Description
Fluke 434-II Power Quality Analyzer Repair
The Fluke 434-II is a three-phase power quality and energy analyzer — it measures voltage, current, power, harmonics, PQ events, and energy cost across all phases (with flexible current probes) for power-quality surveys and energy studies. Its accuracy depends on the voltage and current measurement inputs, so that’s where service and calibration focus.
June Company repairs and calibrates the Fluke 434-II for power-quality engineers, plant managers, and facility teams.
Common Fluke 434-II problems we fix
- Current-input or probe channel faults — a phase not reading from its flexible probe, repaired so all phases measure.
- Voltage/current readings out of spec — measurement-circuit drift, recalibrated against standards.
- Harmonics / power measurement off — the analysis circuitry, restored.
- Won’t power on or hold a charge — battery and power faults.
- Display or input faults.
FAQs
One phase isn’t reading on my 434-II — fixable? Yes. Input-channel faults are repairable, then all inputs are recalibrated so power, harmonics, and PQ measurements are accurate, with a NIST-traceable certificate.
Are the current inputs verified? Yes — checked against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.







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