Fluke 434
3-Phase Power Quality Analyzers
Discontinued See: 434-II

  • Records all your necessary values in a three phase system
  • Highest safety rating in the industry
  • Four voltage and four current channels
  • Captures waveform data on all phases simultaneously
  • System-Monitor: Six power quality parameters
    on one dashboard
  • Automatic Transient display: Never miss an event
  • Auto Trend: Don't waste time setting up recordings
  • Rugged, handheld recorder
  • Seven hours operating time per charge on NiMH battery pack
  • Transfer data files to you PC for reporting
    and analysis using FlukeView software

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Fluke 434 Shown

Product Information

Datasheet 538 KB Click on the link to open the PDF in a new window
Functions Overview HTML
Technical Notes HTML
Virtual Demo Flash
Download Demo 1.8 MB EXE
Ordering Info Jump to Product Models, Prices, Accessories, and Ordering Information
PDF Help
Fluke 434 three-phase power quality analyzers help you locate, predict, prevent and troubleshoot problems in power distribution systems. These easy-to-use handheld tools have many innovative features to give you the details to pinpoint problems faster and safer.

CAT IV 600 V and CAT III 1000 V safety rating
Designed to help protect you and your equipment against electrical shock and fire, the Fluke 430 Series analyzers, accessories and charger are all certified to meet the stringent safety standards for use in CAT IV 600 V and CAT III 1000 V environments. They are the first tools of their kind to carry the CAT IV rating and therefore can be used at virtually all power connections and outlets in a low-voltage power distribution systems.

Quickly see the trend
Auto Trend feature allows fast insight into changes over time. Every displayed reading is automatically and continuously recorded without having to set thresholds or intervals and without manually starting the process. Quickly view trends for voltage, current, frequency, power, harmonics or flicker on all phases and neutral. Analyze the trends using the cursors and zoom tools — even while background recording continues.

Measures everything
Measure true-rms & peak voltage and current, frequency, dips and swells, transients, interruptions, power and power consumption, peak demand harmonics, inter-harmonics, flicker and unbalance.

Automatic transient display
Every time an event or distortion on voltage is detected, the instrument triggers and automatically stores voltage and current waveforms on all three phases and neutral. The analyzer will also trigger when a certain current value level is exceeded. Up to 40 dips, swells, interruptions and transients can be captured this way. You can see voltage transients as high as 6 kV and as fast as 5 microseconds.

System-Monitor: Multi-parameter power
quality health check on one display A single push of the MONITOR button delivers a single dashboard display of rms voltage, harmonics, flicker, interruptions, rapid voltage changes, swells, unbalance and frequency. The dashboard is updated live, showing compliance of each parameter to EN50160 limits or your own limits. Color-coded bars clearly show which parameters are inside (pass) or outside limits (fail). During a Monitor session, you can easily drill down to more detail of any parameter and view and capture its trends for a report.

Extensive data analysis possibilities
The Fluke 434/003 provides three ways to analyze measurements. Cursors and zoom tools can be used 'live' while taking measurements or 'off line' on stored measurement data. The stored measurements can also be transferred to a PC with FlukeView® software. The software's 'view' mode allows cursors and zoom tools to be used on stored measurements. Perform custom analysis and create reports, measurement data can also be exported to common spreadsheet programs. Store up to 10 measurement datasets, each dataset can contain up to 32 parameters and up to 50 screens for use in reports.

Thanks to thoughtful features like user-friendly menus in local languages and setups with minimal steps. The high-resolution color screen updates every 200 mS and displays waveforms and wiring diagrams color coded to industry standards. Handy on-screen wiring diagrams for all commonly used three phase and single phase configurations guide you through connections.

Feature Fluke 434



4 voltage and 4 current
(for 3 phases and ground)


Vrms, Arms, Hz, W, VAR, VA, PF, Cos, Crest Factors

Harmonics and THD (V,A,W), k-factor

kWh and kVARh (forward and reverse), kVAH, demand interval

Flicker (Plt, Pst, PF5)
Real time scope/Phasor diagrams
Dips and swells/half cycle based
Transient display
Inrush Current
FlukeView software and interface cable
Safety rating
(Meets FN61010 European standards)
CAT IV 600 V/CAT III 1000V
Battery life Up to 7 Hours/charge

* Optional functionality can be added with upgrade kit.

Ordering Information
Model Description Buy Online Price
434003 Fluke 434/003 Three-Phase Power Quality Analyzer Discontinued
See: 434-II
Discontinued Models
434BASIC Fluke 434/BASIC Power Quality Analyzer 3 Phase, with NO current probes Discontinued
See: 434-II/BASIC
Included Accessories
  Fluke 434 Included Accessories:
  • 1 - C430 Hard carrying case with clamp holders
  • 4 - i400s current clamps
  • 1 - TLS430 Test leads and alligator clip set
    (4 black, 1 green)
  • 1 - BP190 NiMH Battery pack (installed)
  • 1 - BC430 Battery charger/line voltage adapter
  • 1 - SW43W FlukeView software
  • 1 - OC4USB Serial Interface adapter/cable (USB)
  • 1 - WC100 Color localization set
  • 1 - Getting Started (printed)
  • 1 - User Manual (CD-ROM)


Optional Accessories
Test Leads, Probes and Clips
MFR ID: 2157713
Fluke TLS430 Test Leads and Alligator Clips (4 Black/1 Green) Buy Now Sale $106.59
(Reg. $129.99)
MFR ID: 1610159
Fluke AC285 SureGrip Large Alligator Clips, (one red, one black) Buy Now Sale $20.24
(Reg. $24.99)
Cases and Holsters
MFR ID: 2091049
Fluke C1600 Hard Case Gear Box, for Meters and Accessories Buy Now Sale $61.95
(Reg. $69.99)
Current Clamps
MFR ID: 1568487
Fluke i1000s 1000 Amp AC Current Clamp Buy Now Sale $517.49
(Reg. $574.99)
I2000 FLEX
MFR ID: 2584912
Fluke I2000 FLEX 2000A AC Flexible Current Clamp Buy Now Sale $359.99
(Reg. $399.99)
MFR ID: 664755
Fluke I200 200A AC Current Clamp Buy Now Sale $129.59
(Reg. $159.99)
MFR ID: 657202
Fluke i3000s 3000A AC iFlex Flexible Current Probe Buy Now Sale $562.49
(Reg. $624.99)
I430FLEX Fluke i430-Flex 3000A AC Flex Current Probe Discontinued
i430FLEX4PK Fluke i430-Flex-4PK 3000A AC Flex Current Probes (4 Pack) Discontinued
See: I430-FLEXI-TF-4PK
MFR ID: 2457508
Fluke I5SPQ3 5A AC Current Probe 3 Pack for 430 series Buy Now $1,299.99
Cables & Hardware
MFR ID: 2166266
Fluke OC4USB Optically Isolated Serial to USB Interface Cable Buy Now Sale $165.99
(Reg. $199.99)
PAC91 Fluke PAC91 Print Adapter Cable Discontinued
MFR ID: 2098595
Fluke L206 Deluxe LED Hat Light with 3 Bright White LEDs Buy Now Sale $39.49
(Reg. $49.99)
Other Accessories
MFR ID: 2157607
Fluke WC100 Color Localization Set Buy Now Sale $34.79
(Reg. $39.99)