Fluke 438-II Power Quality Analyzer & Motor Analyzer

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.

Fluke 438-II Power Quality Analyzer & Motor Analyzer specifications:

• Drive Measurement Details:

• Motor Type: 3 phase asynchronous (induction)
• Power Source: Variable Frequency Drive
• Motor Frequency Range: 40Hz to 70Hz
• Over/Under Voltage from Nominal V/f Curve (%): -15% to +15%
• Carrier Frequency Range: 2.5kHz–20kHz

• 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 to 70 Hz

• Variable speed drive technology NOT covered by the 438-II:

• Inverter Type:CSI (current source inverter)
• Motors type:Synchronous (DC, stepper, permanent magnet etc.)
• Motor Frequency:<40 and >70 Hz