This standard is used to determine the adaptability of electrical and electronic products, mainly referring to the adaptability of equipment to use and storage under high temperature conditions. This test is mainly used to observe the effects of test samples under constant temperature, no condensation, specified time and high humidity environment. This test has several different severity levels of temperature, humidity and test duration for selection. This test can be used for heat dissipation and non-heat dissipation test samples. This test is particularly suitable for large equipment or equipment that may have complex connections with test equipment outside the test room during the test. This connection requires a certain amount of assembly time. During installation, preheating or maintaining specific test conditions is not required. GB/T 2423.9-2001 Environmental testing for electrical and electronic products Part 2: Test method Test Cb: Constant damp heat for equipment GB/T2423.9-2001 Standard download decompression password: www.bzxz.net

ICS19.040
National Standard of the People's Republic of China
GB/r2423.9..2007
idt IEC 60068-2-56: 1988
Environmental testing for electric and electronic products
Part 2: Test methods
Test Cb: Damp heat for equipment
Environmental testing for electric and electronic products-Part 2: Test methods-Test Ch:Damp hcat.steady state.primarilyfor equipment2001-11-02Promulgated
People's Republic of China
National Quality Supervision, Inspection and Quarantine General Post Office
2002-06-01Implementation
GH/T 2423. 9—2001
IEC pre
IEC department
Requirements for test boxes (rooms)
Severity level
Initial test
Companion test
Intermediate test
Final test
Contents given in relevant specifications.
GB/I2423.9-2001
This standard adopts the International Electrotechnical Commission standard IF60068-2-: 1988 (1st edition 3 Environmental test Part 2: Test Test Cb: Section spare memory constant sensible heat 3.
GB/T2423.3-198 Basic environmental test for electrical and electronic products b: Design cabinet fixed diffuse test method is equivalent to the national end of the electrical.1 Committee standard LEC:58255 (draft) environmental test Part 2 test test Ch: constant damp heat (half the use of Ding to answer leather.
This standard is in technical content, writing method and film sequence 1E℃60068-2-5%:1 988. The relevant standard revision information after 1983 has been replaced in this standard accordingly.
According to GB/T1.1-Guidelines for Standardization-Part 1: Basic Provisions for Standardization, the relevant provisions of international standards are adopted. This standard only makes some minor changes in the writing format.
The standard is implemented at the same time as GB/2423.!-1089 This standard is issued by the China Electrical Equipment Industry Association. This standard was drafted by the National Technical Committee for Environmental Testing of Electrical Products under the National Electrotechnical Industry (National Electrotechnical Commission). The drafting unit of this standard is Guangzhou Electric Science Research Institute. The main authors of this standard are Zhang Qiubin and Zhang Zhi. CB/T2423.9--2001
IEC Preface
1) IEC's formal resolutions and agreements on technical issues are formulated by technical committees represented by all national committees that have a special interest in the issue. It expresses the international consensus on the issues discussed as much as possible. 2) These releases are only recommended or provided for international use and are accepted by all national committees in this sense. 3) In order to promote international unification, it is hoped that all national committees will use the standards promoted by the International Electrotechnical Commission as national standards in cases where their national conditions allow. When there is a disagreement between the national standard and the standard, it should be clearly indicated in the national standard as much as possible.
