Tenders Are Invited For Delivery Of Energy-Saving Duct Fans

The Subject Of The Order Is The Sale And Delivery By The Contractor Against Payment Of 3 Pieces Of Axial, Electric, Single-Stage Fans, Series 350 With Noise Silencers And Connection Flanges With The Following Parameters: A) Factory Adaptation To The Duct Diameter Of Ø - 400 Mm And Additionally With Flanges Enabling The Installation Of Ducts With A Diameter Of Ø - 500 Mm, B) Nominal Efficiency - Not Less Than 1.4 M3/S, Related To Suction Conditions (84 M3/Min), C) Nominal Total Accumulation Min. 650 Pa, With The Mentioned Efficiency Of 1.4 M3/S And Air Density Of 1.2 Kg/M3, D) Supply Voltage 500 V, E) Engine Power Up To 1.55 Kw, F) Engine Cooled With Air From Outside The Duct, G) Weight Of The Device With The Electric Motor Not More Than 135 Kg, H) Noise Emission Level - With Noise Silencers Not More Than 85 Db, I) Structurally The Fans Must Be Adapted For Series And Parallel Connectionj) The Noise Emission Level Of The Fans Should Be Ensured By The Use Of Noise Silencers, Reducing The Noise Level To A Value Of No More Than 85 Db(A). The Silencers Used Must Be Fully Adapted To Installation On A Specific Type (Model) Of The Fan