GB/Z 25425-2010Declaration of apparent sound power level and tonality values for the wind turbine (English PDF)

Foreword

This instructional technical document has been prepared for this purpose.

--- Promote the standardization of wind turbine and wind turbine international standardization work;

--- To promote the continuous improvement of the quality of wind turbine products in China and enhance the competitiveness of products in the international market.

This technical document is the equivalent of IEC TS61400-14:2005 wind turbine generator set Part 14. Nominal apparent acoustic power Level and tone (English version). This guideline is equivalent to translation IEC TS61400-14:2005.

For ease of use, the following technical document has the following editorial changes.

--- The preface and introduction to IEC TS have been deleted in this guidance document and the preface of this guidance document has been added.

--- This part of IEC TS61400 read "This Guidance Technical Paper";

--- Use the decimal point "." Instead of as a decimal point comma ",";

--- For the reference of other international standards to be adopted as our standard instead of the corresponding international standards (see this instructional text Chapter 2);

--- Change the method of measuring apparent acoustical power level and tone value given in IEC TS 61414-11 to "in the scope" The present Guidance Technique The documentation is applicable to determining the nominal apparent sound power level and tone of a wind turbine. " This guideline is for reference only.

1 Scope

This Guidance Document specifies the guidelines for determining the nominal apparent sound power level and sound level of a batch wind turbine.

This guidance document is applicable to the determination of the nominal apparent sound power level and sound level of a batch wind turbine.

2 Normative references

The following documents contain provisions which, through reference in this Guidance Document, become the provisions of this Guidance Note document. All dated Reference documents, all subsequent amendments (not including errata content), or revisions do not apply to this guidance document, however, drums Recipients of the agreement based on this Guidance Document shall be encouraged to study whether the latest versions of these documents may be used and all undated references The latest version of this document applies to this guidance document.

GB/T 22516 wind turbine noise measurement method (GB/T 22516-2008, IEC 61400-11:2002, IDT)

Acoustics - Determination and verification of nominal radiated noise of machinery and equipment ISO 4872-1996

ISO 7574 (all parts) Acoustics Determination and verification of mechanical equipment, the nominal noise emission values used in statistical methods

3 Terms and definitions

The following terms and definitions apply to this guidance document.

4 Overview

ISO 4871 and ISO 7574 give a general method for the determination and verification of nominal values of noise emissions from machinery and equipment. For different batches,