Technology Campus - Insulation Systems

AEP has the expertise to test large motors and generators through predictive maintenance testing and standard accelerated aging and evaluation tests for high voltage systems.

Predictive Maintenance testing using Electro magnetic interference (EMI) signature analysis. Any electrical insulation that is under duress tends to exhibit partial discharge, which in turn creates EMI, a broadband electrical noise signal that can be easily monitored and trended. Using frequency selective techniques, signature patterns for several dozen discrete conditions have been developed. We bring our services to you in our EMI Test Van. Our online, non-intrusive and predictive maintenance testing not only monitors the targeted machine but also anything else connected to it.

We can identify a variety of conditions that can alert you to numerous issues, from minor partial discharge to an impending major overhaul. Whether you have loose connections on bus work, a failed switch or failing bearings, our portable instrumentation can help you find it.

  - Accelerated Aging & Evaluation Tests
  - Voltage Endurance
  - Dissection
  - Corona Pulse Height Measurements

We offer a complete program of coil/bar tests for rotating machinery including voltage endurance, dissection and corona pulse height measurements. If you are developing or improving a high voltage insulation system, send us a sample to test. We can determine what the rating is of your overall system. Or have us evaluate your production quality control. We will verify that your production methods are producing a quality result.

400- or 250-hour test as per IEEE standard 1043-1996 at voltages up to 50 kV ac, 60 Hz and temperatures up to 135 degrees Celsius as specified by the customer (up to 40 kV ac, 400 Hz, 60 hours option available at the same price). The maximum allowable slot length is five meters, or 16 feet, 5 inches. Pretest activities include physical inspection and, if requested, tan delta (power factor), tip-up, and capacitance measurements at no additional cost. Written test reports provided and will include data/log sheets and test results. Coils shall be in a “ready-to-test” condition, including pre-cut guard circuits consisting of 1/8-inch gaps in the conductive slot tape (for tan delta measurements), when received.

Dissection of each coil cell or bar, including evaluation report and photographs.

Using an Adwel PDA-Premium Partial Discharge Analyzer, partial discharges from each coil will be measured at a voltage specified by the customer. A graph of pulses per second versus pulse magnitude is provided.