The OWH9813 Digital Power Meter is a professional three-phase 3–600 V RMS / 0–20 A RMS power measurement instrument designed for accurate analysis of voltage, current, power, efficiency, and harmonics in industrial, laboratory, and R&D environments. With advanced digital signal processing, harmonic analysis up to the 63rd order, and full SCPI remote control support, the OWH9813 is ideal for both standalone measurements and automated test systems .