Some standard content:
ICS 19.040
National Standard of the People's Republic of China
GB/T 19608.1—2004
Part 1: Dry heat
Classification of special environmental condition-Part 1: Dry heatPromulgated on December 13, 2004
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of China
Implementation on June 1, 2005
GB/T19608.1-2004
GB/T19608 Classification of special environmental conditions" is divided into the following parts:-Part 1: Low heat
Part 2: Dry heat desert
-Part 3: High temperature
Other parts are to be submitted,
This part is Appendix A to Part 1 of GB/T 19608: This part is an informative appendix. The China Electrical Equipment Industry Association proposed that this part be under the jurisdiction of the Beijing Electrical and Electronic Technology and Economic Research Institute of the Machinery Industry. This part was drafted by the Guangzhou Electric Science Research Institute, and the Beijing Electrical and Electronic Technology and Economic Research Institute participated in the drafting. The main chapter authors of this part are: Chen Ling, Liu Kuifang, Qing, Wang Ling, Guo Liping. Introduction
GB/T 19608.1—2004
Classification of special environmental conditions Part 1: Extreme heat" is one of the series of national standards developed by the national science and technology basic work project "Material standards for extreme (special) environmental conditions" mainly for the development and construction of western my country. This part specifies the environmental zeros and severity levels of electromechanical products in extreme (special) environmental conditions. Various types of products shall select the applicable items and levels according to the degree of environmental impact they are subjected to.
IEC publication 60721·2·1 "Classification of environmental conditions: natural environmental conditions, temperature and humidity" divides the world into 9 climate types, 6 of which exist in my country, with special natural environments. Among them, dry and hot areas account for a large proportion in northwest my country, and extreme heat environmental conditions will have a great impact on the use of electromechanical products. Therefore, electromechanical products used in hot and dry environmental conditions must have good environmental adaptability and should have corresponding protective functions. These special natural environments have a great impact on the material products under normal conditions. It has a great impact on the normal use of substances under special environmental conditions. In the past, China did not conduct much research on the performance of some substances and basic equipment in the above-mentioned special natural environments. There is still a gap in basic research on special conditions, research on the adaptability of materials and equipment to special conditions, and the formulation of these basic standards, including the determination and classification of condition limits, simulation test methods, and technical measures to ensure the normal use of substances under extreme conditions. There is a lack of systematic collection and research on data for special conditions such as plateaus, dry heat, and deserts, as well as a lack of systematic research on the serious harm caused by special conditions to the supporting infrastructure of major industrial projects. If these problems are not solved, it will directly affect the implementation of major engineering projects in my country under special conditions. The "Material Standards for Extreme (Special) Environmental Conditions" project is expected to be completed through the study of special environmental conditions such as plateaus, dry heat, and deserts. Research on basic engineering materials and electromechanical products, and formulation of basic national standards. The content involves the standardization system of plateau electromechanical equipment, special environmental terms, classification of special environmental conditions, general rules for protective shells, guidelines for artificial simulation tests of high altitude seas, metal materials, polymer materials, important electromechanical equipment, and plateau adaptability requirements of engineering machinery and equipment. A total of 25 national standards have been completed or are in progress: (1) Special environmental conditions terms have been submitted for approval) (2) Classification of special environmental conditions (high source) (has been published) (3) Classification of special environmental conditions (dry heat) (has been published) (4) Classification of special environmental conditions (heat) has been published) (5) "Special environmental conditions protection types and codes\ (has been published) (6) "Special environmental conditions environmental test methods Part 1: General (mountain submission for approval) (7) Special environmental conditions, environmental test methods Part 2: Artificial simulation test methods and guidelines for electrical and electronic products (including communication equipment) have been submitted for approval)
