Aco Silent Fan Box Model AHF-630/3
July 21, 2021
Aco Silent Fan Box Model AHF-500/3
July 21, 2021
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Aco Silent Fan Box Model AMF- 630/3

Variable direction discharge, backward curved centrifugal fan.

High efficiency IE2 external rotors motor and IE3 for induction rotor motors. Highest quality Electric motors with thermal protection will guarantee the long life and trouble free operation due to its construction and air cool system.

Free running High density HD backward curved Impeller is made of aluminium and dynamically balanced according to G6.3 two plane.

Acoustic panels are easily removable which make it easy to install in any direction as well as easy to clean and maintain.

Speed controllable 0 to 100% only by High efficiency variable frequency drive, pre-programmed and fully protecting the fan against any sort of harm.

Low sound level due to the 25mm thick acoustic panels, to absorb the noise to the highest level.

Casing and all corners are made of corrosion resistance aluminium for longer life.

Aco-silent fans can be used as extract and supply unit.


Technical Parameters
Voltage 230-400 V
Frequency 50 Hz
Phase(s) 3~
Input Power 1450 W
FLC Current 5.32 A
Impeller Speed 1450 r.p.m
Efficiency IE2
Air Flow Max 8704 m3/h
Maximum ambient Temperature max 60 °C
Enclosure class IP54
Insulation class F
Motor type AC
Weight 64 kg


Speed Control
Principe of control Variable frequency Drive
Input voltage 1 ~ 200-240 V
Input current 15 A
Output current 6.1 A
Output voltage 3~ 0-250 V
Frequency 0-50 Hz
Enclosure class IP20


Sound Data
Sound pressure level at 3m 54 dB(A)
Acoustics Hz Tot 63 125 250 500 1k 2k 4k 8k
LwA Inlet dB(A) 77 64 64 70 72 71 68 63 56
LwA Outlet dB(A) 79 66 68 72 74 73 70 65 58
LwA Surrounding dB(A) 62 49 51 55 57 56 53 48 41
Mid-frequency band, Hz, Measuring point: qv = 1,79 m3/s, Ps = 717 Pa




□A □B □C øD øE F
ST500-04 670 670 590 504 321 300

Air Volume Flow Rate

air volume flow rate of 500 fans

mechanical efficiency of 500 fans

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