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