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 VKPFI 4D 500x250


Inline centrifugal sound- and heat insulated fan. Maximum capacity - 1850 m3/h.

  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Additional diagrams
  • Legend
Description
Description
APPLICATIONS
  • Supply and exhaust ventilation systems for various premises with a limited mounting space. 
  • Designed for connection with 400x200, 500x250, 500x300, 600x300, 600x350, 700x400, 800x500, 900x500, 1000x500 mm rectangular air ducts.
DESIGN
  • The fan casing is made of galvanized steel.
  • VKPFI models are heat- and sound-insulated with 50 mm layer of mineral wool.
MOTOR
  • The impeller with forward curved blades made of galvanized steel is powered by 4-, 6- or 8- pole external rotor asynchronous motor.

  • Such modification ensures high air flow capacity and relatively significant differential pressure.

  • For thermal overheating protection the thermal contacts with leaded outside terminals are incorporated in the motor winding for connection with the external protection devices. 

  • The motor is equipped with the ball bearings for long service life.
  • For precise features, safe operation and low noise, each impeller is dynamically balanced while assembly.
  • Motor protection rating IP 44.
SPEED CONTROL
  • Smooth or step speed control with a thyristor or autotransformer speed controller. 
  • Several fans may be connected to one speed controller provided that the total power and operating current do not exceed the rated speed controller parameters.
MOUNTING
  • The fans are designed for inline rectangular air duct mounting and require no special fixing in case of direct connection.
  • In case of connection through the flexible connectors the fan is fixed to a building by means of supports, suspension brackets or fixation brackets. 
  • The fans can be mounted in any position with respect to the pointer direction on the casing.
  • Access for the fan maintenance shall be provided.
  • The fan is powered through the external terminals.
  • The casing is provided with the removable access door for maintenance.
VENTS VKPFI fan office ventilation example
Characteristics
Characteristics
Parameter VKPFI 4D 500x250
Measurement unit
Sound- and heat-insulated casing yes -
Design centrifugal -
Phase 3 ˜
Voltage 400 V
Frequency 50 Hz
Sound pressure level at 3 m distance 44 dBА
Power consumption 570 W
Maximum air capacity 1850 m³/h
Current 0.94 A
RPM 1270 min-1
Max. transported air temperature -20 +40 °С
Protection rating IP X4 -
Weight 40.5 kg
Number of poles 4 -
Casing material galvanized steel -
Width 500 mm
Height 250 mm
Form-ducts for rectangular air ducts -
Mounting Inline -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air flow:
  • Pressure:
Operating point
  • Air flow: --
  • Pressure: ---
Files archieve
Downloads
Name
User's manual "VENTS VKPFI" (pdf 1.26Mb)
Brochure "VENTS VKPF, VKPFI" (pdf 578.28Kb)
Download high quality image "VENTS VKPFI (ErP 2015, 2016, 2018)" (psd 4.09Mb)
Declaration of сonformity "VKPF,VKPFI" (pdf 1.68Mb)
Download image "VENTS VKPFI (ErP 2015, 2016, 2018)" for your website (png 372.58Kb)
Dimensions
Characteristics
VENTS  VKPFI 4D 500x250
Parameter Value Measurement unit
В 500 mm
B1 520 mm
B2 540 mm
B3 570 mm
H 250 mm
H1 270 mm
H2 290 mm
H3 410 mm
L 640 mm
Additional diagrams
Additional diagrams
Sound-power level   Octave-frequency band [Hz]
  Hz   General   63   125   250   500   1000   2000   4000   8000
LwA to inlet   dBA 67 55 61 57 52 61 58 57 54
LwA to outlet dBA 71 49 58 60 62 67 66 61 60
LwA to environment dBA 50 27 38 41 44 45 42 40 43

 

ƞ, [%]   MC   EC   N   VSD   [kW]   [A]   [m3/h]   [Pа]   [RPM]   SR
34.3   А   Static   44.9   No   0.210   0.6   820   310   1420   1

 

Legend
Legend
Series  Number of poles Phase Flange diameter [WxH]
VENTS VKPF
I - sound- and heat-insulated casing
4,6,8 E-single phase
D - three phases
400x200, 500x250, 500x300, 600x300, 600x350, 700x400, 800x500, 900x500, 1000x500

 

ErP data  
Overall efficiency η,[%]
Measurement category MC
Efficiency category EC
Efficiency grade N
Variable speed drive VSD
Power [kW]
Current [A]
Air flow [m3/h]
Static pressure [Pa]
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