How To Test An Electric Motor Armature

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.

How to test an electric motor armature.

If they are smooth then they are fine. Check winding insulation for. 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.

New dc brushless motor introducing a robust dc brushless motor and gearbox combinations. Perform a check of the bearings. Take your multimeter and set it to ohms. Look at the bearings on the top and bottom parts of the casing to see if they show signs of wear.

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. Lift the armature from the lower casing. However if the motor design has external brush holders you can unscrew the brush caps and remove the brushes. Compare each segment with every other segment and look for either open infinity ohms or shorted zero ohms armature windings.

Depending upon brush size this may allow access to the commutator without removing the armature from the motor. Closely watch feel and listen for any indication of rubbing scraping or unevenness of the spinning rotor. The white wire is called the run wire. If they have grooves or feel pitted they need replacing.

Tag the circuit breaker to prevent accidental. Remove all power from the motor and isolate the circuit. Clean the windings and motor interior with shop air and inspect for any damage. Feel them using your fingers.

Connect the probes to. However if the motor design has external brush holders you can unscrew the brush caps and remove the brushes. How to test electric motor windings step 1. Now is the time to test the white brown and white wires.

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.