New Fluke 438-II Power Quality and Motor Analyzer

Innovation creates the future. Recently, Fluke has launched the Fluke 438-II Power Quality and Motor Analyzer, which typically requires the use of sensors to measure mechanical loads. However, this condition is either expensive or physically unfeasible. New Fluke ® The 438-II Power Quality and Motor Analyzer adopts innovative algorithms to not only measure three-phase power quality, but also analyze motor torque, efficiency, and speed to determine system performance and detect overload conditions, without the need for motor load sensors.

Fluke 438-II can provide electrical and mechanical characteristic analysis data without interrupting the operation of the motor, thereby simplifying the motor performance diagnosis process. By using proprietary algorithms, the 438-II measures three-phase current and voltage waveforms and compares them with rated indicators to calculate the mechanical performance of the motor. The analysis results are represented in simple data, which makes it easy to determine the work performance, determine whether adjustments are needed, and prevent faults from causing downtime.
Fluke 438-II can provide electrical and mechanical characteristic analysis data without interrupting the operation of the motor, thereby simplifying the motor performance diagnosis process. By using proprietary algorithms, the 438-II measures three-phase current and voltage waveforms and compares them with rated indicators to calculate the mechanical performance of the motor. The analysis results are represented in simple data, which makes it easy to determine the work performance, determine whether adjustments are needed, and prevent faults from causing downtime.

The measurement data provided by the analyzer can also determine the efficiency of the motor under working load conditions (such as the efficiency of converting electrical energy into mechanical torque) and mechanical power. By using these measurement data, maintenance engineers can compare the actual working power of the motor with its rated power to determine whether there is an overload condition or the opposite, that is, whether the motor power is too high, causing energy waste or increasing operating costs.


438-II is part of the Fluke 430II series three-phase power quality analyzer, which provides frontline fault diagnosis and long-term trend functions to ensure smooth operation of equipment.