motor
Two Minute Tips
How to Troubleshoot a Variable Speed Drive and Motor Circuit
Do you have a Drive that’s tripped and you don’t know if it’s the Motor? A variable speed drives (Variable frequency Drive) are often built with current transformers monitoring each phase for current balance or over current, and will trip on a predefined limits.
- Mark Gurney
- 3Phi Reliability
Two Minute Tips
Condemning a Motor Using MCA™
Experience has shown that 20 to 40 percent of motor systems tested may have some sort of alarm condition. Just because a motor has exceeded the alarm limits in MCA Basic™ or MCA PRO™ it does not necessarily mean the motor will fail or should be stopped immediately. For over 30 years the dedicated staff at ALL-TEST Pro have gathered data and resources to determine when a motor will most likely fail on the most common 3-phase squirrel cage motors.
- Mark Koch
- ALL-TEST Pro, LLC
Five Minute Facts
Fluting: Beyond the Motor
Before scrolling past what may appear to be another boring article about fluting, VFD’s, grounding brushes and ceramic bearings, I urge you to read on and join in the discussion.
- Matthew Knuth
- SPM Instrument
White Papers
Putting the Simple Back into Viscosity
Simply stated, viscosity is defined as the internal resistance of a fluid to flow. That doesn’t sound too difficult, does it?
- John Sander
- Lubrication Engineers
Two Minute Tips
Motor Storage
One thing that is typically overlooked is how spare motors are stored. Over time, moisture, dirt, dust, and even general vibration from other sources can have a negative impact on the electrical and mechanical condition on the stored motors.
- Mark Koch
- ALL-TEST Pro, LLC
Webinars
Complete Motor Diagnostics Using Motor Circuit Analysis
An introduction to Motor Circuit Analysis (MCA) how to utilize MCA to evaluate the overall health of an electric motor as well as discuss why it is important to develop a motor testing program.
- Eric Winzer
- ALL-TEST Pro
Articles
Electrical Frequencies Calculation and AC Motor Faults Patterns. Part 2
In the Part 2 the practical example will be analyzed.
Let’s look the background and calculate the most common frequencies produced by motor that potentially will be required for further analysis.
- Pawel Lecinski
- CMRP
Articles
Electrical Frequencies Calculation and AC Motor Faults Patterns. Part 1
The fault diagnosis of induction motors, being probably the most common drivers used for industrial machinery plays an important role to reduce the catastrophic failures and production lost tonnage.
- Pawel Lecinski
- CMRP
Two Minute Tips
Electric Motor Reliability Trifecta: Quality Control (Part 1)
Trifecta refers to picking the top three finishers in a horse race, and it can be worth a lot of money. Applying that to motor reliability, what are the top three applications of test technology to ensure you win big in reliability? In this tip we will be exploring quality control...
- Noah Bethel
- PdMA Corporation
