GB/T 10586-2025 (GB/T 10586-2006) PDF English
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Specifications for damp heat testing chambers
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Specification for damp heat testing chambers
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GB/T 10586-2006: Specification for damp heat testing chambers---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/GBT10586-2006
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 190.040
N 04
GB 10586-2006
Replacing GB/T 10586-1989
Specifications for Damp Heat Testing Chambers
Issued on. APRIL 03, 2006
Implemented on. OCTOBER 01, 2006
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 6
4 Conditions of Use... 7
5 Technical Requirements... 9
6 Test Methods... 10
7 Inspection Rules... 18
8 Marking, Packaging and Storage... 20
Appendix A (Informative) Judgment Methods of Suspicious Data... 22
Appendix B (Informative) Evaluation on the Measurement Uncertainty of
Temperature Deviation... 24
Foreword
This Standard was one of the serial standards of “Specifications for Environmental Test
Equipment”. Such serial standards consist of the following standards.
--- GB/T 10586-2006 Specifications for Damp Heat Chambers;
--- GB/T 10587-2006 Specifications for Salt Mist Testing Chambers;
--- GB/T 10588-2006 Specifications for Mould Growth Testing Chambers;
--- GB/T 10589-1989 Specification for Low Temperature Test Chambers;
--- GB/T 10590-2006 Specifications for High and Low Temperature/Low Air
Pressure Testing Chambers;
--- GB/T 10591-2006 Specifications for High Temperature/Low Air Pressure Testing
Chambers;
--- GB/T 10592-1989 Specification for Low/High Temperature Test Chambers;
--- GB/T 11158-1989 Specification for High Temperature Test Chambers.
This Standard replaced GB/T 10586-1989 Specification for Damp Heat Test Chambers.
Compared with GB/T 10586-1989, this Standard has the major technical changes as
follows.
a) This standard adds a Clause "Terms and Definitions"; and the content adopts the
relevant parts of IEC 60068-3-5 and IEC 60068-3-6;
b) According to the concept of temperature fluctuation in IEC 60068-3-5, the
temperature fluctuation index is changed into 1°C (see Table 1 of this Edition);
c) According to the requirements of temperature data recording in IEC 60068-3-5,
the data is changed to record every minute (see 6.4 of this Edition);
d) According to the temperature-rise rate test method in IEC 60068-3-5, modify the
temperature-rise rate test method (see 6.4.3.8 of this Edition);
e) The range of atmospheric pressure has been expanded in the environmental
conditions of use (see 4.1 of this Edition);
f) Propose the requirements for the quality of cooling water (see 4.3a) of this Edition);
g) Expand the temperature and humidity adjustment range of Class-II products (see
Table 1 of this Edition);
h) Add the requirements for electrical insulation strength (see 5.3.1 of this Edition);
i) The test of temperature and humidity performance is changed to be carried out
under no-load conditions (see 6.2.2 of this Edition);
j) Add the evaluation method and application information of the uncertainty for
measurement of temperature deviation (see Appendix B of this Edition).
The Appendixes A and B of this Standard are informative.
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of Instrumentation Technology and
Economy Institute, P.R.C.
Drafting organizations of this Standard. Shanghai Espec Environment Equipment Co.,
Ltd.; Chongqing Yinhe Testing Instrument Co., Ltd.; Guangzhou Electric Apparatus
Research Institute; and Chongqing Wanda Instrument Co., Ltd. Participating drafting
organizations of this Standard. Wuxi Sunan Test Equipment Co., Ltd.; Shanghai
Laboratory Instrument Works Co., Ltd.; and Chengdu Tianyu Test Equipment Co., Ltd.
Chief drafting staffs of this Standard. Lu Liming, Xu Qinglu, Liao Qing, Chen Yunsheng,
Ni Yiming, Feng Mingkang, and Kuai Zhengxin.
The historical edition replaced by this Standard is as follows.
--- GB/T 10586-1989.
Specifications for Damp Heat Testing Chambers
1 Scope
This Standard specifies the terms and definitions, conditions of use, technical
requirements, test methods, inspection rules and marking, packaging, and storage of
damp heat test chambers (hereinafter referred to as "test chambers").
This Standard is applicable to test chambers that conduct damp heat tests on electrical,
electronic and other products, parts and materials.
2 Normative References
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigendum) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB/T 191-2000 Packaging - Pictorial Marking for Handling of Goods (eqv ISO
780.1997)
GB/T 2423.3-1993 Basic Environmental Testing Procedures for Electric and
Electronic Products - Test Ca. Damp Heat, Steady State (eqv IEC 60068-2-3.1984)
3 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1 Test chamber
An enclosed box or space, thereof, some parts meet the specified test conditions.
3.2 Temperature setpoint
The desired temperature that is set by the test chamber control device.
3.3 Achieved temperature
After stabilization, the temperature at any point in the working space of the test
chamber.
3.7 Temperature gradient
After stabilization, in any time interval, the maximum value of the difference between
the average temperature of any two points in the working space.
