Climatic version and placement category according to GOST 15150 69 y1. Marking - climatic version U1, U2, U3, T1, T2, T3, UHL1, UHL4, UT1.5

GOST 15150-69 applies to all types of machines, instruments and other technical products and establishes the macroclimatic zoning of the globe, performance, category, operating conditions, storage and transportation of products in terms of the impact of climatic environmental factors

Types of climatic versions, designation

• У - temperate climate (+40/-45 оС);
• CL - cold climate (+40/-60 °C);
• UHL - temperate and cold climate (+40/-60 °C);
• T - tropical climate (+40/+1 °C);
• M - maritime temperate cold climate (+40/-40 °C);
• O - general climatic version (except for marine) (+50/-60 °C);
• OM - general climatic marine version (+45/-40 °C);
• В - all climatic version (+50/-60 оС).

Climatic performance in Central Antarctica is not determined by GOST 15150-69. Multiple macro climatic regions can be combined into a group of macroclimatic regions (for example, the category of climatic modification UHL, T).

Designation example:

Bellows compensator KSO 200-16-160 UHL 1.

This means that a bellows expansion joint with a nominal diameter of 200 mm, a working pressure of 16 bar and a compensating capacity of 160 mm is used in a moderately cold climate at temperatures up to minus 60 ° C on outdoors.

The number after the letters indicates the accommodation category:

• 1 - open air;
• 2 - the same as 1 only without direct sunlight and without precipitation;
• 3 - indoors without climate control;
• 4 - indoors with ventilation and heating;
• 5 - in rooms with high humidity, without artificial regulation of climatic conditions.

General provisions GOST 15150-69

1. GOST 15150-69 should be used in the design and manufacture of products in accordance with the climatic modifications reflected in it. In particular, it should be used in the preparation of technical specifications for the development or modernization of products, as well as in the development state standards and technical specifications that establish requirements regarding the impact of environmental climatic factors for a group of products, and in the absence of these group documents - for certain types products. All products must be manufactured in accordance with climatic modifications in accordance with GOST 15150-69
2. Products must maintain their parameters within the limits established by the technical specifications, standards or specifications during the service life and shelf life specified in the specifications, standards or specifications, after and (or) in the process of exposure to climatic factors, the values ​​of which are established by this standard i.e. must comply with climatic modifications in accordance with GOST 15150-69.
3. Products are intended for operation, storage and transportation in the range from the upper to the lower value of these climatic modifications, while in addition to the ranges of climatic factors within which the operability of the products is ensured during operation, one or more narrower ranges of climatic factors can be set, within which provides a narrower range of parameter deviations (for example, more high accuracy regulation or measurement), i.e. climatic performance must comply with the category according to GOST 15150-69.
4. For specific types or groups of products, the types of influencing climatic factors affecting the climatic performance according to GOST and their nominal values ​​​​are set depending on the operating conditions of the products in the relevant technical specifications, standards and specifications. If there are documents establishing for groups of products the relationship between the values ​​of factors, with the specified climatic modifications in accordance with GOST 15150-69, one should be guided by the instructions of these documents
5. It is allowed to operate products in macroclimatic regions and those that differ from those for which the products are intended, if the climatic factors during the operation period do not go beyond the nominal values ​​established for these products. For example, products of the UHL4 climatic modification type can be operated in the UHL2 conditions during the summer dry period.
6. It is allowed to operate products in conditions where the values ​​of climatic factors go beyond the established nominal values, if service life deviations are acceptable. At the same time, the admissibility of operation, the values ​​of climatic factors for performance, the permissible deviations of the service life are agreed with the supplier of the products.
7. In accordance with economic and technical feasibility, it is recommended to manufacture products suitable for operation in several areas established by this standard, i.e. the category of climatic modification according to GOST 15150-69 should cover several climatic regions.
8. Products can also be designed for operation in several macroclimatic regions; in these cases, combinations various conditions operation or storage with periods of stay in these conditions are set in the standards or technical specifications for products, climatic modifications (category of climatic modification) must be indicated in accompanying documents for goods.
9. A macroclimatic region with a temperate climate UHL (category of climatic performance UHL) includes areas where the average annual absolute maximum air temperature is equal to or lower than plus 40°C, and the average annual absolute minimum air temperature is equal to or higher than minus 45°C.
10. It is allowed to single out a macroclimatic subregion with a warm temperate macroclimate subtype from a macroclimatic region with a temperate climate, for which the average of the annual absolute minimum air temperatures is equal to or higher than minus 25 °C.
11. The macroclimatic region with a cold climate KhL (climatic modification category KhL) includes areas where the average annual absolute minimum air temperature is below minus 45°С. The region of cold climate UHL (category of climatic modification UHL) is indicated on the map.

