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12
WILO SE 07/2013
6.3
Anticipated noise levels for standard
pumps
Anticipated noise levels for standard pumps:
Tab. 2: Anticipated noise levels for standard pumps
1)
Spatial mean value of sound-pressure levels within a cube-shaped measuring area at a
distance of 1 m from the surface of the motor
Motor power
P
N
[kW]
Measuring surface sound-pressure level
Lp, A [dB(A)]
1)
Pump with three-phase motor
without speed control
2900 min
-1
1450 min
-1
≤
0.55
52
58
0.75
60
51
1.1
60
53
1.5
67
55
2.2
67
59
3.0
67
59
4.0
67
59
5.5
71
63
7.5
71
63
11
74
65
15
74
65
18.5
74
71
22
76
71
30
79
72
37
79
73
45
79
73
55
79
74
75
80
72
90
81
70
110
81
72
132
-
72
160
-
72
200
-
73
250
-
74
315
-
74
