... -4 50Hz,.,GB/T15283-1994IEC521.hour meter is a kind of induction meter.which is applicable to measure the ... 1994 and lntermational standard IEC521.Structure feature: ,,,,.The meter has separable electromagnet and the bearing has four ... aluminum with excellent mechanical strength.main technical data:Type:DD862,DD862-4 Accurocy(class):2Rated voltage(v): ... IEC 62053-11 and GB/T15283 DD862 energy meter