Grundfos NB Series - Page 25

461
Airborne noise emitted by pumps with MG, MMG, Siemens and TECO motors
50 Hz
2-pole: n = 2900 min
-1
4-pole: n = 1450 min
-1
6-pole: n = 970 min
-1
Motor
[kW]
L
pA
[dB(A)]
MG
model B
MG model C
MG
model D
Siemens MMG model E TECO
4-pole 2-pole 4-pole 2-pole 2-pole 4-pole 6-pole 2-pole 4-pole 6-pole 2-pole 4-pole 6-pole
0.25 42
0.37 42 40 51 58 59
0.55
42 40 51 60 58 59
0.75 56 42 43 52 62 58 59
1.1 5551 59 4843 52625959
1.5 5855 58 4847 53645959
2.2 5752 60 5352 57646259
3.0 5956 59 5363 61656258
4.0 6659 63 5363 61656361
5.5 6357 63 6263 61706360
7.5 73
68 62 66 63 65 73 62 61
11.0
70 66 66 78 67 65 76 69 62
15.0 70 66 66 78 67 65 76 69 65
18.5 70 63 66 78 68 68 76 72 69
22.0 70 63 66 82 68 68 83 72 70
30.0 71 65 59 84 71 68 88 76 74
37.0 71 66 60 84 73 70 88 82 75
45.0 71 66 58 84 73 72 90 82 75
55.0 71 67 58 85 75 72 91 83 81
75.0 73 70 61 86 78 77 91 83 81
90.0 73 70 61 86 78 77 92 85 84
110.0 767061898577928584
132.0 76 70 61 89 85
93 88 84
160.0 76 70
92 89 93 90
200.0 76 70 92 89 93 90
250.0 82 73 95 93 95 92
315.0 82 73 95 93 95 94
355.0 77