... 3 phase 4 wires meter which can meas the rated frequency (50HZ) electric energy. The meter is for indoor use, ... condition may be will make some mistake of the meter\ DTS480 3(6)A,5(20)A,10(40 ... rated volt,rated frequency and COS=1.0,if the current will be 0.5%,,the meter will run continuously ... ,the meter's runing should not be more than 1 circle3.more pic: Three phase electronic type Power Meter with LCD ...