1. No category

In line fan for rectangular ducts
FRKB
pag. E-5
Description
Single inlet centrifugal fan, reverse blades, mounted in
openable flanged housing, to facilitate the cleaning operations. The in line pressing and sucking mouth, together
with the compact and limited vertical development housing, allows an easy installation into the system, without
additional curves, advantagening silence and the available discharge pressure. The asynchronous single-phase induction motor is equipped with thermal protection
and can be easily controlled at speed through frequency/
voltage deviation devices. The external rotor is mounted
on sealed bearings which do not require any maintenance. The fan can work in any position, also in humid environments, with a protection level IP 44 if duct-mounted
and isolation class F.
Construction
Galvanised steel housing.
Accessories
R : phase cutting speed controller.
Specifications
In line centrifugal single phase fan for rectangular ducts.
BxH
L
X
Y
M*
(mm)
(mm)
(mm)
(mm)
(Kg)
300 x 150
375
343
193
7
400 x 200
502
443
243
11
500 x 250
532
543
293
16
600 x 300
642
643
354
27
700 x 400
787
743
455
43
* M = mass
BxH
V
Pn
RPM
(mm)
In
tMax
(V/Hz/ph)
(A)
(W)
(min )
(°C)
300 x 150
230/50/1
0,35
80
2460
75
400 x 200
230/50/1
0,73
169
2690
70
500 x 250
230/50/1
1,01
230
2750
60
600 x 300
400/50/3
0,45
240
1330
60
700 x 400
400/50/3
0,8
386
920
60
V
In
Pn
RPM
tMax
-1
electrical supply : voltage/frequency/n° phases
nominal current
nominal power
revolutions per minute
maximum temperature of transit air (continuously)
qv
Pt
LW1
LW2
LW3
LP
3
(m /h)
(Pa)
(dBA)
(dBA)
(dBA)
(dBA)
300 x 150
270
210
71
72
58
52
400 x 200
690
380
75
79
63
56
500 x 250
740
430
74
79
63
56
600 x 300
1600
230
69
74
58
52
700 x 400
2600
240
71
76
58
51
Dn







(Not for three-phase)
qv
Pt
LW1
LW2
LW3
LP
air flow (operating point)
total pressure (operating point)
sound power level transmitted inlet side
sound power level transmitted outlet side
sound power level radiated
sound pressure level (at 3 m, Seq = 20 m2, ½ sphere)
For further details, please contact our. Technical Office
F.C.R. SpA - Via E. Fermi, 3 - 20092 Cinisello Balsamo (MI) - Italy
phone +39 02 61798 1 - fax +39 02 61798 300 - www.fcr.it - fcr@fcr.it
16.04.15
In line fan for rectangular ducts
pag. E-6
600
FRKB 300x150
300
500
250
400
Pt (Pa)
Pt (Pa)
350
200
200
100
100
qv (m /h)
qv (m /s)
0
100
200
300
400
500
0
0.02
0.04
0.06
0.08
700
0.1
qv (m3/h)
qv (m3/s)
3
0.12
Pt (Pa)
Pt (Pa)
(Pt : total pressure)
0.05
400
0.1
600
0.15
800
0.2
200
200
150
100
FRKB 600x300
0
200
0
0.05
400
0.1
600
0.15
800
0.2
1000
0.25
0.3
1200
1400
qv (m3/h)
qv (m3/s)
0.35
0
0
500
0.1
1000
0.2
0.3
1500
0.4
FRKB 700x400
300
Pt (Pa)
0.3
100
350
250
200
150
100
qv (m /s)
0.25
1200
250
300
qv (m3/h)
1000
300
400
qv (m3/s)
0
200
350
500
qv (m3/h)
0
400
FRKB 500x250
600
FRKB 400x200
300
150
3
FRKB
0
1000
2000
3000
4000
3
0
0.2
0.4
0.6
0.8
1
F.C.R. SpA - Via E. Fermi, 3 - 20092 Cinisello Balsamo (MI) - Italy
phone +39 02 61798 1 - fax +39 02 61798 300 - www.fcr.it - fcr@fcr.it
16.04.15
2000
0.5
0.6
2500