/ Product catalogue / Commercial and industrial ventilation / Roof exhaust fans / Axial / VOK / VOK 4E 300
| Unit of measurement | VOK 4E 300 | |
| Connected air duct size | mm | 300 |
| Phases | - | 1 |
| Minimum supply voltage | V | 220 |
| Maximum supply voltage | V | 240 |
| Power supply frequency | Hz | 50/60 |
| Rated power | W | 75 |
| Unit current | A | 0.35 |
| Maximum airflow | m³/h | 1340 |
| Rotation speed at 50hz | - | 1350 |
| Sound pressure level LpA at 3 m | dB(A) | 58 |
| Weight | kg | 10.5 |
| Transported air temperature (max) | °С | 60 |
| Transported air temperature (min) | °С | -30 |
| Ingress protection rating | - | IP24 |
| Ingress protection rating of the drive | - | IP44 |
| Impeller material | - | Coated steel |
| Size | mm | 300 |
| Trademark | Vents | |||||
| Model | VOK 4E 300 | |||||
| Specific energy consumption (SEC) (kWh/(m²/a)) | Cold | Average | Warm | |||
| -53.7 | A+ | -26.7 | B | -11.2 | E | |
| Type of ventilation unit | Unidirectional | |||||
| Type of drive installed | Variable speed | |||||
| Type of heat recovery system | None | |||||
| Maximum flow rate (m³/h) | 480 | |||||
| Electric power input (W) | 75 | |||||
| Reference flow rate (m³/s) | 0.093 | |||||
| Reference pressure difference (Pa) | 50 | |||||
| Specific power input (SPI) (W/(m³/h)) | 0.123 | |||||
| Control typology | Local demand control | |||||
| Maximum external leakage rates (%) | 2.7 | |||||
| Declared typology | RVU UVU | |||||
| Sound power level (dB(A)) | 58 | |||||
| The annual electricity consumption (AEC) (kWh/a) | Cold | Average | Warm | |||
| 65 | 65 | 65 | ||||
| The annual heating saved (AHS) (kWh/a) | Cold | Average | Warm | |||
| 5536 | 2830 | 1280 | ||||
| ∅D | ∅D1 | H | L | L1 |
|---|---|---|---|---|
| 314 | 555 | 340 | 585 | 450 |
| 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 |
| Vents RSA5E-5,0-T |
|
Speed controllers are applied for air flow control of single phase fans by means of motor step speed control |
| Vents RSA5E-7,5-T |
|
Speed controllers are applied for air flow control of single phase fans by means of motor step speed control |
| Name | Photo | Description |
|---|---|---|
| Vents RKV 250-315 |
|
Mounting frame |
| Vents RKVI 250-315 |
|
Mounting frame with thermal-insulating layer |
