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Product selection guide: Power quality analyzers

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

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

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)   
400Hz frequency measurements  

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