BSI BS 4999-109:1987

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General requirements for rotating electrical machines -- Specification for noise levels, including test methods

Best Price Guarantee Feb 27, 1987 English 18 Pages

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A newer publication replaces it: BSI BS EN 60034-9


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BSI BS 4999-109:1987

General requirements for rotating electrical machines -- Specification for noise levels, including test methods

PUBLISH DATE 1987
PAGES 18
BSI BS 4999-109:1987

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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