Electric Motor Testing Procedure Pdf

In the running configuration the windings are joined with metal jumpers.

Electric motor testing procedure pdf.

Electric motors have had a reputation for being a mix of science and magic. Ieee standard test procedure for polyphase induction motors and generators 3 park avenue new york ny 10016 5997 usa ieee power engineering society sponsored by the electric machinery committee 4 november 2004 print. 3 phase motor testing procedure the patriot mill turn and turnado machines are equipped with 3 phase motors. Testing electric motors doesn t have to be a mystery.

Ss95211 authorized licensed use limited to. Test to obtain more reliable values ranges of both wattmeter should be 10a 250v for blocked rotor test. Similarly the range of ammeter and voltmeter during blocked rotor test 10a 250v. When a motor fails it is often difficult to see why it failed just by looking at it.

To obtain short circuit current and its power factor angle block rotor test is performed on the motor. Verify scribe on the rotor shaft is correct to indicate the magnetic center of the motor as applicable. A quick check out can be done with. 3 phase motor troubleshooting pdf 3 phase motor winding resistance values 3 phase testing procedure how to test a 3 phase motor with a megger how to test motor windings single phase motor insulation resistance test procedure motor megger test results types of motor testing.

How to check an electric motor. Knowledge of the basics together with powerful new test equipment vastly simplifies the job. For motors 25 hp or greater record motor vibration measurements in accordance with the test equipment manufacturer s instruction manual. The windings are marked with tags u 1 and u 2 v 1 and v 2 w 1 and w 2.

Each motor has 3 separate windings. A motor placed in storage may or may not work regardless of its physical appearance. Guide for the use of electric motor testing methods based on iec 60034 2 1 p ll determined from residual loss 8 2 2 5 1 in table 2 may 2011 version 1 1 document developed as part of the electric motor systems annex emsa task c testing centres under the iea implementing agreement for a co operating programme on. In order to properly test the motor you must remove.

Minimum test value of motor insulation resistance is 1 meg ohm 1 mω. Esting and commissioning procedure for motors photo by teco middle east tme the measurements shall be carried out with an instrument conforming to iso 2954 10 1000 hz frequency range. With the motor at normal operating temperature the vibration velocity shall not exceed 2 8 mm s rms or 4 mm s peak in any direction.