Standard
IEC 60034-9:1997
[Superseded]Rotating electrical machines - Part 9: Noise limits
Specifies maximum permissible A-weighted sound power levels for rotating electrical machines complying with IEC 60034-1, having methods of cooling according to IEC 60034-6 and degrees of protection according to IEC 60034-5 and having a rated output from 1kW up to 5500kW with a speed limited to 3750 r/mn
Published: 30/07/1997
Pages: 19
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