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.

Applications

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

Troubleshoot 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: Captures 200 kHz waveform data on all phases simultaneously: Up to 6 kV Fully Class A compliant: Conduct tests according to the stringent international IEC 61000-4-30 Class A standard Measure all three phases and neutral: With included four current probes AutoTrend: Every measurement you see is always 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 included analysis software Logger function: Configure for any test condition with memory for over 400 parameters at user defined intervals Mains signaling: Measure interference from ripple control signals at specific frequencies Battery Life: Seven hours operating time per charge on NiMH battery pack Warranty: Rugged, handheld troubleshooter with Fluke three-year warranty

Technical Data
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
Volt/Amps/Hertz	Vrms (AC + DC)   Measurement range:  1 ... 1000 V Accuracy:  0.1% of Vnom   Vpeak   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   Apeak   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
Harmonics	Harmonic (interharmonic) (n)   Measurement range:  DC, 1..50; (Off, 1..49) measured according to IEC 61000-4-7   Vrms   Measurement range:  0.0 … 1000 V Accuracy:  ±0.05% of nominal voltage   Arms   Measurement range:  0.0 … 4000 mV x clamp scaling Accuracy:  ±5% ± 5 counts   Watts   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   THD   Measurement range:  0.0 … 100.0% Accuracy:  ±2.5% V and A (± 5% Watt)   Hz   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
Flicker	Pst (1 min), Pst, Plt, PF5   Measurement range:  0.00 … 20.00 Accuracy:  ±5%
Unbalance	Volts   Measurement range:  0.0 … 5.0% Accuracy:  ±0.5%   Current   Measurement range:  0.0 … 20% Accuracy:  ± 1%
Transient Capture	Volts   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
Memory	Screens & data:  50, shared memory divided between logging, screens and data sets
Notes	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 ºC to +50 ºC

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	256 x 169 x 64 mm
Weight	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

The Basic models do not include current measuring probes, these must be ordered seperately

IEC 61000-4-30 Class-A Compliance

•	435	434
Measurement algorithms	•	•
Voltage accuracy	0.1% of Vnom	0.5% of Vnom
Time synchronization	optional with GPS430 accessory

Power Quality Analyzer Selection Table

•	435	434
Measures voltage, current, dips, swells, interruptions, harmonics, inter-harmonics, flicker, power, energy, transients, frequency, unbalance, inrush, EN5160 overview	•	•
Logger function with multi-parameter logging	•	optional*
Mains signaling	•	optional*
Memory size	16 MB	8 MB
Current probes	3000 A flexible (4)	40 A/400 A clamp (4)
Carrying case	water-tight hard case with rollers	rugged hard case
Software	Fluke Power Log and FlukeView®	FlukeView®

*Optional functionality can be added with upgrade kit