by Gilbert B Norman
electricron wrote: ↑Thu Jun 17, 2021 9:56 pm 15kV 25 Hz impedance (Z) and 25kV 60 Hz impedance are not the same.Ron, why didn't I become an Electrical Engineer in this life rather than a CPA?
XL = 2π * f * L
Where XL is the inductive impedance, f is the frequency in Hertz and L is the inductance in Henrys.
If the only variable is frequency, the impedance of a circuit as 60 Hz is more than twice that at 25 Hz. But frequency is not the only variable because a different inductor (L) and its value would also change.