Iec 60034-9 Pdf ◎ | Recommended |

As a rough rule of thumb found within the standard’s tables, a typical 50 kW motor running at 1500 RPM might have a sound power limit around 78 dB(A), whereas a larger 1000 kW motor might allow for levels closer to 95 dB(A).

If you are a motor manufacturer, your product data sheet probably states: "Noise level according to IEC 60034-9 Class N" — but you need the PDF to verify your measurement setup. If you are a buyer, your tender document will specify: "Motor noise not to exceed values per IEC 60034-9, Class R, Edition 4.0" — again, you need the exact figures. iec 60034-9 pdf

Sites offering a free "iec 60034-9 pdf download" are almost always: As a rough rule of thumb found within

| Power (kW) | Speed (rpm) | LWA limit (dB) | |------------|-------------|----------------| | 1.1 | 3000 (2p) | 70 | | 11 | 1500 (4p) | 73 | | 110 | 1000 (6p) | 79 | | 500 | 750 (8p) | 87 | Sites offering a free "iec 60034-9 pdf download"