By agreement with the customer, it is allowed to supply products designed for a temperate climate U1 to areas within 50 km from the southwestern and southeastern borders of a macroclimatic region with a cold climate on the territory of the Russian Federation.
Federation.

Products placed on mobile installations intended for delivery to the coast of the Okhotsk (to the north of the mouth of the Uda River) and the Bering Seas (with the exception of the Kamchatka Peninsula) must be manufactured in the HL version.

Temperature values ​​according to climatic version

GOST 15150-69 applies to all types of machines, instruments and other technical products and establishes the macroclimatic zoning of the globe, performance, category, operating conditions, storage and transportation of products in terms of the impact of climatic environmental factors

Types of climatic versions, designation

• U - temperate climate (+40/-45 o C);
• CL - cold climate (+40/-60 o C);
• UHL - temperate and cold climate (+40/-60 o C);
• T - tropical climate (+40/+1 o C);
• M - maritime temperate cold climate (+40/-40 o C);
• O - general climatic version (except for marine) (+50 / -60 ° C);
• OM - general climatic marine version (+45 / -40 ° С);
• В — all climatic version (+50/-60 о С).

Climatic performance in Central Antarctica is not determined by GOST 15150-69. Several macroclimatic regions can be combined into a group of macroclimatic regions (for example, the category of climatic version UHL, T).

Designation example:

This means that the bellows expansion joint with a nominal diameter of 200 mm, a working pressure of 16 bar and a compensating capacity of 160 mm is used in a moderately cold climate at temperatures up to minus 60 ° C in the open air.

The number after the letters indicates the accommodation category:

• 1 - open air;
• 2 - the same as 1 only without direct sunlight and without precipitation;
• 3 - indoors without climate control;
• 4 - indoors with ventilation and heating;
• 5 - in rooms with high humidity, without artificial regulation of climatic conditions.

General provisions GOST 15150-69

1. GOST 15150-69 should be used in the design and manufacture of products in accordance with the climatic modifications reflected in it. In particular, it should be used in the preparation of technical specifications for the development or modernization of products, as well as in the development of state standards and specifications that establish requirements regarding the impact of climatic environmental factors for a group of products, and in the absence of these group documents - for certain types of products . All products must be manufactured in accordance with climatic modifications in accordance with GOST 15150-69
2. Products must maintain their parameters within the limits established by the technical specifications, standards or specifications during the service life and shelf life specified in the specifications, standards or specifications, after and (or) in the process of exposure to climatic factors, the values ​​of which are established by this standard i.e. must comply with climatic modifications in accordance with GOST 15150-69.
3. Products are intended for operation, storage and transportation in the range from the upper to the lower value of these climatic modifications, while in addition to the ranges of climatic factors within which the operability of the products is ensured during operation, one or more narrower ranges of climatic factors can be set, within which provide a narrower range of parameter deviations (for example, higher accuracy of regulation or measurements), i.e. climatic performance must comply with the category according to GOST 15150-69.
4. For specific types or groups of products, the types of influencing climatic factors affecting the climatic performance according to GOST and their nominal values ​​​​are set depending on the operating conditions of the products in the relevant technical specifications, standards and specifications. If there are documents establishing for groups of products the relationship between the values ​​of factors, with the specified climatic modifications in accordance with GOST 15150-69, one should be guided by the instructions of these documents
5. It is allowed to operate products in macroclimatic regions and those that differ from those for which the products are intended, if the climatic factors during the operation period do not go beyond the nominal values ​​established for these products. For example, products of the UHL4 climatic modification type can be operated in the UHL2 conditions during the summer dry period.
6. It is allowed to operate products in conditions where the values ​​of climatic factors go beyond the established nominal values, if service life deviations are acceptable. At the same time, the admissibility of operation, the values ​​of climatic factors for performance, the permissible deviations of the service life are agreed with the supplier of the products.
7. In accordance with economic and technical feasibility, it is recommended to manufacture products suitable for operation in several areas established by this standard, i.e. the category of climatic modification according to GOST 15150-69 should cover several climatic regions.
8. Products can also be designed for operation in several macroclimatic regions; in these cases, combinations of various operating or storage conditions with periods of stay in these conditions are established in the standards or technical specifications for products, climatic modifications (climatic modification category) must be indicated in the accompanying documents for the goods.
9. A macroclimatic region with a temperate climate UHL (category of climatic performance UHL) includes areas where the average annual absolute maximum air temperature is equal to or lower than plus 40°C, and the average annual absolute minimum air temperature is equal to or higher than minus 45°C.
10. D it is omitted from a macroclimatic region with a temperate climate to distinguish a macroclimatic subregion with a warm temperate macroclimate subtype, for which the average of the annual absolute minimum air temperatures is equal to or higher than minus 25 °C.
11. The macroclimatic region with a cold climate KhL (climatic modification category KhL) includes areas where the average annual absolute minimum air temperature is below minus 45°С. The region of cold climate UHL (category of climatic modification UHL) is indicated on the map.

