Wind turbines - Declaration of apparent sound power level and tonality values Ingestion-build-59651 and "stopped" and "at rest"

and "stopped" and "at rest" on the other hand

An automatic protection to the consumer (by means of a switch to tightened inspection or discontinuation of sampling inspection) should a deterioration in quality be detected

referring to a test rig with a nominal face area of 610 mm × 610 mm (24 in × 24 in)

Basis of designation system

system test

Wind turbines - Declaration of apparent sound power level and tonality values Ingestion-build-59651 and "stopped" and "at rest"1 Scope This part of IEC 61400 gives guidelines for declaring the apparent sound power level and tonality of a batch of wind turbines. The measurement procedures for apparent sound power level and tonality are defined in IEC 6140011.