Older versions (like 2003 or 2007) are frequently circulated, while the current version may have stricter noise limits.
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: Applies to standard AC or DC rotating electrical machines with rated outputs from 1 kW to 5,500 kW and speeds up to Measurement Focus : Specifies the determination of the A-weighted sound power level ( cap L sub cap W cap A end-sub Older versions (like 2003 or 2007) are frequently