GB/T 4214.1-2017 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 4214.1-2017 | English | 405 |
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Test method for noise of household and similar electrical appliances -- General requirements
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| GB/T 4214.1-2000 | English | 295 |
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Acoustics. Household and similar electrical appliances. Test code for determination of airborne acoustical noise. Part 1: general requirements
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| GB/T 4214-1984 | English | RFQ |
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Determination of sound power levels of noise emitted by household electrical appliances
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GB/T 4214.1-2017: Test method for noise of household and similar electrical appliances -- General requirements
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4214.1-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 17.140.20
Z 32
Replacing GB/T 4214.1-2000
Test method for noise of household and similar
electrical appliances - General requirements
(IEC 60704-1.2010, Household and similar electrical appliances - Test code
for the determination of airborne acoustical noise - Part 1.General
requirements, MOD)
Issued on. DECEMBER 29, 2017
Implemented on. JULY 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword... 5
Introduction... 8
1 Scope and object... 9
1.1 Scope... 9
1.2 Object... 10
1.3 Measurement uncertainty... 10
2 Normative references... 11
3 Terms and definitions... 12
4 Measurement methods and acoustical environments... 14
4.1 General... 14
4.2 Direct method... 14
4.3 Comparison method... 15
4.4 Acoustical environments... 15
5 Instrumentation... 16
5.1 Instrumentation for measuring acoustical data... 16
5.2 Instrumentation for measuring climatic conditions... 16
5.3 Instrumentation for measuring operating conditions... 16
6 Operation and location of appliances under test... 17
6.1 Equipping and pre-conditioning of appliances... 17
6.2 Supply of electric energy and of water or gas... 17
6.3 Climatic conditions... 18
6.4 Loading and operating of appliances during tests... 19
6.5 Location and mounting of appliances... 20
7 Measurement of sound pressure levels... 23
7.1 Microphone array, measurement surface and RSS location for essentially free field
conditions over reflecting plane(s)... 23
7.2 Microphone array and RSS location in hard-walled test rooms... 29
7.3 Microphone array and RSS location in special reverberation test rooms... 29
7.4 Measurements... 30
8 Calculation of sound pressure and sound power levels... 31
8.1 General... 31
8.2 Corrections for background noise levels... 31
8.3 Corrections for the test environment... 32
8.4 Calculation of sound pressure level averaged over the microphone positions... 32
8.5 Calculation of sound power levels with the comparison method... 33
8.6 Calculation of sound power levels in essentially free field conditions over a
reflecting plane... 34
8.7 Calculation of A-weighted sound power level with the direct method in special
reverberation test rooms... 34
9 Information to be recorded... 35
9.1 General data... 35
9.2 Description of appliance under test... 35
9.3 Measurement method... 35
9.4 Acoustical test environment... 35
9.5 Instrumentation... 36
9.6 Equipment and pre-conditioning of appliance under test... 36
9.7 Electric supply, water supply, etc... 36
9.8 Climatic conditions... 36
9.9 Operation of the appliance under test... 37
9.10 Location and mounting of the appliance under test... 37
9.11 Microphone array... 37
9.12 Measurement data... 37
9.13 Calculated sound pressure and sound power levels... 38
10 Information to be reported... 38
10.1 General data 9.1... 38
10.2 Appliance under test 9.2... 38
10.3 Test conditions for the appliance... 39
10.4 Acoustical data... 39
Annex A (Normative) Standard test table... 40
Annex B (Normative) Test enclosure... 41
Bibliography... 42
Foreword
GB/T 4214 “Test method for noise of household and similar electrical appliances”
consists of several parts. Part 1 is the general requirements. Other parts are
particular requirements.
This Part is Part 1 of GB/T 4214.
This Part is drafted in accordance with the rules given in GB/T 1.1-2009.
This Part replaces GB/T 4214.1-2000 “Acoustics - Household and similar
electrical appliances - Test code for determination of airborne acoustical noise
- Part 1.General requirements”. As compared with GB/T 4214.1-2000, in
addition to editorial changes, the main technical changes are as follows.
- For Clause 1 Scope, modify the scope of the appliance not applicable;
- ADD the term and definition of 3.10;
- ADD instructions for testing the parts of household appliances, including
loading and testing enveloping surface, etc. (See 6.2.5, 6.4.1, 7.1.4);
- Propose the test method for frequency-conversion household appliances
(See 6.4.1);
- Describe the installation of wall-mounted appliances in detail (See 6.5.4,
7.1.2);
- For the test of wall built-in appliance, GIVE a detailed description of the test
method and the test enclosure (See 6.5.5, Annex B);
- For the selection of hemispherical enveloping surface, MAKE a division and
description. The radius is not limited to 1.5 m and 2 m. For small appliances
and household appliance parts etc., a test radius of 1 m can be used (See
7.1.4);
- ADD a test method for the operational noise of non-stationary appliances
(See 7.4.1);
- Modify the provisions for corrected value of background noise (See 8.2).
This Part uses redraft law to modify and adopt IEC 60704-1.2010 (Edition 3.0)
“Household and similar electrical appliances - Test code for the determination
of airborne acoustical noise - Part 1.General requirements”.
As compared with IEC 60704-1.2010, the main technical differences in this Part
and their reasons are as follows.
