This part is the second part of GB/T 4798. This standard is modified to adopt IEC 60721-3-2:1997, which is a revision of GB/T 4798.7-1996. This standard specifies the environmental parameter groups and their severity levels to which electric and electronic products are subjected during transportation, with the purpose of classifying the environmental parameter groups to which products are subjected during land, water and air transportation, including loading and unloading. This part replaces GB/T 4798.2-1996. Compared with the previous version, the main differences are as follows: --- Added grades 2K6 and 2K7 in Table 1; --- Added Table 6 environmental grade groups; --- Added some descriptive content in Appendix A; --- Added Appendix B; --- Added Appendix C. GB/T 4798.2-2008 Environmental conditions for application of electric and electronic products Part 2: Transportation GB/T4798.2-2008 standard download decompression password: www.bzxz.net
This part is the second part of GB/T4798 This standard adopts IEC 60721-3-2:1997, which is a revision of GB/T 4798.7-1996. This standard specifies the environmental parameter groups and their severity levels that electric and electronic products are subjected to during transportation, with the purpose of classifying the environmental parameter groups that products are subjected to during land, water and air transportation, including loading and unloading. This part replaces GB/T 4798.2-1996. Compared with the previous version, the main differences are as follows: ———Added levels 2K6 and 2K7 in Table 1; ———Added Table 6 Environmental level groups; ———Added some descriptive content in Appendix A; ———Added Appendix B; ———Added Appendix C.
GB/T4798 "Environmental conditions for the application of electric and electronic products" standard includes:
GB/T4798.1-2005 Environmental conditions for the application of electric and electronic products Part 1: Storage
GB/T4798.2-2008 Environmental conditions for the application of electric and electronic products Part 2: Transportation
GB/T4798.3-2007 Environmental conditions for the application of electric and electronic products Part 3: Fixed use in weather-protected places
GB/T4798.4-2007 Environmental conditions for the application of electric and electronic products Part 4: Fixed use in places without weather protection
GB/T4798.5-2007 Environmental conditions for the application of electric and electronic products Part 5: Use on ground vehicles
GB/T4798.6-1996 Environmental conditions for the application of electric and electronic products for marine use
GB/T4798.7-2007 Environmental conditions for application of electric and electronic products Part 7: Portable and non-stationary use
GB/T4798.9-1997 Environmental conditions for application of electric and electronic products Microclimate inside the product
GB/T4798.10-2006 Environmental conditions for application of electric and electronic products Introduction
This part is Part 2 of GB/T4798. It is modified and adopted the international standard IEC60721-3-2:1997 "Environmental conditions classification Part 3: Environmental parameters and their severity classification Section 2: Transport" (English version).
Taking into account the national conditions of China, this part has made some modifications when adopting IEC60721-3-2:1997. The relevant technical differences and editorial differences have been incorporated into the text and marked with vertical lines in the margins of the clauses they involve.
The main differences between this part and IEC60721-3-2:1997 are as follows:
--- 2K4L is added in the Grade column of Table 1;
--- c) High temperature condition 40℃ is changed to 45℃ for grades 2K2, 2K3, 2K4, 2K5L and 2K6 in Table 1;
--- a), d) and g) Low temperature condition -40℃ is changed to -50℃ for grade 2K4 in Table 1;
--- Temperature variation high temperature condition 40℃ is changed to 45℃ for grades 2K3, 2K4, 2K5L and 2K6 in Table 1;
--- Grade 2M4 is added in the Grade column of Table 5, and the frequency range 2Hz~10Hz is added in the Steady-state Random Vibration column.
This part replaces GB/T 4798.2-1996. Compared with the previous version, the main differences are as follows:
--- Added grades 2K6 and 2K7 in Table 1;
--- Added environmental grade groups in Table 6;
--- Added some descriptive content in Appendix A;
--- Added Appendix B;
--- Added Appendix C.
Appendices A, B and C of this part are all informative appendices.
This part is proposed and managed by the National Standardization Committee for Environmental Conditions and Environmental Testing of Electrical and Electronic Products (SAC/TC8).
