Articles
10 Things That Can Make You Misdiagnose With IR
An IR inspector cannot be an expert in everything but should at least be well informed about the potential problems that can be found during an inspection...
- Luca Del Nero
- DarkWave Thermo
The Application of Modern Medium Voltage Variable Frequency Drives
Pumps, fans, and compressors account for over 60% of loads in industrial and processing industries, while medium voltage motors over 200 horsepower account for 1% of the motor population and 45% of electric motor energy consumption...
- Howard Penrose
- MotorDoc LLC
EMSDs: Streamlined Maintenance and Reduced Downtime
Electrical equipment requires periodic maintenance to continue to operate as designed, and it is well understood that this maintenance saves money in the long run...
- Martin Robinson
- IRISS Inc.
Forensic Analysis of Electric Machines
A tremendous amount of time, productivity and production can be lost using improper troubleshooting and evaluation techniques...
- Howard Penrose
- MotorDoc LLC
The Importance Behind The Addition of Annex D In IEEE Standard 43-2013
The standards working group behind the present edition of IEEE Std 43 made significant changes in the overall standard, including modifications to temperature normalization to 40°C. This was done to accommodate the many changes and observations in insulation chemistry and combinations over the past decades...
- Howard Penrose
- MotorDoc LLC
Ultrasound Provides Inspection Insight
On a recent plant visit, solutions provider Bob Dunn with I&E Central, Inc. used the SDT 270 ultrasound instrument and a contact sensor to inspect and capture waveforms on a series of valves on an automated manufacturing machine...
- Bob Dunn
- I&E Central, Inc.
Large Electric Motor Reliability: What Did the Studies Really Say?
One of the most frequently quoted studies related to electric motor reliability is a 1983 Electric Power Research Institute (EPRI) project performed by General Electric...
- Howard Penrose
- MotorDoc LLC
Slow Speed Bearing Monitoring & Other Condition Monitoring Applications
As maintenance and reliability professionals, we are tasked with the responsibility of ensuring that the assets that we are responsible for are operating the way that they were designed and installed for...
- Adrian Messer
- UE Systems
When to Use Custom Shims to Correct Soft Foot
One of the most common problems with alignment of machinery is a condition known as soft foot. This is when one or more of the machine feet are not making solid contact with the mounting base...
- Mike Olszewski
- Reliability Concepts