/ Product catalogue / Commercial and industrial ventilation / Roof exhaust fans / Centrifugal / VKH / VKH 4D 355
| Unit of measurement | VKH 4D 355 | |
| Phases | - | 3 |
| Maximum supply voltage | V | 400 |
| Minimum supply voltage | V | 400 |
| Power supply frequency | Hz | 50/60 |
| Rated power | W | 264 |
| Unit current | A | 0.58 |
| Maximum airflow | m³/h | 3290 |
| Rotation speed at 50hz | - | 1430 |
| Sound pressure level LpA at 3 m | dB(A) | 52 |
| Weight | kg | 30.3 |
| Transported air temperature (max) | °С | 60 |
| Transported air temperature (min) | °С | -30 |
| Ingress protection rating | - | IPX4 |
| Ingress protection rating of the drive | - | IP54 |
| Impeller material | - | Aluminium |
| Size | mm | 355 |
| Trademark | Vents |
| Model | VKH 4D 355 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal external pressure (Pa) | 220 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 47.1 |
| Effective electric power input (kW) | 0.228 |
| Sound power level (dB(A)) | 73 |
| Declared typology | NRVU UVU |
| H | H1 | A | B | C | Ød | ØD |
|---|---|---|---|---|---|---|
| 347 | 386 | 625 | 620 | 450 | 11 | 438 |
| Name | Photo | Description |
|---|---|---|
| Vents RSA5D-1,5-M |
|
Three phase speed controller |
| Name | Photo | Description |
|---|---|---|
| Vents RKV 355-400 |
|
Mounting frame |
| Vents RKVI 355-400 |
|
Mounting frame with thermal-insulating layer |
| Vents FKV 355-500 |
|
Mating flange |
| Vents GKV 355-500 |
|
Flexible connector |
| Vents KKV 355-500 |
|
Backdraft damper |
