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North America Advanced Tech. is the exclusive distributor of Generatortech, Inc for China. We have Sr. Engineers and engineers who provide technical services for power plants. The technical services include installation, commissioning, train and repair.

Generatortech, Inc. specializes in the detection of rotor winding shorted-turns in synchronous generators and motors. This information can help your plant operators and engineers pinpoint the cause of abnormal vibration, assist in major maintenance decisions and verify the quality of rewound rotors. These pages provide information on the theory behind the field winding shorted-turn detection system for round rotor generators. We utilize a similar technique to detect shorted-turns in synchronous salient pole motors and generators.

Generatortech, Inc., as the industry leader in shorted-turn detection and analysis services, offers:

  • permanent and temporary air-gap flux probes designed for your machines
  • installations of permanent and temporary flux probes
  • testing services
    • tests and report provided by our staff
    • testing conducted by your own staff using rented Generatortech equipment, but data analyzed and report provided by Generatortech experts.
  • Rotor Winding Shorted-Turn Analysis Package. Will allow your staff to test and analyze your machines.

Data collected on a 2-pole, 7-coil/pole generator with 1 out of 9 turns shorted in Pole A - Coil # 3.

Overlay of Pole A and Pole B's coil #3 lead slot peaks from data above showing the decrease in slot leakage flux due to shorted turn in Pole A - Coil # 3.

Valuable Predictive Maintenance Tool

Shorted turns are the result of failed insulation between individual windings in generator rotors and can cause:

  • Load sensitive vibration
  • Undetected local winding hot spots
  • Excessive excitation currents
  • Possible forced outages

In today's highly competitive electrical power market, predictive maintenance is an effective method of minimizing maintenance costs and downtime. Monitoring the condition of your rotor windings using the Generatortech, Inc. flux probe and analysis products will help you make informed decisions on "when" and "if" to bring a machine down for a major overhaul and rotor rewinds.
 

 

 



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