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BS EN 60704-2-4:2012

BS EN 60704-2-4:2012

$102.76

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 2012 22
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IEC 60704-2-4:2011 These particular requirements apply to single unit electrical washing machines and the washing and spinning function of combined appliances for household and similar use and to spin extractors for household and similar use. This third edition cancels and replaces the second edition (2001). Main changes are: – measurement uncertainty and standard deviations are taken into account, – definitions of standard test load and standard test program are modified, – test enclosure was replaced by common test enclosure defined in Part 1 and – information to be reported is modified. This publication is to be read in conjunction with /2.

PDF Catalog

PDF Pages PDF Title
8 English
CONTENTS
9 INTRODUCTION
10 1 Scope and object
1.1 Scope
1.2 Object
1.3 Measurement uncertainty
11 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
12 4 Measurement methods and acoustical environments
4.2 Direct method
13 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
14 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
16 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
17 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
18 10.4 Acoustical data
19 Annexes
Annex A(normative)
20 Bibliography

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BS EN 60704-2-4:2012
$102.76