GB/T 2423 920D1
IEC Sequence Number
This standard is formulated by IEC.TCS0 (Environmental Testing Technical Standards) 501 (Atmospheric Testing Technical Standards). This standard is based on the following documents:
5UB (Central Office) 264
Voting Report
5CB (China Testing Office>2
Voting Requirements All voting information for this standard can be found in the voting report. This standard quotes IEC standards: 11
Publication No., 60068-1.1188, Environmental Testing, Part 1: General 60068-2-2;1974: Part 2: Test, G006R.2-3;1969: Part Part 2: Test Test C: Constant intensity heat Instructions, GB/24211599 etc. IEC6006511388:C12122.2-261 Equivalent: 6637:1174 GB/T2122.2-1593 1E:6K3823-166 National Standard of the People's Republic of China Environmental testing for electric and electronic products Part 2: Test method Test method for steady intensity heat for equipment Environmental test for electric and electronic products-Iart2rTestmethudy-Test Ch, Dunp bcatsicady state-primarily for equipment1 Scope GE/T2423.9-2001 1EC 60068-2-56:1988
This standard determines the adaptability of electrical and electronic products, mainly equipment used and stored under high humidity conditions. This test is mainly used to observe the effects of test samples in a certain temperature, no condensation, and humidity environment after a specified time. This test is effective for sample selection based on the severity of humidity, test duration, and test duration. Car test heat-resistant and non-heat-resistant test samples: This test is particularly suitable for large equipment or equipment that may have loose connections with test devices outside the test site during the test. This connection requires a certain amount of time to be installed, and during installation, no specific test components need to be pre-set or maintained. 2 Overview
During the test: the test samples and the test chamber (room) are all room groups. The test samples are put into the test chamber (room) and the test parts in the small test chamber (room) are adjusted according to the strict requirements of the requirements in Chapter 1 and kept for the specified time. The temperature near the sensitive heat test sample is significantly different from the specified test value. Therefore, for most of these quantities, the method used in the white air condition should be used (see 4.4 and 4.6.2 in GB/T2421-199S). GB/2123.3-1993 Test C: Non-condensing conditions in constant damp heat are obtained by preheating the test samples before they enter the test chamber. In this test, the test samples are put into the test chamber (room) under room conditions and then heated to the specified temperature. The test process is carried out under the condition of no condensation! . 3 Requirements for test chamber (heavy)
3.1 Test chamber (room) shall meet the following requirements
1) The temperature of the test chamber (room shall be measured by sensors installed in the working space. The heat dissipation test shall be carried out on the samples. The installation position of the sensors shall be in accordance with 4.6.2 of G52421-1599;) 1 The humidity and temperature of the working space shall be constant within the nominal value and the specified tolerance range. The product must also be tested in a professional manner during the test!
Note, 4. The group error in the standard includes the measurement error and the slow change of temperature: 10. For non-thermal test products, to ensure the uniformity of the workroom, in order to ensure strict compliance, it is necessary to keep the difference between any two points in the working space within any narrow range, and leave more than 1 (if the required temperature is not obtained, the short-term temperature fluctuation must also be kept within the normal range. For heat-sensitive test samples, the test samples are affected by the heat sensitivity of the test samples themselves. The temperature is close to the test sample. This standard 3.1a? The caliper is the effective position of the measurement symbol.
National Quality Supervision, Inspection and Quarantine Bureau of the People's Republic of China 201-1102 batch treatment 2002-6-01 implementation
CB/T 2423.9—2001
c) Condensation water should be discharged out of the box (room) and can only be quickly discharged after purification. d) Condensation on the walls and ceilings should never fall on the test samples. L) The resistivity of the water used to maintain the humidity in the box should not be less than 10%. f) The test samples should not be directly exposed to the potential and radiation of the components in the test box (room). For spray-type test boxes, the moisture should be kept away from the test samples and should not be sprayed onto the surface of the test samples. 3.2 The area of ​​the test box (chamber) for heat dissipation test samples shall be at least 5 times the total area of ​​the test products. The distance between the test sample and the test wall shall be selected in accordance with the provisions of Appendix A of 2123.2201 (Standard Appendix). The wind speed in the box (chamber) shall not exceed [.0m/s. 33 Installation of test products The structure of the mounting frame or support of the test sample shall be as close as possible to the actual parts in use. If there are no other provisions.The sample mounting frame should minimize the influence of heat and air exchange between the test rod and the same air. The relevant standard can also specify a special mounting frame: 4 Severe test severity level test intensity, accuracy and test time composition, and issue relevant specifications to specify. The combination of temperature and plate accuracy can be selected from the following values ​​3% + 3%
30 ± 2℃
10:1:2℃
40c±2
Recommended position adjustment time: 2.4-10,21.
