Climatic modification ukhl4 temperature. Climatic design of cable trays

Russian and Latin designations of climatic versions:

** Products in versions U And UHL can be operated in warm humid, hot dry and very hot dry climatic regions in accordance with GOST 16350, in which the average annual absolute maximum air temperature is above 40 ° C and (or) a combination of temperature equal to or above 20 ° C and relative humidity equal to or above 80%, observed more than 12 hours a day for a continuous period of more than two months a year.

Specific types or groups of exported products for a macroclimatic subregion with a warm temperate climate may be manufactured in climatic design THAT. if the design differences of products of this design from products of climatic design U are technically and economically justified.

*** These versions can be designated by the term "tropical version".

**** If the main purpose of the products is operation in an area with a cold climate and it is not economically feasible to use them outside this area, instead of the designation UHL recommended designation HL (F).

From the tropical macroclimatic region the following can be distinguished: humid tropical climate (designation TV) and dry tropical climate (symbol TS).

For marine macroregions the following designations may be used: TM- tropical maritime climate; OM- tropical and moderately cold maritime climate.

Second part of the designation (number):

Depending on the macroclimatic region (or regions) selected by the manufacturer, GOST 15150 (Table 3 page 9 and Table 6 page 11) assigns a range of air temperatures and relative humidity (the standard makes many amendments for specific cases, see original).

Ambient air temperature values ​​during product operation

* For products that, due to operating conditions, may have interruptions in operation at occasionally appearing temperatures below minus 40°C, the lower operating temperature value in technically justified cases can be taken equal to minus 40°C.

To comply with the specifications, the lower operating temperature value is taken to be minus 25°C, the lower limit operating temperature value is minus 30°C.

** For some areas with a subtropical climate, the value is taken to be minus 10°C.

*** For some areas in China, Turkey, Afghanistan, the value is taken to be minus 20°C.

**** For vessels not used in the Northern regions Arctic Ocean V winter time, the lower operating temperature value is taken to be minus 30°C.

***** For operation in a non-working state (for operational storage and transportation), the value is taken to be the same as for category 3, and for climatic version B4 - as for type OM3.

****** To perform T.

******* For vehicle execution.

******** For some points in Central Sahara the temperature is taken to be 55°C. It is allowed to set the temperature to 45°C for products developed before 07/01/89 and not supplied to areas of Iraq, countries Arabian Peninsula, Southern Iran and Central Sahara.

For surfaces exposed to solar heating, the upper, average and maximum operating temperature values ​​should be taken higher than those indicated in the table. 3 for products of category 1, by the following values:

• for surfaces that are white or silver-white in color - by 15°C;
• for surfaces having a color other than white or silver-white - by 30°C.

Note. For products of categories 1; 1.1; 2; 3, intended for the CIS regions, it is allowed to be guided by Appendix 4 regarding the lower temperature values.
The average temperature value is taken equal to the average annual value according to the table. 6.

* The upper value of relative humidity indicated in the table is also normalized at more low temperatures; with more high temperatures relative humidity is lower.

At a normalized upper value of 100%, moisture condensation is observed; at a normalized upper value of 80% or 98%, moisture condensation is not observed.
The value of 80% at 25°C corresponds to the value of 90% at 20°C or 50 - 60% at 40°C.

** 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.

*** For products intended for coal mines, the humidity values ​​are the same as for version T.

**** For products of climatic versions OM4 and OM5, installed in the engine and boiler rooms of ships, the upper limit operating value is 100% at 50°C.

* 5 For performance of HL of all placement categories except 5; 5.1, average annual value -85% at minus 6 °C.

* 6 For execution of TM placement categories 1; 2; 5; 2.1; 5.1 the annual average value of 70% at 29 °C also applies

For products used in outdoor conditions (placement category 1), which can heat up sun rays, the upper values ​​of operating and limit temperatures increase by:

• +15ºС - white or silver-white surface;
• +30ºС - surfaces with colors different from those indicated above.

At a normalized upper value of relative humidity of 100%, condensation forms; at normalized values ​​of 80% and 98%, moisture condensation does not occur.

The combination of letters and numbers gives the climate version and placement category:

• U1, U2, U3 (moderate macroclimate, work outdoors or indoors);
• HL1, HL2, HL3 (cold macroclimate, operation outdoors or in a building);
• UHL1, UHL2, UHL3, UHL4 (a combination of moderate and cold macroclimate, do not confuse the number “3” with the letter “Z”);
• T1, T2, T3, T4;
• O1, O2, O3.

