22
MIETZSCH GmbH Lufttechnik Dresden
Großenhainer Str. 137
01129 Dresden
Fax (0351) 8 58 00 74
http://www.mietzsch.de
10000
70
1,0
0,5
2,0
2000 3000
5000
.
V / m³/h
V / m³/s
10,0
4,0
3,0
5,0
30000
20000
.
710
∆
p / Pa
t
950
1450 U/min
ρ
= 1,2 kg/m³
1000
3000
2000
400
100
200
300
500
η
=
0,
80
m
ax
Radial fans of plastic material
VRE 500 / 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
speed 1450rpm with FRP-impeller
- 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 500/731W710
710
1,42
1,5
3,9
185
59
79
67
72
75
72
69
67
64
60
VRE 500/731W950
950
3,6
4,0
9,4
195
66
85
72
75
82
80
74
72
70
65
VRE 500/731W1450 GfK
1450
13,1
15,0
28,5
250
75
93
80
83
91
87
82
79
76
67
GfK - impeller made of fibre reinforced plastic (FRP)
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
)
92
0
69
1
957
860
max.1435
596
Ø 500
Ø 5
0
0
471
10
79
562
40
(3
3)
