BS 4999-109:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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General requirements for rotating electrical machines Specification for noise levels, including test methods
Hardcopy , PDF
15-03-1994
English
27-02-1987
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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