This standard applies to electrical and electronic products that are carried and used in non-stationary environments. The environmental conditions include the following three situations: a. Environmental conditions that may occur when the product is placed and used for a short period of time. B. Changes in environmental conditions caused by changes in location. C. Environmental conditions for products moving between different locations. This standard includes environmental conditions in locations with and without weather protection on the ground and during movement between locations. The environmental conditions specified in this standard do not include the microclimate conditions inside the product, nor do they include environmental conditions caused by fire, explosion, nuclear radiation, or accidents. This standard specifies the environmental parameters and severity levels of products that are carried and used in non-stationary environments, and is the basis for selection in formulating product standards. GB/T 4798.7-1987 Environmental conditions for the application of electrical and electronic products that are carried and used in non-stationary environments. GB/T4798.7-1987 Standard download decompression password: www.bzxz.net

1 Introduction
National Standard of the People's Republic of China
Environmental conditions existing in theapplication of electric and electonic productsPortable and non-stationary use
Environmental conditions existing in theapplication of electric and electonic productsPortable and non-stationary use 1.1 Scope of application
UDC 621.3 : 620. 19
GB 4798.7—87
1.1.1 This standard applies to electric and electonic products for portable and non-stationary use, and its environmental conditions include the following three situations: a. Environmental conditions that may occur when the product is placed and used for a short period of time. b. Environmental conditions that may occur when the product is placed and used for a short period of time. "Changes in environmental conditions due to changes in location. c. Environmental conditions for products moving between different locations 1.1.2 This standard covers environmental conditions in ground locations with and without weather protection and during movement between locations. 1.1.3 The environmental conditions specified in this standard do not include microclimate conditions inside the product, nor do they include environmental conditions caused by fire, explosion, nuclear radiation, or accidents.
1.2 Purpose
This standard specifies the environmental parameters and severity levels of products for portable and non-stationary use, and is the basis for selecting product standards. 1.3 Application
1.3.1 This standard is used together with GB4798.10-84 "Introduction to Environmental Conditions for Application of Electrical and Electronic Products". 1.3.2 This standard applies to Limited levels are specified for places where it is widely used. When using this standard, the lowest level that meets the use requirements should be selected. The selection principles are shown in Appendix A.
1.3.3 The environmental conditions of non-working products in motion are different from the environmental conditions of the products during operation. If considered separately, the environmental conditions for use can be selected at a lower level or according to the actual use conditions of the product, in accordance with the relevant provisions of GB4798. 1.3.4 The environmental parameters of this standard use maximum or limit values, and the possibility of exceeding the specified values ​​is very small. In actual use, it is possible to reach the values ​​specified in this standard, but it will not occur frequently in most places. Due to different environmental conditions in different places, the frequency of occurrence is also different. The frequency of occurrence must be considered for any environmental parameter. If it is necessary to determine the environment For the duration and frequency of environmental parameters, please refer to Appendix D. 2 Terminology
2.1 The definitions in GB4796-84 "Classification of parameters of electrical and electronic products and their severity classification" apply to this standard. 2.2 Portable and non-fixed use
The product is not permanently installed on a certain component or permanently placed in a fixed place for use, but is frequently moved from one place to another. During the movement, the product is not specially protected, and the movement time accounts for a considerable proportion of the product life. The product can work both in a fixed state and in a mobile state. Approved by the National Bureau of Standards on August 19, 1987
Implementation of 1988-050
3 Classification and levels of environmental parameters
3.1 Description of environmental parameter classification
GB4798.7—87
3.1.1 The environmental condition classification number specified in this standard is (7). 3.1.2 This standard specifies the classification and codes of various environmental parameters as follows: climatic environmental conditions (K);
special climatic environmental conditions (Z);
biological environmental conditions (B);
chemically active substance environmental conditions (C);
mechanically active substance environmental conditions (S),
mechanical environmental conditions (M).
3.1.3 Based on the environmental conditions caused by various factors such as outdoor climate, building structure, and production conditions during use, this standard specifies the combined environmental parameter levels that are in accordance with objective existence. The larger the number of the level, the higher the severity (except for special climatic conditions).
