... active / reactive energy measurement4) Automatic voltage and current range selection.5) Three phase voltage, current, phase, frequency, active, ... , 100A(wide range)4) Testing mode: single phase, three-phase three wires (active, reactive true, reactive cross ... frequency), TTL electrical level6)Weight: 5.5kgs(single range); 12kgs(wide range) MDP2000 Three-Phase Digital Reference Standard Energy Meter