- About normative references, this Part has made adjustments with technical
differences, to adapt to the technical conditions of China. The adjustments
are reflected in Clause 2 “Normative references”, as follows.
Replace IEC 61260.1995 with GB/T 3241-2010 which modifies and
adopts the international standard;
Replace ISO 3744.1994 with GB/T 3767-1996 which is not equivalent
to the international standard.
- For Clause 1 Scope, modify the scope of the appliance not applicable.
Reason. Household and similar air conditioners are covered by this
Standard.
- ADD the term and definition of 3.10.Reason. This term appears in 7.4.1.
- ADD instructions for testing the parts of household appliances, including
loading and testing enveloping surface, etc. (6.2.5, 6.4.1, 7.1.4). Reason.
Define the test method for parts of household appliances.
- Propose the test method for frequency-conversion household appliances
(6.4.1). Reason. Define the test method for frequency-conversion
household appliances.
- Describe the installation of wall-mounted appliances in detail (7.1.2).
Reason. Define the installation of wall-mounted appliances.
- For the selection of hemispherical enveloping surface, MAKE a division and
description. The radius is not limited to 1.5 m and 2 m. For small appliances
and household appliance parts etc., a test radius of 1 m can be used (7.1.4).
Reason. Define the method of selecting a hemispherical enveloping surface.
- ADD a test method for the operational noise of non-stationary appliances
(7.4.1). Reason. Define the test method for the operational noise of non-
stationary appliances.
- CORRECT the mis-presentation of the comparison-method calculation
formula in 8.5.Reason. Corrigendum.
- Delete Annex C. Reason. This Standard does not use the contents of Annex
C.
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. The issuing authority of this document shall
not be held responsible for identifying any or all such patent rights.
This Part was proposed by China National Light Industry Council.
This Part shall be under the jurisdiction of National Standardization Technical
Committees on Household Electric Appliances (SAC/TC 46).
The previous editions of the standard replaced by this Part were released as
follows.
- GB/T 4214.1-2000;
- GB/T 4214-1984.
1 Scope and object
This Part of GB/T 4214 applies to electric appliances (including their
accessories or components) for household and similar use, supplied from
mains or from batteries.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 3241-2010 Electroacoustics - Octave-band and fractional-octave-band
filters (IEC 61260.1995, MOD)
GB/T 3767-1996 Acoustics - Determination of Sound Power Levels of Noise
Sources Using Sound Pressure - Engineering Method in an Essentially Free
Field over a Reflecting Plane (eqv ISO 3744.1994)
GB/T 3785.1-2010 Electroacoustics - Sound level meters - Part 1.
Specifications (IEC 61672-1.2002, IDT)
GB/T 4129-2003 Acoustics - Requirements for the performance and
calibration of reference sound sources used for determination of sound
power levels (ISO 6926.1999, IDT)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Terms and definitions pertinent to the determination of sound power levels may
be found in GB/T 3767-1996, GB/T 6881.2-2002, GB/T 6881.3-2002.
3.1 Measurement time interval
Portion or a multiple of an operational period or operational cycle for which the
sound power levels are determined.
3.2 Operational period
An interval of time during which a specified process is accomplished by the
appliance under test (for example washing or rinsing or drying for a dishwasher)
4 Measurement methods and acoustical environments
The total noise emitted by machinery or equipment and radiated in all directions
to the space surrounding the machine can be characterized by the sound power
of the machine. The sound power of a machine is essentially independent of
the environment in which the machine is installed. Therefore, the concept of
sound power level has been chosen for expressing the noise emission of
appliances for household and similar purposes.
5 Instrumentation
Requirements for the instrumentation system and for its calibration are given in
Clause 5 of GB/T 6881.2-2002, GB/T 6881.3-2002 and GB/T 3767-1996.
The instrumentation system shall meet the requirements for a type 1 instrument
laid down in GB/T 3785.1-2010, according to the basic standard used. For
measurements in octave bands, the instrumentation system shall meet the
requirements of GB/T 3241-2010.
6 Operation and location of appliances under test
The appliance is equipped with attachments, accessories, etc. as
delivered by the manufacturer for the intended use or function.
Appliances with mains powered electric motor(s) are supplied at rated
voltage and at rated frequency.
7 Measurement of sound pressure levels
The requirements of 7.1 to 7.4 of GB/T 3767-1996 shall be followed. Unless
otherwise specified in the particular requirements, the measurement surface
and microphone array in the particular requirements are specified as follows.
For a particular family of appliances, only one of the following two measurement
surfaces can be selected; the microphone can only select one of several
microphone arrays and one of the possible microphone arrays.
8 Calculation of sound pressure and sound power levels
For measurements in hard-walled test rooms, the requirements of 7.8 and
Clause 8 of GB/T 6881.2-2002 shall be followed. For measurements in special
reverberation test rooms, the requirements of 7.8 and Clause 8 of GB/T 6881.3-
2002 shall be followed.
If the background noise levels, Lp", are more than 6 dB below the measured
sound pressure levels, Lp', the values of Lp' shall be corrected to take into
account the influence of background noise.
9 Information to be recorded
Name and address of the laboratory where measurements are carried out.
File number and date(s) of measurements.
Name and address of the company, organisation or person, who ordered
the measurements.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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