SKRD 450/4/70/40 – Helios – InlineVent – Rectangular Fan Acoustically Lined With Backward Curved Impeller
Rectangular-centrifugal fan, noise reduced design, for direct installation in rectangular duct system. Fan with swing out motor and impeller unit.
Casing made from galvanised steel and flanged on both ends, compact design, casing acoustically lined with 50 mm thick mineral fibreboard. Service friendly (cleaning) through swing out motor and impeller unit.
Highly efficient centrifugal impeller with backward curved blades from impact resistant polymers and galvanised steel. Dynamically balanced (Class G 6.3 to VDI 2060 and ISO 1940).
Totally enclosed, 3-phase external rotor motor with thermal contacts wired to the terminal block. Speed control by use of a 5-step transformer controller or an electronic controller (stepless) as well as with a Helios frequency inverter and sinus filter on all poles Maintenance free, low-noise sealed for life ball bearings, tropical protection of windings. Mains supply via pre-assembled terminal box (IP 55).