Climatic version s1. Description of the most common climatic versions of luminaires: UHL1, U1, UHL2, U2, UHL3, U3, UHL4, U4. Maximum operating temperature for UHL4

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.

Table 1 - Climatic version of products

The climate of the macroclimatic region	Letter designation
	Russians	latin
Products intended for operation on land, rivers, lakes
Temperate climate (1)	At	(N)
Temperate and cold climate (1)	UHL (2)	(NF)
cold climate	HL	(F)
Humid tropical climate (2)	TV	(TH)
Dry tropical climate (2)	TS	(TA)
Dry and humid tropical climate (2)	T	(T)
All macroclimatic areas on land, except for areas with a very cold climate (general climate version)	O	(U)
Products intended for operation in macroclimatic regions with maritime climate
temperate maritime climate	M	(M)
Tropical maritime climate	TM	(MT)
Cold temperate and tropical maritime climate	OM	(MU)
All macroclimatic areas on land and sea, except for areas with a very cold climate (all-climatic version)	AT	(W)

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

Table 2 - Enlarged categories of product placement

Product operating conditions	Influencing factors	Designation
Outdoors	The totality of all climatic factors in a given area	1
Under a canopy or in rooms where fluctuations in temperature and humidity do not differ significantly from fluctuations in the open air and there is relatively free access to outside air, as well as in the shell of a complete product of category 1	No direct exposure to solar radiation and precipitation	2
In enclosed spaces with natural ventilation without artificially controlled climatic conditions, where temperature and humidity fluctuations, as well as exposure to sand and dust are significantly less than outdoors	No exposure to precipitation, direct solar radiation; a significant decrease in wind; significant reduction or absence of exposure to diffuse solar radiation and moisture condensation	3
In rooms with artificially controlled climatic conditions, for example, in closed heated (cooled) and ventilated, including underground, rooms	No exposure to direct solar radiation, precipitation, wind, sand and dust from the outside air; no or significant reduction in exposure to diffuse solar radiation and moisture condensation	4
In rooms with high humidity (for example, in unheated and unventilated underground rooms where there may be a long presence of water or partial condensation on walls and ceilings)	No exposure to direct solar radiation, precipitation, wind, sand and dust from the outside air; no or significant reduction in exposure to diffuse solar radiation; Exposure to water or partial moisture condensation	5

Table 3 - Additional product placement categories

Operating (storage) conditions of the product	Designation
For storage during operation in rooms of category 4 and work both in conditions of category 4 and (for a short time) in others, including outdoors	1.1
For operation as built-in elements inside complete products of categories 1, 1.1 and 2, the design of which excludes the possibility of moisture condensation on built-in elements (for example, inside radio-electronic equipment)	2.1
For operation in irregularly heated rooms	3.1
For use in air-conditioned or partially air-conditioned rooms	4.1
For operation in laboratory capital residential and other similar premises	4.2
For operation as built-in elements inside complete products of categories 5, the design of which excludes the possibility of moisture condensation on built-in elements (for example, inside radio-electronic equipment)	5.1

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) .

