Fluke 435 Series II Three-Phase Power Quality and Energy Analysers

Advanced power quality functions, unprecedented energy analysis capability

Think of the Fluke 435 series II Power Quality and Energy Analyser as your insurance policy. No matter what goes wrong in your facility, with the 435 you will always be prepared. Equipped with advanced power quality functions and energy monetization capabilities, there is no electrical issue this model can’t handle.


  • PowerWave data capture – capture fast RMS values to determine voltage, current and frequency interaction
  • Measuring power inverter efficiency
  • Energy monetisation – calculate the fiscal cost of energy waste due to poor power quality
  • Energy assessment – quantify the before and after installation improvements on energy consumption
  • Front line troubleshooting – quickly diagnose problems on-screen to get your operation back on line
  • Predictive maintenance – detect and prevent power quality issues before they cause downtime
  • Long-term analysis – uncover hard-to-find or intermittent issues
  • Load studies – verify electrical system capacity before adding/changing loadings


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The new 430 Series II Power Quality and Energy Analysers offer the best in power quality analysis
and introduce, for the first time ever, the ability to quantify the cost of energy losses.
The new Fluke 435 Series II helps locate, predict, prevent, and troubleshoot power quality problems
in three and single-phase power distribution systems. Additionally, the Fluke-patented energy loss
algorithm, Unified Power Measurement, measures and quantifies energy losses due to harmonics
and unbalance issues, allowing the user to pinpoint the origin of energy waste within a system.

Feature Overview

Simultaneously measure AC O/P power and DC I/P power in power electronics, to determine Power inverter efficiency.
Capture fast RMS data, show half-cycle and waveforms to characterize system dynamics (generator start-ups, UPS etc.).
Classic active and reactive power measurements, unbalance and harmonic power, to pinpoint the fiscal costs of energy loss.
Troubleshoot real-time and analyse the trends using cursors and zoom tools.
600V CAT IV/1000V CAT III rated for use at the service entrance, providing the highest safety rating in the industry:
Measure all three phases and neutral with enhanced thin flexible current probes to fit into the tightest places.
Automatic Trending: Every measurement is always automatically recorded, without any set-up.
Monitor ten power quality parameters on one screen as defined in EN50160 power quality standard.
Configure data logger for any test condition with memory for up to 600 parameters at user set intervals.
View graphs and generate reports using the analysis software included.
Seven hours operating time per charge on the Li-ion battery pack.
Standard compliance to IEC 61000-4-30 Class A
C1740 Soft Case
8GB SD card (32GB max)

(Includes the following accessories TL430 test lead set,4xi430 thin flexi current probes, BP290 battery, BC430 power adapter with international power adapter set, USB cable A-B and CD)


Input characteristics

Four Voltage inputs (3 phase + neutral) DC-coupled
Maximum input voltage 1000Vrms
Nominal voltage range Selectable 1V to 1kV
Maximum peak measurement voltage 6 kV (transient mode only)
Four Current inputs (3 phase + neutral) DC- or AC-coupled
Type Clamp or current transformer with mV output or i430flex-TF
Range 0.5Arms to 600Arms with i430flex-TF (sensitivity 10x), 5Arms to 6000Arms (sensitivity 1x)
0.1mV/A to 1V/A and custom for use with optional AC or DC clamps
Bandwidth >10kHz

Display Modes

Waveform display in all modes via “SCOPE” key
Update rate 5x per second
Displays 4 cycles of waveform data on screen and up to 4 waveforms simultaneously
Phaser diagram available in all modes with Scope waveform display
Default view for Unbalance mode
Meter readings available in all modes except Monitor and Transients
Fully customisable up to 150 readings for Logger mode
Trend graph Available in all modes except Transients
Single vertical cursor with min max and average reading at cursor position
Bar graph Available in Monitor and Harmonics mode
Event list Available in all modes
Provides 50/60 cycles of waveform information and associated 1/2 cycle rms for Volts and Amps

Measurement modes

Scope: 4 voltage waveforms, 4 current waveforms, Vrms, Vfund. Arms, A fund, V @ cursor, A @ cursor, phase angles
Volts/amps/hertz: Vrms phase to phase, Vrms phase to neutral, Vpk, V Crest Factor, Arms Apk, A Crest Factor, Hz
Dips and swells: Vrms½, Arms½, Pinst with programmable threshold levels
Harmonics: DC, 1st to 50th (up to 9th harmonic for 400Hz)
Harmonics: Volts, THD, Harmonic Amps, K factor Amps, Harmonic Watts, THD Watts, K factor Watts,
Inter harmonic Volts, Inter harmonic Amps, Vrms, Arms
Power and energy: Vrms, Arms, Wfull, Wfund., VAfull, VAfund., VAharmonics, VAunbalance, var, PF, DPF, CosQ,
Efficiency factor, Wfwd, Wrev
Energy loss calculator: Wfund, VAharmonics, VAunbalance, var, A, Loss Active, Loss Reactive, Loss Harmonics,
Loss Unbalance, Loss Neutral, Loss Cost (based upon user defined cost / kWh)
Inverter efficiency: Wfull, Wfund, Wdc, Efficiency, Vdc, Adc, Vrms, Arms, Hz (optional DC current clamp)
Unbalance: Vneg%, Vzero%, Aneg%, Azero%, Vfund, Afund, V phase angles, A phase angles
Inrush: current, duration, Arms½, Vrms½
Monitor: All parameters are measured simultaneously in accordance with EN50160,
Flagging is applied according to IEC61000-4-30 to indicate unreliable readings due to dips or swells
Flicker: Pst(1min), Pst, Plt, Pinst, Vrms ½, Arms ½, Hz
Transient waveforms 4x Voltage 4x Amps, triggers: Vrms ½, Arms ½, Pinst
Mains Signalling: Relative signalling voltage and absolute signalling voltage averaged over three seconds for up to two selectable
signalling frequencies
Power Wave:  Vrms½, Arms½ W, Hz and scope waveforms for voltage amps and watts
Logger Custom selection: up to 150 PQ parameters measured simultaneously on 4 phases

General Specifications

Case Design: Rugged, shock proof with integrated protective holster
Drip and dust proof to IP51 according to IEC60529 when used in tilt stand position
Shock and vibration: Shock 30g, vibration 3g sinusoid, random 0.03g2/Hz according to MIL-PRF-28800F Class 2
Display Brightness: 200cd/m2 typ. using power adapter, 90cd/m2 typical using battery power
Size: 127 mm x 88 mm (153 mm/6.0 in diagonal)
LCD Screen Resolution: 320 x 240 pixels
Memory: 8GB SD card (SDHC compliant, FAT32 formatted) standard, up to 32GB option
Real-time clock: Time and date stamp for Trend mode, Transient display, System Monitor and event capture
Operating temperature: 0°C to +40°C; (+40°C to +50°C excluding battery)
Storage temperature: -20°C to +60°C
Humidity: +10°C to +30°C: 95% RH non-condensing, +30°C to +40°C: 75% RH non-condensing, +40°C to +50°C: 45% RH non-condensing
Maximum operating altitude: Up to 2km (6666ft) CAT IV 600V, CAT III 1000V, Up to 3km (10000ft) CAT III 600V, CAT II 1000V
Maximum storage altitude: 12km (40,000ft)
EMC: EN61326 for emission and immunity
Interfaces: USB mini, USB B, Isolated USB port for PC connectivity



Click the link above to download the Fluke 435 datasheet
For more information, please contact Power and Energy Monitors directly

To purchase or hire this product, please click on the link