Fluke 434, 435 Three-Phase Power Quality Analyzers

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These three-phase power quality meters help you locate, predict, prevent and troubleshoot problems in power distribution systems. These easy-to-use power quality tools are a “must have” for any person who maintains or troubleshoots three phase power. The new IEC Class A standards for flicker and power quality are built right in to take the guess work out of power monitoring.

  • 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


  • Frontline troubleshooting – quickly diagnose problems on-screen to get your operation back online
  • Predictive maintenance – detect and prevent power quality issues before they cause downtime
  • Quality of service compliance – validate incoming power quality at the service entrance
  • Long-term analysis – uncover hard-to-find or intermittent issues
  • Load studies – verify electrical system capacity before adding loads
  • Energy assessments – quantify energy consumption before and after improvements to justify energy saving devices

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.

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)

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 тАФ 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.

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