Table 4 - The value of the ambient air temperature during operation

Climatic performance	Performance category	Temperature value, o C
		Working range	Limit range
U, TU	1; 1.1; 2; 2.1; 3	+40 / -45 (1)	+45 / -50 (1)
	3.1	+40 / -10 (5)	+45 / -10 (5)
	5; 5.1	+35 / -5	+35 / -5
HL	1; 1.1; 2; 2.1; 3	+40 / -60	+45 / -70
	3.1	+40 / -10 (5)	+45 / -10 (5)
	5; 5.1	+35 / -10	+35 / -10
UHL	1; 1.1; 2; 2.1; 3	+40 / -60	+45 / -70
	3.1	+40 / -10 (5)	+45 / -10 (5)
	4	+35 / +1	+40 / +1
	4.1	+25 / +10	+40 / +1
	4.2	+35 / +10	+40 / +1
	5; 5.1	+35 / -10	+35 / -10
TV	1; 1.1; 2; 2.1; 3; 3.1	+40 / +1	+45 / +1 (2)
	4	+40 / +1	+45 / +1
	4.1	+25 / +10	+40 / +1
	4.2	+45 / +10	+45 / +10
	5; 5.1	+35 / +1	+35 / +1
T, TS	1; 1.1; 2; 2.1 (6) ; 3; 3.1	+50 (8) / -10	+60 / -10 (3)
	4 (7)	+45 / +1	+55 / +1
	4.1 (7)	+25 / +10	+40 / +1
	4.2 (7)	+45 / +10	+45 / +10
	5; 5.1	+35 / +1	+35 / +1
O	1; 1.1; 2; 2.1	+50 (8) / -60	+60 / -70
	4	+45 / +1	+55 / +1
	4.1	+25 / +10	+40 / +1
	4.2	+45 / +10	+45 / +1
	5; 5.1	+35 / -10	+35 / -10
M	1; 1.1; 2; 2.1; 3; 5; 5.1	+40 / -40 (4)	+45 / -40
	4; 3.1	+40 / -10 (5)	+40 / -10 (5)
	4.1	+35 / +15	+40 / +1
	4.2	+40 / +1	+40 / +1
TM	1; 1.1; 2; 2.1; 3; 5; 5.1	+45 / +1	+45 / +1
	4; 3.1	+45 / +1	+45 / +1
	4.1	+25 / +10	+40 / +1
	4.2	+45 / +1	+45 / +1
OM	1; 1.1; 2; 2.1; 3; 5; 5.1	+45 / -40 (4)	+45 / -40
	4; 3.1	+45 / -10 (5)	+45 / -10 (5)
	4.1	+35 / +15	+40 / +1
	4.2	+40 / +1	+40 / +1
AT	1; 1.1; 2; 2.1; 3	+50 (8) / -60	+60 / -70
	3.1	+50 (8) / -10 (5)	+60 / -10 (5)
	4	+45 / -10 (5)	+55 / -10 (5)
	4.1	+25 / +10	+40 / +1
	4.2	+45 / +1	+45 / +1
	5; 5.1	+45 / -40	+45 / -40

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 the Arctic Ocean in winter, the lower operating temperature is -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 .

Table 7 - Cooling water temperature

Product cooling method		Working value of cooling water temperature, o C
Cooling through a flow system from water supply networks, wells, large reservoirs	U, TU, UHL (HL)	+25 / +1
	M	+25 / -2
	T, TS, TV, O	+40 / +1
	TM	+30 (1) / +10
	OM	+30 (1) / -2 (2)
	AT	+40 / -2 (2)
Cooling through a circulating system using artificial ponds, cooling towers and other artificial structures	U, TU, UHL (HL)	+30 (3) / +1
	T, TS, TV, O	+40 / +1

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.

Table 9 - Operating values ​​for air humidity

Climatic version of the product	Product category	Relative Humidity		Absolute humidity, average annual value, g∙m -3
		Average annual value	Upper value (1)
UHL	4; 4.1; 4.2	60% at +25 o C	80% at +25 o C	10
U, UHL (HL (5)), TU	1; 2	75% at +15 o C	100% at +25 o C	11
	1.1	70% at +15 o C	98% at +25 o C	10
	2.1; 3; 3.1	75% at +15 o C	98% at +25 o C	11
	5 (3)	90% at +15 o C	100% at +25 o C	13
	5.1	90% at +15 o C	98% at +25 o C	13
TS	1; 2	40% at +27 o C	100% at +25 o C	10
	1.1; 3; 3.1
	4; 4.1; 4.2	40% at +27 o C	80% at +25 o C	10
	5	90% at +15 o C	100% at +25 o C	13
	5.1	90% at 15°C	80% at 25°C	13
TV, T, O, V, TM (6) , OM (2)	1; 2; 5	80% at +27 o C	100% at +35 (4) o C	20
	1.1	75% at +27 o C	98% at +35 o C	17
	2.1; 5.1	80% at +27 o C	98% at +35 o C	20
TV, T, V, TM, OM (2)	3	75% at +27 o C	98% at +35 o C	17
	3.1	75% at +27 o C	98% at +35 o C	17
TV, O, V, TM, OM (2)	4	75% at +27 o C	98% at +35 (4) o C	17
	4.1	60% at +20 o C	80% at +25 o C	10
	4.2	75% at +27 o C	98% at +35 o C	17
M	1; 2	80% at +22 o C	100% at +25 o C	15
	1.1	75% at +22 o C	98% at +25 o C	11
	2.1	80% at +22 o C	98% at +25 o C	15
	3; 4; 3.1	75% at +22 o C	98% at +25 o C	11
	4.1	60% at +20 o C	80% at +25 o C	10
	4.2	75% at +22 o C	98% at +25 o C	11
	5	80% at +22 o C	100% at +25 o C	15
	5.1	80% at +22 o C	98% at +25 o C	15

