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GB/T 2423.35-2019 English PDF (GBT2423.35-2019)

GB/T 2423.35-2019 English PDF (GBT2423.35-2019)

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GB/T 2423.35-2019: Environmental testing - Part 2: Tests and guidance - Combined climatic (temperature / humidity) and dynamic (vibration / shock) tests

GB/T 2423.35-2019
Environmental testing--Part 2. Tests and guidance--Combined climatic (temperature/humidity) and dynamic (vibration/shock) tests ICS 19.040
K04
National Standards of People's Republic of China
Replace GB/T 2423.35-2005, GB/T 2423.36-2005, GB/T 2424.22-1986
Environmental testing - Part 2. Tests and guidelines
Climate (temperature, humidity) and dynamics (vibration, shock)
Comprehensive test
Environmentaltesting-Part 2. Testsandguidance-
[IEC 60068-2-53.2010, Environmentaltesting-Part 2-53.
2019-06-04 released 2020-01-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction 1
1 range 1
2 Normative references 1
3 Test 1
3.1 General 1
3.2 Temperature information 2
3.3 Kinetic Test Information 2
3.4 Initial measurement and functional test 3
3.5 Working conditions of the sample 3
3.6 Mechanical conditions of the sample 3
4 final test 3
5 Information about the specification should be given 3
6 Test report should give information 4
Appendix A (informative appendix) Test sequence example 5
Appendix B (informative) Guidelines for comprehensive testing of climate and dynamics 9 Reference 11
Foreword
GB/T 2423 "Environmental Test Part 2" is divided into several parts according to the test method. This part is the 35th part of GB/T 2423.
This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 2423.35-2005 "Electrical and Electronic Products Environmental Test Part 2. Test Method Test Z/AFc. Scatter Low temperature/vibration (sinusoidal) comprehensive test of heat and non-heat test samples, GB/T 2423.36-2005 "Electrical and electronic products environmental test Part 2. Test Methods Test Z/BFc. High temperature/vibration (sinusoidal) comprehensive test for heat and non-heat test samples and GB/T 2424.22-1986 "Basic environmental test procedures for electrical and electronic products - Temperature (low temperature, high temperature) and vibration (sinusoidal) comprehensive test guide then". This part integrates the contents of GB/T 2423.35-2005, GB/T 2423.36-2005, GB/T 2424.22-1986, and The main technical changes are as follows.
--- Expanded the scope of the test, can make different vibration excitation (sinusoidal, random, mixed mode or impact) and different climate Conditions (low temperature, high temperature, temperature change, and constant or alternating damp heat) were tested comprehensively. --- For the specific details of the original standard test requirements, this section will not be described in detail. This section uses the translation method equivalent to IEC 60068-2-53.2010 "Environmental Testing Part 2-53. Tests and Guidelines Climate (temperature/humidity) and kinetic (vibration/shock) comprehensive test. The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows. ---GB/T 2421.1-2008 Overview and guidelines for environmental testing of electrical and electronic products (IEC 60068-1. 1988, IDT); GB/T 2423.1-2008 Environmental testing of electric and electronic products - Part 2. Test methods Test A. Low temperature (IEC 60068-2-1..2007, IDT);
--- GB/T 2423.2-2008 Environmental testing of electric and electronic products - Part 2. Test methods Test B. High temperature (IEC 60068-2-2.2007, IDT);
--- GB/T 2423.3-2016 Environmental testing - Part 2. Test method test Cab. constant damp heat test (IEC 60068-2-78. 2012, IDT);
--- GB/T 2423.4-2008 Environmental testing of electrical and electronic products - Part 2. Test methods Test Db. alternating heat (12h 12h cycle) (IEC 60068-2-30.2005, IDT);
--- GB/T 2423.5-2019 Environmental Test Part 2. Test Methods Test Ea and Guide. Impact (IEC 60068-2-27. 2008, IDT);
--- GB/T 2423.10-2019 Environmental test - Part 2. Test method test Fc. Vibration (sinusoidal) (IEC 60068-2-6. 2007, IDT);
--- GB/T 2423.22-2012 Environmental testing of electric and electronic products - Part 2. Test methods Test N. Temperature change (IEC 60068-2-14.2009, IDT);
--- GB/T 2423.56-2018 Environmental testing - Part 2. Test methods Test Fh. Broadband random vibrations and guidance (IEC 60068-2-64.2008, IDT);
--- GB/T 2423.58-2008 Environmental testing of electric and electronic products - Part 2-80. Test method test Fi. Vibration Mixed mode (IEC 60068-2-80.2005, IDT).