By agreement with the customer, it is allowed to supply products designed for a temperate climate U1 to areas within 50 km from the southwestern and southeastern borders of a macroclimatic region with a cold climate on the territory of the Russian Federation.
Federation.

Products placed on mobile installations intended for delivery to the coast of the Okhotsk (to the north of the mouth of the Uda River) and the Bering Seas (with the exception of the Kamchatka Peninsula) must be manufactured in the HL version.

Temperature values ​​according to climatic version

Modern manufacturers of machines, appliances and other electrical products are required to adhere to sufficient a large number all kinds of legal documents. Therefore, the offered goods will meet both the requirements of the buyer and the requirements of the quality control authorities. One of these conditions is the climatic performance.

Terminology

Familiarization with each question must begin with a study of the definitions used. Therefore, to begin with, we will try to give the most understandable formulation. So, climatic performance is a system of categories that includes the conditions for normal operation, transportation and storage of technical products relative to the macroclimatic zoning of the surface of the globe. In other words, this term defines under what conditions it is possible to operate one or another electrical installation. In turn, binding to regions allows taking into account various climatic conditions.

Normative documents

Such a system is certified by the current legislation and is included in GOST 15150 "Climatic version". This standard applies to all types and varieties of instruments, machines and other technical products. All requirements of the above document are mandatory. Exceptions are only conditions marked "recommended" or "permissible". Like any other, GOST "Climatic performance" lists the areas of application of the regulatory documentation in question. Let's consider some of them.

1. This standard applies to both the design and manufacture of technical products. In addition, its observance is mandatory when drawing up assignments for the development and subsequent modernization, the creation of standards.

2. The climatic version of each product, as well as other technical parameters, must be kept within the established values.

3. Products manufactured by manufacturers are intended for storage, operation and transportation within the ranges of values ​​of the factors under consideration. In exceptional cases, they may contain a list of permissible deviations during operation.

4. In accordance with the technical and economic feasibility it is recommended to produce technical products suitable for operation in several macro-districts.

Currently, there are several categories that are based on the division of territories with similar environmental conditions. As a rule, the designation of a particular group is carried out using the appropriate letter marking. Let's take a closer look at each category.

U marking

In the Latin version, it is denoted by the letter "N". A similar climatic design is used for areas characterized by moderate environmental conditions. In addition, it should be remembered that technical products marked in this way may be subject to operation in a warm humid, hot dry, as well as very hot dry macroclimatic region, in which the average value for the annual absolute maximum air temperatures is above 40 degrees Celsius, and the humidity value is 80 percent or more. In this case, such characteristics should be observed for more than 12 hours every day for a two-month continuous period. In turn, a temperate climate has the following characteristics atmospheric air: the annual absolute maximum temperature does not exceed forty degrees Celsius. From the foregoing, we can conclude that the climatic version U has the following temperature range: from -45 0 С to +40 0 С.

HL marking

In the Latin version, it is denoted by the letter "F". This group is characterized by cold climates. The annual absolute temperature minimum is -45 degrees Celsius. Electrical equipment with this type of marking is designed for operation within the following limits: -60 0 С - +40 0 С.

UHL marking

In the Latin version, it is denoted by the letters "NF". GOST "Climatic performance" refers to this category areas with moderate and cold conditions environment. The temperature range of normal operation of products with such markings has the same limits as those of the previous group. In addition, products released with this category can be used in the same cases as products of group Y. For example, in hot and very hot dry climates, subject to the above conditions.

