Motor testing pdf

Motor testing pdf





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3. Rotor Currents. 4. Induction Motor Equivalent Circuit. 5. Torque and Power Characteristics. 6. Operation Beyond the Range 0 < s < 1. 7. Determination of Motor Constants. 8. Bibliography. B. EXPERIMENT. 1 . Equipment List. 2. Speed and Direction of Rotation. 3. Starting Current. 4. No Load Test. 5. Locked Rotor Test. C. 4 Nov 2004 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: SH95211. PDF: SS95211. Authorized licensed use limited to: Iowa Efficiency Testing of Electric Induction Motors. Anibal T. De Almeida and Fernando Ferreira. ISR, Dep. Eng. Electrotecnica. University of Coimbra, Polo II. 3030 Coimbra, Portugal. Tel: +351-39-796-218/201. Fax: +351-39-406-672. Email: adealmeida@isr.uc.pt. 1 - INTRODUCTION. Electric motors use over half of all All types. • Check the appearance of the motor. Check for body damage or damage to the cooling fan blade or shaft. • Manually rotate the shaft to check the bearing condition. Check for free & smooth rotation. • Note the motor data from the motor NAME PLATE . • Earth Continuity: Use your ohmmeter to verify the resistance Motor Testing Made Easy™ is a presentation brought to you by ALL-TEST Pro, A division of BJM Corp. Your presenter is Dr. Howard Penrose, the leading expert in motor circuit analysis. BJM Corp is a cutting edge manufacturer of electrical submersible pumps and motor circuit analysis equipment. Established 1983 in Old Chapter 1 A Practical Motor Test Panel. Chapter 2 Tools for the Motor Rewinding Shop. Chapter 3 Time-Saving Coil Winding Machine. Chapter 4 Armature Testing. Chapter 5 Equipment for Testing Stators. Chapter 6 General Classification of A,C Motors. Chapter 7 Split-Loop Armature Winding. Chapter 8 loop Windings for Static or insulation testing: is performed with the motor disconnected from the power supply. It is typically performed from the motor control cabinet, and should be carried out in a specific test sequence: Winding resistance test: will highlight dead shorts, loose connections and open circuits. Such tests must be performed. david.mcfate@iotech.com. Induction Motor Testing and Evaluation. Summary. As energy costs rise, more emphasis is being placed on determining the health of large inductive motors. Motor Current Monitoring and Analysis (MCSA) is a straight forward tool to diagnosing problems with large inductive motors. This technique If the motor is more than 5 HP, it is usually serviced. Troubleshooting three-phase motors. The extent of troubleshooting a. 3o motor is dependent upon the motor's application. If the motor is used in an application that is critical to the operation or pro- duction, testing is usually limited to checking the voltage at the motor. Reverse side of card (at right) is used to record the test data. Figure 3–Typical scale on the Megger insulation tester. HoW To InTERPRET RESISTAnCE REAdInGS. As previously mentioned, insulation resistance readings should be considered relative. They can be quite different for one motor or machine tested three.

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