Fluke 434-II Three-Phase Energy Analyzer


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Fluke 434-II Three-Phase Energy Analyzer

434 Series II Energy Analyzer

The Fluke 434 Series II Energy Analyzer is the ideal tool for energy logging. Utilizing the new Energy Loss Calculator function, the 434 II mea-sures the fiscal cost of energy wasted due to poor power quality. This energy monetization capability identifies the most energy-wasteful areas of your facility, enabling you to identify energy saving solutions. Add basic power quality measurements to the package and you’ve got yourself one powerful troubleshooting tool.

More detailed power quality analysis capability, and a new Fluke-patented energy monetization function

The new 430 Series II Power Quality and Energy Analyzers offer the best in power quality analysis and introduce, for the first time ever, the ability to monetarily quantify energy losses.

The new Fluke 434, 435 and 437 Series II models help locate, predict, prevent, and trouble-shoot power quality problems in three-phase 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.

Unified Power Measurement

Fluke’s patented Unified Power Measurement sys-tem (UPM) provides the most comprehensive view of power available, measuring:

  • Parameters of Classical Power (Steinmetz 1897) and IEEE 1459-2000 Power
  • Detailed Loss Analysis
  • Unbalance Analysis

These UPM calculations are used to quantify the fiscal cost of energy loss caused by power quality issues. The calculations are computed, along with other facility-specific information, by an Energy Loss Calculator that ultimately determines how much money a facility loses due to wasted energy.



