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eLibrary > BS EN 60704-2-4:2012+A12:2023 Household and similar electrical appliances. Test code for the determination of airborne acoustical noise - Particular requirements for washing machines and spin extractors >

BS EN 60704-2-4:2012+A12:2023 Household and similar electrical appliances. Test code for the determination of airborne acoustical noise - Particular requirements for washing machines and spin extractors, 2024

BS EN 60704-2-4:2012+A12:2023 Household and similar electrical appliances. Test code for the determination of airborne acoustical noise - Particular requirements for washing machines and spin extractors, 2024

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Blank Page
English [Go to Page]
CONTENTS
FOREWORD
INTRODUCTION
1 Scope and object [Go to Page]
1.1 Scope
1.2 Object
1.3 Measurement uncertainty
1.101 Standard deviation for declaration and verification
2 Normative references
3 Terms and definitions
Tables [Go to Page]
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
4 Measurement methods and acoustical environments [Go to Page]
4.2 Direct method
4.3 Comparison method
5 Instrumentation [Go to Page]
5.3 Instrumentation for measuring operating conditions
6 Operation and location of appliances under test [Go to Page]
6.1 Equipping and pre-conditioning of appliances
6.2 Supply of electric energy and of water or gas
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
7 Measurement of sound power levels [Go to Page]
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 [Go to Page]
8.101 Final result
9 Information to be recorded [Go to Page]
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 [Go to Page]
10.3 Test conditions for the appliance
10.4 Acoustical data
Annexes
Annex A(normative)
Bibliography [Go to Page]

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BS EN 60704-2-4:2012+A12:2023 Household and similar electrical appliances. Test code for the determination of airborne acoustical noise - Particular requirements for washing machines and spin extractors, 2024

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