/ Product catalogue / Commercial and industrial ventilation / Inline fans / For rectangular ducts / VKPF / VKPF 4E 500x250
| Unit of measurement | VKPF 4E 500x250 | |
| Connected air duct size | mm | 500x250 |
| Phases | - | 1 |
| Minimum supply voltage | V | 230 |
| Maximum supply voltage | V | 230 |
| Power supply frequency | Hz | 50 |
| Rated power | W | 535 |
| Unit current | A | 2.49 |
| Maximum airflow | m³/h | 1750 |
| Rotation speed at 50hz | - | 1250 |
| Sound pressure level LpA at 3 m | dB(A) | 53 |
| Weight | kg | 24 |
| 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 | VKPF 4E 500x250 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal external pressure (Pa) | 286 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 24.2 |
| Declared typology | NRVU UVU |
| Effective electric power input (kW) | 0.35 |
| Sound power level (dB(A)) | 73 |
| B | B1 | B2 | H | H1 | H2 | H3 | L |
|---|---|---|---|---|---|---|---|
| 500 | 520 | 540 | 250 | 270 | 290 | 335 | 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 KOM1 500x250 |
|
Backdraught gravity dampe for shutting off air flow in rectangular air ducts |
| Vents KR 500x250 |
|
Air dampers for controlling air flow in rectangular air ducts |
| 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 |
| Name | Photo | Description |
|---|---|---|
| Vents RRV 500x250 |
|
Air flow controllers |
| Name | Photo | Description |
|---|---|---|
| Vents RSA5E-3,5-T |
|
Speed controllers are applied for air flow control of single phase fans by means of motor step speed control |
| Name | Photo | Description |
|---|---|---|
| Vents OKW 500x250-3 |
|
Rectangular inline water coolers |
| Name | Photo | Description |
|---|---|---|
| Vents OKF 500x250-3 |
|
Rectangular inline direct evaporative coolers |
