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Energy-Technik

Power Quality & Motor Analyzers

Fluke 438-II

The Fluke 438-II Power Quality and Motor Analyzer is a dual-function diagnostic tool designed for both electrical power quality analysis and mechanical motor performance evaluation—without requiring mechanical sensors. It's ideal for industrial environments, motor-driven systems, and predictive maintenance workflows.

Electrical Power Quality Analysis

  • Voltage & Current: Measures RMS voltage/current, frequency, power (active, reactive, apparent), and power factor.
  • Harmonics: Up to the 50th harmonic for voltage and current.
  • Unbalance Detection: Voltage and current unbalance to identify phase issues.
  • Transient Capture: Records waveform data at 200 kS/s on all phases up to 6 kV.
  • PowerWave™ Technology: Captures fast RMS data and half-cycle averages to analyzeMotor Speed (RPM): dynamic events like generator startups or UPS switching

Motor Analyzer Capabilities

  • Motor Speed (RPM): Derived from electrical signals and motor nameplate data.
  • Torque & Mechanical Power: Calculates torque and output power in kW or hp.
  • Motor Efficiency: Evaluates how effectively electrical energy is converted to mechanical work.
  • De-rating Factor: Plots motor performance against load per NEMA guidelines.

  • No Mechanical Sensors Needed: All mechanical parameters are derived from electrical inputs

Explore more on the product's official website:

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