KEY MEASUREMENTS
Electrical power, harmonics, unbalance, motor speed, torque and mechanical power without the need of mechanical sensors.
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.
* Not all models are available in all countries. Check with your local Fluke representative.
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Preventive maintenance simplified. Rework eliminated.
Save time and improve the reliability of your maintenance data by wirelessly syncing measurements using the Fluke Connect® system.
- Eliminate data-entry errors by saving measurements directly from the tool and associating them with the work order, report or asset record.
- Maximize uptime and make confident maintenance decisions with data you can trust and trace.
- Access baseline, historical and current measurements by asset.
- Move away from clipboards, notebooks and multiple spreadsheets with a wireless one-step measurement transfer.
- Share your measurement data using ShareLive TM video calls and emails.
- 438-ll is part of a growing system of connected test tools and equipment maintenance software. Visit the website to learn more about the Fluke Connect® system.
Download the app at:
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Overview
The Fluke 438-II/Basic Power Quality and Motor Analyzer adds key electric motor mechanical measurements to the Fluke-430-II Series Power Quality Analyzers. An electric motor converts electrical energy into rotational forces that is used to drive critical industrial rotating machines like pumps, compressors and fans. By analyzing the input power the Fluke 438IIBasic can calculate the mechanical forces transferred to the mechanical load, without having to use an inline force transducer.
Quickly and easily discover electrical and mechanical performance of electric motors, and evaluate power quality with a single test tool
The new Fluke 438-II Power Quality and Motor Analyzer adds key mechanical measurement capabilities for electric motors to the advanced power quality analysis functions of the Fluke 430 Series II Power Quality Analyzers. Quickly and easily measure and ana - lyze key electrical and mechanical performance parameters such as power, harmonics, unbalance, motor speed, torque and mechanical power without the need of mechanical sensors.
The ideal portable motor analysis test tool, the 438-II can help locate, predict, prevent, and troubleshoot power quality problems in three-phase and single-phase power distribution systems, while giving technicians the mechanical and electrical information they need to effectively evaluate motor performance.
Motor torque
Calculates the amount of rotational force (displayed in lb.ft or Nm) developed by a motor and transmitted to a driven mechanical load. The motor torque is the single most critical variable that characterizes the instantaneous mechanical performance of rotating equipment driven by electric motors.
Motor speed
Motor mechanical load Measures the actual mechanical power (displayed in hp or kW) produced by motors and provides a direct link to overloading conditions without simply basing it on the motor current.
Motor efficiency
Shows the effectiveness of each motor within a machine, assembly line, plant, and/or facility in converting electric power to useful mechanical work. By properly aggregating the efficiencies of a population of motors the total (aggregate) effi - ciency can be estimated. Comparisons to expected motor efficiencies at observed operating conditions can help quantify the cost associated with motor energy inefficiency.
How it works
Using proprietary algorithms, the Fluke 438-II Power Quality and Motor Analyzer uses three- phase current and voltage waveforms to calculate motor torque, speed, load and efficiency at a 1 second update rate. The motor air gap field, as observed via the voltage/current waveforms, provides the basis for the measurements. Mechani - cal sensors and intrusive no-load motor testing is not required, making it faster than ever to analyze overall electric motor performance.
Quick and easy measurement setup
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Simply hookup the voltage measurement leads and flexible current probes to the service supplying the motor.
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Input details of the motor from the rating plate including rated power, rated speed and motor type from either NEMA or IEC classifications.
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Note: Measurement units can be set to local requirements hp/kW, lb ft/Nm etc.
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Electrical motor analysis
The Fluke 438-II provides a complete breakdown of electrical parameters. Prior to beginning motor analysis, it’s recommended to make base line power quality measurements to assess the state of harmonics and unbalance on the electrical service output as these two properties can have a serious negative impact, on motor performance.
When in Motor Analysis mode, results are sum - marized for electrical performance, mechanical performance and derating (according to NEMA recommendations).
The easy to understand four-level color severity scale indicates motor performance in relation to the recommended electrical parameter levels including rated power, power factor, unbalance and harmonics.
For mechanical power you can instantly view the mechanical output power along with motor torque and speed. The mechanical output power is instantly compared with electrical power to provide you with live efficiency measurements. With this feature you can easily measure machine performance during each operation cycle.
The NEMA derating screen is updated as the load and the electrical conditions change, and each new measurement is plotted on the tolerance graph as a “+”. In this example we can see that motor is within tolerance but is close to the service factor. This indicates that there may be a need for power quality mitigation, motor main - tenance or some other performance improving adjustment. By frequently performing these tests over time, known benchmarks and performance trends can be created, enabling informed maintenance investment decisions
Applications:
- Industrial Manufacturing Plants
- Electrical Contracting and Consulting
- Commercial and Institutional Facility Management Departments