EMI Testing on rotating machinery helps diagnose electrical and mechanical problems in their early stages.


EMI Testing on Rotating Machinery Testing can identify problems in these and many other areas:

  • Generator and motor stator windings
  • Generator and motor bearings
  • Motor power leads
  • Generator isolated phase bus work
  • Arcing generator shaft grounding brush
  • Loose connections
  • Open exciter diode fuses

Electrical insulation that is under duress exhibits partial discharges, creating electro-magnetic interference (EMI), a broadband electrical noise signal that can be monitored and trended. Our non-intrusive, predictive maintenance approach monitors both the targeted machine and anything connecting to it.

Sample Generator EMI Data

Sample Generator EMI Data d