13.3 Sound pressure level
The data in this table applies for pumps including
motor, such as MG, MMG and Siemens motors.
The values stated are maximum sound pressure
levels. Tolerances are according to ISO 4871.
50 Hz motor
2-pole:
n = 2900 min
-1
4-pole:
n = 1450 min
-1
6-pole:
n = 970 min
-1
Motor [kW]
Maximum sound pressure level
[dB(A)] - ISO 3743
Three-phase motors
2-pole
4-pole
6-pole
0.25
56
41
-
0.37
56
45
-
0.55
57
42
40
0.75
56
42
43
1.1
59
50
43
1.5
58
50
47
2.2
60
52
52
3
59
52
63
4
63
54
63
5.5
63
57
63
7.5
60
58
66
11
60
60
66
15
60
60
66
18.5
60
63
66
22
66
63
66
30
71
65
59
37
71
66
60
45
71
66
58
55
71
67
58
75
73
70
61
90
73
70
61
110
76
70
61
132
76
70
61
160
76
70
65
200
76
70
-
Motor [kW]
Maximum sound pressure level
[dB(A)] - ISO 3743
Three-phase motors
2-pole
4-pole
6-pole
250
82
73
-
315
82
73
-
355
77
75
-
400
-
75
-
60 Hz motor
2-pole:
n = 3500 min
-1
4-pole:
n = 1750 min
-1
6-pole:
n = 1170 min
-1
Motor [kW]
Maximum sound pressure level
[dB(A)] - ISO 3743
Three-phase motors
2-pole
4-pole
6-pole
0.25
-
-
-
0.37
-
-
-
0.55
-
-
-
0.75
-
-
-
1.1
64
51
-
1.5
64
52
62
2.2
65
55
60
3
54
57
67
4
68
56
67
5.5
68
62
67
7.5
73
62
70
11
70
66
70
15
70
66
57
18.5
70
63
57
22
70
63
59
30
71
65
59
37
71
65
61
45
75
65
64
55
75
68
64
75
77
71
63
90
77
71
63
110
81
75
62
42
English (GB)
Summary of Contents for NB 80-200/222VAXEF1BESBQQEWX2
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