MVA 02 rev 5 - December 2017
39 of 120
ACOUSTIC POWER* EMITTED Lw(A) (dBA)
(2/2)
Axial fans
– series with steel impeller
size
ES/H
1
EF/H
1
EF/H
vers.9-
12
EB/H
EFR/P
2
560
115
630
118
710
122
800
110
900
111
111
111
115
113
1000
113
113
112
116
116
1120
115
115
113
117
120
1250
116
116
114
118
123
1400
117
117
114
119
126
1600
119
119
116
120
121
1800
122
122
117
121
2000
123
118
* Uncer 3 dB
Chart 3-4 Acoustic power emitted Lw(A) (dBA)
1
ducted only on exit
2
ducted only on exit and at maximum synchronism speed
3
ducted only on intake and at maximum synchronism speed
