... site testing. It is a three phase portable standard meter used to verify active and reactive three phase meters (3 or 4 wires ... : a) Active energy: typical: 0,1%, worst case: 0.2%. b) Reactive energy: typical: 0,15%, ... worst case: 0,3%. 6) Accuracy with current clamps: a) ... Active energy: typical: 0.2%, worst case: 0,5% b) Reactive energy: typical 0,5%, worst ...