Login

Privacy Policy (GDPR)
Authorization
Not registered yet? Take advantages of registration:
Products saving in a binding to the projects
Product consultation from our experts - Online
Registration
Signup
By using this form, you confirm that you have read the site terms of use Terms of use and completely accept the terms of use

VENTS OVK 4D 250


Low pressure axial fans in the steel casing with the air flow up to 885 m³/h for wall mounting.

3D model
Gallery
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • ADDITIONAL TECHNICAL DATA
  • DESIGNATION KEY
Description
Description
APPLICATIONS
  • Combined supply and exhaust ventilation systems for various premises where high air flow at relatively low system resistance is required.

  • OVK fans can be used for the direct air exhaust or pressurization in smoke ventilation systems. 

  • OVK fan are suitable for outdoor wall mounting.

DESIGN
  • The fan casing and the impeller are made of steel with polymeric coating. 

  • OVK fan terminal box is equipped with the cord for remote connection.
MOTOR
  • The impellers are powered by two-, four- or sixpole, single or three phase asynchronous motors with external rotor and built-in thermal overheating protection depending on the model. 

  • Ball bearings in the motor provide long service life designed for at least 40 000 hours.
  • Motor protection rating IP 24.
SPEED CONTROL
  • Both smooth or step speed control is performed by means of the thyristor or autotransformer controller. 

  • Several fans can be connected to one controller if the total power and operating current do not exceed the rated controller values.
MOUNTING
  • Fan is installed on the wall surface by means of a round OVK series mounting plate.

  • The fan is powered through the external remote terminal box.

  • Power supply and installation shall be performed in compliance with the manual and wiring diagram on the terminal box.

Characteristics
Characteristics
Parameter OVK 4D 250
50 Hz
OVK 4D 250
60 Hz
Measurement unit
Phase 3 3 ˜
Voltage 400 400 V
Frequency 50 60 Hz
Sound pressure level at 3 m distance 38 38 dBА
Power consumption 60 89 W
Maximum air capacity 850 885 m³/h
RPM 1400 1750 min-1
Protection rating IP 24 IP 24 -
Weight 3.4 3.4 kg
Current 0.17 0.22 A
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Downloads
Name
User's manual "VENTS OV,OVK,OV1,OV1 R,OVK1,VKF,VKOM,OVP" (pdf 4.85Mb)
Brochure "VENTS OV, OVK, VKF" (pdf 2.62Mb)
Download high quality image "VENTS OVK (ErP 2015)" (psd 4.62Mb)
Download image "VENTS OVK (ErP 2015)" for your website (png 696.17Kb)
Dimensions
Characteristics
VENTS OVK 4D 250
Parameter Value Measurement unit
∅D 260 mm
∅d 7 mm
ØD2 340 mm
L 135 mm
∅D1 295 mm
ADDITIONAL TECHNICAL DATA
ADDITIONAL TECHNICAL DATA
Sound-power level, A-weighted Gen. Octave-frequency band [Hz] LpA, 3 m dBA LpA, 1 m dBA
dBA 63 125 250 500 1000 2000 4000 8000
LwA to environment dBA 59 25 39 43 49 54 54 49 43 38 48
DESIGNATION KEY
DESIGNATION KEY
Series and modification Motor modification Dimension type
Number of poles  Phase
VENTS OVK: round mounting plate 2
4
6
8
E: single phase
D: three phase
200; 250; 300; 350; 400; 450; 500; 550; 630, 710, 800

 

  ErP data
 Overall efficiency ŋ, [%]
 Measurement category MC
 Efficiency category EC
 Efficiency grade N
 Variable speed drive VSD
 Power [kW]
 Current [A]
 Air flow [m3/h]
 Static pressure [Pа]
 Speed [n/min-1]
 Specific ratio SR
Share your opinion
I found this page useful to select the required products easy and quick
No difficulties with the site use. Everything is logical ad clear
The site produced a nice impression

Questionnaire
Basic parameter for domestic fan selection