The drafting unit of this part: Guangzhou Electric Science Research Institute.
The main drafter of this part: Yan Jinglian.
The previous versions of the standards replaced by this part are:
---GB/T4798.2-1984;
---GB/T4798.2-1996.
The clauses in the following documents become the clauses of this part through reference in this part of GB/T4798. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, the parties to the agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions are applicable to this part.
GB/T4796-2008 Classification of environmental conditions for electric and electronic products Part 1: Environmental parameters and their severity (idtIEC60721-1:2002)
GB/T4797.1-2005 Temperature and humidity of natural environmental conditions for electric and electronic products (IEC60721-2-1:2002, MOD)
GB/T4798.10-2006 Introduction to application environmental conditions for electric and electronic products (IEC60721-3-0:2002, IDT)
Foreword I
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 Overview 2
5 Environmental parameter groups and their severity classification 2
6 Environmental condition level combination 2
Appendix A (Informative) Selection of environmental parameters and severity levels 8
Appendix B (Informative) Overview of the conditions included in each level combination 20
Appendix C (Informative) Description of environmental conditions for 2K6 and 2K7 levels 21

ICS19.040
National Standard of the People's Republic of China
GB/T4798.2—2008
Replaces GB/T4798.2—1996
Environmental conditions existing in the application of electric and electronic products—Part 2:Transportation(IEC60721-3-2.1997,Classificationofenvironmentalconditions-Part 3:Classification of groups of environmental parameters and their severitiesSection 2: Transportation, MOD)2008-03-24 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of China
2008-10-01 Implementation
GB/T4798.2-—2008
Normative references
3 Terms and definitions
Overview…
5 Environmental parameter groups and their severity classification
6 Environmental condition level combinations
Appendix A (Informative Appendix)||tt| |Selection of environmental parameters and severity levels
Appendix B (Informative Appendix) Overview of conditions included in each level combination
Appendix C (Informative Appendix)
Description of environmental conditions for levels 2K6 and 2K7
GB/T4798 "Environmental Conditions for Application of Electrical and Electronic Products" standard includes: GB/T4798.1—2005
GB/T4798.2—2008
GB/T4798.3—2007
GB/T4798.4—2007
GB/T4798.5—2007
GB/T4798.6—2008
GB/T4798.7—2008
GB/T4798.8—2008
GB/T4798.9—2001
GB/T4798.10—2001
GB/T4798.11—2001 98.6—1996
GB/T4798.7—2007
GB/T4798.91997
GB/T4798.102006
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
Environmental conditions for application of electrical and electronic products
No. 1 Part: Storage
Part 2: Transport
GB/T4798.2-—2008
Part 3: Stationary use in weather-protected locations Part 4: Stationary use in non-weather-protected locations Part 5: Use in ground vehicles
Part 7: Portable and non-stationary use
Microclimate inside the product
Environmental conditions for application of electrical and electronic products Introduction This part is Part 2 of GB/T4798, and is modified to adopt the international standard IEC60721-3-2:1997 "Classification of environmental conditions Part 3: Classification of environmental parameters and their severity Section 2: Transport" (English version). Taking into account my country's national conditions, this part has made some modifications when adopting IEC60721-3-2:1997. The relevant technical differences and editorial differences have been compiled into the text and marked with vertical lines in the margins of the clauses they involve. The main differences between this part and IEC60721-3-2:1997 are as follows: 2K4L is added to the grade column in Table 1;
in Table 1, the high temperature condition of 40℃ for 2K2, 2K3, 2K4.2K5L and 2K6 grades c) is changed to 45℃; in Table 1, the low temperature condition of -40℃ for 2K4 grade a), d) and g) is changed to -50℃; in Table 1, the temperature change high temperature condition of 40℃ for 2K3, 2K4, 2K5L and 2K6 grades e) is changed to 45℃; grade 2M4 is added to the grade column in Table 5, and the frequency range of 2Hz~10Hz is added to the steady-state random vibration column. This part replaces GB/T4798.2-1996. Compared with the previous version, the main differences are: Grades 2K6 and 2K7 are added to Table 1;www.bzxz.net
Environmental grade groups are added to Table 6;
Appendix A adds some descriptive content;
Appendix B is added;
Appendix C is added.
