Calmet CP11B - is a single-phase power calibrator and energy meter tester. Accuracy class 0.02 or 0.05. Voltage up to 560V and current up to 120A. Automatic testing of energy meters in accordance with standards (accuracy, no-load, starting current, counter test, repeatability, voltage, frequency, harmonics). It can also test power quality analyzers, current transformers, current clamps, transducers and protective relays. The energy meter must be disconnected from the mains during testing.