30KW 1MT0003 Gas Explosion-Proof Motor Noise levels for mains-fed operation The noise levels are measured in accordance with DIN EN ISO 1680 in a anechoic room. It is specified as the A-valued measuring-surface sound pressure level Lpfa in dB (A). This is the spatial mean value of the sound pressure levels measured on the measuring surface. The measuring surface is a cube 1 m away from the motor surface. The sound power level is also specified as LWA in dB (A). Please find the noise value in technical data table, the specified values are only valid for totally enclosed fan cooling (cooling method: IC411) motor with no load at 50 Hz with no load, and the tolerance is +3 dB. While motor operating 60 Hz with no load, the values are approximately +4 dB (A) higher.30KW 1MT0003 Gas Explosion-Proof Motor 1MT0003 Flameproof Three-Phase Asynchronous Motor Rated output:0.55 ~ 315 kW Frame size:80 ~ 355 380/660V 50Hz, Other common voltage can be provide as…