GB/T 2423.38-2021 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 2423.38-2021 | English | 635 |
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Environmental testing - Part 2: Test methods - Test R: Water test method and guidance
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| GB/T 2423.38-2008 | English | RFQ |
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Environmental testing for electric and electronic products - Part 2: Test methods - Test R: Water test method and guidance
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| GB/T 2423.38-2005 | English | RFQ |
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Environmental testing for electric and electronic products - Part 2: Test methods - Test R: Water test methods and guidelines
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| GB/T 2423.38-1990 | English | 519 |
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Basic environmental test procedures for electric and electronic products - Test R: Water test method
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GB/T 2423.38-2021: Environmental testing - Part 2: Test methods - Test R: Water test method and guidance
---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/GBT2423.38-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 19.040
CCS K 04
GB/T 2423.38-2021 / IEC 60068-2-18.2017
Replacing GB/T 2423.38-2008
Environmental testing - Part 2.Test methods -
Test R. Water test method and guidance
(IEC 60068-2-18.2017, Environmental testing - Part 2-18.Tests -
Test R and guidance. Water, IDT)
Issued on. MAY 21, 2021
Implemented on. DECEMBER 01, 2021
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
Introduction... 5
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 6
4 Survey of water tests... 8
5 Test Ra. falling drops... 9
6 Test Rb. impacting water... 16
7 Test Rc. immersion... 29
Annex A (Informative) Water characteristics to be considered when writing the
relevant specification... 34
Annex B (Informative) General guidance... 37
Annex C (Informative) Guidance for test Ra... 38
Annex D (Informative) Guidance for test Rb... 43
Annex E (Informative) Guidance for test Rc... 55
Annex NA (Informative) Constituent documents of GB/T 2423... 56
Bibliography... 60
Foreword
This document is drafted in accordance with GB/T 1.1-2020 "Directives for
standardization - Part 1.Rules for the structure and drafting of standardizing
documents".
This document is Part 38 of GB/T 2423.For the issued parts of GB/T 2423, see
Annex NA.
This document replaces GB/T 2423.38-2008 "Environmental testing for electric
and electronic products - Part 2.Test methods - Test R. Water test method and
guidance". Compared with GB/T 2423.38-2008, in addition to structural
adjustment and editorial changes, the main technical changes are as follows.
a) Add test method Rb 3.fan jet nozzle (see 6.4);
b) Add test guidance for test method Rb 3.fan jet nozzle (see D.2.3).
This document, using translation method, is identical to IEC 60068-2-18.2017
"Environmental testing - Part 2-18.Tests - Test R and guidance. Water".
This document has mainly made the following editorial changes.
a) Change the name of this document to "Environmental testing - Part 2.Test
methods - Test R. Water test method and guidance";
b) Add an annex "Constituent documents of GB/T 2423" (see Annex NA).
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 document was proposed by and shall be under the jurisdiction of National
Technical Committee 8 on Environmental Conditions of Electric and Electronic
Products and Environmental Test of Standardization Administration of China
(SAC/TC 8).
Drafting organizations of this document. China National Electric Apparatus
Research Institute Co., Ltd.; Tsinghua Shenzhen International Graduate School;
AVIC Changcheng Metrology & Measurement (Tianjin) Co., Ltd.; Guangzhou
Power Supply Bureau of Guangdong Power Grid Co., Ltd.; Zhejiang Province
Institute of Metrology; Wuxi Soyater Test Equipment Co., Ltd.; Wuxi Sunan
Experimental Equipment Co., Ltd.; Nanjing Wuhe Test Equipment Co., Ltd.;
Electric Power Research Institute of Hainan Power Grid Co., Ltd.; CVC
Certification & Testing Co., Ltd.; CCIC Southern Testing Co., Ltd.; Shenzhen
Polytechnic; Fujian Xinneng Offshore Wind Power R&D Center Co., Ltd.;
Hainan Power Grid Co., Ltd.; Shinry Technologies Co., Ltd.; South China
University of Technology.
Main drafters of this document. Wang Jun, Xu Xuedong, Jia Zhidong, Lv Guoyi,
Feng Wenxi, Mo Wenxiong, Zhang Hongyu, Zhou Zhongming, Ni Yangyi,
Zhang Dinghu, Zhang Ruien, Che Hansheng, Deng Chuntao, Wang Xintao,
Huang Xiangsheng, Fang Lianhang, Gao Jun, Wang Xilin, Huang Qingdan,
Zeng Chen.
The previous releases of this document and the documents it replaces are as
follows.
- It was first issued in 1990 as GB/T 2423.38-1990;
- When it was first revised in 2005, the content of GB/T 2424.23-1990 "Basic
environmental test procedures for electric and electronic products -
Guidance for water test" was incorporated;
- It was second revised in 2008;
- This is the third revision.
1 Scope
This document provides methods of test applicable to products which, during
transportation, storage or in service, can be subjected to falling water drops,
impacting water, immersion or high pressure water impact. The purpose is to
verify the ability of enclosures, covers and seals to maintain components and
equipment in good working order after and during testing.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardisation at
the following addresses.
4 Survey of water tests
The water tests are structured into three groups.
- Ra. "falling drops" which, in principle, is a test with artificial rain and a test
simulating falling drops from condensation or leakage.
- Rb. "impacting water" where water jets impinge upon the test specimen
with a certain force and may assume any angle towards the test specimen.
5 Test Ra. falling drops
The water used for the test shall be fresh tap water of good quality. In order
to avoid clogging of the nozzles, the water shall be filtered and may be
demineralized. Details of the characteristics of the water are given in Annex
A. During the test, the water temperature shall not differ by more than 5 K
from the temperature of the specimen under test. If the water temperature
is more than 5 K below the temperature of the specimen, a pressure
balance shall be provided for the specimen.
Where this test is included in the relevant specification, the following details
shall be given in so far as they are applicable. The relevant specification shall
supply information as required in the subclauses listed below, paying particular
attention to the items marked with an asterisk (*) as this information is always
required.
6 Test Rb. impacting water
Preconditioning of the specimen and seals shall be carried out if specified in
the relevant specification.
The specimen shall be submitted to the visual, dimensional and functional
checks specified in the relevant specification. All features of the specimen likely
to affect the test result, such as surface treatment, enclosures, covers or sealing,
shall be inspected to ensure that the instructions of the relevant specification
have been followed.
7 Test Rc. immersion
The specimen shall be submitted to the visual, dimensional and functional
checks specified in the relevant specification. All features of the specimen likely
to affect the test result, such as surface treatment, enclosures, covers or sealing,
shall be inspected to ensure that the instructions of the relevant specification
have been followed.
The specimen shall be placed in the position as specified in the relevant
specification and shall be completely immersed in a pressurized water chamber.
A water soluble dye such as fluorescein may be added to the water in order to
facilitate indication of leakage.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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