Don Donofrio
Five Minute Facts
Rotor Bar Fault Progression with Load
Rotor bar anomalies are difficult to identify and when they are identified the available data can be confusing and misinterpreted. This instructional presentation describes what effects load will have on spectral data associated with rotor bar anomalies.
- Don Donofrio
- The Snell Group
Two Minute Tips
Understanding Crest Factor
Crest Factor is a parameter often displayed with power analysis data for voltage and current. This instructional presentation will give you an understanding of what Crest Factor is...
- Don Donofrio
- The Snell Group
Webinars
Identifying Rotor Anomalies with Electric Motor Testing
Finding and confirming rotor problems can be challenging, frustrating and sometimes easy to misdiagnose. This live webinar will provide examples of many methods of utilizing Electric Motor Testing to identify rotor anomalies and provide confirmation and correlation...
- Don Donofrio
- The Snell Group
Five Minute Facts
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
Five Minute Facts
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
Five Minute Facts
Fault Localization Using Electrical Signature Analysis
When conducting Electrical Signature Analysis on a motor circuit you may find numerous spectral peaks in the FFT. This instructional presentation provides a means to localize the origin of the voltage and current distortions represented in the spectral data...
- Don Donofrio
- The Snell Group
Five Minute Facts
Importance of Checking Amp Probes Prior to Data Collection
In this presentation we will discuss the many different options available when checking amp probes, which include current monitoring, balance loading, FFT…
- Don Donofrio
- The Snell Group
