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Fluke 435 Series II Power Quality and Energy Analyzer

Fluke 430 Series Three-phase Power Quality Analyzers

 Fluke 430 Series
Pinpoint power quality problems faster, safer and in greater detail

These three-phase power quality meters help you locate, predict, prevent and troubleshoot problems in power distribution systems. These easy-to-use power quality tools are a “must have for any person who maintains or troubleshoots three phase power. The new IEC Class A standards for flicker and power quality are built right in to take the guess work out of power monitoring.


  • Frontline troubleshooting – quickly diagnose problems on-screen to get your operation back online
  • Predictive maintenance – detect and prevent power quality issues before they cause downtime
  • Quality of service compliance – validate incoming power quality at the service entrance
  • Long-term analysis – uncover hard-to-find or intermittent issues
  • Load studies – verify electrical system capacity before adding loads
  • Energy assessments – quantify energy consumption before and after improvements to justify energy saving devices


430 series

  • Complete three-phase troubleshooting tool: measures virtually every power system parameter: voltage, current, frequency, power, power consumption (energy), unbalance and flicker, harmonics and inter-harmonics. Captures events like dips and swells, transients, interruptions and rapid voltage changes.
  • The Fluke 435 features 0.1 percent voltage accuracy making it fully compliant with the IEC 61000-4-30 Class A standard
  • Logger function: record the detail you need. Detailed, user-configurable long-time recording gives you the MIN, MAX and AVG readings of up to 100 parameters on all 4 phases with selectable averaging time down to 0.5 seconds. Enough memory is available to record 400 parameters with 1 minute resolution for up to a month.
  • Four channels: simultaneously measures voltage and current on all three phases and neutral.
  • AutoScaling: easier trend analysis with automatic scaling of the vertical axis you will always use the full display to view the waveforms.
  • Automatic transient display: captures up to 40 dips, swells, interruptions or transients automatically.
  • Meets the stringent 600 V CAT IV, 1000 V CAT III safety standard required for measurements at the service entrance.
  • Rugged, handheld instrument operates for more than 7 hours on included rechargeable NiMH battery pack. Menu-driven interface simplifies operation.
  • Extensive data analysis possibilities. 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 a PC with FlukeView software (included with Fluke 435 and 434).
  • The Fluke 435 comes with Power log software to analyse recorded data and to create reports.
  • Complete package includes everything to get started: 4 current clamps, 4 flex clamps with Fluke 435, 5 voltage test leads and clips, line adapter/battery charger and hard case.
  • Complies with IEC 61000-4-30 measurement standards

AutoTrend - Quickly see the trend
Unique AutoTrend gives you fast insight into changes over time. Every displayed reading is automatically and continuously recorded without having to set up threshold levels or interval times, or having to manually start the process. You can quickly view trends in voltage, current, frequency, power, harmonics or flicker on all three phases plus neutral. And you can analyze the trends using the cursors and zoom function – even while background recording continues.

AutoTrend automatically records all displayed parameters in the background.

SystemMonitor - Check performance against EN50160 with ease
With a single push of a button, the unique System-Monitor gives you an overview of power system performance, and checks the compliance of incoming power to EN50160 limits or to your own custom specifications. The overview is shown on a single screen, with color-coded bars clearly indicating which parameters fall outside the limits.

The System-Monitor overview screen gives instant insight into whether the voltage, harmonics, flicker, frequency and the number of dips and swells fall outside the set limits. A detailed list is given of all events falling outside the set limits.

Logging function allows you to customize measurement selections and provides instantaneous analysis of user-selectable parameters. Measure and record power (W), VA and VARs. The 434 adds the ability to record energy consumption. Track harmonics up to the 50th, and measure and record THD in accordance with IEC61000-4-7 requirements

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:  0 ... 5.5 kA
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
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 kA¹
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, 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
 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
 Rugged, shock proof with integrated protective holster, IP51 (drip and dust proof)
 3 years

Cables and HardwarePrice List
GPS430GPS430 Time Synchronization ModuleOn Request

ClipsPrice List
AC285AC285 SureGrip™ Alligator Clip SetOn Request

Batteries, Chargers and AdaptersPrice List
BC430BC430 Line Voltage Adapter/Battery ChargerOn Request
BP190BP190 Rechargeable NiMH Battery PackOn Request

Cables and HardwarePrice List
PAC91PAC91 Printer Adapter CableOn Request

Current clampsPrice List
i400si400s AC Current ClampOn Request
i5sPQ3i5sPQ3, 5 A ac Current Clamps, 3-packOn Request
i1000si1000s AC Current Clamp (1000 A)On Request
i2000 flexi2000 flex AC Current ClampOn Request
i200si200s AC Current ClampOn Request
i3000si3000s AC Current ClampOn Request
i430-flex-4pki430 Flex 4 PackOn Request
i430-flexi430 Flex Current ClampOn Request

LightsPrice List
L206L206 Deluxe LED Hat LightOn Request

Test Leads, Probes and ClipsPrice List
OC4USBOC4USB USB interface cableOn Request

Test LeadsPrice List
TLS430TLS430 Test Leads and Alligator Clips setOn Request
WC100WC100 Color Localization SetOn Request
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 Fluke 435 Series II Power Quality and Energy Analyzer »
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