Dissemination of the state standard GOST 15150-69

All requirements set out in this standard are mandatory, except for the requirements defined as recommended or permitted.
The standard is applicable to all types of machines, instruments and other technical products. Climatic GOST 15150 divides the globe into climatic regions, and also defines designs, categories, operating conditions, storage and transportation.

• general provisions applicable, in particular, for circuit breakers;
• description of climatic versions and product categories;
• determination of normal values ​​of environmental climatic factors;
• requirements for products (circuit breakers) regarding climate impacts;
• requirements for products in terms of nominal values ​​of climatic factors during operation;
• effective values ​​of climatic factors;
• operating conditions of metals and other materials;
• how to use temperate climate products in cold or tropical areas;
• application of products on higher altitude than the specified nominal value;
• description of storage and transportation conditions;
• several appendices detailing some of the factors.

Inconsistency between this climate standard GOST 15150-69 and the international IEC

For several compelling reasons, it is impossible to talk about work to bring into compliance with the international IEC standard and regulations in the CIS.

The difference in standards is as follows (disadvantages of the IEC):

• there is no clear division between climates in the IEC;
• there is an irrational grouping of climates;
• each specific operating condition is assigned its own climate class based on a single climate parameter;
• in the international system there are no divisions into marine and oceanic climates;
• In the CIS, the international IEC selects unsuccessful lower temperature values, which leads to inappropriate climatic zoning.

IEC 721-3 series standards on this moment subject to revision, therefore the harmonization of climate regulatory documents cannot yet be implemented.

Some examples of climatic versions and placement categories

• Example UHL1. Flexible cable of the KG brand for flexible connection of electrical installations, as well as power cable of the VVG brand are produced in the UHL1 version (suitable for moderate and cold areas when working under the influence of atmospheric factors).
• Example UHL3. Most circuit breakers are assigned the UHL design (for macroclimatic areas with temperate and cold climates) placement category 3 (operation in enclosed spaces with natural ventilation, where the effects of temperature, humidity and dust are lower than in open space; no exposure to rain, snow, solar radiation , wind).
• Example UHL4. PML magnetic starters have a UHL climatic design with placement category 4 (creation of artificial climatic conditions, closed heated rooms with forced ventilation).
• Example U1. Industrial explosion-proof lamps NSP are manufactured in the U1 climatic design (operational in a moderate macroclimatic region when used in open space). More in this category: "GOST R 52766-2007 Public roads

The tables are given in accordance with GOST 15150-69: Machines, instruments and other technical products designed for various climatic regions. Categories, operating, storage and transportation conditions regarding the impact of climatic factors external environment.

Approved and put into effect by Decree of the USSR State Standard of December 29, 1969 N 1394 (as amended by Amendments No. 1, approved in January 1978, Amendments No. 2, approved in December 1982, Amendments No. 3, approved. in October 1988, Amendments No. 4, approved in September 1999, Amendments published in IUS, No. 3, 2004)

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1. GENERAL PROVISIONS

1.1. This standard shall be used in the design and manufacture of products. In particular, it should be used when drawing up technical specifications for the development or modernization of products, as well as when developing state standards and technical conditions establishing requirements regarding the impact of environmental climatic factors for a group of products, and in the absence of the specified group documents, for individual species products.

1.2. Products must maintain their parameters within the limits established by technical specifications, standards or specifications during the service life and shelf life specified in technical specifications, standards or technical conditions, after and (or) during exposure to climatic factors, the values ​​​​of which are established by this standard.

Products are intended for operation, storage and transportation in the range from the upper to the lower values ​​of these climatic factors, while in addition to the ranges of climatic factors within which the operation of the products is ensured during operation, one or more narrower ranges of climatic factors can be established, within which provide a narrower range of parameter deviations (for example, higher control or measurement accuracy). Within these ranges, multiple values ​​for the same factor may also be specified when establishing requirements for various stages operation or individual technical characteristics, for example, several values ​​of the upper and (or) effective temperature for different resources or service lives.

Where necessary, standards or technical specifications must indicate permissible deviations of parameters from their initial values ​​during operation.

1.3. For specific types or groups of products, the types of influencing climatic factors and their nominal values ​​are established depending on the operating conditions of the products in the relevant technical specifications, standards and technical conditions.

If there are documents that establish for groups of products a connection between the values ​​of the factors specified in this standard and the conditions of use of the products, you should be guided by the instructions of these documents.

1.3 a. It is allowed to operate products in macroclimatic areas and (or) locations different from those for which the products are intended, if climatic factors during operation do not exceed the limits of the nominal values ​​​​established for these products. For example, products of the UHL4 climatic version can be operated in UHL2 conditions during the dry summer period.