TV marking

In the Latin version, the letter designation is "TN". Such a climatic design is characterized by the operation of technical products in wet tropical environment environment. Atmospheric air has the following parameters: temperature over 20 degrees Celsius, humidity over 80 percent. A special condition is the preservation of the above requirements for more than 12 hours every day for two months continuously. The operating temperature limits for normal operation are +1 - +40 0 С.

Vehicle marking

In the Latin version, it is denoted by the letters "TA". Despite the similarity in name with the previous category, this group has many differences. The average value of the annual absolute maximum temperatures is +40 degrees Celsius. The range of such values ​​when used ranges from -10 to +50 0 С.

T marking

In the Latin version, it is denoted by the letter "T". Technical products marked with this marking are capable of normal operation in tropical climates.

Marking O

In the Latin version, it is denoted by the letter "U" and is a general climatic version. Products characterized in this way can be used in all macro-climatic regions of the earth, except for very cold environmental conditions. Temperature limits range from -60 0 С to +50 0 С.

Marking M

In the Latin version, it is also denoted by the letter "M". This category includes electrical products that are intended for normal operation in macroclimatic regions in a moderately cold marine-type environment.

TM marking

In the Latin version, it is denoted by the letters "MT" and includes territories characterized by tropical marine atmospheric air conditions. This category includes technical products intended for operation on coastal navigation vessels or any other vessels used only in the redistribution of these areas.

OM marking

In the Latin version, the letter designation is "MU". The presented group includes machines, devices and other products, the normal operation of which will be carried out in areas with both tropical and temperate cold climates. Thus, various vessels with unlimited navigation areas can be attributed to the category under consideration.

Marking B

In the Latin version, it is denoted by the letter "W". This group is quite specific, since it includes electrical products intended for widespread use, both on land and on water. Such a performance is called all-climatic. A feature is the impossibility of application only in areas characterized by very cold environmental conditions. Temperature limits for normal operation range from -60 to +50 degrees Celsius.

Locations

At present, electrical products are marked in a special way (climatic version and placement category are indicated). In this regard, the marking is a combination of an alphabetic and numerical designation. This allows buyers to see at a glance what suits them. this device or not.

Category 1

Technical products marked in this way are intended for outdoor use. Therefore, they are exposed to the totality of atmospheric factors. For example, climatic version U1.

Category 2

It assumes normal operation of the equipment under a canopy or in rooms subject to fluctuations in the values ​​of atmospheric air parameters almost to the same extent as open space. For example, it can be a body.

Category 3

This group includes technical products that must be used only in enclosed spaces. At the same time, the latter should have the following features: the absence of artificial regulators of environmental conditions; exposure to dust and sand is significantly less than outdoors. Climatic version U3 can be used in rooms with thermal insulation made of metal, wood, concrete and other materials. Such objects can be classified as irregularly heated. Thus, the climatic version of U3 implies the absence of precipitation, direct sunlight, a significant reduction in the impact of wind and moisture.

Category 4

Equipment belonging to this group can be used in rooms characterized by artificial regulation of environmental parameters, well-ventilated underground buildings. It implies the absence of direct solar radiation, wind, moisture, sand.

Category 5

Such technical products can be used in rooms with high humidity values. For example, in underground rooms, in the soil, as well as on ships.

Marking (brief description protective coatings, types of climatic modification and categories of product placement, degrees of protection). Products designed for various climatic regions, categories, operating and storage conditions in terms of the impact of climatic environmental factors are marked in accordance with GOST 1515069. According to the degree of protection, the products provided by the shells are marked in accordance with GOST 1425496. Climatic modifications are marked: U1, U2, U3, T1, T2, T3, UHL1, UHL4, UT1.5.

U1- products for use in areas with a temperate climate with placement category 1 (outdoors).

U2- products for operation in areas with a temperate climate with placement category 2 (under a canopy or in rooms with free air access).

UZ- products for use in areas with a temperate climate with placement category 3 (indoors with natural ventilation).

Т1.Т2.ТЗ- products for operation in areas with both dry and humid tropical climates, with placement in the open air, under a canopy, in enclosed spaces with natural ventilation.

UHL1- products for operation in areas with a temperate and cold climate with placement category 1 (outdoors).

UHL4- products for operation in areas with a temperate and cold climate with placement category 4 (in rooms with artificially controlled climatic conditions).

