ventilators: harmann: duct fans
Harmann DRF
Fan for flange installation
The DRF model is a radial fan designed for flange installation (20 mm) within rectangular ventilation ducts. The DRF housing is made of galvanized sheet steel, with a hinged service cover on which the motor and rotor module is suspended. Inlet to the impeller secured by a net.
F-type impeller dynamically balanced with blades inclined forward, made of galvanized steel sheet.
The DRF fan drive is realized by a single-phase or three-phase asynchronous electric motor (230V or 400V, 50 Hz) with a rotating casing. The motors have an integrated thermal protection (in models where the thermocontact terminals have been led out, a thermal protection relay type SET 10 or STDT 16 should be used) and are suitable for voltage speed control. Single-phase models 80-230V, three-phase 150-400V models.
Unit protection degree: IPX4
Insulation class: F (model 30/15 / 600S – insulation class B)
| Type | A [mm] | B [mm] | C [mm] |
| DRF 40/20/900S | 438 | 267.9 | 324 |
| DRF 50/25/1800T | 538 | 314 | 394 |
| DRF 60/30/3200T | 638 | 364 | 465 |
| DRF 60/35/3000T | 638 | 414 | 465 |
| DRF 60/35/4400T | 638 | 414 | 515 |
| DRF 60/35/3200T | 638 | 414 | 515 |
| DRF 70/40/6700T | 738 | 464 | 590 |
| DRF 80/50/7300T | 837.6 | 563.8 | 660 |
| DRF 80/50/6700T | 837.6 | 563.8 | 660 |
| DRF 100/50/9600T | 1037.6 | 563.8 | 735 |
| Type | Qmax [m3/h] | Δpmax[Pa] | Pmax[W] | U[V] | Imax [A] | RPMmax [1/min] | tmax [°C] | LWA [dB(A)] | LpA [dB(A)] | m [kg] | |
| DRF 40/20/900S | 930 | 220 | 180 | 230 | 0,8 | 1460 | 50 | 59 | 52 | 9,3 | |
| DRF 50/25/1800T | 1840 | 320 | 445 | 400 | 1 | 1480 | 80 | 63 | 56 | 16,2 | |
| DRF 60/30/3200T | 3240 | 530 | 1317 | 400 | 2,8 | 1480 | 70 | 70 | 63 | 25,6 | |
| DRF 60/35/3000T | 3017 | 565 | 1440 | 400 | 2,7 | 1470 | 40 | 66 | 59 | 23,3 | |
| DRF 60/35/4400T | 4420 | 650 | 2125 | 400 | 4,4 | 1480 | 55 | 70 | 63 | 34 | |
| DRF 60/35/3200T | 3207 | 306 | 720 | 400 | 1,7 | 980 | 80 | 61 | 54 | 30,1 | |
| DRF 70/40/6700T | 6690 | 861 | 4070 | 400 | 7,4 | 1470 | 50 | 71 | 64 | 50,4 | |
| DRF 80/50/7300T | 7330 | 1134 | 6600 | 400 | 11,9 | 1460 | 40 | 73 | 66 | 70,1 | |
| DRF 80/50/6700T | 6720 | 528 | 2280 | 400 | 4,7 | 980 | 80 | 66 | 59 | 70,1 | |
| DRF 100/50/9600T | 9640 | 672 | 3800 | 400 | 7,7 | 970 | 60 | 69 | 62 | 79,8 |
