862 Kilo-Watt-Hour Meter,energy meter