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Low pressure axial fans (duct installation)

HRFD 450/4

HRFD 450/4

High efficiency axial fan 3-ph. speed controllable

Ref.-No. 00231

Features

High efficiency axial fan with cylindrical duct with flanges on both ends, directly driven. Cylindrical duct in galvanised sheet steel covering impeller with two flanges on both ends. Dimensions and flange fixing holes to DIN 24155. Terminal box on outer casing. Highly efficient, profiled blade impeller from polymers, aerodynamically optimised to the application, dynamically balanced. Suitable for -30 °C to +60 °C. Totally enclosed 3-phase squirrel cage motor with built-in thermal contacts, maintenance-free, speed controllable by voltage reduction, with low-noise sealed for life ball bearings.

Technical Data

General Information
Ref.-No.:00231
Type:HRFD 450/4
Flow rate free-blowing:5810 m³/h
Speed control:TRAFO / FREQUENCY
RPM:1389 min-1
Number of poles:4
Voltage:400 V , 3 W , 50 ph
Rated current (FLC) uncontrolled:0.81 A
Nominal power:384 W
Max. air flow temperature (controlled):40 °C
Max. air flow temperature (uncontrolled):50 °C
IP protection category:55
Insulation class:B
PRODUCT_DETAILPAGE_wheel_diameter:450
Weight:20 kg
Wiring diagram no.:469
Acoustic data
Case breakout 58 dB(A) in 4 m