... 50Hz,.,GB/T15283-1994IEC521.hour meter is a kind of induction meter.which is applicable to measure ... and lntermational standard IEC521.Structure feature: ,,,,.The meter has separable electromagnet and the bearing has ... ,DD862-4 Accurocy(class):2Rated voltage(v):220-240Rated current(A):DD862,DD862-4 :2(4 ... 400IbInsulation current:2kV 1,6kVAC voltage 2kV for 1 minute impulse voltage 6kV1,SHORT WAIL METER2, ...