It is allowed to operate products in conditions where the values ​​of climatic factors go beyond the established nominal values, if deviations in the service life and (or) other parameters of the products are acceptable. At the same time, the permissibility of operation and its terms, the values ​​of climatic factors, permissible deviations in service life and (or) other parameters of products, as well as (if necessary) Additional requirements for product maintenance are established in the regulatory and technical documentation or agreed with the product supplier.

1.4. In accordance with economic and technical feasibility, it is recommended to manufacture products suitable for use in several areas and (or) locations established by this standard.

1.5. Products may also be intended for use in several macroclimatic regions and (or) locations, or for storage in several conditions alternately for a period of time. different terms; in these cases combinations various conditions operation or storage with periods of stay in these conditions are established in standards or technical specifications for products.

1.2-1.4. (Changed edition, Amendment No. 2).

1.6. Requirements for the effects of environmental climatic factors in standards, technical specifications and other regulatory and technical documentation for products are established in accordance with Appendix 8.

2. CLIMATE VERSIONS AND PRODUCT CATEGORIES

2.1 a. Types of climates and macroclimates and criteria for their delimitation are given in paragraphs. 2.2-2.6 and Appendix 9.

2.1. The products are intended for use in one or more macroclimatic regions, the selection criteria for which are specified in paragraphs. 2.1a-2.6 and Appendix 9, and are manufactured in climatic versions (hereinafter referred to as versions) specified in table. 1.

Several macroclimatic regions can be combined into a group of macroclimatic regions (for example, UHL, T).

Table 1

* In brackets are the designations previously adopted in the technical documentation of some CMEA countries.

** Products in U and UHL versions can be used in warm humid, hot dry and very hot dry climatic regions in accordance with GOST 16350, in which the average annual absolute maximum air temperature is above 40 ° C and (or) a combination of temperatures equal to or above 20 °C, and relative humidity equal to or above 80%, observed for more than 12 hours per day for a continuous period of more than two months a year.

Specific types or groups of exported or other products for a macroclimatic subregion with a warm temperate climate are allowed to be manufactured in the climatic design TU, if the design differences of the products of this design from the climatic design U are technically and economically justified.

*** The specified versions can be designated by the term “tropical version”.

**** If the main purpose of the products is operation in an area with a cold climate and it is not economically feasible to use them outside this area, instead of the UHL designation, the KHL (F) designation is recommended.

2.2. The macroclimatic region with a temperate climate includes areas where the average annual absolute maximum air temperature is equal to or below plus 40 ° C, and the average annual absolute minimum air temperature is equal to or above minus 45 ° C (in accordance with Appendix 9).

It is allowed to distinguish from a macroclimatic region with a temperate climate a macroclimatic subregion with a warm moderate subtype of macroclimate, for which the average annual absolute minimum air temperature is equal to or higher than minus 25 ° C (in accordance with Appendix 9).

(Changed edition, Amendment No. 3, 4).

2.3. A macroclimatic region with a cold climate includes areas in which the average annual absolute minimum air temperature is below minus 45°C (in accordance with Appendix 9).

Boundaries of the macroclimatic region with a cold climate in the territory Russian Federation are given in mandatory Appendix 2. The cold climate area is indicated on the map in Appendix 6.

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

Products placed on mobile units intended for deliveries to the coastal area of ​​the Okhotsk (north of the mouth of the Uda River) and Bering Seas (with the exception of the Kamchatka Peninsula) must be manufactured in the HL design.

The macroclimatic region with an Antarctic cold climate includes areas where the average minimum temperature is below minus 60°C (Central Antarctica).

(Changed edition, Amendment No. 4).

2.4. The macroclimatic region with a humid tropical climate, in accordance with Appendix 9, includes areas for which the values ​​of the combination “average annual relative humidity - average annual temperature” correspond to classification groups 1 and 2 according to features. 1 applications 9.

The macroclimatic region with a dry tropical climate includes areas in which the average annual absolute maximum air temperature is above 40°C and in which the values ​​of the combination “average annual relative humidity-average annual temperature” correspond to classification group 5 according to feature. 1 of Appendix 9, as well as a climatic region with a transitional climate in accordance with Appendix 9. The list of countries classified as areas with a humid and dry tropical climate is given in Appendix 3.

Macroclimatic regions globe are shown on the map in Appendix 6.

(Changed edition, Amendment No. 4).

2.5. The macroclimatic region with a moderately cold marine climate includes seas, oceans and coastal areas within the immediate influence sea ​​water, located north of 30° north latitude or south of 30° south latitude(in accordance with Appendix 9).

