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BS 4999-109

1987 Edition, February 27, 1987

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General Requirements for Rotating Electrical Machines Part 109: Noise Levels, Including Test Methods



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Superseded By: BS EN 60034-9

EN
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W/D S/S BY BS EN 30034-9
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Description / Abstract:

Specifies methods of measuring and classifying the acoustic noise emitted under free field conditions. Methods for correcting for presence of pure tones. Upper limits of dB(A) sound power given for machines rated up to 16 MW.