Within their specified frequency ranges, the phase shift between the voltage output and the current being measured by Pearson Current Monitors is small. For frequencies at least one decade from the low and high frequency cut-off points, the phase shift is usually less than 6 degrees, and the amplitude error is less than 1%.  

Pearson Current Monitors exhibit amplitude response and phase shift as a function of frequency similar to that depicted in the above figure. To apply this graph to a specific model, use the low and high 3 dB points given in the specification sheet.