RDW 250/4
RDW 250/4
Centrifugal roof fan, horizontal discharge 1-PH,230V,4-pole, AC, speed controllable
Ref.-No. 07264
Features
Centrifugal roof fan with horizontal discharge, with efficiency optimized aluminium casing and new developed high performance centrifugal impeller Casing from seawater-resistant aluminium with integrated protection guard. Motor support and base plate with inlet cone from galvanised steel. Base plate with threaded bolts for connection of intake air accessories (hole pattern to DIN 24155, page 3). Bird guard according to DIN EN ISO 13857 on the outlet as standard. High efficiency backward curved centrifugal impeller made from galvanised sheet steel. Dynamically balanced to DIN ISO 1940-1. Speed controllable, totally enclosed, single phase external rotor motor, protection to IP 44. Ball bearing mounted with impregnated windings. Maintenance free and radio suppressed.Additional data and accessories
Technical Data
General Information
| Ref.-No.: | 07264 |
|---|---|
| Type: | RDW 250/4 |
| Flow rate free-blowing: | 920 m³/h |
| Speed control: | TRAFO / ELECTRIC |
| RPM: | 1340 min-1 |
| Number of poles: | 4 |
| Voltage: | 230 V , 1 W , 50 ph |
| Rated current (FLC) uncontrolled: | 0.28/0.28 A |
| Nominal power: | 63 W |
| Max. air flow temperature (controlled): | 70 °C |
| Max. air flow temperature (uncontrolled): | 70 °C |
| IP protection category: | 44 |
| Insulation class: | F |
| PRODUCT_DETAILPAGE_wheel_diameter: | 250 |
| Weight: | 11.5 kg |
| Wiring diagram no.: | 923 |
Acoustic data
| Case breakout | 41 dB(A) in 4 m |
|---|