Quantity: 5 complete packages. Operating principle: oil-free positive displacement blower with three-lobe rotors. Medium: atmospheric air. Electric motor: WEG, 55 kW per package. Power supply: three-phase, 400 V, 50 Hz. Motor: 4-pole, approximately 1,480 rpm. Efficiency class: IE3. Motor protection: IP55. Insulation class: F. Motor mounting: B3. Belt drive with belts, pulleys and transmission guard. Integrated baseframe with discharge silencer. Inlet filter silencer. Non-return valve and overpressure relief valve. Stainless steel acoustic enclosure with rain hoods and ventilation. Motor heater: 230 V. IFM switch kit. Discharge pressure gauge and vacuum gauge for filter monitoring. Design duty points according to the documentation – per blower 2,150 Nm³/h at 375 mbar gauge pressure. 1,760 Nm³/h at 375 mbar gauge pressure. 1,460 Nm³/h at 570 mbar gauge pressure. 1,205 Nm³/h at 570 mbar gauge pressure.