How To Test An Electric Motor

Another possibility is that the driven load is jammed binding or mismatched.

How to test an electric motor.

In this video we show different tests 180 degrees test bar to. Keep the multi meter set for 30 000 ohms and touch one test lead to one terminal and the other to another terminal. Sometimes the trouble lies within the power supply including branch circuit conductors or motor controller. When an electric motor fails to start runs intermittently runs hot or continually trips its overcurrent device there my be a variety of causes.

To check an electric motor to see why it failed look at the outside for signs of debris that has been sucked into the motor windings as well as broken mounting holes or feet and darkened paint that could indicate excessive heat. Check the multimeter measurement. Turn the rotors and push and pull the shaft to test the bearings. Test for direct shorts in the motor s power windings in induction non brush type motors.

Set the voltage setting of the insulation resistance tester to 500v and check motor windings to earth. If you have a reading and your motor isn t operating it s certain the motor is the problem and needs replacing. When an electric motor is broken one suspect is the armature with commutator of the motor. If the rotors move smoothly and there is little.

Minimum test value for a good electric motor is at least 1mω running amps test with the motor running check the full load amps fla with a suitable meter or preferably a clamp on meter and compare with the. It measures the same or similar to the voltage you noted from the label on the electric motor if power is reaching the motor. The megger will help to detect areas of deteriorating insulation where the windings may soon short.