(Changed edition, Amendment No. 4).

2.6. The macroclimatic region with a tropical marine climate includes the seas, oceans and coastal areas within the direct influence of sea water, located between 30° north latitude and 30° south latitude (in accordance with Annex 9).

(Changed edition, Amendment No. 4).

2.6a. Characteristics of climate types and macroclimates in terms of air temperature and humidity are given in Appendix 11.

Data on the correspondence between the types of climates and macroclimates according to this standard and the types and groups of climates according to international standards IEC are given in Appendix 12.

(Introduced additionally, Amendment No. 4).

2.7. Products in versions according to clause 2.1, depending on the location when used in air environment at altitudes up to 4300 m (including underground and under water) are manufactured according to product placement categories (hereinafter referred to as product categories) indicated in table. 2.

table 2

For products intended for operation only in a non-air environment and (or) at atmospheric pressure less than 53.3 kPa (400 mm Hg), including at altitudes above 4300 m, the concept of product category is not applied to all stages of operation. If the same product is intended for operation both in the air at altitudes up to 4300 m, and in the non-air environment and (or) at atmospheric pressure less than 53.3 kPa (400 mm Hg), including at altitudes more than 4300 m, then the concept of product category is used only for the stage of operation in the air at altitudes up to 4300 m.

Aircraft, as well as products intended for operation at altitudes of more than 1000 m at reduced atmospheric pressure (including products intended for operation both at altitudes above 1000 m and at altitudes up to 1000 m) are manufactured in groups depending on the reduced atmospheric pressure in accordance with Appendix 7, table. 1.

The product category designation may be used to designate the location of the placement and placement of parts and surfaces of products or structures (for example, an enclosed heated and ventilated room can be designated “location category 4” or “room category 4”).

The combination of design, category and reduced pressure group is called “climatic design type” (for example, climatic design type UHL4 or climatic design type UHL2O4a). In the designation of the type of climatic modification of the product, a designation of the type of atmosphere in which the product is intended is added, if this is specified in the standards or technical specifications for the product.

Climatic conditions (a set of values ​​of climatic factors) standardized in this standard for any specific type of climatic design mean

"conditions............." (for example, conditions UHL4).

type of climate control

For products developed before 07/01/79, it is allowed not to change the previously established designations of climatic versions of products in the following cases:

if the products are scheduled to be discontinued before 07/01/85 and will not be produced as spare parts in the future;

if it is necessary to use existing equipment and accompanying documentation produced by printing, but no later than 07/01/85.

(Changed edition, Amendment No. 4).

2.7a. They do not manufacture products of the types of climatic modifications indicated in the first line of the table. 2a, since these products meet the requirements for products of climatic design types, given respectively in the second line of Table. 2a.

Table 2a

(Introduced additionally, Amendment No. 4).

2.8. IN symbol type (brand) of the product, additionally, after all the designations related to the modification of the product, enter letters and numbers indicating the type of climatic modification of the product. For example, an electric motor of type AO2-21-4 in version T for placement category 2 is designated AO2-21-4T2.

The designation of the type of climate control is indicated in all types of documentation, including operational documentation, as well as on the nameplate (label), which should indicate the type (brand) of the product.

It is allowed not to enter the type of climatic modification into the symbol of the type (brand) of the product in the cases specified in subparagraphs a, b, c. In this case, the type of climate control must be specified in the standards or technical conditions and operational documentation. The designation may not indicate:

b) the type of climatic design of one of the product options, which is usually common for the entire industry or group of products in the industry, if the products are manufactured in several types of climatic design;

For products that do not have a serial number, plates or individual differences (for example, electronic products, electrical installation products), it is allowed to apply symbols or symbol on a non-removable part.

The designation of types of climatic design of products manufactured in accordance with clause 1.4 must include either a combination of design and category that provides the most severe operating conditions, or (if this combination cannot be established) several designs and categories for which the products are intended (combined designation). For example, an electric motor type AO2-21-4, intended for categories 2, 3, 4 of the UHL version (category 2 is the most stringent for this product), designated AO2-21-4UHL2; the same electric motor, designed to operate additionally under conditions of category 5, is designated AO2-21-4UHL2.5 in conditions of category 4, version O-AO2-21-4UHL2O4 (in the last two examples, category 2 is the most stringent for this product in terms of the lower temperature value, category 5 or O4 conditions for air humidity).

For products that meet the requirements of clause 5.2, for those cases where the range of nominal values ​​for any factor is narrower than the range of normal operating values, as well as for products whose operating conditions are established in accordance with clause 1.5, to the designation of the type of climatic modification (or categories) add *.

