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    VKPFI 4E 500*250

    VKPFI 4E 500*250
    • VKPFI 4E 500*250
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    • VKPFI 4E 500*250
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    Inline centrifugal sound- and heat insulated fan. Maximum capacity - 1750 m3/h.
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    • Description
    • Characteristics
    • Capacity diagram
    • Downloads
    • Dimensions
    • Additional diagrams
    • Designation key
    Description
    Description
    APPLICATIONS
    • Supply and exhaust ventilation systems for various premises with a limited mounting space. 
    • Designed for connection with 400*200, 500*250, 500*300, 600*300, 600*350, 700*400, 800*500, 900*500, 1000*500 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- or 6- 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 4E 500*250
    		 Measurement unit
    Phase 1 ˜
    Voltage 230 V
    Frequency 50 Hz
    Sound pressure level at 3 m distance 44 dBА
    Air capacity 1750 m³/h
    Power consumption 535 W
    Current 2.49 A
    RPM 1250 min-1
    Protection rating IP X4 -
    Design centrifugal -
    Transported air temperature -20 … +40 °С
    Weight 40.5 kg
    Number of poles 4 -
    Sound- and heat-insulated casing yes -
    Casing material galvanized steel -
    Width 500 mm
    Height 250 mm
    Duct for rectangular air ducts -
    Mounting Inline -
    Capacity diagram
    Capacity diagram
    • Selection method:
    • Air flow:
    • Pressure:
    Operating point
    • Air flow: --
    • Pressure: ---
    Files archieve
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    • Advertising and printing products
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    Name
    Download
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    "VENTS VKPF, VKPFI" product description 12-2020 (pdf 2.82Mb)
    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)
    "VENTS VKP, VKPI, VKPF, VKPFI, VKP EC, VKPI EC" user's manual 08-2022 (V07EN-05) (pdf 3.61Mb)
    Dimensions
    Characteristics
    VKPFI 4E 500*250
    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 68 57 62 58 54 57 58 59 53
    LwA to outlet dBA 72 50 60 61 60 66 66 61 62
    LwA to environment dBA 51 29 36 39 43 44 38 37 43

     

    Designation key
    Designation key
    Series   Motor modification Flange diameter [W*H]
    Number of poles Phase
    VENTS VKPF I: sound- and heat-insulated casing 4
    6    		 E: single phase
    D: three phases    		 400*200; 500*250; 500*300; 600х300; 600*350; 700*400; 800*500; 900*500; 1000*500
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