How To Test An Electric Motor Armature

Remove all power from the motor and isolate the circuit.

How to test an electric motor armature.

180 degree resistance to check the condition of the armature windings the armature will need to be removed from the motor. Here are three quick checks you can perform with a volt ohm meter to test a dc motor armature winding to determine if a motor armature is functioning properly. However if the motor design has external brush holders you can unscrew the brush caps and remove the brushes. Test the first set of wires.

If they are smooth then they are fine. To perform a cursory check of the bearings place the motor on a solid surface and place one hand on the top of the motor spin the shaft rotor with the other hand. The new brushless motor is maintenance free highly reliable and has a life of 20 000 hours. To check the condition of the armature windings the armature will probably have to be removed from the motor.

Check for shorts or open armature windings by touching one test lead to one commutator the grooved copper section that contacts the brushes segment and the other test lead to another segment. Perform a check of the bearings. Take your multimeter and set it to ohms. Compare each segment with every other segment and look for either open infinity ohms or shorted zero ohms armature windings.

Feel them using your fingers. The white wire is called the run wire. How to test electric motor windings step 1. Look at the bearings on the top and bottom parts of the casing to see if they show signs of wear.

Clean the windings and motor interior with shop air and inspect for any damage. Tag the circuit breaker to prevent accidental. Connect the probes to. Check winding insulation for.

Lift the armature from the lower casing. Closely watch feel and listen for any indication of rubbing scraping or unevenness of the spinning rotor. New dc brushless motor introducing a robust dc brushless motor and gearbox combinations. Now is the time to test the white brown and white wires.

However if the motor design has external brush holders you can unscrew the brush caps and remove the brushes.