On Tue, 21 Dec 2004 22:05:27 -0500, "DGoncz 22044-0394"
wrote:

Now, electrically, does this inline resistance damp a resonant condition in
the parallel L-C "tank"?

Perhaps. "Impedance protected" simply means that the motor has enough
impedance so it will not overheat under locked rotor conditions. It's
more of a UL term than a technical descriptor. The impedance might
be due to stator resistance, rotor impedance and/or loose magnetic
coupling between stator and rotor. It is probably mostly reactive
because current flowing thru resistive impedance produces heat.