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Low pressure axial fans (duct installation)

HRFD 500/4

HRFD 500/4

High efficiency axial fan 3-ph. speed controllable

Ref.-No. 00233

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.:00233
Type:HRFD 500/4
Flow rate free-blowing:8200 m³/h
Speed control:TRAFO / FREQUENCY
RPM:1343 min-1
Number of poles:4
Voltage:400 V , 3 W , 50 ph
Rated current (FLC) uncontrolled:1.22 A
Nominal power:620 W
Max. air flow temperature (uncontrolled):40 °C
IP protection category:55
Insulation class:B
PRODUCT_DETAILPAGE_wheel_diameter:500
Weight:22 kg
Wiring diagram no.:469
Acoustic data
Case breakout 61 dB(A) in 4 m