Wind turbines - Declaration of apparent sound power level and tonality values Ingestion-build-59651 referring to a test rig

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

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

It can also be applied to cylinders produced of steels used at lower tensile strengths

the body size is defined by scales of the appropriate primary and

Wind turbines - Declaration of apparent sound power level and tonality values Ingestion-build-59651 referring to a test rig1 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.