Appendix A, Appendix B and Appendix C of this part are all informative appendices. This part is proposed and managed by the National Standardization Committee for Environmental Conditions and Environmental Testing of Electrical and Electronic Products (SAC/TC8). Drafting unit of this part: Guangzhou Electric Science Research Institute. Main drafter of this part: Yan Jinglian.
The previous versions of the standards replaced by this part are: GB/T4798.2-1984
GB/T4798.2-1996.
1 Scope
Environmental conditions for application of electrical and electronic products
Part 2: Transport
GB/T4798.2—2008
GB/T4798 This part classifies the environmental parameter groups and their severity to which the product is subjected during transportation from one place to another.
This part considers the most commonly used modes of transportation, mainly including the following: Road transportation: cars, trucks, animals, conveyors; Rail transportation: trains, trams, conveyors; Water transportation, inland and ocean transportation: ships, hovercraft, conveyors; Air transportation: airplanes, conveyors
Vertical transportation: cranes, transport elevators, cable cars. This part specifies the environmental conditions that the product may encounter during transportation. If the product is packaged, the environmental conditions apply to the packaged product. This part only includes relatively severe environmental conditions that are unfavorable to the product. The environmental conditions of the product during storage and use are given in other parts of GB/T4798. The purpose of this part is to classify the groups of environmental parameters that products may be subjected to during land, water and air transport, including loading and unloading. This part gives a limited number of environmental condition levels, but covers a wide range. The user should choose the lowest level that includes the environmental conditions to be transported. Guidance is given in Appendix A. 2 Normative references
The clauses in the following documents become clauses of this part through reference to this part of GB/T 4798. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this part. However, parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version applies to this part.
GB/T47962008
(idtIEC60721-1:2002)
Classification of environmental conditions for electric and electronic products
Part 1: Environmental parameters and their severity GB/T4797.1—2005 Temperature and humidity of natural environmental conditions for electric and electronic products (IEC60721-2-1:2002, MOD) GB/T4798.10—2006 Introduction to application environmental conditions for electric and electronic products (IEC60721-3-0:2002, IDT) 3 Terms and definitions
In addition to the terms defined in Chapter 3 of GB/T4796-2001, the following terms and definitions apply to this part of GB/T4798. 3.1
Weatherprotected
The packaged or unpackaged product is in an enclosure that provides some environmental protection, ranging from a temperature-controlled container to a waterproof cover over the product. Ventilation conditions range from controlled airflow to natural air flow that occurs when the waterproof cover is raised. 3.2
Non-weatherprotected
No environmental protection measures are taken for the packaged or unpackaged product. 1
GB/T4798.2—2008
4Overview
To avoid misuse of the levels specified in GB/T4798, it is recommended to refer to GB/T4798.10—2006. The specified values ​​of the severity level are all maximum values ​​or limit values, which are unlikely to be exceeded, but may be reached for a short time. The frequency of occurrence may be different in different time periods under different circumstances. This section does not include the frequency of occurrence, but it should be considered for each environmental parameter. If possible, it should be specified separately. The information on duration and frequency of occurrence is given in Chapter 6 of GB/T4798.10—2006. It should be noted that the combination of several environmental parameters will increase the impact on the product. In particular, when high relative humidity and biological environmental conditions, chemically active substances, and mechanically active substances work together, the impact on the product is greater. 5 Environmental parameter groups and their severity classification
Climatic environmental conditions (K), special atmospheres
(S), and mechanical conditions (M) are classified according to Table 1
2C2/2S2/2M3, see Chapter 5
