Standard
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IEC 60034-9:1990
[Superseded]Rotating electrical machines. Part 9: Noise limits.
Specifies maximum permissible A-weighted sound power levels for rotating electrical machines complying with IEC 34-1, with methods of cooling according to IEC 34-6 and degrees of protection according to IEC 34-5.
Published: 31/05/1990
Pages: 19
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