... : class 0.1 Advanced power source technology, and operation software Test 3~60 various meters Comprises of PWM power sourceStandard meter ... ~60 meters testing stations are availableBasic tests: intrinsic error test, hidden acction test, start test, standard deviation testInput power supply:220va±10%,50hz ... -4-3-2) can be performed 1-PH KWH Meter Test Bench