Here at Precision Zone, we use specialized test equipment for a full evaluation of motors and their performance. With these tools, we are able to obtain a complete analysis of the motor’s health.  With just a quality multimeter, a reduced test can be performed to try and identify any major issues with the motor’s windings. Typically, a milliohm and megohm meter are the recommended tools of choice for field evaluations but a multimeter can work as well.

  • Power off machine
  • Clean motor terminals/pins being checked
  • Look for high resistance or open circuit readings between each phase and ground
  • Measure resistance between phases. The variance between the corresponding phases should be under 10%. Resistances should generally be under 2Ohms of resistance.
  • These tests help identify significant problems with the motor.

At Precision Zone, we guide our clients toward the best decisions that serve their business needs. If you have specific repair or replacement questions, get in touch with our expert customer support team at 800-551-4420 or

Written by:

Marketing & Creative Director at IcarTeam, and supporting afiliated businesses,
including Precision Zone, Precision Education Integrators and Alfra Tools.
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