EU55is Generator

Noise reduction measures implemented on the new generator include double-layer soundproof construction for the engine compartment and a tri-compartment configuration with separate intake, engine and exhaust compartments for improved cooling and noise reduction, along with a centralized intake and exhaust system for smoother overall air flow, which combine to place the EU55is at the top of its class for low-noise operation. In comparisons of sound power levels under half-load conditions, the EU55is is approximately 3dB(A) quieter than the EX5000 (a comparable liquid-cooled-engine, low-noise generator in the same power output class). It is about 7.5dB(A) lower than the EM55is (an open-style, inverter-equipped generator in the same power output class) under half-load conditions, and approximately 9dB(A) quieter under rated output loads. The EU55is is officially designated as ultra-low-noise construction equipment under Japan's Ministry of Land, Infrastructure, and Transport noise regulations.