How do you check an electric motor for a short?

Test for direct shorts in the motor’s power windings in induction (non-brush type) motors. Keep the multi-meter set for 30,000-ohms and touch one test lead to one terminal and the other to another terminal. Each of the sets of windings should read about the same ohms value.Click to see full answer. Subsequently, one may also ask, how do you test a small electric motor?If the shaft turns freely, set the multimeter to its ohms function to check resistance. The windings (all three in a three-phase motor) should read low but not zero ohms. The smaller the motor, the higher this reading will be, but it should not be open.Furthermore, how do I know if my electric motor is bad? Testing for short to ground Using Ohm meter: Disconnect all power from machine. Check all three wires singly T1,T2,T3 (all three phases) to the ground wire. Readings should be infinite. If its zero or reads any continuity at all, then a problem exists with either the motor or cable . Hereof, how do you check a electric motor to see if it is good? Check for shorts between the power wiring and ground. Select ohms resistance on the multi-meter and set for the 30,000-ohm range. Touch one lead to each motor power lead and the other to the metal motor casing. Any value less than about 0.2 mega ohms is a reason to discard the motor.How do you troubleshoot an electric motor? 2. Motor Has Been Running, Then Fails to Start Fuse or circuit breaker is tripped. Replace the fuse or reset the breaker. Stator is shorted or went to ground (Motor will make a humming noise and the circuit breaker or fuse will trip) Motor overloaded or jammed. Capacitor (on single phase motor) may have failed.