RDD 250/4 EX
RDD 250/4 EX
Centrifugal roof fan, horizontal discharge 3-PH, 400 V,4-pole Explosion-proof
Ref.-No. 07273
Features
Horizontal discharge roof fan with efficiency-optimised aluminium casing and newly developed high-performance centrifugal impeller, explosion-proof according to ATEX. Casing made of seawater-resistant aluminium with integrated anti-intrusion protection. Motor support plate and base plate made of galvanised steel with inlet nozzle made of aluminium. Base plate with threaded screw for fastening accessories on the intake side (hole pattern according to DIN 24155, sheet 3). Protective grille on the discharge side as standard according to DIN EN ISO 13857. High efficiency backward curved centrifugal impeller made from aluminium. Dynamically balanced to DIN ISO 1940-1. Totally enclosed speed controllable 3 ph. external rotor motor IP 44. Ball bearing mounted with moisture protection. Maintenance-free and interference-free. Explosion-proof version according to ATEX.Additional data and accessories
Technical Data
General Information
| Ref.-No.: | 07273 |
|---|---|
| Type: | RDD 250/4 EX |
| Flow rate free-blowing: | 1350 m³/h |
| Speed control: | TRAFO |
| RPM: | 1400 min-1 |
| Number of poles: | 4 |
| Voltage: | 400 V , 3 ph , 50 Hz |
| Rated current (FLC) uncontrolled: | 0.38 A |
| Max. air flow temperature (uncontrolled): | 40 °C |
| Explosion proof: | |
| IP protection category: | 44 |
| PRODUCT_DETAILPAGE_wheel_diameter: | 250 mm |
| Weight: | 12 kg |
| Wiring diagram no.: | 1156 |