Notes:

1. The upper value of relative humidity indicated in the table is also standardized at lower temperatures; at higher temperatures the 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 the 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 of category 5, which are not built-in elements of 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.

Table 11 - Content of corrosive agents in the outdoor atmosphere

Atmosphere type		Content of corrosive agents
Designation	Name
I	Conditionally net	(no more than 0.025 mg / m 3);
II	Industrial	(from 0.025 to 0.31 mg / m 3); chlorides - less than 0.3 mg / (m 2 × day)
III	Maritime	Sulfur dioxide not more than 20 mg / (m 2 × day) (no more than 0.025 mg / m 3); chlorides - from 30 to 300 mg / (m 2 × day)
IV	Primorsko-industrial	Sulfur dioxide from 20 to 250 mg / (m 2 × day) (from 0.025 to 0.31 mg / m 3); chlorides - from 0.3 to 30 mg / (m 2 × day);

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.

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 movable 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 effects are not imposed on parts and assemblies intended for placement in complete products with dust tight shells.

The 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 performance 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, requirements are imposed on products of category 1.1 if this is indicated in the terms of reference. Requirements may not apply to the product as a whole, but only to 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

Requirements for corrosion resistance when exposed to salt fog are imposed on products of M, TM, OM, B categories 1 and 2, as well as products of categories 1 and 2 of other designs intended for operation on the coasts. Methods for assessing corrosion resistance and permissible changes in the appearance of products are established 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 UHL (HL), M, OM, O, B versions 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.

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

Other requirements

If products are intended for operation in special environmental conditions (for example, the atmosphere of aggressive gases of chemical production 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 product groups, 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.

Published: December 06, 2017 Views: 5.4k

Devices and various technical products are characterized by climatic design and placement category. In this article, we consider in detail the climatic version UHL.

You can download GOST 15150-69.

Deciphering the climatic version UHL:

• At— temperate climatic region;
• HL- cold climatic region.

Thus, the following conclusion can be drawn.

UHL- temperate and cold climate
Temperature from -60 С° to +40 С°

Expert opinion

Editor-in-chief of LinijaOpory

Pay attention to the similarities and differences in the climatic design depending on the category of accommodation.

UHL1 - accommodation category 1

Operating temperature for UHL1:

• minimum - minus 60 С °;
• maximum - plus 40 ° C.

Maximum operating temperature for UHL1:

• minimum - minus 70 С °;
• maximum - plus 45 С °.

Relative humidity for UHL1:

UHL2 - accommodation category 2

Operating temperature for UHL2:

• minimum - minus 60 С °;
• maximum - plus 40 ° C.

Maximum operating temperature for UHL2:

• minimum - minus 70 С °;
• maximum - plus 45 С °.

Relative humidity for UHL2:

• average annual — 75% at 15 С°;
• maximum - 100% at 25 C °.

UHL3 - accommodation category 3

Accommodation category 3 provides operation in indoor premises without temperature control with natural ventilation (the temperature practically does not differ from outdoor temperature, there are no splashes and jets of water, a small amount of dust).

Working temperature for UHL3:

• minimum - minus 60 С °;
• maximum - plus 40 ° C.

Maximum operating temperature for UHL3:

• minimum - minus 70 С °;
• maximum - plus 45 С °.

Relative humidity for UHL3:

• average annual — 75% at 15 С°;
• maximum - 98% at 25 ° C.

UHL4 - accommodation category 4

Accommodation category 4 provides operation in indoor areas with heating and artificial ventilation (temperature control, no low temperatures, low dust concentration).

Operating temperature for UHL4:

• minimum - plus 1 С °;
• maximum - plus 35 С °.

Maximum operating temperature for UHL4:

• minimum - plus 1 С °;
• maximum - plus 40 ° C.

