... single phase watt-hours meter For exported goods Application:DD862,DD862-4 50Hz,.,GB/T15283-1994IEC521.hour meter is a kind of induction meter. ... IEC521.Structure feature: ,,,,.The meter has separable electromagnet and the bearing has four kinds;single-jewel,magnetic thrust and ... The die-casting frame is alloy aluminum with excellent mechanical strength.main technical data:Type:DD862,DD862-4 Accurocy ...