The Fluke 345 Power Quality Clamp Meter combines power analysis, quality logging, waveform capture, and current measurement in a single handheld instrument. Built for commissioning and troubleshooting modern electrical systems—VFDs, electronic lighting, and UPS equipment—it delivers non-invasive AC/DC current measurement via Hall Effect clamp technology alongside simultaneous voltage and power analysis. The device integrates a low-pass filter for distorted waveforms, high EMC immunity, and internal memory for extended data logging across multiple power quality parameters.
– Technical Specifications
Current Measurement
• AC Current (RMS): 0–1400 A; ±3% ± 5 counts accuracy
• DC Current: 0–2000 A; ±1.5% ± 5 counts accuracy, 10 mA resolution
• Jaw opening: 60 mm (2.36 in)
Voltage Measurement
• Range: 1–825 V RMS (AC and DC)
• AC/DC accuracy: ±1.5% + 5 digits
• Resolution: 1 mV ac / 1 mV dc
• Maximum working voltage (phase-to-ground): 600 V; (phase-to-phase delta): 825 V
Power Analysis
• Single-phase: 0–1200 kW AC, 0–1650 kW DC
• Three-phase: 4 kW, 40 kW, 400 kW, 1650 kW ranges
• Measures: VA (single and three-phase), VAR (single and three-phase), kWh
• Power factor: 0.3 capacitive to 1.0 to 0.3 inductive; ±3° accuracy
Frequency & Harmonics
• Range: 15 Hz–1 kHz, 0.1 Hz resolution
• Individual harmonics: up to 30th harmonic
• Analyzes Total Harmonic Distortion (THD) and Distortion Factor (DF)
Data Logging & Display
• Logs any power quality parameter over minutes to one month
• Averaging periods: 1 second to 15 minutes
• Three separate memory areas for flexible recording duration
• Color LCD: 320 × 240 pixels (70 mm diagonal) with dual-level backlight
Additional Capabilities
• Inrush current capture: 3–300 second analysis windows
– Key Features
• Non-invasive Hall Effect clamp for live circuit measurement
• Simultaneous AC/DC current, voltage, and power measurements
• Harmonic analysis to 30th order with THD and DF calculation
• Real-time waveform and trend visualization
• Extended internal memory for intermittent fault detection and trend analysis
– Typical Applications
• VFD commissioning and troubleshooting
• Electronic lighting system analysis
• UPS system diagnostics
• Power quality investigations in noisy electrical environments
• Long-term power parameter trending and data collection
– Compatibility & Integration
PC-based data logging supports flexible parameter selection and extended recording beyond onboard memory capacity.
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