The Iris Power MDSP3 is a portable instrument specifically designed to monitor squirrel‐cage induction motors. The Iris Power MDSP3 detects rotor cage winding faults including broken rotor bars, cracked shorting rings, die‐cast manufacturing faults, and unequal air gaps as they are the causes of many mechanical and electrical failure mechanisms in induction motors.

The Iris Power MDSP3 uses the Current Signature Analysis technology which relies on the concept that faults in the induction motor rotor or driven components result in changes to the rotor magnetic field pattern. Unique magnetic rotating fields are produced due to the faults which induce detectable stator current components indicative of the fault.