Diagnosing electric motor faults with vibration, motor current analysis, and motor circuit analysis

Jason Tranter, Mobius Institute


In addition to bearing failures, misalignment, and other common fault conditions, electric motors have unique failure modes that can be detected with vibration analysis, motor current analysis, motor circuit analysis, and other online and static testing techniques. Utilizing the famous Mobius animations, an introduction to how synchronous and induction motors work will be presented, and then the common failure modes will be discussed. The presentation will go on to explain how these condition monitoring techniques can be used to provide an early warning of those failure modes. Brief case studies will be provided, and there will be opportunities for questions.


Jason Tranter is the founder and Managing Director of Mobius Institute.  Jason is the author of the majority of the Mobius Institute training courses and e-learning products covering reliability improvement, condition monitoring and precision maintenance topics.  Titles include iLearnReliability, iLearnVibration, iLearnAlignment, and iLearnBalancing.  Vibration analysis classroom and distance learning courses follow ISO 18436-2 Category I – IV.

Mobius Institute has training centers in over 60 countries, and also provides certification through the ISO/IEC 17024 accredited organization, Mobius Institute Board of Certification.  Mobius has direct offices in Australia, Europe and the United States with over 20 employees.

Mr. Tranter has been involved with this field of work since 1984.  He has worked with people in a variety of industries to help improve reliability and implement successful condition monitoring programs.  He is an Australian delegate to ISO TC 108/SC5 “Condition monitoring and diagnostics of machine systems”.

Jason has written numerous articles and presented at conferences around the world. Jason has also been awarded “best presenter” at numerous conferences, including at the previous two Euromaintenance conferences. Thousands of people have viewed Jason’s Webinars and YouTube videos on the Mobius YouTube channel.