Climatic environmental conditions (Z), biological environmental conditions (B), chemically active substances (C), and mechanically active substances. For a given product, a set of grade descriptions should be used, such as 2K2/2B1/tropical area classification
K6 and 2K7 are described in Appendix C. The lowest grade combination
and the highest grade combination
2K5
2B1/2C//2S1/2M1 represent the environmental conditions to which the product is subjected under the most stringent transport conditions, while/|2C3/2S3/2M4 include a wide range of transport conditions, including very severe environmental conditions. The high-level environmental conditions generally include all the conditions of the lower grades. For some environments
, the number of conditions included in each grade
is currently difficult to quantify its severity. The environmental conditions are given in A3 in A. In Appendix
6 Environmental Condition Grade Groups
, as described in Chapter 5, when used, the classification allows for a variety of environmental condition combinations that the product may be subjected to. Therefore, there are many possible level combinations and flexibility. However, in practice, this flexibility is not always beneficial. For example, when different organizations formulate environmental conditions for a certain place, small but relatively disturbing differences may occur. In order to limit the possibility of general situations, standard level combinations can be selected from Table 6. In this part, if IE22 is selected, for a specified place or product, it can be referred to when there is no corresponding environmental condition in this part. Only in Chapter 5 can the level of casting be described. Alternatively, if the severity of some environmental parameters deviates from the level combination, the text "but . (parameter) . (severity and unit)" can be added, for example: IE22 seconds 10g/m. Appendix B summarizes the environmental conditions included in each environmental condition level combination.
Environmental parameters
a) Low temperature
b) High temperature
In an unventilated sealed body"
e) High temperature
Ventilated place or outdoors"
d) Temperature change
Air/air
e) Temperature change
Air/water
Relative humidity, without sudden temperature change
g) Relative humidity, accompanied by sudden temperature change, air/air at high relative humidity
.
h) absolute humidity, accompanied by rapid changes in temperature, air with high water vapor content/air with low pressure
-25/+25
climate environmental conditions level
25/+30
+45/+5
25/+30
+70/+15
50/+30
+ 45/+5
50/+30
+70/+15
—50/+30
+40/+5
50/+30
+70/+15
65/+30
+55/+5
65/+30||tt| |+85/+15
—25/+30
+55 /+5
25/+30
+-85/+15
65/+30
+45/+5
65/+30
+70/+15
+5/+30
+45/+5
+5/+30
+70 /+15
20/+30
+55/+5
20/+30
+85/+15
GB/T4798.2—2008
Environmental parameters
) Air pressure change
k) Movement of surrounding media, air
D Precipitation, south
m) Solar radiation
n) Thermal radiation
o) Water other than precipitation
p) Humidity
kPa /min
mm/min
Table 1 (continued)
STANDARDS
20PRESS
, high temperatures on the product surface may be affected by the ambient air temperature and by solar radiation entering through windows or other openings. b. high temperatures on the product surface may be affected by the ambient air temperature and by solar radiation entering through windows or other openings. b. high temperatures on the product surface may be affected by the ambient air temperature and by solar radiation (defined as m). "It is assumed that the product is directly transferred between the two specified temperatures. d. It is assumed that the product is only subjected to a sharp drop in temperature without a sharp rise in temperature). The water content in the air applies to temperatures down to the specified point. e. The value refers to the velocity of water, not to the accumulated altitude. f. Classes 2K6 (sub-dry heat) and 2K7 (dry heat) For more information, see Appendix 8. Class 2K4L applies to transport conditions at an altitude of 3000m to 1000m above sea level (excluding the Sierra Leone area). Class
Period surface conditions
Low humidity at school Under this condition, the reduction degree is preferably set to approximately 100%. 2K6
GB/T4798.2—2008
Environmental parameters
a) Flora
b) Fauna
Environmental parameters
a) Sea salt
b) Sulfur dioxide
e) Hydrogen sulfide
d) Nitrogen oxides (expressed as the equivalent value of nitrogen dioxide)
e) Oxygen
Hydrogen chloride
g) Hydrogen fluoride
h) Ammonia
cml/m3
Biological environmental condition level
Presence of mold, fungus, etc.
