ventilators: östberg: duct fans
Duct fan for rectangular ducts RK Ostberg
Compact duct fans for rectangular ducts
The RK series are duct fans with connection flanges for rectangular ducts. The fans have a compact construction, high efficiency, low noise level and can be installed in any position.
RK fans perform well at high pressure and long channel sections. All fans are supplied factory-wired, with leads routed for connection in the junction box.
The RK fan housing is made of galvanized sheet steel. The rotor is easily extracted thanks to the swing-out mechanism. In the rotor, the blades are tilted forward. Also available in versions with EC motors, which thanks to high efficiency reduce the consumption of electricity.
Available in 24 variants of dimensions and performance.
The most important features:
- compact design and efficiency up to 12,200 m3 / h
- possibility of mounting in any position
- housing made of galvanized sheet steel
- swing-out mechanism – easier revision and cleaning of the rotor
- 24 models to choose from
- the wires are factory-wired to the junction box
- available in version with EC motor
| Model | 400×200 C1 | 400×200 C3 | 500×250 B1 | 500×250 D1 | 500×250 D3 | 500×300 A1 | 500×300 B1 | 500×300 B3 |
| Voltage[V/Hz] | 230/50 | 400/50 | 230/50 | 230/50 | 400/50 | 230/50 | 230/50 | 400/50 |
| Amperage [A] |
0,95 | 0,65 | 0,89 | 2,41 | 0,93 | 1,45 | 3,25 | 1,45 |
| Power [W] | 215 | 375 | 190 | 0,52 | 0,54 | 320 | 0,69 | 0,72 |
| Speed[rpm] | 815 | 1185 | 822 | 1110 | 1270 | 765 | 1275 | 1260 |
| Weight [kg] | 11 | 13 | 16 | 17 | 17 | 19 | 21 | 21 |
| Condenser [μF] | 6 | – | 3 | 8 | – | 5 | 12 | – |
| Klasa izolacji silnika | F | F | F | F | F | F | F | F |
| Protection class | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 |
| Model | 600×300 D1 | 600×300 D3 | 600×300 F1 | 600×300 F3 | 600×350 C1 | 600×350 C3 | 600×350 E1 | 600×350 E3 |
| Voltage[V/Hz] | 230/50 | 400/50 | 230/50 | 400/50 | 230/50 | 400/50 | 230/50 | 400/50 |
| Amperage [A] | 2,35 | 0,78 | 5,83 | 3,1 | 4,1 | 2,1 | 9,15 | 3,9 |
| Power [W] | 0,53 | 430 | 1,23 | 1,68 | 0,89 | 0,98 | 1,96 | 2,06 |
| Speed [rpm] | 750 | 810 | 990 | 1305 | 755 | 840 | 1200 | 1355 |
| Weight [kg] | 30 | 30 | 32 | 32 | 38 | 38 | 42 | 42 |
| Condenser [μF] | 8 | – | – | – | 16 | – | 30 | – |
| Insulation class | F | F | F | F | F | F | F | F |
| Protection class | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 |
| Model | 700×400 A3 | 700×400 B3 | 700×400 D3 | 800×500 C3 | 800×500 E3 | 800×500 F3 | 1000×500 G3 | 1000×500 H3 |
| Voltage[V/Hz] | 400/50 | 400/50 | 400/50 | 400/50 | 400/50 | 400/50 | 400/50 | 400/50 |
| Amperage [A] | 2,25 | 3,15 | 6,8 | 2,94 | 5,26 | 9,41 | 5,24 | 7,4 |
| Power [W] | 1,02 | 1,54 | 4 | 1,29 | 2,81 | 5,35 | 2,48 | 4,15 |
| Speed [rpm] | 680 | 835 | 1375 | 643 | 870 | 1390 | 690 | 890 |
| Weight [kg] | 47 | 54 | 60 | 70 | 78 | 81 | 90 | 90 |
| Condenser [μF] | – | – | – | – | – | – | – | – |
| Protection class | F | F | F | F | F | F | F | F |
| Protection class | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 | IP 44 |