3.1.4 This standard can only give the biological condition severity value. 3.1.5 For a certain: determine the place of use or product, all levels should be indicated. For example: 7K2/7ZI/7Z5/7Z9/7B2/7C2/7S2/7M2.
3.1.6 Appendix B gives a chart of the relationship between air temperature, relative humidity and absolute humidity. Appendix C gives three examples of the practical application of this standard. Appendix D is the duration and frequency of occurrence. 3.2 Climate and environmental conditions
See Table 1 for the levels of climate and environmental conditions. 7K17K5 represents the levels of climate and environmental conditions for product carrying and non-fixed use. These climate and environmental conditions have been tested for a long time and take into account all factors that affect these conditions under normal circumstances. For example, outdoor climate conditions, building type, temperature and humidity control system, mobile means and internal conditions (heat diffusion of adjacent equipment, on-site personnel, etc.), but not including accidents.
When choosing a reasonable level, the following should be taken into account: The climate conditions inside the building depend on the outdoor air temperature, solar radiation and building type. Good insulation or high heat capacity walls can continuously buffer the peak of outdoor day and night temperature changes. Walls with poor insulation or low heat capacity do not have this effect; the peak value is increased by solar radiation during the day and by the radiation of the building itself at night, which is increased by heat absorption or greenhouse effect. The climatic conditions in non-weather-protected locations have a greater impact on the function of the product and its components than in weather-protected locations. In this regard, special consideration should be given to the effects of temperature changes, solar radiation, rainfall, air flow rate and wind cooling. The severity of these effects is also affected by the specific building structure (type and thickness of materials, surface color, sealing or ventilation properties of the shell, heating, etc.), as well as by operational details (such as the choice of working position and the main wind direction and degree of exposure to the climate, etc.).
3.3 Special climatic environmental conditions
The levels of special climatic environmental conditions are shown in Table 2.
3.4 ​​Biological environmental conditions
The levels of biological environmental conditions are shown in Table 3.
3.5 Environmental conditions for chemically active substances
3.5.1 The levels of environmental conditions for chemically active substances are shown in Table 4. 3.5.2 Chemically active substances are mainly chemical substances discharged from industrial production, motor vehicles and heating systems, as well as salt spray, which has a relatively large impact. These substances will affect the performance and materials of the product. Since the product is directly affected by high-concentration pollution in a short period of time, the material is usually damaged and cannot be restored, so this standard stipulates the maximum value; since the internal parts of the product are affected by the long-term effect of pollutants, the impact is relatively obvious, so this standard also stipulates the corresponding average value. 213
GB 4798.7-87
In fact, various chemical pollutants will not appear at the same time. Even if they appear at the same time, their concentrations will not increase uniformly at the same time. Usually, only one substance has a higher concentration. Therefore, when considering the impact of chemically active substances on the product, the chemical parameters and their levels must be reasonably selected according to the actual situation.
Note: The salt spray in this standard does not consider chemically active liquids and chemically active solids other than sea salt and land salt. 3.5.3 When 7C1 or 7C2 is selected, all parameters in the grade shall be met. When 7C3 or 7C4 is selected, only some parameters related to use can be selected according to actual conditions, but the remaining parameters must meet the requirements of 7C2. 3.6 Environmental conditions for mechanically active substances
The effects of sand and dust on products are similar, so this standard puts them in the same category. Their grades are shown in Table 5. 3.7 Mechanical environmental conditions
This standard specifies the severity of sinusoidal steady-state vibration in the high-frequency and low-frequency ranges by the magnitude of acceleration and displacement. 3.7.1
This standard uses the acceleration power spectrum density and frequency range to indicate the severity of random vibration. 3.7.2
This standard uses the maximum undamped impact response spectrum of the first level to indicate the severity of non-steady-state vibration including impact. 3.7.4
This standard indicates the severity of free fall according to the drop height determined by the mass of the product. 3.7.5
See Table 6 for mechanical environmental condition levels.
Table 1 Climate environment condition level
Environmental parameters
Low relative humidity①
High relative humidity
Low absolute humidity①
High absolute humidity
Temperature change range
Low air pressure
High air pressure
Air pressure change rate
Solar radiation
Thermal radiation
Ambient air movement
Condensation conditions
Precipitation conditions (rain, snow, frost, etc.)
