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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.
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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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