710
950
2,0
5,0
3,0 4,0
0,3
0,5
0,4
1,0
2000
1000
10000
5000
3000
20000 30000
V / m³/s
.
.
V / m³/h
t
∆
p / Pa
ρ
= 1,2 kg/m³
1450 U/min
1000
2000
500
100
400
200
300
50
η
=
0,
80
m
ax
18
MIETZSCH GmbH Lufttechnik Dresden
Großenhainer Str. 137
01129 Dresden
Fax (0351) 8 58 00 74
http://www.mietzsch.de
Radial fans of plastic material
VRE 400 / 731
Impeller with backward 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
- fan can be operated beyond
characteristic specified
- parallel connection possible, series
connection after consultation with the
manufacturers
Design features
- welded impeller with 8 vanes curved
backward
- 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 400/731W710
710
0,46
0,55
1,58
115
55
72
59
65
69
66
62
60
57
53
VRE 400/731W950
950
1,17
1,5
3,9
122
61
79
66
70
76
73
68
65
63
58
VRE 400/731W1450
1450
4,13
5,5
11,4
148
68
86
73
76
84
80
75
72
69
60
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
)
830
max.1335
Ø 400
Ø 40
0
409
720
555
86
7
446
479
740
40
(3
3)
