Grundfos MTB Serie Notice D'installation Et D'entretien page 25

Airborne noise emitted by pumps fitted with MG
and Siemens motors
Standard range
Sound pressure level [dB(A)]
Motor
MG model D
[kW]
2-pole
3
5.5 63
7.5 68
11
15
3
4
5.5
7.5 78
11
15
288
Simens
4-pole 2-pole 4-pole
55
70
70
57
56
62
70
70