Centrifugal Fans AT belt driven - Nicotra Gebhardt
Centrifugal Fans AT belt driven - Nicotra Gebhardt
Centrifugal Fans AT belt driven - Nicotra Gebhardt
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<strong>AT</strong> 25/20<br />
Technical Data<br />
Impeller Data Impeller Data<br />
Impeller diameter<br />
Number of blades<br />
Dr z<br />
636<br />
56<br />
mm Impeller weight<br />
Density of media<br />
Moment of Inertia<br />
J 2.475 kgm² Tolerance class (DIN 24166)<br />
Performance Curves<br />
Please note coloured area!<br />
N all types suitable<br />
N do not use in this area<br />
2500<br />
Pa<br />
2000<br />
1500<br />
1000<br />
p F<br />
82<br />
800<br />
600<br />
500<br />
400<br />
300<br />
200<br />
150<br />
100<br />
80<br />
60<br />
50<br />
P r<br />
0.12<br />
40<br />
2000<br />
q V<br />
v 2<br />
0.8 1<br />
pd2 0.25<br />
1.4<br />
3000<br />
0.55<br />
2<br />
∆L Wrel4 (A)<br />
Duty Speed<br />
point 1/min<br />
dB<br />
SX 900 4<br />
SX 600 3<br />
SX 300 2<br />
qV opt 900 2<br />
qV opt 600 2<br />
qV opt 300 1<br />
DX 900 3<br />
DX 600 2<br />
DX 300 2<br />
1<br />
0.75<br />
SX<br />
1.1<br />
1.5<br />
2.2<br />
3.0<br />
4.0<br />
5.5<br />
60<br />
7.5<br />
Normal operation area<br />
kW<br />
11<br />
65<br />
DX<br />
47%<br />
70<br />
15<br />
75<br />
57<br />
m 29 kg<br />
r 1 1.2 kg/m³<br />
2<br />
4000 5000 6000 8000 10000 15000 20000 30000 40000 50000<br />
2 3 4 5 6 7 8 9 10 14 20 30<br />
4 6 8 10 20 40 60 80 100 200 400<br />
L WA 7<br />
80<br />
22<br />
66<br />
85<br />
90<br />
30<br />
71<br />
95<br />
66<br />
100<br />
2 3 4 5 6 7 8 9 10 14<br />
63 125 250 500 1000 2000 4000 8000 Hz<br />
5 8 2 -4 -7 -11 -14 -15 dB<br />
7 9 1 -4 -7 -10 -12 -17 dB<br />
13 4 0 -3 -6 -8 -13 -21 dB<br />
2 5 1 -5 -5 -10 -13 -16 dB<br />
4 7 -1 -2 -7 -9 -12 -17 dB<br />
10 3 1 -3 -6 -9 -14 -21 dB<br />
-2 0 -2 -6 -4 -8 -10 -14 dB<br />
-1 1 -4 -3 -5 -8 -11 -15 dB<br />
4 -1 0 -3 -5 -8 -12 -18 dB<br />
η r<br />
Belt Driven <strong>Centrifugal</strong> <strong>Fans</strong> / <strong>AT</strong> / Technical Data<br />
Performance certified is for installation type B - free inlet, ducted outlet.<br />
Power rating (kW) does not include transmission losses.<br />
Performance ratings do not include the effects of appurtenances (accessories).<br />
Relative sound power level for inlet side L Wrel7 at octave<br />
centre frequencies f c<br />
<strong>Nicotra</strong> <strong>Gebhardt</strong> S.p.A certifies that the fan shown herein is licensed to bear the AMCA Seal.<br />
The ratings shown are based on tests and procedures performed in accordance with AMCA<br />
Publication 211 and comply with the requirements of the AMCA Certified Ratings Program.<br />
The AMCA Certified Ratings Seal applies to air performance ratings only.<br />
54<br />
105 dB<br />
600<br />
m³/h<br />
40<br />
900<br />
800<br />
700<br />
600<br />
500<br />
400<br />
350<br />
300<br />
250<br />
<strong>AT</strong> TIC<br />
m³/s Measured in<br />
installation B<br />
m/s according to ISO 5801:<br />
Pa<br />
1/min<br />
1100<br />
W<br />
23<br />
1000 21<br />
8<br />
7<br />
6<br />
5<br />
200 4<br />
N<br />
Relative sound power level for discharge side L Wrel4 at<br />
octave centre frequencies f c<br />
63 125 250 500 1000 2000 4000 8000 Hz<br />
10 14 6 -1 -5 -9 -11 -13 dB<br />
14 13 4 -2 -5 -8 -10 -15 dB<br />
17 8 2 -1 -4 -6 -11 -22 dB<br />
6 10 4 -3 -4 -9 -11 -15 dB<br />
9 11 2 -2 -6 -8 -11 -17 dB<br />
14 5 2 -2 -5 -7 -13 -23 dB<br />
2 5 2 -2 -2 -6 -9 -13 dB<br />
5 5 0 0 -4 -6 -10 -15 dB<br />
8 3 2 -1 -4 -7 -12 -20 dB<br />
19<br />
17<br />
15<br />
13<br />
11<br />
P b