The Fluke 438 II Power Quality and Motor Analyzer is a versatile diagnostic instrument designed to combine detailed power quality analysis with advanced motor system evaluation in a single handheld unit. Built for use in industrial, commercial, and utility environments, it helps maintenance professionals and engineers quickly identify electrical problems that affect system reliability, energy efficiency, and equipment lifespan.

This analyzer accurately measures a wide range of electrical parameters in three-phase systems up to 1000 V, including voltage, current, power (active, reactive, apparent), energy, power factor, frequency, harmonics, interharmonics, and unbalance. Its high-resolution color display and intuitive interface make setup and navigation straightforward, even for complex installations. The Fluke 438 II also captures power quality events such as sags, swells, transients, and flicker, with flexible logging modes and trigger functions that help ensure relevant disturbances are recorded for analysis.

What sets the Fluke 438 II apart is its integrated motor analysis capability. The analyzer performs motor health diagnostics by measuring parameters such as motor current signature, torque, load, and mechanical power, enabling early detection of issues like rotor bar problems, bearing wear, and shaft imbalance. These motor-related measurements are displayed alongside electrical power data, giving users a holistic view of both electrical and mechanical system performance.

With robust data storage and connectivity options, the Fluke 438 II supports long-term data logging and easy transfer of results to a PC for further analysis using companion software. The software provides advanced visualization, trend analysis, custom reporting, and compliance checks against international standards. Ruggedly constructed for field use, with safety-rated inputs and ergonomic design, the Fluke 438 II is a powerful tool for power quality audits, motor system troubleshooting, preventive maintenance, and energy optimization.

Fluke 438 II

Fluke 438 II Power Analyzer