Course Objective

Examine typical induction motor faults and address state-of-the-art current signature techniques for diagnosing a variety of defects. Learn relationships between current and vibration monitoring to detect the root cause of problems. Describe fundamentals of variable frequency drives.

 

Who Should Attend

Plant managers, safety and reliability engineers, consultants, university professors, maintenance personnel, motor manufacturers and motor repair shop personnel.

 

Download Bill Thompson’s PowerPoint presentation:”Motor Current Signature Analysis For Diagnosis Of Faults In Induction Motor Drives”

 

Course Benefits

• A hands-on understanding Motor Current Signature Analysis (MCSA)
• The electrodynamics and construction of induction motors
• The features of high quality motors
• The design and operation of variable frequency drives
• Increased confidence in fault diagnosis

 

Course Topics

• Asset management, RBM, CBM, and condition monitoring for electrical drive systems
• Causes and effects of: broken rotor bars, abnormal airgap eccentricity, shorted turns in stator windings, shaft/coupling misalignment, stator core vibration characteristics and problems
• Interrelationships between current and vibration monitoring to detect the root cause (RCA) of problems
• Fundamentals on current signature analysis
• MCSA instrumentation
• Current signature patterns due to faults
• Reliable interpretation of current spectra
• Effect of motor design, load, and drive train
• Prediction of fault severity: reliability and limitations
• Case histories from a range of industries
• MCSA products: operation, strengths, and limitations
• Diagnosis of mechanical problems via MCSA
• Signal processing concepts and issues

 

Hands-on exercises will be conducted on the Machinery Fault Simulator (MFS) to demonstrate typical motor faults and to examine the issues surrounding vibration analysis versus motor current signature analysis. Typical motor faults will include unbalanced rotor, bowed rotor, broken rotor bars, shorted turns in low voltage stator windings, air gap eccentricity, and bearing defects under various loading conditions. The instruction is performed in a classroom setting with workstations arranged for conducting controlled exercises. Each workstation consists of a MFS with a variety of fault kits, an 8-channel data acquisition system with a PC, software for simulating signal processing concepts, training and data analysis software, fully wired sensors, and necessary accessories such as tachometer, strobe, etc. All the PCs are networked for open exchange of data and enhanced discussion. Tape recorded faults from case histories will be included.

 

Course Comments

“This was very useful … The information is technical, which is good. Good application … Good starting knowledge to apply MCSA in the workplace.”— Matthew St. Pierre, Portsmouth Naval Shipyard “This course was informative and helpful. I would recommend it to colleagues interested in MCSA.” — Alastair Monbray, Alldon “Very good for the student who has some good basic electrical motor experience … I would recommend it to colleagues involved in condition based maintenance analysis.” — David Roy, NAVSEA “The elementary concepts together with the advanced ones were really valuable. The demonstrations were important and illustrative.”— Erik Bonaldi, Federal University of Engineering, Brazil

 

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Length	3½-day course (8:00 AM to 5:00 PM)
Fee	$1,595.00
Dates	To be Announced
Location	Richmond, Virginia USA
Instructor	Bill Thomson of EM Diagnostics Ltd., a recognized world leader in motor diagnostics. Bill Thomson is a recognized world leader in condition monitoring and diagnostics of electrical drives. He is a registered Chartered Engineer, a Fellow of the IEE, and a Senior Member of the IEEE. He commenced his career as an electrician (1961) and can relate to the industrial world at all levels. He has 40 years of experience in installation, testing, design & monitoring of induction motors. He has published over 60 papers on condition monitoring for Induction motor drives. He introduced MCSA into industry in the 1980s which led to the development of Motormonitor. For the past 18 years he has been an expert consultant to industry on MCSA & Vibration Analysis

 

If you are interested in attending, please contact us by email at info@spectraquest.com or by phone at (804) 261-3300.Space is limited.