Fluke Three Phase Power Quality Analyzer

Locate, Predict, Prevent and Troubleshoot Problems in Power Distribution Systems.

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What's special about this Fluke Power Quality Analyzer?

  • Detect and prevent power quality issues before they cause you downtime
  • Quickly diagnose problems on screen to get your operation back up and running as soon as possible
  • Uncover hard to find or intermittent issues
  • Verify electrical system capacity before adding loads
  • All measurements automatically saved to device without setup
  • Conduct tests according to strict international IEC 6100-4-30 Class A standards
  • Click for More Features



DFL-435-003 Fluke Three Phase Power Quality Analyzer
Includes: Hard carrying case with rollers, Four flexible current probes (i430-flex), 5 test leads and clips, Battery charger, FlukeView® software, PowerLog® software, Optical USB cable, Color localization set, Getting Started (printed), User Manual (CD ROM)
2.42 lbs
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  • NiMH battery lasts up to seven hours
  • Conducts test according to the stringent international IEC 6100-4-30 Class A standard
  • Sturdy and durable troubleshooter
  • Amazingly large data memory (16 MB) stores up to 50 screens
  • Analysis software included
  • Up to seven power quality parameters on one screen according to EN50160 power quality standard
  • Designed for electricians, plant technicians working on industrial, healthcare, business and public service settings
  • Three year warranty
  • 3-Phrase logging Power Quality analyzer
  • Troubleshoot in 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 simultaneous up to 6 kV
  • Class-A compliant: Conduct tests according to strict international IEC 6100-4-30 standard
  • Measure all three phases and neutral: 4 current probes included
  • AutoTrend: All measurements are 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 analysis software
  • Logger function: Configure for any test condition with memory for over 400 parameters at use defined intervals
  • Mains signaling: Measure interference from ripple control signals at specific frequencies


For Environmental, Safety, Mechanical & General Specifications, click here

Inputs 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: 0 ... 5.5 kA
Accuracy: 5%

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

Hz 50 Hz nominal
Measurement range: 42.50 ... 57.50 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 ... 10000 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: ± 2.5% V and A (± 5% Watt)

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: -360° ... +360°
Accuracy: ± n x 1.5°

Power and Energy

Watt, VA, VAR
Measurement range: 1.0 ... 20.00MVA ¹
Accuracy: ± 1% ± counts

kWh, kVAh, kVARh
Measurement range: 00.00 ... 200.0 GVAh ¹
Accuracy: ± 1.5% ± 10 counts

Power Factor / Cos Φ / DPF
Measurement range: 0 ... 1
Accuracy: ± 0.03


Pst (1 min), Pst, Plt, PF5
Measurement range: 0.00 ... 20.00
Accuracy: ± 5%


Measurement range: 0.0 ... 5.0%
Accuracy: ± 0.5%

Measurement range: 0.0 ... 20%
Accuracy: ± 1%

Transient Capture

Measurement range: ± 6000 V
Accuracy: ± 2.5% of Vrms
Minimum detect duration: 5 µs (200kS/s sampling)

Inrush mode

Arms (AC+DC)
Measurement range: 0.000 ... 20.00 kA ¹
Accuracy: ± 1% of meas ± 5 counts

Inrush duration (selectable)
Measurement range: 7.5 s ... 30 min
Accuracy: ± 20 ms (Fnom = 50 Hz)

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, shard 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.

The advanced functions Interharmonics, Energy, Transients and Inrush are optional for the Fluke 434 and standard available on the Fluke 435.


Environmental Specifications
Operating Temperature 0° C to + 50° C


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


Mechanical & General Specifications
Size 10.08" x 6.65" x 2.52"
[256 mm x 169 mm x 64 mm]
Weight 2.42 lbs [1.1 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
Case Rugged, shock proof with integrated protective holster, IP51 (drip and dust proof)
Warranty 3 years

Manuals and Guides






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