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Sound pressure levels
The data in this table applies for pump including motor,
(MG, MMG, Siemens and TECO motors).
The values stated are maximum sound pressure levels. Toleran-
ces are according to ISO 4871.
50 Hz
-1
2-pole: n = 2900 min
-1
4-pole: n = 1450 min
-1
6-pole: n = 970 min
Maximum sound pressure level [dB(A)] - ISO 3743
Motor
Three-phase motors
[kW]
2-pole
0.25
56
0.37
56
0.55
57
0.75
56
1.1
59
1.5
58
2.2
60
3
59
4
63
5.5
63
7.5
60
11
60
15
60
18.5
60
22
66
30
71
37
71
45
71
55
71
75
73
90
73
110
76
132
76
160
76
200
76
250
82
315
82
355
77
400
-
4-pole
6-pole
41
-
45
-
42
40
42
43
50
43
50
47
52
52
52
63
54
63
57
63
58
66
60
66
60
66
63
66
63
66
65
59
66
60
66
58
67
58
70
61
70
61
70
61
70
61
70
65
70
-
73
-
73
-
75
-
75
60 Hz
-1
2-pole: n = 3500 min
-1
4-pole: n = 1750 min
-1
6-pole: n = 1170 min
Maximum sound pressure level [dB(A)] - ISO 3743
Motor
Three-phase motor
[kW]
2-pole
0.25
-
0.37
-
0.55
-
0.75
-
1.1
64
1.5
64
2.2
65
3
54
4
68
5.5
68
7.5
73
11
70
15
70
18.5
70
22
70
30
71
37
71
45
75
55
75
75
77
90
77
110
81
132
81
160
81
200
81
280
86
288
-
353
86
362
-
398
81
408
-
460
-
1
4-pole
6-pole
-
-
-
-
-
-
-
-
51
43
52
47
55
52
57
63
56
63
62
63
62
66
66
66
66
66
63
66
63
66
65
62
65
63
65
62
68
62
71
66
71
66
75
66
75
66
75
69
75
-
-
-
77
-
-
-
77
-
79
-
79
-
29
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