Testing Small Electric Motors

The bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame.

Testing small electric motors. When an electric motor is broken one suspect is the fiel coild of the motor stator. The test may be non destructive for in service equipment or prolonged at elevated voltage to test prototypes to the point of destruction. You need to check if electricity is getting to the motor. I would like to fulfill more at least with one important point about testing of motors insulation.

Small universal motors as for portable electric drills may contain extensive circuitry including a switch and brushes. Bearings are located at both ends of the motor which are sometimes called bell housings or end bells. They are near the back and have two colored wires. They are near the back and have two coloured wires.

Test the capacitor remove one of the wires from the capacitor to test the resistance of the start induction run motor. Test for direct shorts in the motor s power windings in induction non brush type motors. Each of the sets of windings should read about the same ohms value. Turn on the power unit that supplies electricity to the electric motor.

Find the two small metal terminals on the electric motor. Set your dmm to the ohms function and touch the probes to the terminals on the capacitor. This test may take place on installed or on the reel cable tools appliances transformers power distribution subsystems capacitors motors and any type of electrical equipment or wiring. If the meter readout indicates 0 resistance the capacitor is shorted out and needs to be replaced.

Begin to check the bearings of the motor. You need to check if electricity is getting to the motor. Turn on the power unit that supplies electricity to the electric motor. Usually red and black attached to them.

Usually red and black attached to them. Find the two small metal terminals on the electric motor. You can do it by multimeter with small manual power generator. In this video we show different tests balancing test continuity coil.

In the ohmmeter mode connect the meter to the plug and monitor the resistance as you wiggle the cord where it enters the enclosure. Many electric motor failures are caused by bearing failures.