Standard
IEC 60034-9:1972
[Superseded]Rotating electrical machines - Part 9: Noise limits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: 01/01/1972
Pages: 16
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[Superseded]
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