(8) "Special environmental conditions environmental test methods Part 3: Human (9) "Special Environmental Conditions General Technical Conditions for Plateau Electrical and Electronic Products" has been submitted for approval (10) "Special Environmental Conditions: High Voltage Electrical Equipment Design, Selection and Inspection Specifications (has been submitted for approval) (11) "Special Environmental Conditions High Voltage Machinery Part 1: Plateau Requirements for Internal Combustion Power Machinery has been submitted for approval) (12) "Special Environmental Conditions High Voltage Machinery Part 2: Plateau Requirements for Engineering Machinery has been submitted for approval) (3) Special Environmental Conditions High Voltage Machinery Part 3: Plateau Type Engineering Machinery Selection and Acceptance Specifications (has been submitted for approval) (14) "Aluminum Profiles for Rail Vehicle Structures under Special Environmental Conditions" (has been submitted for approval) () "Special Environmental Conditions High Voltage Electrical Products Protection Requirements··Lightning, Dew Protection and Pollution Migration (Drawings Submitted for Approval) (16) Special Environmental Conditions High Voltage Electrical Equipment Technical Requirements Low Voltage Electrical Appliances have been submitted for approval) (17) Special Environmental Conditions High Voltage Electrical Equipment Technical Requirements Low Voltage Switchgear" has been submitted for approval GB/T 19608.1—2004
(1 person) Special Environmental Conditions
(19) Special Environmental Conditions
(20) Special Environmental Conditions
(21) Special Environmental Conditions
(22) Special Environmental Conditions
(23) Special Environmental Conditions
(24) Special Environmental Conditions
(25) Special Environmental Conditions
Technical requirements for electrical equipment of high-voltage electrical appliances and switchgear (positive (Under development) Requirements for internal combustion engine power stations in high altitude areas\(Under development) Alloy contact wire for electric trains (Under development) Selection guidelines Part 1: Anti-expansion of metal surfaces (Submitted for approval) Selection guidelines Part 2: Polymer materials (Submitted for approval) Plateau natural environment test guidelines - Internal combustion power machinery》Under development) Plateau natural environment test guidelines - T-engine construction machineryUnder development) Plateau standard promotion system for electromechanical equipment》
1Fange
Special environmental conditions classification Part 1: Dry heat CB/T 19608.1—2004
This part of GB/I19608 specifies the environmental parameters and severity levels of electromechanical products under dry heat environmental conditions. This part is applicable to electromechanical products used under dry heat environmental conditions. The environmental conditions specified in this part include the environmental parameters and severity levels that the products are subjected to and affected by. Various types of products can select the applicable items and levels according to the degree of environmental impact they are subjected to. 2 Normative references
The clauses in the following documents become clauses of this part through reference in this part of GB/T 19608. For all references with a date, 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 all references without a date, the latest versions are applicable to this part.
B/T 4798.10—1991 Introduction to environmental conditions for application of electric and electronic products (neIFX60721-3-0: 1984) GB/T 11804 Terminology of environmental conditions for electric and electronic products 3 Terms and definitions
The terms and definitions established in GB/T 11804 apply to this part. 4 Environmental conditions
4.1 Classification of environmental conditions
Thermal environmental conditions are divided into 6 types: climatic conditions. Special climatic conditions, biological conditions, chemically active substance conditions, mechanically active substance conditions, mechanical conditions,
4.2 Classification of environmental conditions
Each type of environmental condition is composed of multiple environmental parameters. For example, climatic conditions are composed of high temperature, low temperature, temperature change, solar radiation intensity and other environmental parameters. Each environmental parameter can be divided into different levels according to the different environments. For example, the solar radiation intensity is divided into two levels: 700W/m2 and 1120W/m2.
4.3 Environmental codes
4.3.1 Environmental condition characteristics are expressed by environmental codes. Environmental codes consist of three parts: product use location, environmental condition type, and environmental condition severity level, which are represented by numbers or Latin letters. The order is as follows: a) transportation and use location (represented by numbers); b) environmental condition type (represented by Latin letters); c) environmental condition severity level (represented by numbers or numbers and Latin letters). 4.3.2 is in accordance with G/T4798.10-19913.2, the places of transportation and use of products are indicated by the numbers 2, 3 and 4: 2 indicates small product transportation items:
-3 indicates that the product is used in a fixed place with weather protection (indoors or under a shed), and ..4 indicates that the product is used in a fixed place without weather protection (outdoor). 4.3.3 According to the provisions of 3.2 in GB/T4798, 10-1991, the types of environmental conditions are indicated by Latin letters: GB/T 19608.1-2004
-K indicates climatic conditions;
-..Z indicates special climatic conditions (heat radiation, ambient air movement, water sources other than rain), --- B indicates biological conditions;
C indicates chemically active substance conditions;
S indicates mechanically active substance conditions;
M indicates mechanical conditions.
