Extech PQ3450
3-Phase Power Analyzer/Datalogger

  • Large dot-matrix, sun-readable, numerical, backlit LCD with easy-to-use onscreen menu
  • Full system analysis with up to 35 parameters:
    • V (phase-to-phase), V (phase-to-ground)
    • A (phase-to-ground)
    • KW / KVA / KVAR / PF (phase)
    • KW / KVA / KVAR / PF (system)
    • KWH / KVAH / KVARH / PFH (system)
    • Phase angle
  • Optional 200A, 1200A Current Clamps or 3000A Flexible Current Probes (sold separately)
  • Adjustable Current Transformer CT (1 to 600) and Potential Transformer PT (1 to 1000) ratio for high power distribution systems
  • Log up to 30,000 reading on a removable SD memory card in Microsoft Excel format
  • Wide sampling rate range (2 seconds to 2 hours)
  • Built-in Clock and Calendar
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Extech PQ3450 Shown

Product Information
Datasheet 388 KB PDF
Manual 713 KB PDF
PDF HelpPDF Help
Circuit Custom single-chip microprocessor LSI circuit
Display LCD Size: 81.4 X 61 mm (3.2 X 2.4”)
Dot Matrix backlit LCD (320 X 240 pixels)
Measurements V (voltage phase to phase)
V (voltage phase to ground)
A (Current Phase to ground)
KW / KVA/ KVAR / PF (Phase)
KW / KVA/ KVAR / PF (System)
Power factor
Phase angle
Wire configurations 1P/2W, 1P/3W, 3P/3W, 3P/4W
Voltage ranges 10 ACV to 600 ACV (Auto Range)
Current ranges Current probe input signal voltage (ACV):
200mV /300mV /500mV /1V /2V /3V
Current probe input current range (ACA):
Note that the meter has universal probe compatibility
Safety standard IEC1010 CAT III 600 V
ACV input impedance 10M ohms
Range select ACV - Auto Range
ACA - Manual Range
Clamp frequency response 40 Hz to 1 KHz
Over-load protection ACV: 720 ACV RMS
Over-range "OL" is displayed; Data on SD card will read
‘9999’ or ‘999’ for over-range data
Under-range "UR" is displayed
Data Hold Freezes displayed reading
Data Recording SD memory card
Sampling Time Approx. 1 second
Datalogger Real time data logger saves data to SD memory card
for download to PC (data files open directly to spreadsheet)
Sampling rate: From 2 seconds to 7200 seconds
Data Output RS232 port
Operating Temperature 0 to 50°C (32 to 122°F)
Operating Relative Humidity 80% Relative Humidity max.
Power Supply Eight (8) ‘AA’ 1.5VDC batteries or AC 9V power adapter
Power Consumption Meter: 270 mA DC; Clamp: 22 mA DC
Ordering Information
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Included Accessories
  • 8 - AA batteries
  • 4 - Voltage leads with alligator clips
  • 1 - SD card
  • 1 - 100-240V AC adaptor
  • 1 - Case
Optional Accessories
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*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.