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Fluke 435
3-Phase Logging Power Quality Analyzer
See: Fluke 435-II

  • Troubleshoot real-time:
    Analyze the trends using the cursors and zoom tools-even while background recording continues
  • Highest safety rating in the industry:
    600 V CAT IV/1000 V CAT III rated for use at the service entrance
  • Automatic Transient Mode:
    Capture 200 kHz waveform data on all phases simultaneously up to 6 kV
  • Fully Class-A compliant:
    Conduct tests according to the stringent international IEC 61000-4-30 Class-A standard
  • Measure all three phases and neutral:
    With included four current probes
  • AutoTrend:
    Every measurement you see is always automatically recorded, without any setup
  • System-Monitor:
    Up to seven power quality parameters on one screen according to EN50160 power quality standard
  • Inrush mode:
  • For troubleshooting nuisance circuit breaker tripping
  • View graphs and generate reports:
    With included analysis software
  • Logger function:
    Configure for any test condition with memory for over 400 parameters at user defined intervals
  • Mains signaling:
    Measure interference from ripple control signals at specific frequencies
  • Battery Life:

  • Seven hours operating time per charge on NiMH battery pack
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Fluke 435 Shown

Product Information

Tech Notes 2.7 MB Click on the link to open the PDF in a new window
Virtual Demo Flash
Download Demo 2.6 MB EXE
Ordering Info Jump to Product Models, Prices, Accessories, and Ordering Information
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The Fluke 434 and Fluke 435 three-phase power quality analyzers help you locate, predict, prevent and troubleshoot problems in three- and single-phase power distribution systems. Troubleshooting is faster with on-screen display of trends and captured events, even while background recording continues. The new IEC standards for flicker, harmonics and power quality are built right in to take the guess work out of power quality.

CAT IV 600 V and CAT III 1000 V safety rating
Designed to help protect you and your equip-ment, the Fluke 434 and the Fluke 435 analyzers and accessories are all certified to meet the stringent 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 for use in power connections and outlets throughout a low-voltage power distribution system.

Troubleshoot real-time
AutoTrend feature provides fast insight into changes over time. Every displayed reading is automatically recorded without having to set thresholds or intervals. Analyze the trends using the cursors and zoom tools—even while back-ground recording continues.

Fully Class-A compliant
The Fluke 435 is fully compliant with the new IEC 61000-4-30 Class-A standard. With this powerful capability, all measurements will be consistent and reliable in accordance with the latest international standard.

Measures everything
Measure true-rms and peak voltage and cur-rent, frequency, dips and swells, transients, interruptions, power and power consumption, peak demand, harmonics up to the 50th, inter-harmonics, flicker, mains signaling, inrush and unbalance.

Logger: record the detail you need
User-configurable, long-term recording of MIN, MAX and AVG readings for up to 100 parameters on all 4 phases. Enough memory is available to record 400 parameters for up to a month with 10 minute resolution, or capture smaller variations with resolution down to 0.5 seconds.

Automatic transient display
Every time an event or voltage distortion 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 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.

Summary screen of overall power quality health A single push of the MONITOR button delivers a dashboard display of rms voltage, harmonics, flicker, interruptions, rapid voltage changes, swells, unbalance, frequency and mains signaling. 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 to view and capture its trend for a report.

Extensive data analysis possibilities
The Fluke 433, Fluke 434 and Fluke 435 provide three ways to analyze measurements. Cursors and zoom tools can be used 'live' while taking measurements, or 'off line' on stored measurement data. Additionally, the stored measurements can be transferred to a PC with the included software to perform custom analysis and create reports. Measurement data can also be exported to common spreadsheet programs. Store up to 10 measurement datasets and up to 50 screen captures for use in reports.

Pre-programmed setups and user-friendly screens make power quality testing as simple as you would expect from Fluke. 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.


  Fluke 435 Fluke 434*
Measures voltage, current, dips, swells, interruptions, harmonics, inter-harmonics, flicker, power, energy, transients, frequency, unbalance, inrush, EN50160 overview
Logger function with multi-parameter logging Optional*
Mains signaling Optional*
Memory size 16 MB 8 MB
Current probes 3000A Flexible
40 A/400A
Clamp (4)
Carrying Case water-tight hard
case with rollers
rugged hard case
Software Fluke Power Log
and FlukeView

* Optional functionality can be added with upgrade kit.

Ordering Information
Model Description Buy Online Price
435003 Fluke 435/003 Logging 3-Phase Power Quality Analyzer Discontinued
See: Fluke 435-II
435003U Fluke 435/003 Logging 3-Phase Power Quality Analyzer, Factory Refurbished/Demo with Standard 1 Year Warranty  Please Call
435BASIC Fluke 435/BASIC Power Quality Analyzer 3 Phase, with NO current probes Discontinued
See: Fluke 435-II/BASIC
Included Accessories
  • 1 - Hard Carrying case with rollers
  • 4 - 3000 amp flexible current probes
  • 5 - test leads and clips
  • 1 - Battery charger
  • 1 - FlukeView software
  • 1 - Power Log Software
  • 1 - Optical USB cable
  • 1 - color localization set
  • 1 - getting started Manual
  • 1 - Users Manual on CD ROM


Optional Accessories
MFR ID: 2277202
Fluke i400s 400 Amp AC Current Clamp with BNC. Switchable, 40 Amp & 400 Amp, Ranges Buy Now Sale $260.99
(Reg. $289.99)
MFR ID: 2457508
Fluke I5SPQ3 5A AC Current Probe 3 Pack for 430 series Buy Now $1,299.99
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