... 50Hz or 60Hz, DT862, DT864, DS862 and DS864 series are the three-phase active energy watt -hour meters, ... and DX862, DX864, DX865 and DX863 series are threephase reactiveenergy watt-hour meters.Main Technical data1. The ... type and the type of connectionthrough multi-purpose current transformer or multipurposevoltage transformer.3 Start: under reference voltage, reference frequencyand COS ...