Presence of rodents and other animals that endanger products, except termites
Table 3 Chemical active substance condition level
Note 1: The values ​​given in the table are the maximum values ​​within a period of more than 30 minutes per day. Note 2: The values ​​in brackets are the expected values ​​of long-term average values. 2C2
Salt spray conditions
GB/T4798.2-—2008
Including termites
Salt water conditions
Note 3: The values ​​in cm/m are obtained by converting the values ​​in mg/m at a temperature of 20°C and a pressure of 101.3 kPa. Note 4: The values ​​used in the table are rounded. Table 4 Condition level of mechanically active substances
Environmental parameters
a) Dust in the air
b) Deposited dust
mg/(m2·h)
Environmental parameters
8) Steady-state sinusoidal vibration
Displacement amplitude
Acceleration amplitude
Frequency range
b) Steady-state random vibration
Acceleration spectrum density
Particle rate range
c) Non-steady-state vibration, including shock
Type 1 shock response spectrum peak acceleration
Type 2 shock response spectrum peak acceleration
d) Free skin fall:
Mass less than 20kg
Mass within Between 20kg and 100kg
Mass greater than 100kg
e) Example:
Mass less than 20kg
Mass between 20kg and 100kg
Mass greater than 100kg
D Data exchange and deflection
g) Steady acceleration
h) Static load
Mechanical environmental condition level
200~500
200~500
10~200200~2000
When transported by a vehicle with high damping, the frequency range can be limited to 200Hz, b see Figure 1.
e35 only appears for a short time, but exceeds 22.5* can often be achieved. 10
10~200200~2000
Any side tilt
200~500
10~200200~2000
Any side waiting
Any side lock
200~500
10~200200~2000
4According to the actual measurement of my country's roads, the severity level 2M4 is increased. Among them, the steady-state random vibration parameter response is public The transportation conditions of various vehicles and trailers in areas with very poor road systems. Other parameters are the same as those of the 2M3 level. Since the power spectrum density of random dynamic acceleration of automobile and railway freight transportation in my country has a large value within 2Hz10H, this frequency range is increased. GB/T4798.2—2008
Biological environment
Chemically active substances
Mechanically active substances
Mechanical conditions
aFootnote a of Table 5 applies.
Example of half-sine pulse duration:
Spectrum I: duration 11ms;
Spectrum II: duration 6ms.
Table 6 Environmental parameter combination level grouping
Environmental parameter combination level grouping
Typical shock response spectrum (first order maximum shock response spectrum) GB/T4798.2—2008
Frequency/Hz
GB/T4798.2—2008
A.1 Overview
Appendix A
(Informative Appendix)
Selection of environmental parameters and severity levels
This appendix explains the basis of classification, studies the influence of various factors on the selection of environmental parameters and their severity levels, summarizes the environmental conditions covered by each level, and gives application examples. A.2 Environmental condition study
For each environmental parameter, various possible conditions that may lead to different environmental condition levels are listed, and various conditions are arranged as much as possible to form more severity levels.
The first column of A.2.1 to A.2.5 describes various conditions. In each level column, "×" indicates that the level includes the condition. The lowest level that includes a condition can be found from the first "×" in the row where the condition is located. The above process of finding the appropriate level applies to all the following clauses, but it should be noted that climate types are also included in A.2.1. The lowest level that includes a condition can be found by first following the relevant climate type column down to the first "×" in the relevant condition row, and then reading horizontally to the right to the first "×" described in the above method. The climate types specified in GB/T4797.1-2005 are as follows: Extreme Cold (except central Antarctica), Cold, Cold Temperature, Warm Temperature, Dry Heat, Moderate Dry Heat, Extreme Dry Heat, Humid Heat, (Constant) Humid Heat. It should be noted that when this annex mentions that a condition is included in a level, it does not mean that the level describes the minimum severity required to include the condition for each environmental parameter. Note: Contingencies are not included. However, the possibility of contingencies may need to be considered in some levels. For example, when the product packaging is damaged by liquid leaking from an adjacent container during transportation on a ship.
