The PS2500 Power Logger has 4 current and 3 voltage channels to measure all circuit types: single-phase, two-phase, three-phase wye or delta, split delta, 2PT/2CT, DC, 45-66 Hz, and 360-440 Hz applications as well as DC. It measures voltage, current, KW, KVA, KVAR, true power factor, displacement power factor, energy in KWh, Hz and (optionally) total harmonic distortion THD.