... single phase watt-hours meter for exported goods Application:DD862,DD862-4 50Hz,.,GB/T15283-1994IEC521.hour meter is a kind ... of induction meter.which is applicable to measure the rated frequency 50Hz and power loss in ... /T15283-1994 and lntermational standard IEC521.Structure feature: ,,,,.The meter has separable electromagnet and the bearing has four kinds;single ...