5 Initial inspection
Test samples according to the relevant specifications for reverse appearance inspection and electrical performance and mechanical performance testing: 6 Condition test
6.1 Test precision (room) at the bottom of the test room ten centimeters below the seat. The test samples of the objects under the test room environment are placed in the test chamber (in the normal position or other specified position without packaging, without power, ready for use) in the unpackaged, unpowered state. In this case (for example, the use of a large test chamber), the relevant specifications may allow the test samples to be directly placed in the test chamber (empty chamber) that has been tested under these conditions. However, it is necessary to prevent the test samples from being exposed to 6.2. The temperature of the test chamber (room) shall be set to the specified level before production, and the temperature shall be guaranteed before operation. Note: The definition of special conditions is given in 4.x of 1712421999. The average rate of change shall not exceed 1C/rmin within 5min, and the test cannot be carried out in this period. Condensation is generated on the product. Note: To prevent condensation, the temperature should not be increased during this period. 6.3 Then adjust the temperature to the specified temperature within 2b. 6.4 The test sample is tested under the test conditions. The test time is calculated according to the test time specified in the relevant regulations. After the specified conditions are reached. 6.5 If required by the relevant specifications, the test sample can be powered on and/or operated during the conditional test phase: The relevant specifications shall specify the working conditions and working time of the test sample during the test period (or network period). 6.6 At the end of the conditional test: The test sample is still in the test box (room), and the box (room) is adjusted to the standard atmospheric conditions of the test. The relative temperature is reduced first, and the time does not exceed 10,000. The rate of temperature and pressure change in the test box (room) shall not exceed 1 °C/min. CB/T 2423. 9 -- 201
During the temperature test period, the relative temperature shall not exceed 75 °C. During the fire condition test, some products shall enter the recovery process (Chapter &). In some cases (for example: the test policy of large plastics in Shenzhen) the relevant specifications may allow the test products to be directly taken out of the test box in the test state and then proceed with the rapid sequence. 7 Intermediate test
The relevant specification may propose that the test samples are still inspected in the test box (room) during or at the end of the condition test. If such inspection is required, the relevant specifications shall specify the inspection items and the time to complete these inspections. When conducting such inspection, the test samples shall not be taken out of the test box. 8 Recovery
8.1 Relevant current standards may stipulate that the test is to be carried out under standard atmospheric conditions (5.3 of GB/T 2421-199) or under controlled recovery conditions (5.4.1 of GB/T 2221-15S). If the specific requirements require recovery treatment under the condition of the pad recovery, the test sample shall be transferred to the blade test (or the original wet heat test chamber (child) for testing. The two test chamber method is recommended. The transfer time of the test sample should be as short as possible. If a single-trace heat test chamber is used, the condition in the test chamber (pull) shall be adjusted to 73%~77% within 0.51, and then the condition shall be adjusted to the test temperature within (.51), with an error of 1:. For large test poles, the adjustment time is allowed to be longer. The recovery time is calculated from the time when the specified fast point condition is reached (1~2). The time for the test sample with a large thermal time constant to be fast treated should be enough to allow it to reach temperature stability (C:TT2421-1S991. 3.
3 If the above standard conditions do not meet the test sample, the relevant specification can be used to specify the recovery conditions. After the test, the product should be inspected according to the relevant specifications. The electrical and mechanical properties should be inspected. The difference should be within the relevant specifications. When this test method is used in the relevant specifications, the following specific provisions should be made: Specification B Necessary special installation structure 1 Test level:
Relative degree
Test time
) Start test
d Condition test
e Inspection
Recovery conditions
) After inspection1. Test production level:
Relative degree
Test time
) Initial test
d Condition test
e Inspection
Resume condition
) Post-test1. Test production level:
Relative degree
Test time
) Initial test
d Condition testwwW.bzxz.Net
e Inspection
Resume condition
) Post-test
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