This document describes the features and characteristics of the PQ3470 3-Phase Power and Harmonics Analyzer produced by Extech Instruments Corporation. The instrument features a large dot-matrix, sun-readable, backlit graphical LCD display and provides a comprehensive system analysis with up to 35 parameters including voltage, current, power, power factor, and more. Users can choose different current clamps and current probes to accommodate different measurement needs. The instrument also has adjustable current transformer CT and potential transformer PT ratios for high power distribution systems. Additionally, it offers functions such as harmonics display, waveform display, peak value display, and total harmonic distortion analysis.