/ Product catalogue / Commercial and industrial ventilation / Inline fans / For rectangular ducts / VKPFI / VKPFI 4D 500x250
| Unit of measurement | VKPFI 4D 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 |
| Rotation speed at 50hz | - | 1270 |
| 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 |
| Impeller material | - | Galvanized steel |
| 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 |
| Sound power level (dB(A)) | 64 |
| Declared typology | NRVU UVU |
| 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 |
| Name | Photo | Description |
|---|---|---|
| Vents SR 500x250 |
|
Plate silencer for installation in rectangular ducts |
| Name | Photo | Description |
|---|---|---|
| Vents FB 500x250 |
|
Rectangular panel air filters |
| Vents FBK 500x250-4 |
|
Rectangular bag air filters |
| Vents FBK 500x250-5 |
|
Rectangular bag air filters |
| Vents FBK 500x250-7 |
|
Rectangular bag air filters |
| Name | Photo | Description |
|---|---|---|
| Vents KG 500x250 |
|
Gravity valve for automatic airflow shut-off in round air ducts |
| Name | Photo | Description |
|---|---|---|
| Vents VVG 500x250 |
|
Flexible anti-vibration inserts for round air ducts |
| Name | Photo | Description |
|---|---|---|
| Vents PR 500x250 |
|
Cross-flow plate heat exchangers for rectangular air ducts |
| Name | Photo | Description |
|---|---|---|
| Vents SKRA 500x250/24 |
|
Mixing chambers for mixing (recirculating) part of the exhaust air with the outdoor air in the appropriate proportion |
| Name | Photo | Description |
|---|---|---|
| Vents NKV 500x250-2 |
|
Inline water supply air heaters or heater for air handling units with a rectangular cross-section |
| Vents NKV 500x250-4 |
|
Inline water supply air heaters or heater for air handling units with a rectangular cross-section |
| Name | Photo | Description |
|---|---|---|
| Vents NK 500x250-6,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-7,5-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-9,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-10,5-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-12,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-15,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-18,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-21,0-3 |
|
Rectangular electric inline heaters |
| Vents NK 500x250-6,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-7,5-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-9,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-10,5-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-12,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-15,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-18,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Vents NK 500x250-21,0-3 U |
|
Rectangular electric inline heaters with control unit |
| Name | Photo | Description |
|---|---|---|
| Vents RRV 500x250 |
|
Air flow controllers |
| Name | Photo | Description |
|---|---|---|
| Vents RSA5D-1,5-M |
|
Three phase speed controller |
