electrical
Two Minute Tips
Determining the Number of Poles and RPM
Give me the number of poles and I can tell you the RPM; give me the RPM and I can tell you the number of poles. This instructional presentation discusses the formulas related to determining theses values...
- Don Donofrio
- The Snell Group
Webinars
Electrical and Current Signature Analysis of Electric Motors and Gearboxes
In this live webinar, we will discuss how ESA is used to evaluate electric motors, couplings and gearboxes of several types including speed reducers, increasers and cooling tower boxes. Electrical Signature Analysis (ESA) technology is used to review incoming power quality and the machine through the entire powertrain........
- Howard Penrose
- MotorDoc LLC
10 Minute Talk
The Critical Angle of Ultrasonic Electrical Inspection of Transmission Line
Electrical ultrasound inspection is one of the most unique applications, as it is not dependent on decibel levels as much as the patterns the anomaly produces. However, limited approach restrictions can make it difficult to get…
- Drew Walts
- IRISS
10 Minute Talk
Four Electrical Failure Modes
Electrical failure modes can be divided into four main categories. This tip will briefly discuss these categories and their associated thermal patterns to help the field thermographer better understand and identify thermal anomalies found in the field...
- Roy Huff
- The Snell Group
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
Are Traditional Electrical Maintenance Practices Sustainable?
Traditional electrical maintenance practices, such as tightening and Megger testing, are all designed to do one thing: prove that the system is safe and meets the operational requirements of the plant. But shutdown calendar-based maintenance is a complete waste of money...
- Martin Robinson
- IRISS Inc.
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
Two Minute Tips
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…
White Papers
Using Electrical Maintenance Safety Devices to Bridge the Skills Gap
With an impending skills gap among technical workers, proactive maintenance plans must also be safe, efficient and easier to implement …
- Martin Robinson
- IRISS Inc.
