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BS EN 60704-2-4:2012+A12:2023:2024 Edition

BS EN 60704-2-4:2012+A12:2023:2024 Edition

$142.49

Household and similar electrical appliances. Test code for the determination of airborne acoustical noise – Particular requirements for washing machines and spin extractors

Published By Publication Date Number of Pages
BSI 2024 24
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PDF Catalog

PDF Pages PDF Title
2 undefined
6 Blank Page
8 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope and object
1.1 Scope
1.2 Object
1.3 Measurement uncertainty
13 1.101 Standard deviation for declaration and verification
2 Normative references
3 Terms and definitions
Tables
Table 101 – Standard deviations of sound power levels for washing machines
Table 102 – Standard deviations of sound power levels for spin extractors
Table 103 – Standard deviations for declaration and verification for washing machines
Table 104 – Standard deviations for declaration and verification for spin extractors
14 4 Measurement methods and acoustical environments
4.2 Direct method
15 4.3 Comparison method
5 Instrumentation
5.3 Instrumentation for measuring operating conditions
6 Operation and location of appliances under test
6.1 Equipping and pre-conditioning of appliances
6.2 Supply of electric energy and of water or gas
16 6.4 Loading and operating of appliances during tests
6.5 Location and mounting of appliances
6.101 Standard test programme for noise measurements
6.102 Standard test load for noise measurements
18 7 Measurement of sound power levels
7.1 Microphone array, measurement surface and RSS location for essentially free-field conditions over reflecting plane(s)
7.4 Measurements
8 Calculation of sound pressure and sound power levels
8.101 Final result
19 9 Information to be recorded
9.2 Description of appliance under test
9.7 Electric supply, water supply, etc.
9.9 Operation of the appliance under test
9.12 Measured data
10 Information to be reported
10.3 Test conditions for the appliance
20 10.4 Acoustical data
21 Annexes
Annex A(normative)
22 Bibliography

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BS EN 60704-2-4:2012+A12:2023
$142.49