Why Test Motors?

Because Motors Fail

Not all winding faults start as ground faults. Instead, they can start as a weakness in the winding insulation system that may eventually fault to ground when the motor stops running.

Motor testing is integral to the success and efficiency of your business. ALL-TEST Pro instruments ensure that testing your motor is safe, easy, and dependable. Our capabilities for troubleshooting and predictive maintenance are a means of sustaining critical systems and achieving meaningful ROI. Don’t leave motor failure up to chance – reap the cost-saving benefits of complete motor testing.

Winding Faults & ALL-TEST Pro Instruments

Winding defects begin as energy crossing an insulation fault, which isolates at least one turn. There are 4 basic types of winding faults:

  • Between 2 or more conductors in a coil
  • Between coils in the phase
  • Between coils in different phases
  • Between a coil or phase and ground

Symptoms of winding faults include higher operating temperatures, nuisance tripping, and reduced motor life. The short-term result of these faults is reduced efficiency, and higher operating costs. The long-term result is always motor failure.