BS 4999-109:1987
$142.49
General requirements for rotating electrical machines – Specification for noise levels, including test methods
| Published By | Publication Date | Number of Pages |
| BSI | 1987 | 18 |
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.
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