Fluke 438-II Three Phase Power Quality and Motor Analyzer
The Fluke 438-II is an advanced, portable testing tool designed for professionals seeking to measure and analyze critical electrical and mechanical performance parameters quickly and accurately. Featuring cutting-edge iFlex Probes, this Power Quality and Motor Analyzer allows technicians to assess key factors such as power, harmonics, unbalance, motor speed, torque, and mechanical power—all without the need for intrusive mechanical sensors.
Efficient Motor Analysis Without Sensor Limitations
Utilizing proprietary algorithms, the Fluke 438-II leverages three-phase current and voltage waveforms to provide in-depth insights into motor performance. With a remarkable 1-second update rate, it calculates motor torque, speed, load, and efficiency, thus streamlining the motor analysis process. The reliance on voltage/current waveforms negates the necessity for mechanical sensors, making the process faster and more efficient.
Key Measurements Include:
- Motor Torque: The crucial variable representing instantaneous mechanical performance of electric motor-driven equipment.
- Motor Speed: Measured as RPM, this helps evaluate performance in conjunction with torque.
- Motor Mechanical Load: This gauge indicates actual mechanical power, offering insight into potential overload conditions.
- Motor Efficiency: Critical for assessing how effectively electric motors convert power to useful work, vital for plant operations.
Comprehensive Electrical Motor Analysis
Before diving into motor performance analysis, the Fluke 438-II enables baseline power quality measurements, allowing users to identify critical characteristics like harmonics and unbalance that can adversely affect motor function. In Motor Analysis mode, results are displayed for electrical and mechanical performance, utilizing a four-level color severity scale to indicate how parameters such as rated power and power factor align with recommended levels.
Key Features
- Direct Measurement: Quantify torque, RPM, mechanical power, and efficiency on direct-on-line motors.
- Dynamic Motor Analysis: Visualize motor de-rating factors versus operational loads, adhering to NEMA guidelines.
- Mechanical Power Calculation: Evaluate efficiency by connecting to input conductors, eliminating the need for mechanical sensors.
- Electrical Power Analysis: Accurately measure voltage, current, apparent power, power factor, harmonic distortion, and unbalance.
- Power Quality Assessment: Identify issues such as dips, swells, transients, harmonics, and unbalance effectively.
- PowerWave Data Technology: Captures fast RMS data and highlights half-cycle averages and waveforms, enhancing insights into electrical dynamics (e.g., generator start-ups).
- Waveform Capture: Retain data for 100/120 cycles (50/60 Hz) of each event without extensive setup.
- Automatic Transient Mode: Simultaneously captures waveform data across all phases at speeds of up to 200 kS/s and voltages up to 6 kV.
