*Safe Operating Range (SOR) is the range in which a Permanent Magnet can be operated safely. A magnet operating in SOR will not cause a permanent reduction in a PM motor’s power rating. Outside SOR, such permanent reduction will be caused by irreversible demagnetization of the magnet. Severe duties, such as overloads, overheated magnets or short-circuits can cause such performance reductions in PM motors. A knee point k on magnet’s B(H) demagnetization curve determines the SOR. Determining the coordinates of k and visualizing the SOR are unique features of PMAG. You can use the visualized SOR to protect against a permanent reduction of a PM motor’s power.