... phase watt-hours meter For exported goods Application:DD862,DD862-4 50Hz,.,GB/T15283-1994IEC521.hour meter ... to National standard GB/T15283-1994 and lntermational standard IEC521.Structure feature: ,,,,.The meter has separable ... electromagnet and the bearing has four kinds;single-jewel,magnetic thrust and magnetic floating.The case has three ... DD862 Kilo-Watt-Hour Meter,energy meter