Measurement of AC large current, higher harmonic current, complex waveforms current, transient current, phase, electric energy, power, power factor etc. 1. Model No.:ETCRFA-FB 2. Current Range: AC 0A~3000A/6000/10000A(Optional) 3. Phase Error: ≤1° 4. Current Frequency: 45Hz~70Hz 5. CT Structure: Rogowski coil 6. Response Frequency: 0.1Hz~1MHz