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Low pressure axial fans (duct installation)

HRFD 630/8/4

HRFD 630/8/4

High efficiency axial fan 3-ph., pole-switching, Dahlander windings air flow direction "B"

Ref.-No. 00411

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 axial impeller with 5 blades from impact resistant polymers. Dynamically balanced (Class G 6.3 to VDI 2060). Suitable for -30°C to +60°C. Totally enclosed, 3-phase squirrel cage motor, 2-speed (pole switching with Dahlander windings). Maintenance free with low-noise sealed for life ball bearings.

Technical Data

General Information
Ref.-No.:00411
Type:HRFD 630/8/4
Flow rate free-blowing:17730 m³/h
RPM:690/1400 min-1
Number of poles:8 / 4
Voltage:400 / 400 V , 3 W , 50 ph
Rated current (FLC) uncontrolled:1.33/3.7 A
Nominal power:370/1500 W
Max. air flow temperature (uncontrolled):40 °C
IP protection category:55
Insulation class:F
PRODUCT_DETAILPAGE_wheel_diameter:630
Weight:44 kg
Wiring diagram no.:471
Acoustic data
Case breakout 65 dB(A) in 4 m