The Fluke 435-II is a three-phase power quality and energy analyzer that identifies, predicts, and troubleshoots power quality issues across three-phase and single-phase distribution systems. It delivers advanced power quality measurements and energy monetization capabilities for rapid electrical diagnostics, system performance improvement, and electrical reliability verification. Designed for industrial maintenance, utilities, and electrical contracting applications.
Technical Specifications
Power Quality Standards
• IEC 61000-4-30 Edition 2 Class-A compliant for consistent measurement accuracy
Measurement Scope
• Voltage, current, dips, swells, interruptions
• Harmonics up to the 50th order plus inter-harmonics
• Flicker, mains signaling, inrush, unbalance, frequency, power, energy, and transients
• Fast RMS data, half-cycle, and full waveforms via PowerWave data capture
• Automatic Transient Mode: 200 kHz simultaneous waveform capture on all phases up to 6 kV
• Ripple control signal interference measurement at mains signaling frequencies
• AC output and DC input power measurement for power electronics systems (optional DC clamp)
Energy and Power Analysis
• Energy Loss Calculator quantifies active power, reactive power, unbalance, and harmonic power losses in monetary values
• Unified Power Measurement (UPM) combines Classical Power and IEEE 1459-2000 parameters
• Automatic trending of voltage, current, frequency, power, and harmonics across all three phases plus neutral
• System-Monitor displays ten power quality parameters per EN50160 standard
Data Logging & Waveform Capture
• Logger records up to 600 user-defined parameters at configurable intervals
• MIN, MAX, AVG trending for up to 150 parameters across all four phases
• 100/120 cycle event capture (50/60 Hz) without manual setup
• Three-phase high-resolution voltage and current waveform capture up to five minutes
Battery Performance
• Li-ion battery: 7 to 8 hours operating time per charge
– Key Features
• Class-A power quality compliance for industrial-grade measurement confidence
• Automatic data capture eliminates manual logging configuration
• Harmonic analysis to the 50th order characterizes non-linear load signatures
• Transient recording captures generator start-ups, UPS switching, and inrush events
• Multi-currency energy loss reporting for cost-benefit analysis
– Typical Applications
• Industrial facility power quality audits and troubleshooting
• Utility distribution system compliance monitoring
• Electrical contractor field diagnostics
• Power electronics efficiency measurement and verification
• Long-term power quality trending and baseline establishment
– Compatibility & Integration
• Optional DC clamp enables power inverter efficiency analysis
• Supports 50 Hz and 60 Hz mains operation
