Grundfos LS Series User Manual

English (GB)
32
9.3 Sound pressure level
The data in this table applies for pumps including
motor, such as MG, MMG, Siemens and TECO
motors.
The values stated are maximum sound pressure
levels. Tolerances are according to ISO 4871.
50 Hz
60 Hz
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
359 52 63
463 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 -
250 82 73 -
315 82 73 -
355 77 75 -
400 - 75 -
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
43
1.5 64 52 47
2.2 65 55 52
354 57 63
468 56 63
5.5 68 62
63
7.5 73 62
66
11 70 66
66
15 70 66
66
18.5 70 63
66
22 70 63
66
30 71 65
62
37 71 65
63
45 75 65
62
55 75 68
62
75 77 71
66
90 77 71
66
110 81 75
66
132 81 75
66
160 81 75
69
200
81 75 -
280
86 - -
288
-77-
353
86 - -
362
-77-
398
81 - -
408
-79-
460
-79-

Grundfos LS Series Specifications

General

Brand	Grundfos
Model	LS Series
Category	Water Pump
Language	English