Motor Testing
The Heat Is On!
As summer nears, thoughts of extreme heat and humidity start to enter our minds. Heat and humidity are not friends of the electric motor…
- Noah Bethel
- PdMA Corporation
Failure to Launch
Starting a motor across the line can generate 7-10 times (or more) the normal full load amps and create extreme torque stress on the shaft line components. In addition to these normal stresses on the electrical and mechanical elements of the motor, protection systems like overload...
- Noah Bethel
- PdMA Corporation
Determining CT Ratios Through 3 Methods
When performing energized motor testing on medium and high-voltage motors, you do not want to attach amp probes. It is important to calculate the ratio of step down from the primary current to the user current. You will use CT ratios...
- Don Donofrio
- The Snell Group
Automotive Manufacturer Compares In-House Third-Party Motor Testing. Guess Which One Saved the Most Time and Money?
Catching motor problems before they fail saves your plant headaches, not to mention a ton of money they would have lost through unplanned shutdowns. View the lessons learned by manufacturers who needed reliability programs...
Multiple Faults with an Induction Scrubber Motor
Loss of production can be big if the scrubber is down. See how to solve a high-resistance connection and a resistance-to-ground problem...
- Noah Bethel
- PdMA Corporation
Failure to Start? What’s Next?
If your motor fails to start, what actions do you immediately take? There are a variety of possibilities and questions that come to mind to help you in the right direction ...
- Noah Bethel
- PdMA Corporation
Motor Testing MCA vs Megohmmeter
Traditional Megohmmeter testing will only detect faults to the ground; however, not all motor electrical stator winding failures begin as ground faults. View this quick tip to see if you have the right testing methods…
Common Sources of High-Resistance Connections
Electric motor testing is an excellent tool for identifying resistance unbalance. This instructional presentation will provide the most common locations for electrical connection anomalies...
- Don Donofrio
- The Snell Group
Inductive Imbalance in a Wound Rotor Motor
Testing wound rotor motors can be tricky depending on what and where you are testing. In this quick tip, see what rotor motors are used for and how to perform a test...
- Noah Bethel
- PdMA Corporation