Major technical data: Accuracy class: 1. 0 Power consumption: <4VA Rated voltage: Three phase four wire 3X220/380V, 3X57. 7/100V Three phase three wire 3X100V Basic current: 2. 5(10)A 5(25)A 10(40)A Precision: 1. 0 High overload: 5times Operating time: >20years Main functions: 1) Measurement of 50Hz pre-paid 3-phase active power 2) Warning of remained energy and remind the user for payment 3) Set up maximum load, warning of overload and power off 4) Re-reading of consumed power, left power, cumulative power and number of Prepayments for power 5) Power off when no energy in the meter Features: 1) High accuracy, reliability, overload capability 2) Low power consumption 3) SMT technology and re-flow soldering technology 4) Light weight, small size, easy to install 6) Transfer IC card parameter