... is the 3 phase 4 wires meter which can meas the rated frequency (50HZ) electric energy. The meter is for indoor use,and ... bad condition may be will make some mistake of the meter\ DTS480 3(6)A,5(20)A,10(40) ... 1.0,if the current will be 0.5%,,the meter will run continuously from left-right.c.creepingWhen there is ... will be 80%-100% of the rated volt,the meter's runing should not be more than 1 circle3.more ...