Fluke 438-II Three-Phase Power Quality and Motor Analyzer

Model: 438-II

This Power Quality and Motor Analyzer adds key mechanical measurement capabilities for electric motors to the cutting-edge power quality analysis functions of the Fluke 430 Series II Power Quality Analyzers. Quickly and easily measure and analyze key electrical and mechanical performance parameters such as power, harmonics, motor speed, unbalance, torque and mechanical power without the use of mechanical sensors.

$9,999.99 USD

1 to 2 Weeks




 

Fluke 438-II Offers

The ideal portable tool for motor analysis testing, the 438-II can help locate, prevent, predict 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 evaluate motor performance effectively.

Features

  • Measure key parameters on direct-on-line motors including torque, RPM, mechanical power and motor efficiency
  • Perform dynamic motor analysis by plotting of motor de-rating factor against load according to NEMA guidelines
  • Calculate mechanical power and efficiency without the need of mechanical sensors, just connect to the input conductors and you’re ready to go
  • Measure electrical power parameters such as voltage, current, power, apparent power, power factor, harmonic distortion and unbalance to identify characteristics that impact motor efficiency
  • Identify power quality issues such as dips, swells, transients, harmonics and unbalance
  • PowerWave data technology captures fast RMS data, and shows half-cycle averages and waveforms to characterize electrical system dynamics (generator start-ups, UPS switching etc.)
  • Waveform capture function captures 100/120 cycles (50/60 Hz) of each event detected event, in all modes, without set-up
  • Automatic transient mode captures waveform data at 200 kS/s on all phases simultaneously up to 6 k

Applications

  • Industrial Manufacturing Plants
  • Electrical Contracting and Consulting
  • Commercial and Institutional Facility Management Departments

Fluke 438-II mechanical metering functions

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

Provides the instantaneous motor shaft rotational speed. Combined with the motor torque, motor speed provides a snapshot of the mechanical performance of rotating equipment driven by electric motors.

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) efficiency 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. Mechanical sensors and intrusive no-load motor testing is not required, making it faster than ever to analyze overall electric motor performance.

Simply hookup the voltage measurement leads and
		flexible current probes to the service supplying the
		motor

Simply hookup the voltage measurement leads and flexible current probes to the service supplying the motor.

Input details of the motor from the rating plate
		including rated power, rated speed and motor type
		from either NEMA or IEC classifications

Input details of the motor from the rating plate including rated power, rated speed and motor type from either NEMA or IEC classifications.

Note: Measurement units can be set to local
		requirements hp/kW, lb ft/Nm etc

Note: Measurement units can be set to local requirements hp/kW, lb ft/Nm etc.

3 Fluke Corporation Fluke 438-II Power Quality and Motor Analyzer 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 summarized 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 maintenance 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.

MOTOR ANALYZER, Electrical

MOTOR ANALYZER, Mechanical

MOTOR ANALYZER, NEMA Derating

Fluke 438-II Specifications

Motor Measurment Range Resolution Accuracy Default Limit
Mechanical motor Power 0.7 kW to 746 kW
1 hp to 1000 hp
0.1 kW
0.1hp
±3%¹
±3%¹
100 % = rated power
100 % = rated power
Torque 0 Nm to 10 000 Nm
0 lb ft to 10 000 lb ft
0.1 Nm
0.1lb ft
±5%¹
±5%¹
100 % = rated torque
100 % = rated torque
rpm 0 rpm to 3600 rpm 1 rpm ±3%¹ 100 % = rated rpm
Efficiency 0 % to 100 % 0.10 % ±3%¹ NA
Unbalance (NEMA) 0 % to 100 % 0.10 % ±.15%¹ 5%
Harmonics Voltage Factor (NEMA) 0 to 0.20 0.1 ±1.5%¹ 0.15
Unbalance Derating Factor 0.7 to 1.0 0.1 indicative NA
Harmonics Derating Factor 0.7 to 1.0 0.1 indicative NA
Total NEMA Derating Factor 0.5 to 1.0 0.1 indicative NA

¹Add 5 % error when selecting Motor design type Other
Specification valid for Motor Power > 30 % of rated power
Specification valid at stable operating temperature. Run the motor for at least 1 hour at full load
(2-3 hours if the motor is 50 HP or higher) to obtain stable temperature.

Notes:

  • Supports motor design types NEMA A, B, C, D & E and IEC type H and N.
  • Rated torque is calculated from rated power and rated speed.
  • Update rate of Motor Measurements is 1x per second.
  • Default Trend duration is 1 week.
Click here for complete specifications on the Fluke 438-II

What's included with the Fluke 438-II

  • 438-II Three-Phase Power Quality and Motor Analyzer
  • 4 x 6,000 flexi probes
  • Voltage lead set
  • FC WiFi SD card
  • Carrying case
This product features Fluke Connect Technology

See it. Save it. Share it. All the facts, right in the field.

Fluke engineers have delivered an innovative mobile platform and tool that helps solve everyday problems, allowing you to instantly document measurements, retrieve historical data, and share live measurements with your team. All handled by the Android™ or iOS smart phone you already carry.

Fluke Connect with ShareLive™ video call is the only wireless measurement system that lets you stay in contact with your entire team without leaving the field. The Fluke Connect mobile app is works with over 20 different Fluke products - the largest suite of connected test tools in the world.

Make the best decisions faster than ever before by viewing temperature, mechanical, electrical and vibration measurements for each equipment asset in one place. Get started saving time and increasing your productivity.


Fluke Connect Features:

  • TrendIt™ Graphs: Use graphing to show changes in measurements, allowing you to graph and show problems instantly.
  • EquipmentLog™ History: Access equipment history building a database of equipment health and baselines with cloud backup.
  • ShareLive™ Video Calls: Save, collaborate and share measurements instantly with your team anytime, from anywhere.
  • AutoRecord™ Measurements: Instantly save measurements to your phone with Cloud backup.
  • Fluke Cloud™ Storage: Securely access equipment records anywhere, anytime.

Fluke Connect Benefits:

  • Maximize uptime
  • Minimize maintenance costs
  • Better assessments with accurate records
  • Higher efficiency with less walking around; no notebook and excel needed
  • Share troubleshooting knowledge live
  • Create and share helpful content in the field
  • Access to Fluke digital product manuals means no need to carry manuals in the field
  • Keep organized manually entered measurements

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" data-description="This Power Quality and Motor Analyzer adds key mechanical measurement capabilities for electric motors to the cutting-edge power quality analysis functions of the Fluke 430 Series II Power Quality Analyzers. Quickly and easily measure and analyze key electrical and mechanical performance parameters such as power, harmonics, motor speed, unbalance, torque and mechanical power without the use of mechanical sensors. ">