/ Product catalogue / Commercial and industrial ventilation / Inline fans / For rectangular ducts / VKPFI / VKPFI 4D 500x250
| Unit of measurement | VKPFI 4D 500x250 | |
| Connected air duct size | mm | 500x250 |
| Minimum supply voltage | V | 400 |
| Maximum supply voltage | V | 400 |
| Power supply frequency | Hz | 50 |
| Rated power | W | 570 |
| Unit current | A | 0.94 |
| Maximum airflow | m3/h | 1850 |
| Sound pressure level LpA at 3 m | dB(A) | 44 |
| Weight | kg | 40.5 |
| Transported air temperature (max) | °С | 40 |
| Transported air temperature (min) | °С | -20 |
| Ingress protection rating | - | IPX4 |
| Ingress protection rating of the drive | - | IP44 |
| Trademark | Vents |
| Model | VKPFI 4D 500x250 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal flow rate (m3/s) | 0.228 |
| Nominal external pressure (Pa) | 310 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 34.3 |
| Declared typology | NRVU UVU |
| Sound power level (dB(A)) | 64 |
| Effective electric power input (kW) | 0.21 |
| B | B1 | B2 | B3 | H | H1 | H2 | H3 | L |
|---|---|---|---|---|---|---|---|---|
| 500 | 520 | 540 | 570 | 250 | 270 | 290 | 410 | 640 |
