Ntesting of 3 phase induction motor and troubleshooting pdf

Record all nameplate information for the induction motor. In this test we generaly takes two test ntinuty test 2. Before troubleshooting the 3 phase induction motor, we must have to know about the 3 phase induction motor, star delta starter and its connection diagram. The ideal mode of testing is phase to phase and phase to ground. Pdf operation of threephase induction motor with line. If the motor is used in an application that is critical to the operation or production, testing is usually limited to checking the voltage at the motor. Motors are susceptible to the gradual failure of their insulation resistance. If the voltage is present and correct, the motor is assumed to be the. Instructions for three phase induction motors teco. Threephase dualvoltage motor insulation resistance testing. As with a squirrel cage induction motor, the rotor is the. If a single phase condition exists, correct the problem. You can test your motor insulation with the help of a megger.

Identifying motor defects through fault zone analysis. The rotor will constantly be turning to align its magnetic field with that of the stator field. Three phase induction motors are one of the most popular electric motors commonly found in processing plants or any manufacturing concern. Next you need to conduct a threading balance check by evaluating the three phase currents. In this project, two kinds of induction motor faults, stator short circuit fault and bro ken rotor bar fault, are. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. The following is some common faults and troubleshooting method of three phase induction motors for your reference. Here we are giving you only overview on 3 phases induction motor. Troubleshooting threephase motors the extent of troubleshooting a 3o motor is dependent upon the motor s application. How to test a 3 phase motor windings with an ohmmeter. By observing a few essential rules, you will ensure problemfree operation for many.

Installation and maintenance threephase induction motors. Therefore, learn about these phenomena, find out the cause, and then troubleshoot it. Every 3 phase motor has six 6 terminals with the supply voltage connected to three 3 of those terminals. The 3 phase set of currents, each of equal magnitude and with a phase. Maintenance and troubleshooting three phase induction motor. Three phase dualvoltage motor insulation resistance testing three phase dualvoltage motors are used for most daytoday operations in todays industrial plants. The most common configuration of a three phase motor is the delta. If you want to test a 480v motor, then the voltage required would be v with a reading of 2m ohms or more. Induction motors applications, control and fault diagnostics. The use of ann for pattern recognition consists of two steps. Faults identification in threephase induction motors using support.

These motors including both hollow shaft and solid shaft, are. One instrumentation rack with the usual test equipment. Star wye configuration with the delta side connected to supply voltage. The very first thing that you should do before starting any type of maintenance on a motor is a visual inspection, a lot of times the trouble can be found just by looking, because if the problem is that bad then it should be very obvious by observation. They run at a constant speed from noload to the full load. We thank you for making this choice, and would ask you to read the contents of this manual. Single line to ground fault at any terminal of a threephase induction motor blows out the fuse of the faulted phase to disconnect the voltage supply of that phase but the open conductor may. In this tutorial we explain how to check induction motor with series test lamp. How to test a 3 phase motor windings with an ohmmeter custom search. These motors run conveyor belts, pumps, fans, and many other applications. Isbn 9789535122074, pdf isbn 9789535163992, published 20151118.