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Product Selection Guide: Power quality analyzers

 
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Fluke 435 Series II Power Quality and Energy Analyzer front view
Fluke 438-II Power Quality and Motor Analyzer
 
Fluke 434-II and 435-II Power Quality and Energy AnalyzersFluke 438-II Power Quality Analyzer & Motor Analyzer
 

Base Measurements

DC current   
Three-phase   
Single-phase   
RMS voltage   
RMS current   
Neutral current   

Instrument Features

Compact size for use inside panels   
Status display only   
Setup by laptop   
Real-time display of measurements   
On-instrument setup   

Measurements

400Hz frequency measurements  
Basic waveform display   
Fast oscilloscope function   
Phasor diagram   
Power and energy   
Total harmonic distortion   
Voltage harmonics   
Current harmonics   
Power harmonics   
K-factor   
Inrush current (triggered)   

Operating Environment

Industrial   
Inside substation   
Residential / commercial   

Advanced Measurements

Unbalance   
Interharmonics   
Power inverter efficiency   
Energy loss calculator   

Current Range

< 1,600   
> 3000A (option)   

Measurement Storage

Long-term RMS logging   
Screenshots   
Timed snapshots   
Waveform recording   

Advanced Features

Automatic transient triggering   
En50160 analysis   
Flicker   
IEC61000-4-30 complianceClass AClass A 
Mains signaling   
Phase sequence components   
Transient capture < 1MHz  
Transient capture > 1MHz  

Powering Options

Battery operated   

Communications Options

Ethernet, WiFi or USBWiFi/USBWiFi/USB