4.3.4 According to the provisions of 3.2 of GB/T 4798.10-1991, the severity of environmental conditions is expressed by numbers. The larger the number, the more severe the conditions.
4.3.5 Examples of environmental codes for indicating climatic conditions: K
Severe suffixes
Climatic conditions
Climate protected places
4.3.6 Examples of environmental codes for indicating multiple types of environmental conditions: 3K6H/322/324/327/3B2/3C3/3S3/3M2 Mechanical conditions
Mechanically active substance conditions
Chemically active substance conditions
Biological conditions
Special climatic conditions (dripping water)
Special climatic conditions (surrounding air movement) Special climatic conditions (heat radiation)
Air conditions
4.4 Severity levels of various environmental conditions
4. 4. 1 Climatic conditions
The severity levels of climatic conditions are shown in Table 1.
Environmental parameters
Extreme maximum
Average maximum in the hottest month
Maximum daily temperature
Rate of change of temperature
Relative humidity
C:/nin
Severity level of climatic conditions
Severity level
Environmental parameters
Average relative humidity
Intensity of solar radiation
Precipitation (including rainfall, etc.)
Highest surface soil humidity
Lowest surface soil temperature
Table 1 (continued)
GH/F 19608.1--2004
Extreme maximum temperature refers to the highest air temperature that occurs once every few years and lasts for about 10 years. Hot areas such as Tuzifan have experienced an extreme maximum temperature of 48 hours. The annual maximum temperature refers to the multi-year average temperature of the highest humidity that occurs each year. The average maximum temperature of the hottest month refers to the average monthly maximum temperature that occurs in the hottest month of the season. 4.4.2 Special climatic conditions The severity of special climatic conditions is shown in Table 2. Table 2 Severity of special climatic conditions Environmental factors Thermal radiation Air quality, Other water source conditions other than rain 4.4.3 Biological conditions There are heat radiation conditions in places with no climate protection, such as indoor heating systems or near boilers. Heat radiation conditions can be ignored. There are heat radiation conditions in places without climate protection, such as heat radiation generated by production conditions. In hot areas, the climate is dry, and there is no harm from bacteria and fungi. The main harm is from rats and other rodents. The severity level of biological conditions is shown in Table 3. Table 3 Severity level of biological conditions Environmental parameters Fauna Climate-protected places Rodents and other animals that harm products Termites 4.4.4 Chemically active substances conditions Chemically active substances mainly refer to gases with corrosive properties. The severity level of chemically active substances conditions is shown in Table 4. No climate protection place
Rodents and other animals that endanger products, except mosquitoes
GB/T 19608.1—2004
Environmental barriers
Sulfur dioxide
Ammonium sulfide
31,4C1
Maximum value
Table 4 Severity level of chemical active substance conditions Level
Average value"
Maximum value
Average value
Maximum value
If the concentration value of one or more chemical gases in the atmospheric environment meets the values in this table, it belongs to this level. The average value is the average value of long-term values with a rate of at least one year: b
The maximum value is no more than 30 per day for at least one year min. limit value or peak value. 4.4.5 Mechanically active material conditions
The severity levels of mechanically active material conditions are shown in Table 5. Table 5 Severity levels of mechanically active material conditions are Climate protection sites
Environmental parameters
Sharp (floating)
mg/(m2-h)
Dust (sedimentation)
4.4.6 Mechanical conditions
3C4, 4C4
Average value
Non-climate protection sites
Maximum value
This standard uses the severity levels of acceleration and displacement to classify sinusoidal vibration conditions in the high-frequency and low-frequency ranges respectively. Random vibration is not considered. If there is sufficient information, it can also be considered to use the maximum impact without damping of the first level. The tooth response spectrum is graded for non-steady-state vibration including shock. The severity of mechanical conditions is shown in Table 6. The typical shock response spectrum is shown in Figure 1. Table 6 Severity of mechanical environmental conditions
Environmental parameters
Normal steady-state movement
Standard vibration (
Acceleration
Frequency range
Shock response
L Peak value
Acceleration α
Shock response
Spectrum I value
Acceleration.