For products that meet the requirements of clause 5.2, in cases where the range of nominal values ​​for any climatic factor is wider than the range of normal operating values, and narrower ranges of values ​​for other climatic factors are not provided, the sign * is added to the designation of the type of climatic design *. This sign is not added to the designation of groups of products specially designed in accordance with clause 5.2 for use as built-in elements for complete products, where the temperature inside the structure is higher than outside.

If the product consists of several components that do not have a common shell and operate in conditions different categories, the designation of the product category as a whole is taken according to components, performing the main function; the standard or technical specifications for the product may also indicate categories of other components.

In the designation of products that comply with the requirements of clause 5.10, and products intended for operation only in a non-air environment, instead of designating the type of climatic modification, the symbol * is used. For example, AO2-21-4*.

In the designation of products intended for use in water, the symbol * is used instead of the category designation. For example, AO2-21-4OM *.

It is allowed to separate the designation of the climatic version with a line from the main designation of the products if the absence of the line leads to a distortion of the main designation.

It is allowed not to enter designations of types of climatic modifications into the symbol of product types in technical documentation (except for technical conditions and operational documentation) developed before January 1, 1972.

For materials and semi-finished products, the designation of the type of climatic modification or only the climatic modification is established in cases not specified in subparagraph a, while the category designation as part of the designation of the type of climatic modification is allowed to be established in cases where the material is used for the direct manufacture of product parts.

2.7, 2.8. (Changed edition, Amendment No. 2, 4). conditions are established in standards or technical specifications for products.

(Introduced additionally, Amendment No. 2).

3. NORMAL VALUES OF CLIMATIC FACTORS OF THE EXTERNAL ENVIRONMENT DURING OPERATION AND TESTS

3.1. Normal values ​​of environmental climatic factors during product operation are taken equal to the values ​​specified in paragraphs. 3.2-3.14, 3.16. These values ​​apply to the operation of products at altitudes up to 1000 m, unless otherwise stated in the paragraphs of this section.

3.2. Ambient air temperature values ​​are given in table. 3.

Table 3

* For products that, due to operating conditions, may have interruptions in operation at occasionally appearing temperatures below minus 40°C, the lower operating temperature value in technically justified cases can be taken equal to minus 40°C.

To comply with the specifications, the lower operating temperature value is taken to be minus 25°C, the lower limit operating temperature value is minus 30°C.

** For some areas with a subtropical climate, the value is taken to be minus 10°C.

*** For some areas in China, Turkey, Afghanistan, the value is taken to be minus 20°C.

**** For ships not used in areas of the Arctic Ocean in winter, the lower operating temperature value is taken to be minus 30°C.

***** For operation in a non-operating state (for operational storage and transportation), the value is taken the same as for category 3, and for the type of climatic version B4 - as for the type of modification OM3.

****** For execution T.

******* For vehicle execution.

******** For some points in Central Sahara the temperature is taken to be 55°C. It is allowed to set the temperature to 45°C for products developed before 07/01/89 and not supplied to the regions of Iraq, the countries of the Arabian Peninsula, Southern Iran and Central Sahara.

1. for outdoor use (exposure to a combination of climatic factors characteristic of a given climatic region).

2. for operation under a canopy or in rooms (volumes) where fluctuations (and air humidity) do not differ significantly from fluctuations in the open air and there is relatively free access to outside air, for example in tents, bodies, trailers, metal rooms without thermal insulation, as well as in shells of a complete product of category 1 (no direct exposure to solar radiation and precipitation).

3. For use in enclosed spaces (volumes) with natural ventilation without artificially controlled climatic conditions, where fluctuations (and air humidity and exposure to sand and dust are significantly less than in the open air, for example in metal with thermal insulation, stone, concrete, wooden rooms (no exposure to precipitation, direct solar radiation; significant reduction in wind; significant reduction or absence of exposure to diffuse solar radiation and moisture condensation).

4. For use in rooms (volumes) with artificially controlled climatic conditions, for example, in closed heated or cooled and ventilated production facilities, etc., including well-ventilated underground rooms (no exposure to direct solar radiation, precipitation, wind, sand and dust outside air; absence or significant reduction of exposure to diffuse solar radiation and moisture condensation.

5. For operation in rooms (volumes) with high humidity (for example, in unheated and unventilated underground rooms, including in mines, basements, in the soil, in such ship, ship and other rooms in which long-term presence of water or frequent condensation of moisture on the walls and ceiling, in particular in some holds, some workshops of textile, hydrometallurgical production, etc.).

Table 1. Characteristics of climates of climatic regions

Table 3. Climatic versions of electrical products