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Fluke 435 Series II Power Quality and Energy Analyzer

Fluke 434/PWR Three Phase Power Analyzer

434/PWR Power Analyzer

The easy way to perform energy consumption studies

The Fluke 434/PWR power analyzer is the ideal tool for finding energy waste in commercial and factory buildings and equipment. Electricians, field service engineers and maintenance technicians can use this special edition instrument to conduct energy consumption studies and electrical load analysis, and to perform power quality logging and analysis according to EN 50160. Fluke’s 434/PWR is a complete three-phase troubleshooting tool that measures virtually every power system parameter: voltage, current, frequency, power, energy consumption, cos f or power factor, unbalance, and harmonics and inter-harmonics.

Load studies and energy assessments

  • Monitor maximum power demand over user-defined averaging periods
  • Demonstrate the benefit of efficiency improvements with energy consumption tests
  • Measure harmonic distortion caused by electronic loads
  • Analyze reliability problems by capturing voltage dips and swells from load switching

cat3-1000/cat4-600 certified

  • Captures events like dips and swells, interruptions and rapid voltage changes, based upon ½ cycle rms values
  • Unique AutoTrend gives you fast insight into changes over time
  • With a single push of a button, the unique System Monitor gives you an overview of power system performance. It also checks that incoming power complies to EN50160 limits or to your own custom specifications
  • Logger: detailed, user-configurable long-term recording gives you the MIN, MAX and AVG readings of up to 100 parameters on all four phases. Averaging time can be selected down to 0.5 seconds (or 1 minute for 1 day’s recording, 10 minutes for 1 week, 30 minutes for 1 month or more
  • Two groups of four channels: simultaneously measure voltage and current on all three phases and neutral
  • Auto Scaling: easier trend analysis with automatic scaling of the vertical axis – so you will always view the waveforms on a full display
  • Meets the stringent 600 V CAT IV, 1000 V CAT III safety standard required for measurements at service entrance
  • Extensive data analysis: cursors and zoom can be used ‘live’ while taking the measurements, or ‘offline’ on stored measurement data. The stored measurements can also be transferred to Power Log software

Analyze every parameter on display

Measure and record power (W), VA and VARs. The Fluke 434/PWR adds the ability to record energy consumption

Logging function allows you to customize measurement selections and provides analysis of user-selectable parameters to find intermittent problems or relate PQ issues to other phenomena/events.

The System-Monitor overview screen gives instant insight into whether the voltage, harmonics, frequency, and the number of dips and swells fall outside the set limits.

Phasor diagram shows voltage and current unbalance, and helps verify connections


The full color display allows the use of industry-standard color-coding (user selectable) to correlate measurements with actual wiring


Fluke Power Log Software

Designed to quickly view recorded data, the built-in Power Log software displays all recorded parameters on interactive trends. Generate a profes¬sional looking report with the ‘PRINT’ function or copy and paste images into a report document manually. Customize the report generator to easily create your own formats.

Print reports and view graphs with Fuke Power Log sofware

Technical Data
Number:  4 voltage and current (3 phases + neutral)
Maximum voltage:  1000 Vrms (6 kV peak)
Maximum sampling speed:  200 kS/s on each channel simultaneously
Vrms (AC + DC)  
Measurement range:  1 ... 1000 V
Accuracy:  0.1% of Vnom

Measurement range:  1 ... 1400 V
Accuracy:  5% of Vnom

Crest factor, voltage  
Measurement range:  1.0 ... > 2.8
Accuracy:  ±5%

Arms (AC + DC)  
Measurement range:  0 ... 20 kA
Accuracy:  ±0.5% ± 5 counts

Measurement range:  1.4x rms value
Accuracy:  5%

Crest factor, A  
Measurement range:  1 ... 10
Accuracy:  ±5%

Hz 50 Hz nominal  
Measurement range:  40 ... 70 Hz
Accuracy:  ±0.01 Hz
Dips and swells
Vrms (AC+DC) ²  
Measurement range:  0.0% … 100% of Vnom
Accuracy:  ±0.2% of nominal voltage

Arms (AC+DC) ²  
Measurement range:  0 ... 20 kA'
Accuracy:  ±1% ± 5 counts
Harmonic (interharmonic) (n)  
Measurement range:  DC, 1..50; (Off, 1..49) measured according to IEC 61000-4-7

Measurement range:  0.0 … 1000 V
Accuracy:  ±0.05% of nominal voltage

Measurement range:  0.0 … 4000 mV x clamp scaling
Accuracy:  ±5% ± 5 counts

Measurement range:  Depends on clamp scaling and voltage
Accuracy:  ±5% ± n x 2% or reading, ± 10 counts

DC voltage  
Measurement range:  0.0 … 1000 V
Accuracy:  ±0.2% of nominal voltage

Measurement range:  0.0 … 100.0%
Accuracy:  ±2.5% V and A (± 5% Watt)

Measurement range:  0 … 3500 Hz
Accuracy:  ± 1 Hz

Phase angle  
Measurement range:  -360º ... +360º
Accuracy:  ± n × 1.5º
Power and energy
Watt, VA, VAR  
Measurement range:  1.0 … 20.00 MVA¹
Accuracy:  ±1% ± counts

kWh, kVAh, kVARh  
Measurement range:  00.00 …200.0 GVAh¹
Accuracy:  ± 1.5% ± 10 counts

Power Factor/ Cos Ф / DPF  
Measurement range:  0…1
Accuracy:  ± 0.03
Measurement range:  0.0 … 5.0%
Accuracy:  ±0.5%

Measurement range:  0.0 … 20%
Accuracy:  ± 1%
Sampling:  5 readings/sec continuous sampling per channel
Readings:  User selectable up to 100 readings on 3 phases and neutral simultaneously
Averaging:  2hr down to 0.5s user selectable
Memory:  User selectable up to 7MB of shared memory
Recording time:  User selectable, depends on selected number of readings
Zoom:  Yes
Autotrend recording
Sampling:  5 readings/sec continuous sampling per channel
Memory:  1800 min, max and avg points for each reading
Recording time:  Up to 450 days
Zoom:  Up to 12x horizontal zoom
Screens & data:  50, shared memory divided between logging, screens and data sets
¹  Depending on clamp scaling
²  Value is measured over 1 cycle, commencing at a fundamental zero crossing, and refreshed each half-cycle

Environmental Specifications
Operating Temperature
 0 ºC to +50 ºC

Safety Specifications
 EN61010-1 (2nd edition) pollution degree 2; 1000 V CAT III / 600 V CAT IV ANSI/ISA S82.01

Mechanical & General Specifications
 256 x 169 x 64 mm
 2 kg
Battery Life
Rechargeable NiMH pack (installed):  >7 hours
Battery charging time:  4 hours typical
Shock & Vibration
Shock:  30 g
Vibration:  3 g according to MIL-PRF-28800F Class 2
 Rugged, shock proof with integrated protective holster, IP51 (drip and dust proof)
 3 years

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 Fluke 435 Series II Power Quality and Energy Analyzer »
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