Specifies methods of measuring and classifying the acoustic noise emitted from rotating electrical machines under free field conditions. Methods for correcting for presence of pure tones. Upper limits of dB (A) sound power for machines rated up to 16 MW.
BS 4999-51:1973
Original price was: $264.16.$132.00Current price is: $132.00.
Specification for general requirements for rotating electrical machines-Noise levels
BSI Group , 10/31/1973
