Understanding impedance

Q   What is the meaning of impedance and how does it work with hubless fan motors?

A   Impedance is another term for resistance. The motors do not have thermal overloads, but rely on the resistance of the winding to absorb the applied voltage in the event of an overload condition or stall.

Question from Kevin Kalloo, Air Tech Service Inc., New York . Answer by Dennis Bush, manager-market development, A.O. Smith, Electrical Products Co.