BS 7698-10:1999

Superseded

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Reciprocating internal combustion engine driven alternating current generating sets Measurement of airborne noise by the enveloping surface method

Available format(s)

Hardcopy , PDF

Superseded date

01-10-2023

Language(s)

English

Published date

01-15-1999

Publisher

British Standards Institution

Specifies measurement procedures for determining airborne noise emitted by reciprocating internal combustion engine driven generating sets so that the total or relevant noise emissions, such as exhaust and cooling system noise, with other noise sources, are evaluated on a similar basis to yield comparable results.

This part of ISO 8528 defines measurement methods for the determination of airborne noise emitted by reciprocating internal combustion engine driven generating sets in such a way that the total of relevant noise emissions, e.g. exhaust and cooling system noise, together with all other sources of engine noise, are evaluated on a similar basis to yield comparable results. However, when the exhaust and cooling systems are ducted to a remote site their noise contribution is not to be included in this part of ISO 8528.

The essential noise emission characteristic value is the sound power level.

The results of measurement taken in accordance with this part of ISO 8528 are classified as either accuracy grade 2 or grade 3 depending on which acoustic measurement conditions are complied with. Accuracy grade 2 (i.e., engineering method in accordance with ISO 3744) requires the measuring area to be a substantially acoustic-free field over a reflecting plane (with an environmental correction K_2A ≤ 2 dB) and with negligible background noise level (background noise correction K_1A ≤ 1,3 dB). Accuracy grade 3 (i.e. survey method in accordance with ISO 3746) requires the environmental correction K_2A to be less or equal than 7 dB, and the background noise correction K_1A to be less or equal than 3 dB.

For the operation of a generating set under steady conditions this part of ISO 8528 allows for the calculation of the A-weighted sound power level as well as appropriate octave or one third octave sound power level for the appropriate accuracy grade.

This part of ISO 8528 applies to RIC engine driven AC generating sets for fixed and mobile applications with rigid or flexible mountings. It is applicable for land and marine use, excluding generating sets used on aircraft or to propel land vehicles and locomotives.

NOTE 1 This part of ISO 8528 has been developed for RIC engine driven AC generating sets, but it can also be applied to RIC engine driven DC generating sets.

NOTE 2 For some specific applications (e.g. essential hospital supplies, high rise buildings, etc.) supplementary requirements may be necessary. The provisions of this part of ISO 8528 should be regarded as a basis.

NOTE 3 True comparisons can only be made between generating sets when the measurement are classified in the same accuracy grade.

Committee	MCE/14
DevelopmentNote	Also numbered as ISO 8528-10 Supersedes 93/716187 DC (10/2005)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS EN ISO 8528-10:2022
Supersedes	93/716187 DC : NOV 93

ISO 3744:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 700:1982	Power sources for manual metal arc welding with covered electrodes and for the TIG process
ISO 8528-2:2005	Reciprocating internal combustion engine driven alternating current generating sets Part 2: Engines
ISO 9614-1:1993	Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
ISO 9614-2:1996	Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
ISO 3746:2010	Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Survey method using an enveloping measurement surface over a reflecting plane
ISO 3046-4:2009	Reciprocating internal combustion engines Performance Part 4: Speed governing
ISO 11203:1995	Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
ISO 8528-1:2005	Reciprocating internal combustion engine driven alternating current generating sets Part 1: Application, ratings and performance
ISO 3046-1:2002	Reciprocating internal combustion engines Performance Part 1: Declarations of power, fuel and lubricating oil consumptions, and test methods Additional requirements for engines for general use
ISO 3046-3:2006	Reciprocating internal combustion engines Performance Part 3: Test measurements
IEC 60804:2000	Integrating-averaging sound level meters