Fluke 434-II Three Phase Power Quality Energy Analyzer 600 V CAT IV IEC 61000-4

The Fluke 434-II is part of the 430 Series II family of three-phase power quality and energy analyzers. It helps plant engineers, electrical contractors and facility managers locate, predict, prevent and troubleshoot power quality problems in three-phase and single-phase power distribution systems, from the service entrance down to the individual load.
Built on Fluke's patented Unified Power Measurement (UPM) method, the 434-II goes beyond conventional power measurement. It separates the energy wasted by harmonics, by unbalance and by reactive power, then converts that waste into real money through the Energy Loss Calculator — so an energy saving project can be justified with a hard return-on-investment figure instead of an estimate.

• Unified Power Measurement (UPM): simultaneous measurement of classical power parameters (Steinmetz), IEEE 1459-2000 power values, detailed loss analysis and unbalance analysis.
• Energy Loss Calculator: quantifies unusable power caused by harmonics and unbalance and totals the fiscal cost of wasted kWh using a user-defined cost per kWh.
• Power Inverter Efficiency: simultaneously measures AC output power and DC input power with an optional DC current clamp, giving direct efficiency readings for inverters and drive systems.
• Energy and power measurement: Vrms, Arms, Wfull, Wfund, VAfull, VAfund, VAharmonics, VAunbalance, var, PF, DPF, Cosφ, forward and reverse energy.
• Harmonics analysis: DC and harmonics 1 to 50 with IEC 61000-4-7 grouping, inter-harmonics, THD on volts, amps and watts, plus K factor.
• Unbalance analysis: negative and zero sequence voltage and current percentages with phase angle display and phasor diagram.
• Automatic Trending and Logger: every displayed measurement is recorded automatically without setup; up to 150 PQ parameters can be logged at user-defined intervals, with recording times from 1 hour up to 1 year.
• Dips, swells and inrush: half-cycle Vrms and Arms event detection with programmable thresholds and inrush current duration capture.
• System Monitor: ten power quality parameters on a single screen evaluated against the EN50160 power quality standard, with IEC 61000-4-30 flagging of unreliable readings.
• Highest safety rating in the industry: 600 V CAT IV / 1000 V CAT III rated for use at the service entrance.
• Four flexible current probes: i430-Flexi-TF thin flex probes supplied as standard, fitting into the tightest cable trays and switchgear compartments, covering 0.5 A to 6000 A.
• Up to 8 hours of operation per charge on the BP290 Li-ion battery pack, with 8 GB SD card memory and PowerLog analysis software for graphs and reports.

1φ + neutral, 1φ split phase, 1φ IT without neutral, 3φ Wye, 3φ Delta, 3φ IT, 3φ high leg, 3φ open leg, 2-element and 2½-element systems, plus inverter efficiency measurement.

• Energy audits and power quality surveys at the service entrance
• Harmonic and unbalance studies on three-phase distribution systems
• Energy waste quantification and return-on-investment justification for filter and balancing projects
• Front-end troubleshooting of nuisance tripping, transformer overheating and equipment failures
• Inverter and variable speed drive efficiency verification
• EN50160 compliance monitoring and long-term logger studies

TL430 test lead and alligator clip set, 4 x i430-Flexi-TF thin flexible current probes (61 cm), BP290 Li-ion battery, BC430 power adapter with international plug adapter set, WC100 colour coding clips and regional decals, 8 GB SD card, USB cable A-B mini, PowerLog software CD, C1740 soft carrying case.

i430-Flexi-TF-4PK 6000 A flexi probe 4 pack, i5sPQ3 5 A AC current clamps (3 pack), i400s AC current clamp, GPS430-II time synchronisation module, BP291 double capacity battery (up to 16 hours), HH290 hanging hook, C437-II hard case with rollers.