Description Specifications Frequency: 20 kHz Power: 2000 W Maximum allowable environment temperature: -20 °C to 40 °C Maximum allowable air humidity: less than 70% Maximum electromagnetic interference intensity: less than 120 E Power input standard: single phase AC220V 50 Hz/60 Hz Input power supply voltage fluctuation range: <10% Input power grid harmonic content: <20% Input supply current: <20 A