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BS 4999-51

1973 Edition, October 31, 1973

Complete Document

Specification for general requirements for rotating electrical machines. Noise levels

Includes all amendments and changes through Amendment 2, October 31, 1973

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Superseded By: BS 4999-109

Additional Comments:
W/D S/S BY BS 4999-109
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Product Details:

  • Revision: 1973 Edition, October 31, 1973
  • Published Date: October 31, 1973
  • Status: Superseded By:
  • Superseded By: BS 4999-109
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 0
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

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.