How To Test An Electric Motor

It measures the same or similar to the voltage you noted from the label on the electric motor if power is reaching the motor.

How to test an electric motor. Keep the multi meter set for 30 000 ohms and touch one test lead to one terminal and the other to another terminal. Check the multimeter measurement. Turn the rotors and push and pull the shaft to test the bearings. When an electric motor fails to start runs intermittently runs hot or continually trips its overcurrent device there my be a variety of causes.

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. 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. The megger will help to detect areas of deteriorating insulation where the windings may soon short.

Check c to e s to e r to e. Test for direct shorts in the motor s power windings in induction non brush type motors. Sometimes the trouble lies within the power supply including branch circuit conductors or motor controller. In this video we show different tests 180 degrees test bar to.

Test electric motor windings when a bad motor winding cannot be found by a physical inspection many times an ohmmeter may show that there is a defective winding. When an electric motor is broken one suspect is the armature with commutator of the motor. Another possibility is that the driven load is jammed binding or mismatched.