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IEVref:415-06-04ID:
Language:enStatus: Standard
Term: directivity (for WTGS)
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Definition: difference between the A-weighted sound pressure levels measured at different measurement positions and this measured at a reference position downwind from the turbine corrected to the same distance from the wind turbine generator system rotor center

NOTE 1 – The directivity is expressed in decibels.

NOTE 2 – The reference and measurement positions are defined in the relevant standard (i.e. IEC 61400-11).


Publication date:1999-04
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