Testing Small Electric Motors

Small universal motors as for portable electric drills may contain extensive circuitry including a switch and brushes.

Testing small electric motors.

They are near the back and have two colored wires. They are near the back and have two coloured wires. In the ohmmeter mode connect the meter to the plug and monitor the resistance as you wiggle the cord where it enters the enclosure. Test the capacitor remove one of the wires from the capacitor to test the resistance of the start induction run motor.

In this video we show different tests balancing test continuity coil. The test may be non destructive for in service equipment or prolonged at elevated voltage to test prototypes to the point of destruction. Usually red and black attached to them. If the meter readout indicates 0 resistance the capacitor is shorted out and needs to be replaced.

Turn on the power unit that supplies electricity to the electric motor. Europe standard at least. When an electric motor is broken one suspect is the fiel coild of the motor stator. You need to check if electricity is getting to the motor.

Bearings are located at both ends of the motor which are sometimes called bell housings or end bells. You can do it by multimeter with small manual power generator. Many electric motor failures are caused by bearing failures. The bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame.

Keep the multi meter set for 30 000 ohms and touch one test lead to one terminal and the other to another terminal. Turn on the power unit that supplies electricity to the electric motor. I would like to fulfill more at least with one important point about testing of motors insulation. Motors in factory producer have to be checked phase to ground 2 un 1000v according en 60 034 1 acc.

Each of the sets of windings should read about the same ohms value. 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. Test for direct shorts in the motor s power windings in induction non brush type motors.

Usually red and black attached to them. You need to check if electricity is getting to the motor.