Electric Motor Testing Procedure

Knowledge of the basics together with powerful new test equipment vastly simplifies the job.

Electric motor testing procedure.

Home technical articles testing and commissioning procedure for electric motors scope of motor testing it should be noted that the scope of motor testing depends upon the motor type and size this being indicated on the inspection forms. So when a motor fails to operate it may not be obvious what the problem is. The bearings allow the shaft or rotor assembly to turn freely and smoothly in the frame. A c electric motor troubleshooting guide test procedures in this article we provide a diagnostic guide to determine and repair problems with electric motors.

The windings are marked with tags u 1 and u 2 v 1 and v 2 w 1 and w 2. The electrician or maintenance person must have this skill to determine the electrical motor condition defected or cannot use anymore it can save. Testing electric motors doesn t have to be a mystery. 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 motor name plate fla.

Minimum test value of motor insulation resistance is 1 meg ohm 1 mω. Ideally the meter should barely move off the highest resistance indication. Electric motors have had a reputation for being a mix of science and magic. Each motor has 3 separate windings.

In order to properly test the motor you must remove. And press a test probe to this spot and the other test probe to each of the motor leads one at a time. Check c to e s to e r to e. Many electric motor failures are caused by bearing failures.

Loss of insulation resistance of an electric motor is one of the first signs of motor failure. This article gives a description of electric motor capacitor test procedures to determine if a capcitor is damaged or working normally test procedures to measure the capactor s capacitance or microfarads mfd or uf to determine if it is working within its rated capacitance range. See how to measure insulation resistance of electric motor 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 name plate fla. Deviations from rated fla could signify problems with the motor under test.

In the running configuration the windings are joined with metal jumpers. Electrical motor is the common used in industry all over the world it very important device to made production smoothly to ensure the electrical motor condition is good or not we must know how to testing it. The page top photo was taken of of an oil burner electric motor not an air conditioning blower fan motor or pump motor but you ll see that all of these electric motors look a lot alike. 3 phase motor testing procedure the patriot mill turn and turnado machines are equipped with 3 phase motors.