3.8 Temperature rate of change
The rate of transition between two given temperatures measured in the centre of the
working space, in °C/min.
3.9 Temperature variation in space
After stabilization, in any time interval, the difference between the average temperature
of the centre of the working space and the average temperature of other points in the
working space.
4 Conditions of Use
4.1 Environmental conditions
4.2 Power supply conditions
4.3 Water supply conditions
4.4 Test load conditions
The test load shall meet the following conditions at the same time.
5 Technical Requirements
5.1 Product performance
The test chamber is divided into two types. Class-l and Class-II according to its
performance. See Table 1 for its performance indicators.
5.2 Product structure and appearance requirements
5.2.1 The inner wall of the working chamber shall be made of corrosion-resistant
materials; and the surface shall be easy to clean.
5.2.8 Appearance coating layer shall be flat and smooth, with uniform colour, and there
shall be no traces of exposed bottom, blistering, layering or scratching.
5.3 Safety and environmental protection requirements
5.3.1 The insulation resistance value between the terminal and the metal shell of the
chamber shall satisfy. more than 2MΩ in cold state, more than 1MΩ (measured by
500V megohmmeter with accuracy of Grade-1.0) in hot state; and can withstand the
voltage-withstand test with 50Hz AC voltage 1500V and the voltage time of 5s.
5.3.2 The protective grounding terminal shall have a good electrical connection with
the shell of test chamber; and be able to be easily and firmly wired; and shall meet the
requirements of 7.1.9 of GB/T 14048.1-2000.
5.3.3 There shall be protection and alarm devices for over temperature, over current,
water shortage, etc.
6 Test Methods
6.1 Main test instruments and devices
6.1.1 Anemometer
The induction volume of the anemometer shall be no less than 0.05 m/s.
6.3 Location and number of test points
6.3.1 Three horizontal test surfaces, called upper, middle and lower layers, are set in
the working room of the test chamber. The distance between the upper layer and the
top surface of the working room is 1/10 of the height of the working room; the middle
layer passes through the geometric centre of the working room; and the lower layer is
10mm above the sample rack of the lowest layer.
6.3.3 The relationship between the number of test points and the volume of the working
chamber is.
6.4.2.2 Measure the wind speed at the relative humidity test points (see 6.5).
6.4.2.3 Make the temperature of the working space reach 25°C ± 3°C; and keep the
relative humidity between 45% and 75%.
6.4.2.4 Within 1h, make the relative humidity of the working space no less than 95%.
6.4.2.5 Make the temperature and humidity of the working space continuously change,
according to the procedure given in Figure 2 of GB/T 2423.4-1993, in four stages of
"temperature rise - high temperature and high humidity – temperature fall - low
temperature and high humidity"; and the test is carried out according to the following
requirements.
6.4.3 Data processing and test results
6.4.3.1 Correct the measured temperature and humidity data according to the
correction value of the test instrument.
6.9 Inspection and evaluation method of condensation and water drop in the
working space
6.10 Appearance quality inspection and evaluation method
6.10.1 This inspection shall be carried out once before and after the test of 6.4,
respectively.
6.10.2 Visually inspect the quality of the coating on the appearance of the test chamber,
and the result shall meet the requirements of 5.2.8.
7 Inspection Rules
7.1 The inspection of the test chamber is divided into two categories. type inspection
and exit-factory inspection.
7.2 Type inspection
7.2.1 Type inspection shall be carried out in one of the following situations.
7.2.2 Type inspection items and test methods
The type inspection items and test methods are shown in Table 2.
Table 2 -- Inspection Items and Test Methods
7.2.3 Sampling and judgment rules
7.3 Exit-factory inspection
7.3.1 The exit-factory inspection is responsible by the quality inspection department of
the manufacturer.
7.3.2 This inspection is carried out under no-load conditions.
7.3.3 Inspection items and test methods
7.3.3.1 The inspection items and test methods are shown in Table 2.
7.3.3.2 Except for sampling inspection for temperature gradient and temperature
tolerance, other items shall be inspected one by one; and all inspection items shall be
qualified.
7.3.4 Sampling and evaluation rules
Temperature gradient, temperature fluctuation,
7.3.4.1 The exit-factory sampling quantity of temperature gradient and temperature
tolerance is calculated based on 10% of the product batch size, but no less than 2 sets.
8 Marking, Packaging and Storage
8.1 Marking
8.1.1 The nameplate and handwriting of the test chamber shall be clear and durable,
and fastened firmly.
8.1.2 The contents of the nameplate shall include.
8.2 Packaging
8.2.1 The text and marking of the packing box shall comply with the provisions of GB/T
191-2000.
8.2.2 The packing box shall be firm and reliable.
8.2.3 The packing box shall be protected from rain and moisture accumulation.
8.3 Storage
8.3.1 The transport packages of the test chamber shall be stored in a well-ventilated
warehouse without corrosive gases and chemicals.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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