Helios Ventilatoren centrifugal roof fan RDD 315/4 EX

Manufacturer: Helios Ventilatoren
Designation: Centrifugal roof fan 3-PH horizontal, 400V
Type: RDD 315/4 EX
Rated voltage: 400 V
Frequency: 50 Hz
Power consumption: 34 kW
Housing material: Aluminium
Air volume unloaded: 2890 m³/h
Medium temperature: -20...40 °C
Protection class (IP): IP44
Nominal duct diameter: 315 mm
For gas Ex zone: 1, 2
Equipment group according to Directive 94/9/EC: II
Explosion protection category for gas: ATEX
Gas Ex protection, Cat. 2G
Temperature class in accordance with Directive 94/9/EC: T3

Further details: Horizontal discharge roof fan with efficiency-optimised aluminium housing and newly developed high-performance centrifugal impeller, explosion-proof in accordance with ATEX. Housing made of seawater-resistant aluminium with integrated intrusion protection. Motor support plate and base plate made of galvanised steel with aluminium inlet nozzle. Base plate with threaded screw for attaching suction-side accessories (hole pattern to DIN 24155, sheet 3). Protective grille as standard on the outlet side in accordance with DIN EN ISO 13857. High-performance centrifugal impeller with backward curved blades made of aluminium. Dynamically balanced in accordance with DIN ISO 1940-1. Speed-controllable three-phase external rotor motor in enclosed design in IP44. Ball bearings with moisture protection insulation. Maintenance-free and interference-free. Ex version in accordance with ATEX.