Motor Testing
Five Minute Facts
The Damaging Effect Water Can Have on Your Electric Motors
This case study discusses the damaging effect water can have on an electric motor. Also discussed is the testing required to diagnose the problem with the motor and the cost savings by detecting and diagnosing the problem early.
- Noah Bethel
- PdMA Corporation
Two Minute Tips
MCA™ Improves DC Motor Testing Capabilities
Tasks for DC motors such as commutator & brush inspections, lubrication, are very important for their long-term successful operation. However, these inspections fail to determine the condition of the electrical winding or insulation..
- Mark Koch
- ALL-TEST Pro, LLC
Two Minute Tips
Drive Input Imbalances
Current imbalances are sometimes referred to as a burglar alarm; generally problematic and need further diagnosis. However, imbalance at the inverter input under lightly loaded conditions is a normal phenomenon of the electrical circuit..
- Noah Bethel
- PdMA Corporation
Interviews
Meet MOBIUS CONNECT Ambassador: Howard Penrose
Howard W Penrose, Ph.D., CMRP is the president of MotorDoc LLC, past Web-Editor-in-Chief for the IEEE Dielectrics and Electrical Insulation Society, and 2018 Chair of the Society for Maintenance and Reliability Professionals (SMRP). He is a Certified Maintenance and Reliability Professional (CMRP), RCM Analyst and Facilitator (NAVSEA/NAVAIR), vibration analyst, electrical signature analyst, infrared analyst. As a Brand Ambassador for MOBIUS CONNECT, Howard....
- Howard Penrose
- MotorDoc LLC
Two Minute Tips
Leading and Lagging Indicators
Leading indicators are those that occur early in the P-F curve while lagging indicators occur later in the failure cycle. Both are key indicators, but it is important to know which one you are dealing with to better diagnose the severity of the situation..
- Noah Bethel
- PdMA Corporation
White Papers
Gaps in Your Electric Motor Reliability Program
Businesses invest millions of dollars in what they believe will be a fail-safe maintenance program for their electric motors. Regular tests are scheduled for each motor; engineers dutifully record the data when required and then move on to the next motor.
- Noah Bethel
- PdMA Corporation
Two Minute Tips
Space Heaters
Depending on the environment and criticality of your electric motor, space heaters should be strongly considered if you want to ensure maximum reliability and expected motor life.
- Noah Bethel
- PdMA Corporation
Two Minute Tips
Motor Storage
Proper motor storage is critical if we hope to achieve normal life expectancy from our electric motors. Not only is proper motor storage important for good motor health, it may be required to maintain a warranty on motors that we purchase..
- Noah Bethel
- PdMA Corporation
Two Minute Tips
Motor Magnetic Center
Running a motor uncoupled will pull the motor rotor into a magnetic center, often marked on the shaft to ensure that the rotor is lined up on the magnetic center when it is coupled to the load. .
- Noah Bethel
- PdMA Corporation