How Do I Test A Small Electric Motor

As with the first test the important thing to observe is that each measurement should be about the same.

How do i test a small electric motor.

To check an electric motor to see. So when a motor fails to operate it may not be obvious what the problem is. Set the voltage setting of the insulation resistance tester to 500v and check motor windings to earth. Small universal motors as for portable electric drills may contain extensive circuitry including a switch and brushes.

Identify the type of motor and examine its nameplate information. Knowledge of the basics together with powerful new test equipment vastly simplifies the job. If it stays shorted or does not rise there is probably an issue with the capacitor and may need to be replaced. Small electric motors operate a wide variety of electrical devices such as remote control models children s railroad sets and computers.

Most electric motors whether ac or dc fail after time for reasons that may not be electrical in nature. 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. Placing the test probes on the capacitor terminals the resistance should start low and gradually increase as the small voltage supplied by the meter s battery gradually charges the capacitor. The second check is the bar to bar resistance test pictured on right.

Again the specific value is based on the motor design wires per loop number of turns per coil and wire gauge. Test for direct. The motor being dissected here is a simple electric motor that you would typically find in a toy. If you hook the battery leads of the motor up to a.

Each winding leg should have some small resistance reading. The meter should not show an open or a short when a winding leg is measured. This will check every coil in the motor armature. In the ohmmeter mode connect the meter to the plug and monitor the resistance as you wiggle the cord where it enters the enclosure.

Small fan motors last a long time due to few moving parts. They generally operate on low voltage electricity 6 to 24 volts and are powered by batteries or a transformer that reduces 110 volts to the required low voltage. Testing electric motors doesn t have to be a mystery. You can see that this is a small motor about as big around as a dime.

The type of motor will determine the types of tests you will perform to troubleshoot it. Check c to e s to e r to e.