Rainfall intensity
Rainwater temperature?
Water sources other than rainwater
Icing and frost conditions
kPa/min
mm/min
+5/+25
Negligible
Negligible
— 40
25/+30
Negligible
40/+30
Negligible
—65/+30
Note: () High and low relative humidity are limited by high and low absolute condensation. Therefore, for low temperature and low relative humidity or high temperature and high relative humidity, the severity given in Table 1 cannot be achieved at the same time. The relationship between air temperature and humidity is shown in Appendix B. ②70kPa--Generally represents an altitude of about 3000m, and may be higher in some geographical locations. ③Mine conditions are not included.
Here, the rainwater lake degree must be considered together with high temperature and solar radiation. The cooling effect of rainfall must be considered in relation to the surface temperature of the product. Select the actual conditions of the site from Table 2. 214
Heat radiation
Ambient air movement
Water other than shade water
Note: Underwater conditions are not considered.
Environmental parameters
Negligible
Negligible
GB 4798.7-87
Table 2 Special climatic environmental conditions levels
Negligible
Special conditions B
Heat radiation conditions, such as heating systems
Heat radiation conditions, such as heating systems, commercial furnaces or industrial boilers 5
Negligible
Table 3 Biological environmental conditions levels
Mold and fungi
Rodents and other harmful to the product
Animal conditions (excluding themselves)
Mold and fungi
Rodents and other harmful to the product
Animal conditions (including themselves)
Environmental parameters
|“Sulfur oxides
Hydrogen sulfide
Hydrogen nitride
Hydrogen fluoride
Nitrogen oxides?
GB4798.7-87
Table 4 Environmental condition levels for chemically active substances
Maximum value
Negligible①
Average value
Maximum value
Note: ①) Salt spray may appear in sheltered places and near-shore places in coastal areas. ②Expressed by corresponding nitrogen dioxide values
Average value
Maximum value
Average value
③The average value is the average value of long-term values, and the maximum value is the limit value or peak value within a period Value. The cycle does not exceed 30 minutes per day. The most human value
④) The cm/m given here is converted from the value of mg/m when the reference atmospheric condition temperature is 20℃ and the air pressure is 101.3kPa. This table uses approximate values.
Table 5 Environmental condition level of mechanically active substances
Environmental parameters
Dust (suspended)
Dust (deposited)
Environmental parameters
Steady-state string vibration
Acceleration
Frequency range
Steady-state random vibration
Acceleration power spectrum density
Particle rate range
Including bursts in Non-
Steady-state vibration
Type 1 shock response spectrum
Peak acceleration a
Type 3 shock response spectrum
Peak acceleration
Free fall
Mass ≤ikg
Drop height
Mass ≤10kg
Drop height
Mass ≤50kg
Drop height
GB4798.7—87
Table 6 Mechanical environment condition level
9～200
10~~200
200～500
200～2 000
9～200
10-~200
200500
200~2000
2.88～200
10～200
200-500
200～2000
Note: The vibration amplitude and frequency range in Table 6 are related to the structure of the site, and are generally not closely related to non-fixed products. However, if the test specification allows the use of these data, the performance and use of the specific product must be considered. .8
State big sound world pregnant shrimp
Figure 1 Typical shock response spectrum (first type of maximum shock response spectrum) 1000
Response spectrum: l-Response spectrum: Duration = 11ms Duration - 6ms2000Hz
GB 4798.7-87
Appendix A
Instructions for selecting environmental parameters and their severity classification (reference)
A.1 This appendix classifies the places where the product is used, and explains how to correctly select environmental parameters and their classification for different climate types and different places of use.
A.2 The climate types and parameter levels in this appendix are in accordance with GB4797.1-84 "Natural Environmental Conditions for Electrical and Electronic Products: Temperature and Humidity"
. The classification and code of climate types are shown in Table A1. A.3 Various combinations of environmental parameters will aggravate the impact on the product, especially when high relative humidity and biological, chemical, and mechanical active substances are added.
