Motor Analysis Tool Evaluates Power Quality


The Fluke 438-II Power Quality and Motor Analyzer is a motor analysis tool for evaluating the electrical and mechanical performance of electric motors and troubleshooting power quality.


With an innovative method by Veros, it calculates motor output torque, speed, horsepower, and efficiency.  Without using mechanical sensing devices, users can evaluate system performance and detect overload conditions while the motor is operational.


  • Measure key parameters on direct-on-line motors including torque, RPM, mechanical power, and motor efficiency
  • Perform dynamic motor analysis by plotting of motor derating factor against load according to NEMA/IEC guidelines
  • Calculate mechanical power and efficiency without the need of mechanical sensors
  • Measure electrical power parameters such as voltage, current, power, apparent power, power factor, harmonic distortion and unbalance to identify characteristics that impact motor efficiency
  • Identify power quality issues such as dips, swells, transients, harmonics and unbalance
  • PowerWave data technology captures fast RMS data, and shows half-cycle averages and waveforms to characterize electrical system dynamics (generator start-ups, UPS switching etc.)
  • Waveform capture function captures 100/120 cycles (50/60 Hz) of each event detected event, in all modes, without set-up
  • Automatic transient mode captures waveform data at 200 kS/s on all phases simultaneously up to 6 kV
  • Fluke Connect compatible – view data locally on the instrument, via Fluke Connect mobile app and PowerLog 430-II desktop software
  • Safety rated for industrial applications 600 V CAT IV/1000 V CAT III rated for use at the service entrance and downstream
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