Extech PQ3470 3-Phase Graphical Power & Harmonics Analyzer



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  • 600.0V ACV (true rms)
  • 1200A ACA
  • 45 to 65Hz frequency range
  • -180° to +180.0° phase
  • 1 to 50th harmonics
  • 8.86 x 4.92 x 2.52" (225 x 125 x 64mm)
  • Meter: 2.2lbs (1010g); Clamp: 1.1lbs (500g)
  • CE/CAT III-600V

What's in the Box

  • 4 voltage leads with alligator clips
  • 8 AA batteries
  • SD memory card
  • Universal AC adaptor (100 to 240V)
  • Case

The Extech PQ3470 3-phase graphical power & harmonics analyzer can log up to 30,000 readings on a removable SD memory card in Microsoft Excel® format. Captured measurements can be imported directly into Excel via the SD memory card.

This easy-to-hold and easy-to-use analyzer displays harmonics and simultaneously displays waveform with peak values. It features an adjustable current transformer CT (1 to 600) and potential transformer PT (1 to 1000) ratio for high power distribution systems.

Optional 200A, 1200A current clamps or 3000A flexible current probes can be ordered separately.

Extech PQ3470 3-Phase Graphical Power & Harmonics Analyzer Features

  • Large dot-matrix, sun-readable, graphical, backlit LCD
  • Analysis of total harmonic distortion (THD)
  • Graphic phase diagram with 3-phase system parameters
  • 3-phase voltage or current unbalanced ratio (VUR, AUR) and unbalanced factor
  • Capture transient events (including dip, swell, and outage) with programmable threshold (%)
  • Wide sampling rate range (2 seconds to 2 hours)
  • Built-in clock and calendar

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


Extech PQ34-2 Current Clamp Probes
Set of three 200A current clamp probes with 0.8 inch (19mm) jaw opening
Extech PQ34-12 Current Clamp Probes
Set of three 1200A current clamp probes with 2 inch (50mm) jaw opening
Extech PQ34-30 Flexible Current Probes
Set of three 3000A, 24 inch (600mm) flexible current clamp probes for wrapping around busbars

Test Leads

Extech PQ1000 Test Leads
4 voltage test leads with alligator clips