Impedance Calculator of powergui block of a three-phase filter not displaying expected results

I am not getting the expected results of Impedance Calculator function of the powergui block. I am trying to measure the frequency response of a 13th harmonic filter. The resonance frequency is 780 Hz; therefore, I would expect the imedance the lowest at 780 Hz. The powergui impedance calculator does not reflect this result.

I set the Inductance and Capacitance values to a resonance frequency of 780 Hz.

Since the filter is tuned to the 13 harmonic (780 Hz), I would expect the impedance to the lowest value at 780 Hz like I drew in the red.