... ~20A,0~500V ETCR 4000 Double clamp digital phase meter Product Characteristics:Measure AC Current and ... CharacteristicsMeasure AC Current and Voltage, Measure the phase between two voltages, two currents, one voltage ... current, AC voltage, AC leakage current, Direct phase sequence test; Transformer group, Inductive and Capacitive Circuit ... ). Field Application ETCR4000 Double clamp digital phase meter