China
Cold and temperature 1
Cold and temperature Ⅱ
Sub-humid heat
Moderate dry heat
Extremely dry heat
Steady humid heat
Classification and codes of climate types
World type
(extremedy cold)
(cold)
(cold temperate)
(warm temperate)
(watin dry)
(mild warm dry)
(extremely warm dry)
(warm damp)
(warm sdamp equable)
World type code
Places for use
Low temperature ℃
Places with temperature control and climate protection. Heating or cooling devices are periodically disconnected, but extremely low temperatures are avoided
Climate-protected places without overflow control. Heating equipment can be used when necessary to avoid extremely low temperatures
direct exposure to open air climate places.
Various types of building locations.
Storage boxes in motion on the ground.
Heated wheels in aircraft
High temperatures ℃
Climate-protected places with temperature control. Heating or cooling devices are periodically shut down, but extremely high temperatures are avoided
No temperature-controlled climate-protected places. When necessary, the construction of buildings avoids extremely high temperatures
No temperature-controlled climate-protected places, and the buildings can avoid changes in the outdoor daily climate
Various types of building locations.
Ventilated mobile places
Direct exposure to the outdoor climate places.
Enclosed non-ventilated mobile place
Low relative humidity%
Any place
High relative humidity
GB 4798.7--87
China
Climate and environmental conditions (K)
Climate type
Boundary type
Extreme cold and warm
Wet and hot and cold and warm
Hot and hot and warm
7K27K37K4
Place of use
Constant temperature and climate-protected place. Dehydration when necessary to avoid extreme humidity
Temperature-controlled climate-protected place. Heating or cooling devices are periodically disconnected. No temperature-controlled climate-protected place The construction of buildings can protect against outdoor daytime climate changes. Enclosed ventilated mobile places for a limited time (no overnight)
Various buildings and places directly exposed to open air climate, and various mobile places
Low absolute humidity g/m
Temperature-controlled climate-protected place, heating or cooling devices are periodically disconnected. Humidification treatment is necessary to avoid extremely dry conditions
Direct exposure to weather conditions of various types
Buildings and various mobile places
High absolute humidity 8/m
Temperature-controlled and climate-protected places. No temperature-controlled and climate-protected places. Buildings can protect against outdoor daily climate changes.
Closed ventilated mobile places for a limited time (no overnight) Various building places and closed ventilated mobile places
Places directly exposed to open-air weather
Closed non-ventilated mobile places
Rapid temperature changes in the range of ℃
Temperature-controlled and climate-protected places. Heating or cooling devices are periodically disconnected, but extreme temperatures are avoided. Direct movement between these places
No temperature-controlled and climate-protected places.
Use heating systems or buildings when necessary to avoid extreme temperatures. Direct movement between these places
GB 4798. 7 -- 87
Continued Table A2.1
Climate type
Cold cold warm
Dry subhumid
World type
Extremely cold cold warm
Extremely humid constant
Hot hot hot hot
Warm hot hot cold warm warm
××/×X
×|×
××××××
x]x[x[xix[x[
XIXXXIXXIX
××
×××
×××
|x×××
×××
×|××|×|×|×|×
x/xixixl
×××××××/×
×x/xx
×-×-×-x
Xx×x×xxX
I×××X
×-××
×-x
7K27K37K417K5
0.50.10.003
+30+30
Place of use
Places directly exposed to open air weather.
Ventilated places in land movement or aircraft heated cabins.
Various buildings. Direct movement between these places
Various unventilated places including unheated aircraft cabins during movement. Direct movement between these places
Low air pressure kPa
Any place below 3000m
except the unpressurized cabin of an aircraft
Any place below 5000m
except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
High air pressure kPa
Places connected to the atmosphere and the rate of change of air pressure in the pressurized cabin of an aircraft
kPa/min
Any place except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
GB 4798.7-87
Continued Table A2.1
Climate Type
China
Cold Warm Lower
World Type
Warm Thousand Pole
Subhumid Pole Cold Cold
Cold Warm Hot
Hot Cold Warm Hot Hot
×xx×
IxI×x
Xxx|xx
XXXXXXXX
(X|xX|x
×××
××××
XXXXIXI|| tt||/X×××
×××××××
7K27K3
7K17K5
Place of use
Solar radiation W/m
Fully weather-protected place
Directly exposed to the weather.
