Fluke

438-II Power Quality and Motor Analyzer

Quickly & easily discover electrical & mechanical performance of electric motors, & evaluate power quality w/ a single test tool

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438 II Power Quality and Motor Analyzer 03250

Quickly and easily discover electrical and mechanical performance of electric motors, and evaluate power quality with a single test tool

The 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 435 Series II Power Quality Analyzers. 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. Fluke 434-II, 435-II and 437-II Power Quality Analyzer users can add motor analysis capabilities to their existing units with the Fluke-438-II/MA Motor Analyzer upgrade kit. The 438-II uses data from the motor rating plate for either NEMA or IEC rated motors to aid the calculation of the mechanical parameters.

• Brings key motor analysis parameters like speed, torque and mechanical power and calculates motor efficiency without mechanical sensors
• Includes full power quality and electrical energy analyzer functionality
• Highest safety rating in industry; 1000 V CAT III / 600 V CAT IV

Drive Measurement Details

Motor Type

3 phase asynchronous (induction)

Power Source

Variable Frequency Drive

Motor Frequency Range

40 Hz - 70 Hz

Over/Under Voltage From Nominal V/F Curve (5)

-15% - 15%

Carrier Frequency Range

2.5 kHz - 20 kHz

Variable Speed Drive Technology that is Covered by the 438-II

Inverter Type

VSI only (voltage controlled) *

Control Method

V/f control, open-loop vector, closed loop vector, drives with encoders

Frequency

40 Hz - 70 Hz

* VSI drives are the most common drives. The alternative CSI drives are used in higher power applications.

Variable Speed Drive Technology Not Covered by the 438-II

Inverter Type

CSI (current source inverter)

Motors Type

Non-synchronous (DC, stepper, permanent magnet etc.)

Accessories

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