For ease of use, this section has made the following editorial changes. --- Modified the standard name.
--- Table 1 replaces "X" with "√".
This part is proposed and managed by the National Technical Committee for Environmental Conditions and Environmental Testing Standardization of Electrical and Electronic Products (SAC/TC8). This section drafted by. Ministry of Industry and Information Technology Electronics Fifth Institute, Shanghai Institute of Quality Supervision and Inspection Technology, Beijing Airlines Tian University.
The main drafters of this section. Chang Shaoli, Jie He, Jiang Can, Lu Zhaoming, Wu Hao. The previous versions of the standards replaced by this section are.
---GB/T 2423.35-1986, GB/T 2423.35-2005;
---GB/T 2423.36-1986, GB/T 2423.36-2005;
---GB/T 2424.22-1986.
introduction
When under different environmental conditions, there is no significant degradation in the performance of the specified equipment and components. The type and severity of the environment in which the equipment and components are tested depends on the work, transportation and storage environment. The impact of the environment on the equipment is hot The belt, subtropical region and the Arctic region are completely different. Individual parameters can cause large variations or overlapping effects on devices and components. Both manufacturers and users want equipment and components to withstand the various environments in which the product is exposed. In order to get in a relatively short period of time Obvious results, by increasing the severity of environmental conditions, you can expose the sample to a certain level in the laboratory in a short period of time. Evaluate under ambient environmental conditions. Therefore, it is possible to estimate a near-real test effect by applying similar environmental conditions. Especially in the automotive, rail transit and aerospace sectors, there is a comprehensive environment of temperature, humidity and vibration. Environmental testing - Part 2. Tests and guidelines
Climate (temperature, humidity) and dynamics (vibration, shock)
Comprehensive test
1 Scope
This part of GB/T 2423 provides methods and guidelines for the comprehensive testing of climate and dynamics of equipment or components. The purpose of the comprehensive test is to investigate the extent to which equipment or components are affected by a comprehensive climate and kinetic test. This comprehensive test method is suitable for inspecting electrical, mechanical or other physical changes. 2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. IEC 60068-1 Environmental Test Part 1. Overview and Guidelines (Environmentaltesting-Part 1. Generaland Guidance)
IEC 60068-2-1 Environmental test Part 2-1. Test methods Test A. Low temperature (Environmental testing-Part 2-1. Tests-TestA.Cold)
IEC 60068-2-2 Environmental test - Part 2-2. Test method Test B. High temperature (Environmental testing-Part 2-2. Tests-TestB. Dryheat)
IEC 60068-2-6 Environmental testing - Part 2-6. Test method test Fc. Vibration (sinusoidal) [Environmental testing-Part 2-6. Tests-TestFc. Vibration(sinusoidal)]
IEC 60068-2-14 Environmental testing - Part 2-14. Test methods Test N. Temperature change (Environmental testing- Part 2-14. Tests-TestN. Changeoftemperature)
IEC 60068-2-27 Environmental testing - Part 2-27. Test methods Test Ea and guide. Impact (Environmentaltes- ting-Part 2-27. Tests-TestEaandguidance. Shock)
IEC 60068-2-30 Environmental testing - Part 2-30. Test methods Test Db. Alternating damp heat (12h 12h cycle) (Environmentaltesting-Part 2-30. Tests-TestDb. Dampheat, cyclic (12h 12hcycle)) IEC 60068-2-64 Environmental testing - Part 2-64. Test methods Test Fh. Vibration, broadband random (digital control) and guidance Then [Environmentaltesting-Part 2-64. Tests-TestFh. Vibration, broadbandrandom (digitalcontrol) Andguidance]
IEC 60068-2-78 Environmental testing - Part 2-78. Test method test Cab. constant damp heat test (Environmental testing-Part 2-78. Tests-TestCab, Dampheat, steadystate)
IEC 60068-2-80 Environmental testing - Part 2-80. Test method test Fi. Vibration mixing mode (Environmental testing-Part 2-80. Tests-TestFi. Vibration-Mixedmode)
3 test
3.1 General
The parameters of the test include temperature, low temperature, dry heat, temperature change, vibration type, temperature exposure time, vibration duration, number of impacts, and rushing. The axial direction, working state, etc. of the repetition time, vibration or shock can be selected in the relevant part of IEC 60068-2 or related specifications. When selecting environmental conditions, the sample should be kept in electrical and mechanical properties under the selected storage, transportation and use conditions. Table 1 gives some comprehensive tests, which may not be implemented as follows. --- Sinusoidal vibration sweeps may not be fully completed during temperature changes or temperature cycling; --- The temperature stability of the dynamic nonlinear system, for example. the temperature change of the anti-vibration device or the vibration test of the temperature cycle; --- Complete cycle of mixed mode vibration test in temperature change or temperature cycle. Table 1 Comprehensive test approved by IEC standard