UT1.5- products for use in areas with a temperate climate
and in areas with a dry or humid tropical climate, both with placement category 1 (outdoors) and placement category 5 (in rooms with high humidity).

Index "C" In the product labeling, it denotes a zinc coating obtained by hot dip galvanizing.

Letter "X" In the product labeling, it denotes a chemical resistant coating.

Special requirements for the material of products, due to low operating temperatures, are imposed by a temperate and cold climate (UHL). Therefore, the main requirement for products intended for operation in regions with UHF1 is that they must be made of materials that retain their properties at temperatures down to –70 ˚С.

It should be understood that products, for example intended for use in temperate areas of location category 1, may also be used in temperate areas of location category 2, 3 or 4, but not vice versa.
Similarly: products labeled UT1.5 can replace products labeled U1, U2, UZ, T1.T2.TZ.

When choosing this or that equipment, in addition to its functions and characteristics, one should also carefully consider the climatic version. Environmental conditions play an important role, the reliability and service life of the equipment will depend on the correct choice of climatic version. In Russia, this aspect is regulated by GOST 15150 "Versions for various climatic regions. Categories, operating conditions, storage and transportation in terms of the impact of environmental climatic factors."

Deciphering alphabetic and numeric values

Saying "climatic version of the equipment" usually means its category of installation. Below are the decoding of alphanumeric abbreviations.

Climatic performance

The letter designations of the climatic version of products and explanations for them are given in table 1.

Notes:

1. U and UHL products can be operated in warm humid, hot dry and very hot dry climatic regions in which the average of the annual absolute maximum air temperatures is > 40 ° C and / or a combination of temperature, ≥ 20 ° C, and relative humidity, ≥ 80% observed more than 12 hours a day for a continuous period of more than two months a year;
2. These executions may be designated by the term "tropical execution".

Installation category

Examples of decoding climatic version

When you need to understand what climate the equipment is intended for:

UHL4- For temperate and cold climates, installation category 4;
TV1- For humid tropical climates, installation category 1.

When it is necessary to clarify the required climatic version of the equipment according to the operating conditions:

It is supposed to operate the equipment at an altitude of up to 1000 m, in a closed room with artificial ventilation. The room temperature is maintained around the clock +18 o C ÷ +23 o C and humidity 55% ÷ 65% at 20 o C - equipment of all climatic modifications is suitable for these criteria, but UHL4.1 and TV4.1 are most optimal;
It is supposed to operate the equipment at a height of up to 1000 m under a canopy. The annual temperature difference is -32 o C ÷ +44 o C with the lowest temperature -46 o C and the highest temperature +45 o C (recurrence about 1 time in 50 years). The highest humidity value is 90% at 25 o C. - U1, HL1, UHL1 versions are suitable for climatic conditions.

Normal values ​​of climatic factors during operation and requirements for products

The normal values ​​of climatic factors indicated below refer to the operation of products at altitudes up to 1000 m above sea level. For products operated at altitudes above 1000 m (including both above 1000 m and up to 1000 m), other values ​​​​of climatic factors (except for pressure and lower temperature values) can be set. In this case, the upper and average temperatures for the operation of products at altitudes from 1000 m to 4300 m can be calculated by decreasing those indicated in Table 4 by 0.6 o C every 100 m.

If there is a special technical justification, confirmed by measurements of the values ​​of climatic factors, their nominal values ​​can be set different from those indicated below.

Ambient temperature

Ambient temperature values ​​are shown below in table 4. For products of category 1, if their surface is exposed to solar heating, the upper, middle and limit operating temperatures should be taken higher than those indicated in table 4:

• For surfaces that have a white or silver-white color - at 15 o C;
• For surfaces that have a different color - at 30 o C.

Requirements for ambient temperature apply to products of all designs and categories. Air temperature limit requirements are set only for products with a high probability of failure-free operation, if specified in the technical specifications for the products (the probability of occurrence of temperature limits is 0.00001) .

Notes:

1. For performance specifications, the lower operating temperature value is taken equal to -25 o C, the lower limit operating temperature value is -30 o C;
2. For some areas with a subtropical climate, they take a value of -10 o C;
3. For some areas in China, Turkey, Afghanistan, the value is -20 o C;
4. For ships not used in areas of the Arctic Ocean in winter time, lower operating temperature -30 o C;
5. For operational storage and transportation, the value is taken the same as for category 3, and for the type of climatic modification B4 - as for OM3;
6. For execution T;
7. For the execution of the vehicle;
8. For some points in the Central Sahara, the temperature is assumed to be +55 o C.

