Grundfos TP - Page 39

Appendix
39
Maximum sound pressure level
Three-phase motors
[kW]
50 Hz
[dB(A)]
60 Hz
[dB(A)]
2-pole 4-pole 6-pole 2-pole 4-pole
0.12 <70 <70 - <70 <70
0.18 <70 <70 - <70 <70
0.25 56 41 - <70 45
0.37 56 45 - 57 45
0.55 57 42 - 56 45
0.75 53 59.5 - 57 49
1.1 53 49.5 - 58 53
1.5 5850476453
2.2 6051526555
3.0 59.5 53 63 53.5 55
4.0 63 54 63 67.5 57
5.5 6250636862
7.5 6051666562
11.0 60 53 - 64.5 66
15.0 60 66 - 65 66
18.5 60.5 63 - 65.5 63
22.0 65.5 63 - 70.5 63
30.0 70 65 - 75 65
37.0 71 66 - 75 65
45.0 67 66 - 75 65
55.0 72 67 - 75 68
75.0 74 70 - 77 71
90.0 73 70 - 77 71
110.0 76 70 - 81 75
132.0 76 70 - 81 75
160.0 76 70 - 81 75
200.0 - 70 - 81 75
250.0 - 73 - 86 77
315.0 - 73 - - 77
355.0 - 75 - - -
400.0 - 75 - - -
500.0 - 75 - - -
560.0 - 78 - - -
630.0 - 78 - - -