This course will cover mainly AC motors ranging from low voltage to medium voltage induction motors (we will cover synchronous motors also) from few KW to lOs of MW. Motor is not given its due importance in the industry generally and some of the motors are being rewound after one failure and another without considering loss of efficiency due to Motor efficiencies are not measured or tracked. Reliability is not given its due consideration. This course will have in depth discussions on Motor Management.

 

Course Contents:

  • Identify the components in the winding system; factors that determine Resistance(R), Inductance(L), Capacitance(C), and Impedance(I/F)
  • Describe how changes in R, L, Z, and I/F affect the winding system
  • Explain the Lenz Law, Ohms Law, and Faraday’s Law
  • Use the basic MCA™ instruments to manually measure R, L, Z, Fi and I/F
  • List the different types of AC Motors, identify their components and describe the purpose of each component
  • Determine Motor Shaft Speed based on Measured Values of Voltage, Current, Nameplate Speed and Rated Power
  • List the main types of failures associated with AC Motors
  • Describe the various techniques available to identify electrical failures in winding systems
  • Explain the various measurements used in MCA™
  • Evaluate a motor’s winding condition based on MCA™ measurements
  • Explain the process for correcting MCA™ readings caused by “Rotor Position”
  • Explain the purpose of the ALL-TEST PRO 31™ (AT31™)and ALL-TEST PRO 5™ (AT5™); and describe their features
  • Obtain data from a 3 phase AC motor using the AT31™ and the AT5™ (on the AUTO and manual modes)
  • Evaluate the condition of an AC Motor based on the measurements taken with the AT31™ and AT5™
  • Demonstrate the ability to enter data and evaluate the condition of an AC Motor using the Condition
  • Discuss the affects of Resonance in a mechanical system and what it will do to the electrical spectrum
  • Explain how to determine which gear is at fault when gear problems are diagnosed in the electrical spectrum
  • List the motor electrical faults that can be automatically analyzed with ESA
  • Define what is meant by pole pass frequency (PPF)
  • Evaluate the condition of a squirrel cage rotor using the ESA spectrum and rotor severity
  • Demonstrate the ability to upload data stored in the AT5™ onto the MCA™ software and generate a machinery report
  • Explain the 4 Primary Maintenance Philosophies
  • Describe the 3 phases of Predictive Maintenance
  • List the 6 most common de-energized motor diagnostic techniques and the 5 most common energized diagnostic techniques. Describe the motor fault that each of the techniques identifies.
  • Describe the 4 stages of rolling element bearing failure and explain how to determine which stage a defective bearing is in
  • Explain the operation of the different types of AC Electric Motors
  • Determine Motor Shaft Speed based on Measured Values of Voltage, Current, Nameplate Speed and Rated Power
  • Describe how electrical signature analysis (ESA) collects its signal
  • Demonstrate how to change the resolution of the high frequency and the low frequency spectrum
  • Explain the importance of sidebands in the FFT and discuss their meaningDemonstrate how to enter machine information in the ESA Software
  • Demonstrate how to verify running speed is correct
  • Perform an automatic analysis
  • List what mechanical faults can be automatically analyzed with ESA
  • Discuss the relationship of Dynamic Load to bearing life
  • Explain the difference between Static and Dynamic Eccentricity
  • Define what is meant by Stator Electric Faults
  • Explain the main purpose of the ALL-TEST PRO Energized II™ (ATPOL II™) and briefly describe it’s features
  • Use the ATPOL II™ to obtain data from a 3 phase AC Motor in the Remotely, Locally and Manual Modes
  • Demonstrate the ability to upload data stored in the ATPOL II™ into the ESA software and generate a machinery report

Trainer: 

Irfan Akhtar (PE, ME, BE) 22+ Years of Experience. Expert in Asset Management, Project Management, Construction, Feasibility Studies, O&M of Power Plants, Condition Assessment of Electrical Equipment, Consultancy Services, Owner Engineer, Project Management, Reliability Centered Maintenance.