BSI BS 4999-51:1973

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Specification for general requirements for rotating electrical machines -- Noise levels

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BSI BS 4999-51:1973

Specification for general requirements for rotating electrical machines -- Noise levels

PUBLISH DATE 1973
BSI BS 4999-51:1973

Specifies methods of measuring and classifying the acoustic noise emitted from rotating electrical machines under free field conditions.

Methods for correcting for presence of pure tones.

Upper limits of dB (A) sound power for machines rated up to 16 MW.

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