21
MIETZSCH GmbH Lufttechnik Dresden
Großenhainer Str. 137
01129 Dresden
Fax (0351) 8 58 00 74
http://www.mietzsch.de
950 U/min
m
ax
η
=
0
,7
2
0,5
2000
300
200
∆
p / Pa
t
1000
500
400
V / m³/h
.
30000
20000
3000
5000
10000
1,0
2,0
10,0
4,0
3,0
5,0
V / m³/s
710
.
2000
3000
ρ
= 1,2 kg/m³
Radial fans of plastic material
VRE 450 / 734
Impeller with forward curved vanes
PERFORMANCE
PRINCIPAL DIMENSIONS
The principal dimensions refer to elastic
connectors on inlet and outlet and for
housing position 90R.
Height of axis is identical for all housing
positions.
Further dimensions see page 27.
Number of
vibration absorbers
: 4
(in case of heavy motors 6)
Drawings in format dxf
--> MIETZSCH-CD
MOTOR VERSIONS
for standard motor 3~400V/50Hz
(Data for other motors, such as polechanging or Ex, upon inquiry.)
Working range
- stable regime in entire characteristic
range
- operation with larger volumetric flows
may lead to motor
- parallel and series connection
possible after consultation with the
manufacturers
Design features
- welded impeller with 35 vanes curved
forward
- welded spiral casing
- motor outside the flow conveyed
- robust sheet metal base, zinc-coated
- vibration absorbers in range of
delivery
- variant connectors of casing
power
nom. motor nom. motor
weight
fan type
speed
required
power
current
with motor
L
A3m
L
WA
rpm
kW
kW
A
kg
dB(A) dB(A)
63
125 250 500 1000 2000 4000 8000
VRE 450/734W710
710
7,25
7,5
17,7
226
66
83
67
69
76
81
76
71
67
56
VRE 450/734W950
950
14,5
15,0
31,5
271
71
89
74
78
82
86
79
74
68
58
L
A3m
= A - weighted sound pressure level at distance of 3 m
L
WA
= A - weighted sound power level in duct
octave-band L
WA-Okt
/ dB(A)
i_v
re_
en
(
09/
06
)
884
max.1375
Ø 450
Ø 4
5
0
454
97
4
62
4
790
503
84
5
539
40
(33
)