Climate test
Kinetic test
Shock
IEC 60068-2-27
Vibration (sine)
IEC 60068-2-6
Vibration (wideband random)
IEC 60068-2-64
Vibration (mixed mode)
IEC 60068-2-80
Low temperature
IEC 60068-2-1
√ √ √ √
high temperature
IEC 60068-2-2
√ √ √ √
temperature change
IEC 60068-2-14
√ √ √ √
Damp heat cycle
IEC 60068-2-30
√ √ √ √
Steady state damp heat
IEC 60068-2-78
√ √ √ √
In accordance with the standard climatic conditions of IEC 60068-1, the relevant specifications may stipulate that the test sample is to be transformed during the impact or vibration test. to. The kinetic test should be continued when the temperature and humidity required for the test are reached. 3.2 Temperature information
If a low temperature or high temperature test is specified, the exposure time is calculated from the difference between the temperature of all parts of the sample and the temperature of the working space. 3K begins. For heat-dissipating samples, unless the sample is in a constant temperature working space, the temperature does not change by more than 1K within 1h, otherwise it will not start counting. Time. The last hour of time to reach temperature saturation shall be considered the first hour of the exposure period. If a constant damp heat test is specified, the temperature of any part of the sample is within 3K of the test chamber working space and within 3% of the relative humidity. When, start to calculate the exposure time.
For the heat-dissipating sample, the temperature of the sample does not exceed 1K within 1h in the constant temperature working space, and the exposure timing begins. Reaching temperature The last hour of soaking should be considered the first hour of the exposure period. If a slow temperature change test or a damp heat cycle test is performed, the exposure time of the specified test is calculated from the start of the temperature change. If the test sample is mounted on an impact damper, the test should begin after the temperature of the damper component has stabilized. 3.3 Kinetic test information
The specification should contain the kinetic information of the test, including the following details (see also Chapter 5). a) characteristics of the kinetic test (eg sinusoidal, random, mixed mode vibration or shock); b) the severity level of the dynamic stress;
c) the axis and direction of the dynamic stress;
d) duration and timing of dynamic stress (see Appendix A);
e) The test sample should be installed in accordance with IEC 60068-2-47; f) Other details as required by the relevant standards.
3.4 Initial measurement and functional test
Visual inspection, size, function, and other inspections as required by the relevant specifications shall be performed on the test sample. 3.5 Working conditions of the sample
For live working samples, the relevant specifications shall specify the time at which the power supply is turned on or off and the supply voltage during each temperature cycle. Other functions, such as cooling, heating and various load conditions, when opening or closing, should be specified in the relevant regulations, or by special tests. Check the equipment for control.
3.6 Mechanical conditions of the sample
The mechanical condition test of each cycle of the sample is more suitable for the last hour of the high temperature section or the low temperature section, for example, when the limit temperature is reached. Before, or before, another comprehensive test of the relevant specifications. If the test sample is powered by a power supply, then the mechanical strip The connection status should be maintained during the process.
4 final test
The test sample should be visually inspected, sized, functionally and subject to other inspections as required by the relevant specifications. The relevant specifications should provide criteria for receipt or rejection of the test sample. 5 Information about the specification should be given
Where applicable, the specification should include the following.
a) the time of exposure under temperature conditions;
b) the rate of temperature change of the test chamber;
c) test temperature;
d) the number of temperature cycles;
e) a comprehensive test schedule;
f) vibration test severity level;
g) the number of cycles of the damp heat cycle,
h) the severity level of the impact test;
i) the axis and direction of the impact and/or vibration test;
j) working status;
k) the number of samples tested;
l) humidity, if there is a corresponding comprehensive test;
m) pretreatment;
n) the type and extent of the initial measurement;
o) working hours;
p) the type and extent of the intermediate measurement;
q) recovery;
r) the type and extent of the final measurement;
s) evaluation criteria;
t) Type and scope of the test report.