Partially weather-protected place
Heat radiation
Any place
Circumferential air movement m/s
Any place
Condensation conditions
Any place
Deposition (rain, snow, shark, etc.)||t t||Places with climate protection
Places without climate protection
Rainfall intensity mm/min
Places with climate protection
Places without climate protection
Lishui temperature ℃
Places with climate protection
Places without climate protection
GB4798.7-87
Continued Table A2.1
Climate type
Cold village warm
Subhumid extremely cold cold warm Central Science
Extremely humid constant
Warm warm hot
Hot hot hot cold
Cold temperature
XIxXIXXX
17K17K27K3
Hot temperature
X/xIX/X
11201120
Table 2／
「Table 2
Place of use
Water other than water
Any place
S) Freezing and frost
Climate-protected place with temperature control. Heating or cooling device is disconnected periodically. But prevent low overflow
Any place
Place of use
GB 4798.7 --87
Continued Table A2.1
China
ColdColdWarm
World Type
Subhumid Extremely Cold
ColdWarm丨
HotHotHotHot
ColdWarmWarmHotHotCold
WarmWarm
Biological Environmental Conditions
For Places Where Mold Growth Can Be Negligible or Where Growth of Fungi Can Be PreventedFor Places Where Fungi Can GrowⅡFor Places Where Growth of Fungi Cannot Be PreventedAnimal
For Places Affected by Rodents and All Other Animals (Including Termites) Places where damage can be ignored
Places where damage is caused by rodents and all other animals (excluding termites)
Places where damage is caused by rodents and all other animals (including termites)
Negligible
7K37K47K5
Table 2Table 2
Conditions of rodents and other animals harmful to products
(excluding termites)
Conditions of animals harmful to products
(including termites)1
Climate type
Cold cold warm
Dry subhumid
World type
Extremely cold cold warm
Extremely humid constant
Hot hot hot hot
Warm hot hot cold warm warm
××/×X
×|×
××××××
x]x[x[xix[x[
XIXXXIXXIX
××
×××
x×××|| tt||×××
×|××|×|×|×|×
x/xixixl
×××××××/×
×××××××
[x[x| x
×-×-×-x
Xx×x×xxX
I×××X
×-××
×-x
7K27K37K417K5
0.50.10.003
+30+30
Place of use
Places directly exposed to open air weather.
Ventilated places in land movement or aircraft heated cabins.
Various buildings. Direct movement between these places
Various unventilated places including unheated aircraft cabins during movement. Direct movement between these places
Low air pressure kPa
Any place below 3000m
except the unpressurized cabin of an aircraft
Any place below 5000m
except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
High air pressure kPa
Places connected to the atmosphere and the rate of change of air pressure in the pressurized cabin of an aircraft
kPa/min
Any place except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
GB 4798.7-87
Continued Table A2.1
Climate Type
China
Cold Warm Lower
World Type
Warm Thousand Pole
Subhumid Pole Cold Cold
Cold Warm Hot
Hot Cold Warm Hot Hot
×xx×
IxI×x
Xxx|xx
XXXXXXXX
(X|xX|x
×××
××××
XXXXIXI|| tt||/X×××
×××××××
7K27K3
7K17K5
Place of use
Solar radiation W/m
Fully weather-protected place
Directly exposed to the weather.