Climate environmental conditions level K
Environmental parameters
a) Low temperature
With thermal protection (to prevent freezing)
Without climate protection, or,
With climate protection but without heating measures,
Or transportation in a heated cabin
Transportation in a non-heated cabin
b) High temperature
In an unventilated sealed body
In an unventilated sealed body
e) High temperature
Ventilated place or outdoors
Temperature-controlled protection place
Ventilated air-protected place, minus
No climate protection place
d) Temperature change
Air/air
The product is not transferred between indoors and outdoors
The product is transferred between indoors and outdoors, Or
Transfer from unheated cabin to outdoor
) Temperature change
Air/water?
Preventive measures are taken, or the unit is not affected by other water sources
Directly impacted by rain or water flow after solar radiation Extremely cold
Air family type
Impact level Extremely hand
Warm to hot
25/+25
2 5/+30
+45/+5
50/+30
+45/+5
50/+30
+40/+5
65/+30
+55/+5
25/+30
+55/+5
-65 /+30
+45/+5The climate types specified in 1-2005 are as follows: Extremely cold (except central Antarctica), cold, cold and warm, warm and warm, dry and hot, moderately dry and hot, extremely dry and hot, humid and hot, (constant) humid and hot. It should be noted that when a condition is mentioned in this appendix as being included in a certain level, it does not mean that the level describes the minimum severity required to include the condition for each environmental parameter. Note: Accidental events are not included. However, the possibility of accidental events may need to be considered in some levels. For example, the packaging of the product is damaged by the leaking liquid from the adjacent container during transportation on board.
Climate environmental conditions level K
Environmental parameters
a) Low temperature
With thermal protection (to prevent freezing)
Without climate protection, or,
With climate protection but without heating measures,
Or transportation in a heated cabin
Transportation in a non-heated cabin
b) High temperature
In an unventilated sealed body
In an unventilated sealed body
e) High temperature
Ventilated place or outdoors
Temperature-controlled protection place
Ventilated air-protected place, minus
No climate protection place
d) Temperature change
Air/air
The product is not transferred between indoors and outdoors
The product is transferred between indoors and outdoors, Or
Transfer from unheated cabin to outdoor
) Temperature change
Air/water?
Preventive measures are taken, or the unit is not affected by other water sources
Directly impacted by rain or water flow after solar radiation Extremely cold
Air family type
Impact level Extremely hand
Warm to hot
25/+25
2 5/+30
+45/+5
50/+30
+45/+5
50/+30
+40/+5
65/+30
+55/+5
25/+30
+55/+5
-65 /+30
+45/+5The climate types specified in 1-2005 are as follows: Extremely cold (except central Antarctica), cold, cold and warm, warm and warm, dry and hot, moderately dry and hot, extremely dry and hot, humid and hot, (constant) humid and hot. It should be noted that when a condition is mentioned in this appendix as being included in a certain level, it does not mean that the level describes the minimum severity required to include the condition for each environmental parameter. Note: Accidental events are not included. However, the possibility of accidental events may need to be considered in some levels. For example, the packaging of the product is damaged by the leaking liquid from the adjacent container during transportation on board.
Climate environmental conditions level K
Environmental parameters
a) Low temperature
With thermal protection (to prevent freezing)
Without climate protection, or,
With climate protection but without heating measures,
Or transportation in a heated cabin
Transportation in a non-heated cabin
b) High temperature
In an unventilated sealed body
In an unventilated sealed body
e) High temperature
Ventilated place or outdoors
Temperature-controlled protection place
Ventilated air-protected place, minus
No climate protection place
d) Temperature change
Air/air
The product is not transferred between indoors and outdoors
The product is transferred between indoors and outdoors, Or
Transfer from unheated cabin to outdoor
) Temperature change
Air/water?
Preventive measures are taken, or the unit is not affected by other water sources
Directly impacted by rain or water flow after solar radiation Extremely cold
Air family type
Impact level Extremely hand
Warm to hot
25/+25
2 5/+30
+45/+5
50/+30
+45/+5
50/+30
+40/+5
65/+30
+55/+5
25/+30
+55/+5
-65 /+30
+45/+5
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.