Shorted Turn Theory
Overview of Shorted Turn Theory & Flux Probe Testing
A flux probe test determines the existence of rotor winding shorted turns by measuring the magnetic flux produced by each coil in a generator's rotor.
Shorted Turns: Cause & Effect
Shorted-turns are the result of failed insulation between individual windings in generator rotors. The impact of operating with shorted turns can result in abnormal vibration, load limits, higher operating temperatures and forced outages.
Benefits of Testing Online and At-Speed
Generatortech Rotor Winding Shorted Turn Flux Probe testing is the most comprehensive testing performed while your generator is online and at-speed.
Air-Gap Flux Probe Data
The success of the detection system requires separating the slot leakage flux data from the distortion factors.
Technical Considerations
Generatortech estimates 50% of the rotors in operation may have one or more shorted turns. Periodically monitoring for shorted turns will help establish whether new turn shorts are developing and when corrective action should be taken.
Setting Up a Shorted-Turn Condition Monitoring Program
Click to learn more about how to plan for the installation of permanent probes.
The Data Acquisition & Analysis Program
Generatortech's Acquisition and Analysis Program has been designed to quickly and easily acquire and save data from flux probes.
Case Studies
Since 1989, thousands of Generatortech flux probes have been installed in generators worldwide. We have a large and growing database of test data on these units.