Change in air temperature

The magnitude of the change in ambient temperature for 8 hours are given in table 6. Temperature change requirements apply to products of all designs and categories.

Cooling water temperature

Cooling water temperatures are shown in table 7 .

Notes:

1. Limit operating value +35 o C;
2. Limit operating value -4 o C;
3. Limit operating value +33 o C;

soil temperature

Operating soil temperatures for a depth of 1 m are given in table 8.

Air humidity

For products used only in sealed volumes (including those opened for inspection and repair), the relative humidity value is set:

• For unopened volumes or opened only in rooms with artificially controlled climatic conditions - as for category 4, UHL version;
• For volumes opened under any conditions - as for category 3 of the same design.

Operating values ​​of air humidity, namely, combinations of relative humidity and temperature are given in table 9.

Air humidity requirements apply to products of all designs and categories.

Notes:

1. The upper value of relative humidity indicated in the table is also standardized at more than low temperatures; at more high temperatures relative humidity is lower;
2. For marine vessels of the OM version, intended for a short stay in areas with a tropical climate, the values ​​​​of the combination of temperature and humidity can be taken the same as for the M version;
3. For products intended for coal mines, the moisture values ​​​​are taken the same as for version T;
4. For products of types of climatic modifications OM4 and OM5, installed in the engine and boiler rooms of ships, the upper limit operating value is 100% at +50 o C;
5. For the execution of HL of all categories of placement, except for 5; 5.1, average annual value - 85% at -6 o C;
6. For the execution of TM placement categories 1; 2; 5; 2.1; 5.1 also applies an average annual value of 70% at +29 o C;

Atmosphere pressure

Air pressure requirements apply to products of all designs and categories.

For ground products operated at an altitude of up to 1000 m above sea level, the following atmospheric pressure values ​​\u200b\u200bare set:

• Upper working value 106.7 kPa (800 mmHg);
• Lower operating value 86.6 kPa (650 mmHg);
• The lower limit value is 84.0 kPa (630 mmHg).

Wind speed

The requirement for the effect of wind speed is imposed only on products for which this is indicated in terms of reference. The upper limit value of wind speed for all climatic modifications is 50 m/s.

rain intensity

Requirements for exposure to rain apply only to products of category 1 and 1.1, if for the latter it is indicated in the terms of reference. The upper working value of rain intensity is:

• For climatic version U, TU, UHL (KhL), TS - 3 mm/min;
• For climatic version TV, T, O, M, TM, OM, V - 5 mm/min.

For climatic version U, UHL (KhL), to determine the combination of intensity and duration of rain, you should be guided by table 10.

Drop rate

Requirements for the impact of falling drops are imposed only on products for which this is indicated in the terms of reference. The upper working value of the intensity of falling drops for products M, TM, OM, B category 5, which are not built-in elements internal installation is 0.4 mm/min if their angle to the horizon is from 90 o to 45 o .

Composition of the atmosphere

The content of corrosive agents in the open air is shown in Table 11. The content of corrosive agents in the atmosphere of premises (volumes) of categories 2÷5 is less than that indicated in Table 11 and is established on the basis of measurements made for specific types of premises (volumes); if measurement data are not available, then the content of corrosive agents is assumed to be 30% - 60% indicated in table 11.

Notes: products of climatic versions M, TM, OM, as a rule, are intended for operation in an atmosphere of type III; products of executions U, TU, UHL (KhL), TS, T, TV and categories 4; 4.1; 4.2 - in an atmosphere of types II and / or I; execution O (except for categories 4; 4.1; 4.2) - in an atmosphere of type IV; execution B - in the atmosphere of types III and IV.

Dust exposure

The requirements for the dynamic abrasive action of dust are imposed on category 1 versions of the TC, O and B, only for the outer parts of the products. In other cases, these requirements are presented when it is indicated in the terms of reference.

The requirements for operability or dust tightness under static or dynamic exposure to dust are imposed on products of categories 1 of versions TS, O and B, which have moving or articulating parts. In other cases, these requirements are presented when it is indicated in the terms of reference.

Requirements for operability or dust tightness under static and dynamic impact are not imposed on parts and assemblies intended for placement in complete products with dust tight shells.

