... , active meter or reactive meter.2- Simultaneously test meters with same specifications but different constants3- Operation ... no-load test/ start test/ basis errors test/ voltage influence test meter constant test/ meter reverse turn test/ energy counting test etc.6- ... A, 5m A, 10m A, 25m A, 50m A, 0.1A, 0.5A, 1.0A ,2.5 A,5 A,10 A, 20 A,50 A,100 A ... 24 optional DZ603-12Three-Phase Energy Meters Test Bench