Relative humidity for UHL4:

• average annual — 60% at 20 С°;
• maximum - 80% at 25 C °.

UHL5 - accommodation category 5

Working temperature for UHL5:

• minimum - minus 10 С °;
• maximum - plus 35 С °.

Maximum operating temperature for UHL5:

• minimum - minus 10 С °;
• maximum - plus 40 ° C.

Relative humidity for UHL5:

• average annual — 90% at 15 С°;
• maximum - 100% at 25 C °.

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Table. Standards for climatic modifications according to GOST. Marking and designation of climatic modifications GOST 15150-69.

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. 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).

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 ° С);
• OM - general climatic marine version (+45 / -40 ° С);
• B - all climatic modifications (+50/-60 о С).

Designation example: Butterfly valve ZP 200-16 UHL 1. This means that the rotary valve with a nominal diameter of 200 mm and a working pressure of 16 bar can be 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 technical 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 values ​​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 that establish a relationship between the values ​​of factors for product groups, 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 that differ from those for which the products are intended, if 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 product.
9. A macroclimatic region with a temperate climate UHL (category of climatic modification UHL) includes areas where the average annual absolute maximum air temperature is equal to or lower than plus 40°С, and the average annual absolute minimum air temperature is equal to or higher than minus 45°С.
10. It is allowed to single out a macroclimatic subregion with a warm temperate subtype of macroclimate 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°C. 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 the macroclimatic region with a cold climate on the territory of the Russian Federation.
Federation. Products placed on mobile installations intended for deliveries 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.

Table: temperature values ​​​​according to the climatic version. Marking and designation of climatic modifications GOST 15150-69.

Product execution	Product category	Air temperature value during operation, °C
		Working		Limit working
		top	bottom	top	bottom
U, TU	1; 1.1; 2; 2.1; 3	+40	-45	+45	-50
	3.1	+40	-10	+45	-10
	5; 5.1	+35	-5	+35	-5
HL	1; 1.1; 2; 2.1; 3	+40	-60	+45	-70
	3.1	+40	-10	+45	-10
	5; 5.1	+35	-10	+35	-10
UHL	1; 1.1; 2; 2.1; 3	+40	-60	+45	-70
	3.1	+40	-10	+45	-10
	4	+35	+1	+40	+1
	4.1	+25	+10	+40	+1
	4.2	+35	+10	+40	+1
	5; 5.1	+35	-10	+35	-10
TV	1; 1.1; 2; 2.1; 3; 3.1	+40	+1	+45	+1
	4	+40	+1	+45	+1
	4.1	+25	+10	+40	+1
	4.2	+45	+10	+45	+10
	5; 5.1	+35	+1	+35	+1
T, TS	1; 1.1; 2; 2.1; 3; 3.1	+50	-10	+60	-10
	4	+45	+1	+55	+1
	4.1	+25	+10	+40	+1
	4.2	+45	+10	+45	+10
	5; 5.1	+35	+1	+35	+1
O	1; 1.1; 2; 2.1	+50	-60	+60	-70
	4	+45	+1	+55	+1
	4.1	+25	+10	+40	+1
	4.2	+45	+10	+45	+1
	5; 5.1	+35	-10	+35	-10
M	1; 1.1; 2; 2.1; 3; 5; 5.1	+40	-40	+45	-40
	4; 3.1	+40	-10	+40	-10
	4.1	+35	+15	+40	+1
	4.2	+40	+1	+40	+1
TM	1; 1.1; 2; 2.1; 3; 5; 5.1	+45	+1	+45	+1
	4	+45	+1	+45	+1
	4.1	+25	+10	+40	+1
	4.2	+45	+1	+45	+1
OM	1; 1.1; 2; 2.1; 3; 5; 5.1	+45	-40	+45	-40
	4; 3.1	+45	-10	+45	-10
	4.1	+35	+15	+40	+1
	4.2	+40	+1	+40	+1
AT	1; 1.1; 2; 2.1; 3	+50	-60	+60	-70
	3.1	+50	-10	+60	-10
	4	+45	-10	+55	-10
	4.1	+25	+10	+40	+1
	4.2	+45	+1	+45	+1
	5; 5.1	+45	-40	+45	-40