November 21, 2005
November 21, 2005 Motor Diagnostics and Motor Health News
MDMH News
- From the Editor
- 2006 Institute of Electrical Motor Diagnostics Membership
- Electrical Motor Diagnostics February Workshop
- The Impact of Electrical Motor Diagnostics
- Free Reliability Information
- SUCCESS by DESIGN Reliability Services
- Presentations at IMC-2005
- Tech Note: Confirming Rotor Bar Issues in Variable Frequency Drive (VFD) Applications
- About the Distribution of this Newsletter
From the Editor
As I write this, I am preparing for my return from Australia to the USA. The three day motor diagnostics class was standing-room only, with some excellent interaction amongst the attendees.
The course was sponsored by READS Systems, owned by Clyde Volpe of Melbourne Australia and one of the founders of the Vibration Institute of Australia, and Murray Goulburn at the Murray Goulburn dairy in Melbourne, Australia. During the course, Dr. Dmitry Chaschin of ABB presented information concerning the evaluation of an 11kV motor in which impending winding failure was detected with an ALL-TEST IV PRO 2000 and partial discharge testing. The motor owner continued to operate the motor until it ultimately failed. Murray Goulburn personnel discussed information related to a rotor problem identified in a new motor upon receipt, using MCA testing. Selwyn Old of IBEL provided numerous examples of ESA issues that he had detected through testing at his clients. Mr. Old has provided field electrical motor diagnostics testing, starting with just an ALL-TEST III, throughout New Zealand and has only recently added ESA to his list of services.
The next workshop will be sponsored directly by SUCCESS by DESIGN and Dreisilker Electric Motors, Inc. at Dreisilker Electric Motors, Inc. on February 21 through 24, 2006. Details can be found on http://www.motordoc.net.
I will also be presenting a 90 minute course on greasing electrical motors at IMC-2005 (http://www.maintenanceconference.com/imc/index.htm), as well as two short courses at the ALL-TEST Pro Learning Lab on Wednesday and Thursday in the morning. One will be on Time to Failure Estimation™ and one will be on evaluating generators.
In this newsletter, we will discuss the Institute of Electrical Motor Diagnostics for 2006, some information on the impact of Electrical Motor Diagnostics, an update on the free electrical motor diagnostics and maintenance and reliability information on http://www.motordiagnostics.com, the schedule of courses at IMC-2005 and information on SUCCESS by DESIGN Reliability.
Sincerely,
The Editor
2006 Institute of Electrical Motor Diagnostics Membership
The Institute of Electrical Motor Diagnostics (IEMD) is an end-user and vendor volunteer organization to promote the use of EMD, education and best practices in all electrical motor systems opportunities and the development of an EMD certification program. The By-Laws were drafted and reviewed during the PdM-2005 conference (the final draft is available on the http://www.iemd.org website).
Join your peers in maintenance and reliability. Join IEMD today. The membership form can be downloaded: http://www.iemd.org/downloads/IEMD%20Membership.pdf or go to the http://www.iemd.org site and select ‘Join IEMD.’
During 2006, you can join as a Founding Member (or Founding Company). IEMD Founding Members will be listed on the website and in IEMD events. For years following 2006, Founding Members will be charged the same rate as Members.
The mission of the IEMD is to share information, set standards and best practices, develop certification programs and promote Electrical Motor Diagnostic (EMD) technologies and motor-system health information as it relates to the reliable and efficient generation, transmission, distribution, control, conversion, coupling, load and process of energy. Technologies that fall within the scope include, but are not limited to: Electrical Signature Analysis; Motor Circuit Analysis; Vibration; Infrared; Ultrasonics; Partial Discharge; Insulation testing; Software; and, All other technologies and methodologies used for Condition Based Monitoring (CBM) and testing of the motor system, as defined.
Electrical Motor Diagnostics February, 2006 Workshop
Dr Penrose will be providing a four-day Motor Management and Motor Diagnostics training at Dreisilker Electric from February 21 to 24, 2006. Space is limited.
The venue is one of the largest and most modern family-owned electric motor repair facilities in North America. The class will include classical motor maintenance, Classical RCM and Backfit RCM, Time to Failure Estimation™, advanced MCA and MCSA/ESA, and other technologies, and Root-Cause-Analysis for the technician and more. The program will be technology neutral and attendees are encouraged to bring their MCA/MCSA/ESA technologies and data for review and hands-on testing!