Requirements for the dynamic abrasive action of snow dust are imposed on the outer parts of products of the UHL (HL) category 1. In other cases, these requirements are imposed when it is indicated in the terms of reference.

Requirements for operability or dust tightness under static or dynamic exposure to snow dust are imposed on products of category 1 of execution U, UHL (KhL), O, V, if this is indicated in the terms of reference or other document for the product.

The operating values ​​of the parameters characterizing the action of dust are given in table 12:

solar radiation

GOST 15150 establishes the upper working value of the integral surface energy flux density of solar radiation for altitudes up to and above 15 km. Actually, for altitudes up to 15 km inclusive, its value is 1125 W / m 2, including the flux density of the ultraviolet part of the spectrum (280 ÷ 400 nm) - 68 W / m 2. At heights above 15 km, the upper working value of the integral surface energy flux density of solar radiation is 1380 W/m 2 , including the flux density of the ultraviolet part of the spectrum (200 ÷ 400 nm) - 140 W/m 2 .

Requirements for exposure to solar radiation are imposed only on products of category 1. At the same time, products of category 1.1 are required if this is indicated in the terms of reference. Requirements may not be imposed on the product as a whole, but only on those of its components and parts that, under operating conditions, are directly exposed to the sun.

Ozone concentration

The requirement for ozone exposure is imposed on products of categories 1 and 2, for which this is indicated in the terms of reference. The upper working value of the ozone concentration in the surface (driving) air layer is:

• For climatic modifications TV, UHL (KhL), T, O, TM, M, OM, V - 40 µg/m3;
• For versions TS, U, TU - 20 µg/m 3 .

Corrosion resistance

The requirements for corrosion resistance when exposed to salt fog are imposed on products of executions M, TM, OM, B of categories 1 and 2, as well as on products of categories 1 and 2 intended for operation on the coasts of other designs. Methods for evaluating corrosion resistance and allowable changes appearance products are installed in the terms of reference, standard or technical specifications.

Requirements for the impact of mold fungi are imposed on products (their parts, assemblies) of executions T, TV, TM, OM, O, B (except for products of category 4.1).

Waterproof

Requirements for water tightness (maintenance of parameters within the established values ​​after being in water for an hour, unless otherwise specified in the terms of reference) are imposed on products (their parts) that may be under water for a short time. Products subjected to sea water dousing under working conditions must maintain their parameters within the established values.

Icing

The requirements for performance in the event of frost falling on the product are imposed on the versions of UHL (KhL), M, OM, O, B of category 1, as well as products of category 2 intended for operation under a canopy. For electrical engineering products, this is expressed in the fact that after falling on it frost and its subsequent defrosting, there was no breakdown or surface overlap.

Requirements for the performance of products in the formation of ice on them are imposed (if it is indicated in the terms of reference) for products of execution U, TU, UHL (KhL), M, OM, O, B of category 1 and 2 (if the product will be operated under a canopy) having exposed moving parts and/or exposed break contacts .

Other requirements

If the products are intended for use in special conditions external environment (for example, the atmosphere of aggressive gases of chemical industries or inert gases, liquid medium, irradiation, saturation with atmospheric electricity), additional parameters of this environment must be taken into account.

Normal values ​​of climatic factors during testing

For testing products, GOST 15150 establishes a narrower range of climatic environmental factors (normal climatic test conditions):

• Temperature +25 ± 10 o C;
• Relative air humidity 45 ÷ 80%;
• Atmospheric pressure 84.0 ÷ 106.7 kPa (630 ÷ 800 mm Hg).

Note: At temperatures above 30 o C, the relative humidity of the air should not exceed 70%. It is allowed to set the value of 75% instead of the upper value of the range of 80%.

If other limits are adopted in the standards for individual groups of products, then the values ​​\u200b\u200blisted above become invalid.

If it is impossible to provide normal climatic test conditions, it is allowed to carry out tests in climatic conditions UHL4 or O4 with conversion to normal climatic test conditions. The recalculation procedure should be established in the regulatory and technical documentation for products and / or the test program.

List of sources used

1. GOST 15150-69 Machinery, instruments and other technical products. Versions for different climatic regions. Categories, conditions of operation, storage and transportation in terms of the impact of climatic environmental factors - Introduction. 01/01/71. - Moscow: Standartinform, 2006. - 59 p.