Shock response
Spectrum II Peak value
Acceleration:
9~-200
9~~200
9--200
4. 5 Application of environmental conditions
Example of half-sine pulse duration
Spectrum type 1: duration 22ms
Spectrum type I: duration 11ms
Spectrum type II: duration 6n1s
Figure 1 Typical shock response spectrum (maximum response spectrum of the first level shock) For guidance on the application of environmental conditions, see Appendix A
GB/T 19608.1—2004
/Hz
GB/T 19608.1—2004
4.1 Overview
Appendix A
(Informative Appendix)
Guide to the application of special environmental conditionsbzxz.net
4.1.1 This part refers to the corresponding clauses of GB/T4798.3—1090.GB/T4798.4-1990, and specifies the environmental parameters and severity levels of climatic conditions, special climatic conditions, biological conditions, chemically active substance conditions, mechanically active substance conditions and mechanical conditions under dry hot environmental conditions.
A1.2 The codes of environmental condition levels are arranged in order from low to high according to the severity of the environmental parameters. The larger the code, the higher the severity. The higher the severity level, the lower the severity level. A.1.3 This part classifies dry hot environmental conditions. The main influences of thermal environment conditions on electromechanical products are dust, high humidity (air temperature and surface temperature), strong solar radiation (for outdoor products) and large daily temperature difference. All kinds of products should select appropriate parameters according to their characteristics and the influence of the monthly environment. For example, the maximum temperature of thermal protection relays and some electrical products that are sensitive to high temperatures should be selected as the extreme maximum value; the maximum temperature of products that will be affected by temperature rise can be the multi-year average of the most commercial temperature; products such as internal combustion engines that require air input for combustion must consider the influence of dust; products used in outdoor environments must consider the influence of strong solar radiation.
A.1.4 Special climatic conditions, biological conditions, chemically active material conditions, mechanically active material conditions and mechanical environmental conditions are determined according to the local environmental conditions around the product when it is used. They need to be considered in product design and selection in order to select the appropriate product protection type.
A.2 Applicable places
A,2.1 Climate conditions
* Applicable places for weather protection components:
--3K6H grade is applicable to places with climate protection; -4K4H grade is applicable to places without climate protection. A,2.2 Special climatic conditions
Special climatic conditions refer to additional heat, wind speed and various water sources caused by production conditions or other reasons. These environmental parameters are not caused by simple climatic conditions. Special climatic conditions include heat radiation, surrounding air movement, and water sources other than rain. The applicable places are selected according to Table 2.
A.2.3 Biological conditions
Applicable places for biological conditions:
-3B1 level is applicable to climate-protected places without biological hazards:: 3132 level is applicable to climate-protected places with rodents and other animals that endanger products (except ants):-·-B1 level is applicable to climate-free places with rodents and other animals that endanger products (except ants) A.2.4 Chemically active substance conditions
Chemically active substances refer to corrosive gases discharged from mud solid control systems and heating systems. Under certain humidity conditions (the relative humidity may reach more than 70% in the mud solid excavation system and its surroundings, splashing and spraying conditions in the tank), these gases will accelerate metal corrosion and damage the appearance of the product and the normal operation of the equipment. Applicable places for chemically active substance conditions:
-3C1, 4C! -3C2 and 4C2 are suitable for places with chemical pollution caused by industrial production; -3C3 and 4C3 are suitable for places with high concentration of chemical pollution caused by industrial production; -3C4 and 4C4 are suitable for places with high concentration of chemical pollution caused by industrial production. A.2.5 Mechanically active material conditions
Mechanically active material conditions Applicable places:
-3S1 level is applicable to places with dust-proof facilities to prevent the entry of dust and dirt; -3S2 level is applicable to places without dust-proof screening and not close to sand and dust sources; -3S3 level is applicable to places close to sand and dust sources: -3S4 level is applicable to places where sand and dirt are generated during processing; -4S1 level is applicable to rural areas not close to sand and dust sources: -4S2 level is applicable to areas close to sand and dust sources; -4S3 level is applicable to areas with wind or dust in the air due to geographical conditions: GB/T 19608.1--2004
