Extech PQ3470 3-Phase Graphical Power & Harmonics Analyzer


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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


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