To be included with the February Workshop:
Individual Membership in IEMD (membership fees included in workshop)
One copy of “Motor Circuit Analysis: Theory, Applications and Energy Analysis,” by Howard W Penrose, Ph.D., CMRP
One copy of “Motor Circuit Analysis: Electrical Motor Diagnostics,” by Howard W Penrose, Ph.D., CMRP
One copy of the Time to Failure Estimation™ EMD software
US Department of Energy MotorMaster Plus, Airmaster, PSAT, Steam Tools and more
Additional Motor System Maintenance and Management Software by SUCCESS by DESIGN
Contact SUCCESS by DESIGN via with any questions. Information on the workshop can be downloaded from http://www.motordiagnostics.com/presentations.htm or http://www.motordoc.net
The Impact of Electrical Motor Diagnostics
The implementation of an EMD program will have a significant impact on most industrial sites:
Reduction of troubleshooting time of over 50%
Reduction of ‘no problem found’ reports, for rotating machines sent to repair shops, by over 80%
Reduction of repair costs for rotating machines by over 50%
Reduction in motor-system life-cycle costs by about 35%
For more information, download “Impact of Electrical Motor System Maintenance and Management--- Electrical Motor Diagnostics” from http://www.motordiagnostics.com/presentations.htm
Free Reliability Information
SUCCESS by DESIGN maintains a history of excellent reliability and motor diagnostics information. This information can be obtained by going to http://www.motordiagnostics.com/presentations.htm. A few examples include:
FEMP Operations and Maintenance Manual
Infraspection Institute Electrical Inspection Standard
The original “Reliability-Centered Maintenance,” by Nowlan and Heap
MIL Std 2194, “Infrared Survey Procedure for Electrical Equipment
Electrical Signature Analysis presentations Part 1 and 2
“A Novel Approach to Industrial Assessments for Improved Energy, Waste Stream, Process and Reliability Manual.”
Developing a Motor Management Program
And much, much more!
SUCCESS by DESIGN Reliability Services
SUCCESS by DESIGN, established in 2001 by Dr Penrose as a reliability information and research warehouse and publisher, has expanded services to include:
Maintenance and Reliability Training
Electrical Motor Diagnostics Training
Industrial Assessments
3-M Program Development
Industrial Systems Technical Support
Expert Witness Services
Industrial Best Practices Development
RCM Training and Facilitation (Certified NAVSEA RCM Level II)
Backfit RCM (Maintenance Effectiveness Reviews)
Root-Cause-Analysis Training and Facilitation
Industrial Energy Conservation and Alternative Energy Projects
Technical Maintenance Training
And, More…
For additional information or questions concerning our services, contact us at
Presentations at IMC-2005
Dr. Penrose will be presenting at IMC-2005 as follows:
ALL-TEST Pro Learning lab:
Wednesday, December 7, 9:00 – 9:45am: Time to Failure Estimation
Thursday, December 8, 9:00 – 9:45am: EMD for Generators
General Presentations:
Wednesday, December 7, 1:00-2:30pm: Motor Bearing Lubrication
For more information on IMC-2005, go to http://www.maintenanceconference.com/imc/index.htm
Tech Note: Confirming Rotor Bar Issues in Variable Frequency Drive (VFD) Applications
When dealing with severe casting voids or broken/fractured rotor bars, a number of things occur including a reduced or pulsating torque resulting in an increased operating temperature and pulsating current. The result can be thermal overload in VFD applications, tripping of drives, and similar issues.
Although this situation is very rare, it can be readily confirmed, either before or after the use of EMD technologies, by observing the current readings on the VFD. There are several application reasons for ‘pulsating current.’ However, if vibration, MCA or ESA detect the presence of rotor bar faults, unsteady current on the VFD readout is a confirming indicator of the rotor casting void or broken/fractured bar issue.
About the Distribution of this Newsletter
We have received questions related to the distribution of this newsletter. This newsletter and portions of this newsletter may be re-distributed with the condition that the source (SUCCESS by DESIGN, http://www.motordoc.net) is cited or the complete newsletter is forwarded.
Sincerely,
The Editor
Howard W Penrose
http://www.motordoc.net