Partially weather-protected place
Heat radiation
Any place
Circumferential air movement m/s
Any place
Condensation conditions
Any place
Deposition (rain, snow, shark, etc.)||t t||Places with climate protection
Places without climate protection
Rainfall intensity mm/min
Places with climate protection
Places without climate protection
Lishui temperature ℃
Places with climate protection
Places without climate protection
GB4798.7-87
Continued Table A2.1
Climate type
Cold village warm
Subhumid extremely cold cold warm Central Science
Extremely humid constant
Warm warm hot
Hot hot hot cold
Cold temperature
XIxXIXXX
17K17K27K3
Hot temperature
X/xIX/X
11201120
Table 2／
「Table 2
Place of use
Water other than water
Any place
S) Freezing and frost
Climate-protected place with temperature control. Heating or cooling device is disconnected periodically. But prevent low overflow
Any place
Place of use
GB 4798.7 --87
Continued Table A2.1
China
ColdColdWarm
World Type
Subhumid Extremely Cold
ColdWarm丨
HotHotHotHot
ColdWarmWarmHotHotCold
WarmWarm
Biological Environmental Conditions
For Places Where Mold Growth Can Be Negligible or Where Growth of Fungi Can Be PreventedFor Places Where Fungi Can GrowⅡFor Places Where Growth of Fungi Cannot Be PreventedAnimal
For Places Affected by Rodents and All Other Animals (Including Termites) Places where damage can be ignored
Places where damage is caused by rodents and all other animals (excluding termites)
Places where damage is caused by rodents and all other animals (including termites)
Negligible
7K37K47K5
Table 2Table 2
Conditions of rodents and other animals harmful to products
(excluding termites)
Conditions of animals harmful to products
(including termites)1
Climate type
Cold cold warm
Dry subhumid
World type
Extremely cold cold warm
Extremely humid constant
Hot hot hot hot
Warm hot hot cold warm warm
××/×X
×|×
××××××
x]x[x[xix[x[
XIXXXIXXIX
××
×××
x×××|| tt||×××
×|××|×|×|×|×
x/xixixl
×××××××/×
×××××××
[x[x| x
×-×-×-x
Xx×x×xxX
I×××X
×-××
×-x
7K27K37K417K5
0.50.10.003
+30+30
Place of use
Places directly exposed to open air weather.
Ventilated places in land movement or aircraft heated cabins.
Various buildings. Direct movement between these places
Various unventilated places including unheated aircraft cabins during movement. Direct movement between these places
Low air pressure kPa
Any place below 3000m
except the unpressurized cabin of an aircraft
Any place below 5000m
except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
High air pressure kPa
Places connected to the atmosphere and the rate of change of air pressure in the pressurized cabin of an aircraft
kPa/minbzxz.net
Any place except the unpressurized cabin of an aircraft
Including any place in the unpressurized cabin of an aircraft
GB 4798.7-87
Continued Table A2.1
Climate Type
China
Cold Warm Lower
World Type
Warm Thousand Pole
Subhumid Pole Cold Cold
Cold Warm Hot
Hot Cold Warm Hot Hot
×xx×
IxI×x
Xxx|xx
XXXXXXXX
(X|xX|x
×××
××××
XXXXIXI|| tt||/X×××
×××××××
7K27K3
7K17K5
Place of use
Solar radiation W/m
Fully weather-protected place
Directly exposed to the weather.
Partially weather-protected place
Heat radiation
Any place
Circumferential air movement m/s
Any place
Condensation conditions
Any place
Deposition (rain, snow, shark, etc.)||t t||Places with climate protection
Places without climate protection
Rainfall intensity mm/min
Places with climate protection
Places without climate protection
Lishui temperature ℃
Places with climate protection
Places without climate protection
GB4798.7-87
Continued Table A2.1
Climate type
Cold village warm
Subhumid extremely cold cold warm Central Science
Extremely humid constant
Warm warm hot
Hot hot hot cold
Cold temperature
XIxXIXXX
17K17K27K3
Hot temperature
X/xIX/X
11201120
Table 2／
「Table 2
Place of use
Water other than water
Any place
S) Freezing and frost
Climate-protected place with temperature control. Heating or cooling device is disconnected periodically. But prevent low overflow
Any place
Place of use
GB 4798.7 --87
Continued Table A2.1
China
ColdColdWarm
World Type
Subhumid Extremely Cold
ColdWarm丨
HotHotHotHot
ColdWarmWarmHotHotCold
WarmWarm
Biological Environmental Conditions
For Places Where Mold Growth Can Be Negligible or Where Growth of Fungi Can Be PreventedFor Places Where Fungi Can GrowⅡFor Places Where Growth of Fungi Cannot Be PreventedAnimal
For Places Affected by Rodents and All Other Animals (Including Termites) Places where damage can be ignored
Places where damage is caused by rodents and all other animals (excluding termites)
Places where damage is caused by rodents and all other animals (including termites)
Negligible
7K37K47K5
Table 2Table 2
Conditions of rodents and other animals harmful to products
(excluding termites)
Conditions of animals harmful to products
(including termites)1
Climate type
China
Cold Warm Lower
World type
Warm Thousand Pole
Subhumid Pole Cold Cold
Cold Warm Hot
Hot Cold Warm Hot Hot
×xx×
IxI×x
Xxx|xx
XXXXXXXX
(X|xX|x
×××
××××
XXXXIXI
/X×××
×××××××
7K27K3
7K17K5
Place of use
Solar radiation W/m
Fully weather-protected place
Directly exposed to the weather.
