Phone 800-517-8431
HOME > FLUKE > POWER-QUALITY-ENERGY-ANALYZERS-AND-RECORDERS > POWER-QUALITY-ENERGY-ANALYZERS > 3-PHASE-POWER-QUALITY-MOTOR-ANALYZER-IFLEX-PROBES-438II

Fluke 438-II

Three-Phase Power Quality and Motor Analyzer with iFlex Probes

Brand: Fluke
Model No: 438-II
MPN: 4778976
Our Model No: 438II
Condition: NEW
PDF Document Icon Data Sheet (0.99 MB)
438-II

$9,999.99


Only 1 left in stock
Add to Cart
Request a Quote

Product Features:

  • Measure key parameters on direct-on-line motors, including torque, RPM, mechanical power and motor efficiency
  • Perform dynamic motor analysis by plotting motor de-rating factor against load, according to NEMA guidelines
  • Calculate mechanical power and efficiency by connecting to input conductors; no need for mechanical sensors
  • 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 in all modes, without set-up
  • Automatic transient mode captures waveform data at 200 kS/s on all phases simultaneously, up to 6 kV

The Fluke 438-II Three-Phase Power Quality and Motor Analyzer with iFlex Probes allows you to quickly and easily measure and analyze 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.


Simply hook up voltage measurement leads and flexible current probes to service supplying motor Click for larger image

Quick, Easy Setup

Motor Torque

With the 438-II you can calculate the amount of rotational force (displayed in lb.ft or Nm) developed by a motor and being 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.

Input details of motor from rating plate, including rated power, rated speed and motor type from either NEMA or IEC classifications Click for larger image

Motor Setup

Motor Speed

This tool can also provide the instantaneous motor shaft rotational speed. Combined with the motor torque, motor speed is a snapshot of the mechanical performance of rotating equipment driven by electric motors.

Motor Mechanical Load

The 438-II 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

Show the effectiveness of each motor within a machine, assembly line, plant, and facility in converting electric power to useful mechanical work with the 438-II analyzer. 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.

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

Motor Analyzer

How it Works

Using proprietary algorithms, the 438-II 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.

Electrical Motor Analysis

This tool provides a complete breakdown of electrical parameters. Prior to beginning motor analysis, it is recommended to make baseline 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, the 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.

With this feature, 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, making it easy to measure machine performance during each operation cycle.

The NEMA derating screen is updated as the load and electrical conditions change, and each new measurement is plotted on the tolerance graph as a "+". By frequently performing these tests over time, known benchmarks and performance trends can be created, enabling informed maintenance and investment decisions.

  • 1 - Test Lead Set
  • 4 - Thin Flexible Current Probes (i430)
  • 1 - Battery
  • 1 - Power Adapter
  • 1 - Combination WiFi/SD Card
  • 1 - Soft Carrying Case
  • 1 - User Manual and PowerLog Software (CD)
Carrying Cases
Model Description Buy Now Price
C437-II Fluke C437-II Hard Carrying Case with Rollers for 430-II Series Add to Cart
($699.99)
Sale $629.99
C1740 Fluke C1740 Soft Carrying Case with Buckle for Power Quality Analyzers Add to Cart
($299.99)
Sale $269.99
HH290 Fluke HH290 Hanging Hook for 190-II Series Add to Cart
($89.99)
Sale $71.95

Only 3 left in stock
Current Clamps
Model Description Buy Now Price
I400S Fluke I400S AC Current Clamp/BNC, 0.5A-4000A AC Switchable Add to Cart
($289.99)
Sale $260.99

Only 3 left in stock
I430-FLEXI-TF-II-4P Fluke I430-FLEXI-TF-II-4P Thin Flexible AC Current Clamps for 430-II, 6000A AC, 24 in. (Pack of 4) Add to Cart

$1,499.99

I430-FLEXI-TF-II Fluke I430-FLEXI-TF-II Thin Flexible AC Current Clamp for 430-II Series, 6000A AC, 24 in. Add to Cart
($499.99)
Sale $449.99
I5SPQ3 Fluke I5SPQ3 AC Current Clamps for 430-II Series, 5A AC Add to Cart

$1,299.99


Only 1 left in stock
Media Storage
Model Description Buy Now Price
FC-SD 8GB Fluke FC-SD 8GB Fluke Connect Wireless 8 GB SD Card Add to Cart

$99.99

Modules
Model Description Buy Now Price
GPS430-II Fluke GPS430-II GPS time synchronization module for Fluke 430 Series Add to Cart

$1,599.99

Power Supplies
Model Description Buy Now Price
BP291 Fluke BP291 High Capacity Li-Ion Battery for 190-II Series, 4800 mAH Add to Cart
($349.99)
Sale $314.99

Only 3 left in stock
Test Leads, Probes and Clips
Model Description Buy Now Price
WC100 Fluke WC100 32-Piece Color Localization Set (8 Colors) Add to Cart
($25.99)
Sale $22.61
Fluke Careplans
Model Description Buy Now Price
G3P-GROUP4 Fluke G3P-GROUP4 5-Year Gold CarePlan for 196C, 199C, 434, 435, 724, 725, 726, 700BCW, 741 and 743 Add to Cart

$1,099.99

S3P-GROUP4 Fluke S3P-GROUP4 3-5-Year Silver CarePlan for 196C, 199C, 434, 435, 724, 725, 726, 700BCW, 741, 743 Add to Cart
($374.99)
Sale $337.49

Only 2 left in stock
Fluke 430 Series II
Fluke Series 430 II
How To Check For Dips And Swells Using The Fluke 435
How to Check for Dips and Swells
Using the Fluke Series 435 II
How To Connect Using The Phasor Diagram On A Fluke 435
How to Connect Using the Phasor Diagram
on a Fluke Series 435 II
How To Perform A Logger Set-Up On The Fluke 435 II
How to Perform a Logger Set-Up
on the Fluke Series 435 II
How To Perform A Transient Capture On The Fluke 435
How to Perform a Transient Capture
on the Fluke Series 435 II
How To Perform A Trend Configuration On The Fluke 435
How to Perform a Trend Configuration
on the Fluke Series 435 II
How To Transfer Data From The Fluke 435 To Power Log
How to Transfer Data
from the Fluke Series 435 II
How To Use A Harmonics Test In A 435 Power Quality Analyzer
How to Use a Harmonics Test
in a Fluke Series 435 II
Logging Capture and Sample Rate On a Fluke 435 Series II
Logging Capture and Sample Rate
on a Fluke Series 435 II
Fluke 438-II Power Quality and Motor Analyzer product overview
Fluke 438 II Product Overview
Data Sheet: PDF Document Icon (0.99 MB)
Manual: PDF Document Icon (2.92 MB)
Electric motor efficiency and reliability: New testing approach matches real world conditions PDF Document Icon (325 KB)
↑ Back to Top