... minute test. Main FeaturesThree phase four wore electric energy meter is a kind of response KWH meter ,it is used in ... 50Hz three phase AC active power and reactive power.DT862, DT864,DS862, DS864, are three phase active power electric meter,DX862, ... DX864,DX865,DX863 are three phase reactive power meter. DT862-4 Series Three Phase of Meter New Power