Partially weather-protected place
Heat radiation
Any place
Circumferential air movement m/s
Any place
Condensation conditions
Any place
Deposition (rain, snow, shark, etc.)
Weather-protected place
Places without climate protection
Rainfall intensity mm/min
Places with climate protection
Places without climate protection
Lishui temperature ℃
Places with climate protection
Places without climate protection
GB4798.7-87
Continued Table A2.1
Climate type
Cold and warm
Subhumid Extremely cold and cold
Extremely humid and constant
Warm and hot
Hot and hot and cold
Cold and warm|| tt||XIxXIXXX
17K17K27K3
Hot hot hot
X/xIX/X
11201120
Table 2／
「Table 2
Place of use
Water other than water
Any place
S) Freezing and frost
Climate-protected place with temperature control. Heating or cooling device is disconnected periodically. But prevent low overflow
Any place
Place of use
GB 4798.7 --87
Continued Table A2.1
China
ColdColdWarm
World Type
Subhumid Extremely Cold
ColdWarm丨
HotHotHotHot
ColdWarmWarmHotHotCold
WarmWarm
Biological Environmental Conditions
For Places Where Mold Growth Can Be Negligible or Where Growth of Fungi Can Be PreventedFor Places Where Fungi Can GrowⅡFor Places Where Growth of Fungi Cannot Be PreventedAnimal
For Places Affected by Rodents and All Other Animals (Including Termites) Places where damage can be ignored
Places where damage is caused by rodents and all other animals (excluding termites)
Places where damage is caused by rodents and all other animals (including termites)
Negligible
7K37K47K5
Table 2Table 2
Conditions of rodents and other animals harmful to products
(excluding termites)
Conditions of animals harmful to products
(including termites)1
Climate type
China
Cold Warm Lower
World type
Warm Thousand Pole
Subhumid Pole Cold Cold
Cold Warm Hot
Hot Cold Warm Hot Hot
×xx×
IxI×x
Xxx|xx
XXXXXXXX
(X|xX|x
×××
××××
XXXXIXI
/X×××
×××××××
7K27K3
7K17K5
Place of use
Solar radiation W/m
Fully weather-protected place
Directly exposed to the weather.
Partially weather-protected place
Heat radiation
Any place
Circumferential air movement m/s
Any place
Condensation conditions
Any place
Deposition (rain, snow, shark, etc.)
Weather-protected place
Places without climate protection
Rainfall intensity mm/min
Places with climate protection
Places without climate protection
Lishui temperature ℃
Places with climate protection
Places without climate protection
GB4798.7-87
Continued Table A2.1
Climate type
Cold and warm
Subhumid Extremely cold and cold
Extremely humid and constant
Warm and hot
Hot and hot and cold
Cold and warm|| tt||XIxXIXXX
17K17K27K3
Hot hot hot
X/xIX/X
11201120
Table 2／
「Table 2
Place of use
Water other than water
Any place
S) Freezing and frost
Climate-protected place with temperature control. Heating or cooling device is disconnected periodically. But prevent low overflow
Any place
Place of use
GB 4798.7 --87
Continued Table A2.1
China
ColdColdWarm
World Type
Subhumid Extremely Cold
ColdWarm丨
HotHotHotHot
ColdWarmWarmHotHotCold
WarmWarm
Biological Environmental Conditions
For Places Where Mold Growth Can Be Negligible or Where Growth of Fungi Can Be PreventedFor Places Where Fungi Can GrowⅡFor Places Where Growth of Fungi Cannot Be PreventedAnimal
For Places Affected by Rodents and All Other Animals (Including Termites) Places where damage can be ignored
Places where damage is caused by rodents and all other animals (excluding termites)
Places where damage is caused by rodents and all other animals (including termites)
Negligible
7K37K47K5
Table 2Table 2
Conditions of rodents and other animals harmful to products
(excluding termites)
Conditions of animals harmful to products
(including termites)
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