-4S4 level is applicable to areas with high content of sand and dust in the air due to geographical or production conditions. A.2.6 Mechanical environmental conditions
The applicable places for mechanical environmental conditions are shown in Table A1. Table A.1 Applicable places for mechanical environmental conditions
Mechanical environmental condition code
3M1,3M2,4M1,4M2
3M3.3M4.4M3.4M4
3M5,3MR,4M5.4M6
3M7.3M8.4M7.4M8
A.3 Application examples
Applicable places
Places with low probability of vibration and impact or with anti-vibration and anti-impact measures Due to the uniqueness of the machinery or the line Places where perturbations are caused by vehicles, or impacts are caused by blasting, fighting, etc. Places where vibrations are caused by machinery or moving vehicles, or large-energy impacts are caused by attached devices, conveyor belts, etc. The product is directly installed on the machine, and the device itself causes large-energy vibrations and impacts. The general environment code is used to indicate the special environmental conditions of a certain equipment used outdoors in a refinery in Turpan, Xinjiang: Convenient use place: Fixed use in places without climate protection: Climate conditions: Dry tropical zone:
Special climatic conditions: There is heat radiation caused by production conditions, air movement of about 30 m/s, and water spray; Biological conditions: There are rodents and other animals that endanger the products except white mosquitoes; Chemically active substance conditions: There are dihydrogen sulfide and hydrogen peroxide gases with a maximum value of 10m/: Mechanically active substance conditions: Sand of about 4000 tng/tm: Mechanical conditions: There are vibrations of 4M6 level.
Therefore, the general code of the environmental conditions of this place of use is: 4K4H/122/124/428/1B1/4C:3/4S4/4M6. Environmental factors that have no influence can be omitted. A,4 Basic requirements for product environmental testing
The basic requirements for environmental testing of electromechanical products and application materials used in dry and hot environmental conditions (including corrosion, biological and mechanical vibration tests) are shown in Table A.2. Specific technical requirements should be further specified in the environmental technical requirements of the product. GB/T19608.1—2004
Product use
Indoor, outdoor and shed
Under normal conditions
Environmental test items
Solar radiation
Enclosure protection
Sandblasting and debris impact
Temperature change
Table A.2 Basic requirements for product environmental testing
Environmental test methods
Xenon lamp/rain
Ultraviolet rays, condensation
Electrical product enclosure protection level test
Stone impact test
High temperature test
Low temperature test
Temperature change test
|Basic technical requirements for products
Technical requirements
Materials of polymer components such as paint, plastic, rubber, etc. must meet the specified technical requirements after testing
Enclosure protection level shall not be lower than IP54, JP55
Surface coating of bare parts
Product functions should be normal
Product functions should be normal and run normally. Plastic and rubber parts should not be damaged due to cold brittleness or hardening, thereby affecting normal operation; paint should not crack or peel off
Product functions should be normal
Products installed in air-fired or directly cooled internal combustion engines should meet the specified technical requirements and not affect the normal functions of the products3 Application Examples
Applicable places
Places where the probability of vibration and impact is small or where anti-vibration and anti-impact measures are in place Places where perturbations are caused by machinery or moving vehicles, or where impacts are caused by blasting, fighting, etc. Places where vibrations are caused by machinery or moving vehicles, or where large impacts are caused by attached devices, conveyors, etc. The product is directly installed on the machine, and the device itself causes large vibrations and impacts. The general environmental code is used to indicate the special environmental conditions of a certain equipment used outdoors in a refinery in Turpan, Xinjiang: Convenient place of use: Fixed use in places without climate protection: Climate conditions: Dry tropical zone:
Special climatic conditions: There is heat radiation caused by production conditions, air movement of about 30 m/s, and water spray; Biological conditions: There are rodents and other animals that endanger products except white mosquitoes; Chemically active substance conditions: There are dihydrogen sulfide and hydrogen peroxide gases with a maximum value of 10m/s: - Mechanically active substance conditions: 4000 tng/tm sand: Mechanical conditions: There is 4M6 level vibration.