6 Test report should give information
When the relevant specification adopts this test, the author of the specification shall provide the materials as follows. a) customer (name and address);
b) laboratory (name, address and other qualification information);
c) the date of the test (the date on which the test was conducted);
d) type of test (type of vibration or shock, low temperature or high temperature, temperature gradual change, cycle of damp heat or constant); e) specified values (temperature, humidity, acceleration, frequency range, etc.); f) the purpose of the test (development, identification test, etc.);
g) standard number, version;
h) relevant laboratory procedures (codes and versions);
i) description of the test sample (drawings, photos, quantity composition, etc.); j) test box and vibration system identification (manufacturer, model, unique identification, etc.); k) performance of the test equipment (set point temperature control, set point acceleration control, air flow, etc.); l) wind speed and direction (the wind speed and direction that may be blown to the test sample); m) uncertainty of the measurement system (uncertainty data, including temperature stability of the sensitivity of the sensor); n) calibration date (last and next calibration date);
o) initial, intermediate and final measurements (initial, intermediate and final measurements); p) the severity of the regulation (from the relevant specifications);
q) test severity (measurement points, data, etc.);
r) the performance of the test sample (the result of the functional test, etc.); s) information observed during the test and measures taken (all relevant observations); t) test summary (test summary);
u) Issue (issue list).
Appendix A
(informative appendix)
Test sequence example
Figures A.1 to A.4 show the combination of climatic conditions (temperature and/or humidity), kinetic conditions (vibration or shock) and electrical load conditions. order.
Description.
T --- the specified temperature;
T1 --- the temperature is not stable;
T2~t13 --- temperature stable period;
T2~t6, t8~t10, t12---any type of vibration or shock time;
T3, t5, t7, t9, t11 --- electric load or function detection time.
Figure A.1 Example of sequence with low temperature or damp heat test
Description.
T1 --- prescribed low temperature;
T2 --- the specified high temperature;
T1 --- temperature is not stable time;
T2 --- temperature changes from T1 to T2, unsteady time;
T3, t4 --- high temperature stable temperature time;
T5 --- temperature changes from T2 to T1 time;
T6, t7 --- low temperature stable temperature time;
T8 --- temperature changes from T1 to T2 time;
T9, t10 --- high temperature stable temperature time;
T11 --- temperature changes from T2 time;
T12, t13 --- low temperature stable temperature time;
T2~t6, t8~t10, t12---any type of vibration or shock time;
T3, t5, t7, t9, t11 --- electrical load or function detection time.
Figure A.2 Example of test sequence with slow temperature change
Description.
Rh --- the specified relative humidity;
T1 --- prescribed low temperature;
T2 --- the specified high temperature;
T1 --- temperature and humidity have not stabilized time;
T2, t3 --- temperature changes from T1 to T2 time;
T4~t7 --- high temperature stable temperature time;
T8, t9 --- temperature changes from T2 to T1 time;
T10~t13 --- low temperature stable temperature time;
T3, t4, t7~t9, t11---any type of vibration or shock time;
T3, t5, t7, t9, t11 --- Electrical load or function detection timing.
Note. The humidity does not remain stable during temperature changes. Re-stabilize within 3% before reaching the next step. Figure A.3 Example of a test sequence with a damp heat cycle
Description.
Rh --- the specified relative humidity;
t --- the specified temperature;
T1 --- temperature and humidity have not stabilized the time period;
T2~t3, t7~t8, t11~t12--- apply any type of vibration or shock time period; T3, t5, t7, t9, t11 --- Electrical load or function detection timing.
Figure A.4 Example of a test sequence with constant damp heat
Appendix B
(informative appendix)
Comprehensive test guidelines for climate and dynamics
B.1 General
This guide is based on different parts of IEC 60068 and provides basic application for temperature and/or humidity and vibration or shock testing. Explanation.
In the case of comprehensive tests, IEC 60068-1 "Environmental Test Part 1. Overview and Guidelines" shall be optimized with the releva...

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