Technical Data
Voltage inputs
Number of inputs 4 (3 phase + neutral) dc-coupled
Maximum input voltage 1000 Vrms
Nominal voltage range Selectable 1 V to 1000 V
Max. peak measurement voltage 6 kV (transient mode only)
Input impedance 4 MΩ//5 pF
Bandwidth > 10 kHz, up to 100 kHz for transient mode
Scaling 1:1, 10:1, 100:1, 1,000:1 10,000:1 and variable
Current inputs
Number of inputs 4 (3 phase + neutral) dc- or ac-coupled
Type Clamp or current transformer with mV output or i430flex-TF
Range 0.5 Arms to 600 Arms with included i430flex-TF (with sensitivity 10x)
5 Arms to 6000 Arms with included i430flex-TF (with sensitivity 1x)
0.1 mV/A to 1 V/A and custom for use with optional ac or dc clamps
Input impedance 1 MΩ
Bandwidth > 10 kHz
Scaling 1:1, 10:1, 100:1, 1,000:1 10,000:1 and variable
Sampling system
Resolution 16 bit analog to digital converter on 8 channels
Maximum sampling speed 200 kS/s on each channel simultaneously
RMS sampling 5000 samples on 10/12 cycles according to IEC61000-4-30
PLL synchronization 4096 samples on 10/12 cycles according to IEC61000-4-7
Nominal frequency 434-II and 435-II: 50 Hz and 60 Hz
437-II: 50 Hz, 60 Hz and 400 Hz
Display modes
Waveform display Available in all modes via SCOPE key
435-II and 437-II: Default display mode for Transients function
Update rate 5x per second
Displays 4 cycles of waveform data on screen, up to 4 waveforms simultaneously
Phasor diagram Available in all modes via Scope waveform display
Default view for Unbalance mode
Meter readings Available in all modes except Monitor and Transients, provides tabulated view of all available readings
Fully customizable up to 150 readings for Logger mode
Trend graph Available in all modes except Transients
Single vertical cursor with min max and avg reading at cursor position
Bar graph Provides 50/60** cycles of waveform information and associated 1/2 cycle rms values 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, Vpeak, V Crest Factor, Arms Apeak, A Crest Factor, Hz
Dips and swells Vrms½, Arms½, Pinst with programmable threshold levels for event detection
Harmonics dc, 1 to 50, up to 9th harmonic for 400 Hz Harmonics Volts, THD, Harmonic Amps, K factor Amps, Harmonic Watts, THd Watts, K factor Watts, Interharmonic
Volts, Interharmonic Amps, Vrms, Arms (relative to fundamental or to total rms)
Power and energy Vrms, Arms, Wfull, Wfund., VAfull, VAfund., VAharmonics, VAunbalance, var, PF, DPF, CosQ, Efficiency factor, Wforward, Wreverse
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 (requires optional dc current clamp) Wfull, Wfund, Wdc, Efficiency, Vdc, Adc, Vrms, Arms, Hz
Unbalance Vneg%, Vzero%, Aneg%, Azero%, Vfund, Afund, V phase angles, A phase angles
Inrush Inrush current, Inrush duration, Arms½, Vrms½
Monitor Vrms, Arms, harmonic Volts, THD Volts, PLT, Vrms½, Arms½, Hz, dips, swells, interruptions, rapid voltage changes, unbalance and mains signalling.
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 (435-II and 437-II only) Pst(1min), Pst, Plt, Pinst, Vrms ½, Arms ½, Hz
Transients (435-II and 437-II only) Transient waveforms 4x Voltage 4x Amps, triggers: Vrms ½, Arms ½, Pinst
Mains Signaling (435-II and 437-II only) Relative signaling voltage and absolute signaling voltage averaged over three seconds for up to two selectable signaling frequencies
Power Wave (435-II and 437-II only) Vrms½, Arms½ W, Hz and scope waveforms for voltage amps and watts
Logger Custom selection of 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 IP51 according to IEC60529 when used in tilt stand position
Shock and vibration Shock 30 g, vibration: 3 g sinusoid, random 0.03 g 2 /Hz according to MIL-PRF-28800F Class 2
Display Brightness: 200 cd/m 2 typ. using power adapter, 90 cd/m 2 typical using battery power
Size: 127 mm x 88 mm (153 mm/6.0 in diagonal) LCD
Resolution: 320 x 240 pixels
Contrast and brightness: user-adjustable, temperature compensated
Memory 8GB SD card (SDHC compliant, FAT32 formatted) standard, upto 32GB optionally
Screen save and multiple data memories for storing data including recordings (dependent on memory size)
Real-time clock Time and date stamp for Trend mode, Transient display, System Monitor and event capture
Operating temperature 0 °C ~ +40 °C; +40 °C ~ +50 °C excl. battery
Storage temperature -20 °C ~ +60 °C
Humidity +10 °C ~ +30 °C: 95 % RH non-condensing
+30 °C ~ +40 °C: 75 % RH non-condensing
+40 °C ~ +50 °C: 45 % RH non-condensing
Maximum operating altitude Up to 2,000 m (6666 ft) for CAT IV 600 V, CAT III 1000 V
Up to 3,000 m (10,000 ft) for CAT III 600 V, CAT II 1000 V
Maximum storage altitude 12 km (40,000 ft)
Electro-Magnetic-Compatibility (EMC) EN 61326 (2005-12) for emission and immunity
Interfaces mini-USB-B, Isolated USB port for PC connectivity
SD card slot accessible behind instrument battery
Warranty Three years (parts and labor) on main instrument, one year on accessories
Phase angle Measurement range: -360° … +360°
Included accessories
Power options BC430 Power Adapter
International plug adapter set
BP290 (Single capacity Li-ion battery) 28Wh (7 hours or more)
Leads TL430 Test lead and Alligator clip set
Color coding WC100 color coding clips and regional decals
Flexible current probes i430flex-TF, 24 inch (61cm) length, 4 clamps
Memory, Software and PC connection 8 GB SD card
PowerLog on CD (includes operator manuals in PDF format)
USB cable A-Bmini
Carrying case C1740 Soft Case for 434-II and 435-II
C437 Hard Case with rollers for 437-II
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Product Images (click to enlarge)
  • Fluke 434-II Three-Phase Energy Analyzer