Therefore, the total code for the environmental conditions of this place of use is: 4K4H/122/124/428/1B1/4C:3/4S4/4M6. Environmental factors that have no influence can be omitted. A,4 Basic requirements for product environmental testing
The basic requirements for environmental testing of electromechanical products and application materials used in dry and hot environmental conditions (including corrosion, biological and mechanical vibration tests) are shown in Table A.2. Specific technical requirements should be further specified in the environmental technical requirements of the product. GB/T19608.1—2004
Product use
Indoor, outdoor and shed
Under normal conditions
Environmental test items
Solar radiation
Enclosure protection
Sandblasting and debris impact
Temperature change
Table A.2 Basic requirements for product environmental testing
Environmental test methods
Xenon lamp/rain
Ultraviolet rays, condensation
Electrical product enclosure protection level test
Stone impact test
High temperature test
Low temperature test
Temperature change test
|Basic technical requirements for products
Technical requirements
Materials of polymer components such as paint, plastic, rubber, etc. must meet the specified technical requirements after testing
Enclosure protection level shall not be lower than IP54, JP55
Surface coating of bare parts
Product functions should be normal
Product functions should be normal and run normally. Plastic and rubber parts should not be damaged due to cold brittleness or hardening, thereby affecting normal operation; paint should not crack or peel off
Product functions should be normal
Products installed in air-fired or directly cooled internal combustion engines should meet the specified technical requirements and not affect the normal functions of the products3 Application Examples
Applicable places
Places where the probability of vibration and impact is small or where anti-vibration and anti-impact measures are in place Places where perturbations are caused by machinery or moving vehicles, or where impacts are caused by blasting, fighting, etc. Places where vibrations are caused by machinery or moving vehicles, or where large impacts are caused by attached devices, conveyors, etc. The product is directly installed on the machine, and the device itself causes large vibrations and impacts. The general environmental code is used to indicate the special environmental conditions of a certain equipment used outdoors in a refinery in Turpan, Xinjiang: Convenient place of use: Fixed use in places without climate protection: Climate conditions: Dry tropical zone:
Special climatic conditions: There is heat radiation caused by production conditions, air movement of about 30 m/s, and water spray; Biological conditions: There are rodents and other animals that endanger products except white mosquitoes; Chemically active substance conditions: There are dihydrogen sulfide and hydrogen peroxide gases with a maximum value of 10m/s: - Mechanically active substance conditions: 4000 tng/tm sand: Mechanical conditions: There is 4M6 level vibration.
Therefore, the total code for the environmental conditions of this place of use is: 4K4H/122/124/428/1B1/4C:3/4S4/4M6. Environmental factors that have no influence can be omitted. A,4 Basic requirements for product environmental testing
The basic requirements for environmental testing of electromechanical products and application materials used in dry and hot environmental conditions (including corrosion, biological and mechanical vibration tests) are shown in Table A.2. Specific technical requirements should be further specified in the environmental technical requirements of the product. GB/T19608.1—2004
Product use
Indoor, outdoor and shed
Under normal conditions
Environmental test items
Solar radiation
Enclosure protection
Sandblasting and debris impact
Temperature change
Table A.2 Basic requirements for product environmental testing
Environmental test methods
Xenon lamp/rain
Ultraviolet rays, condensation
Electrical product enclosure protection level test
Stone impact test
High temperature test
Low temperature test
Temperature change test
|Basic technical requirements for products
Technical requirements
Materials of polymer components such as paint, plastic, rubber, etc. must meet the specified technical requirements after testing
Enclosure protection level shall not be lower than IP54, JP55
Surface coating of bare parts
Product functions should be normal
Product functions should be normal and run normally. Plastic and rubber parts should not be damaged due to cold brittleness or hardening, thereby affecting normal operation; paint should not crack or peel off
Product functions should be normal
Products installed in air-fired or directly cooled internal combustion engines should meet the specified technical requirements and not affect the normal functions of the products
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.