0,3
0,2
0,5
0,4
600
2000
1000
t
∆
p / Pa
2,0
V / m³/s
5,0
3,0 4,0
1,0
20000
5000
3000
10000
V / m³/h
.
.
ρ
= 1,2 kg/m³
2900 U/min
1450
950
710
m
ax
η
=
0,
80
1000
2000
300
100
200
500
400
3000
4000
16
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 315 / 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 2900rpm 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 315/731W710
710
0,139
0,18
0,75
60
48
65
53
59
58
60
58
53
45
38
VRE 315/731W950
950
0,354
0,37
1,2
61
53
71
59
64
65
66
64
60
56
44
VRE 315/731W1450
1450
1,25
1,5
3,45
68
62
80
65
69
75
74
72
67
62
51
VRE 315/731W2900 GfK
2900
10,2
11,0
21,4
144
77
95
81
86
91
90
87
82
76
65
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
)
710
max.1155
Ø 315
369
Ø 3
1
5
729
376
490
43
5
60
5
25
353
