SIST ETS 300 019-1-3 E1:2006

• Abstract:

  The purpose of this sub-part is to define the classes of environmental conditions and their severities to which equipment may be exposed at specified locations. The severities specified are those which will have a low probability of being exceeded; generally less than 1 %. This sub-part applies to equipment installed for stationary use at weatherprotected locations during: ; - normal operation;; - exchange or installation construction;; - repair and maintenance.

• Status: Published
• Publication Date: 31-Jan-2006
• Withdrawal Date: 30-Sep-2003
• ICS: 19.040 - Environmental testing
• ICS: 33.050.01 - Telecommunication terminal equipment in general
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-2006
• Due Date: 01-Feb-2006
• Completion Date: 01-Feb-2006
• Ref Project: ETSI ETS 300 019-1-3 ed.1 (1992-02) - Equipment Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1-3: Classification of environmental conditions; Stationary use at weatherprotected locations

SIST ETS 300 019-1-3 E1:2006 is the Slovenian adoption of ETSI ETS 300 019-1-3 Edition 1. It classifies the environmental conditions and severities for telecommunications equipment used at stationary, weatherprotected locations, so engineers can match equipment design and test planning to the expected site exposure. The document covers normal operation, exchange or installation construction, and repair and maintenance at those locations.

What does SIST ETS 300 019-1-3 E1:2006 specify?

SIST ETS 300 019-1-3 E1:2006 specifies standardised environmental classes for equipment at stationary, weatherprotected locations. It sets out the conditions that equipment may meet in service and during handling at the site, using severities that are expected to be exceeded only rarely.

The standard is organised into a foreword, scope, normative references, definitions, environmental classes, environmental conditions, and history. Clause 4 defines the location classes, and Clause 5 turns those classes into climate, biological, chemical, mechanical, and vibration conditions. Tables 1 to 5 and Figures 1 to 6 provide the detailed class data and climatograms.

Clause	Class or topic	What it covers
4.1	Class 3.1	Temperature-controlled enclosed locations
4.2	Class 3.2	Partly temperature-controlled enclosed locations
4.3	Class 3.3	Not temperature-controlled weatherprotected locations
4.4	Class 3.4	Sites with heat-trap
4.5	Class 3.5	Sheltered locations

What are the key requirements of SIST ETS 300 019-1-3 E1:2006?

SIST ETS 300 019-1-3 E1:2006 gives the environmental profile to use when specifying telecom equipment for this type of site. The practical job is to pick the class that matches the location, then design and test equipment against the climatic, biological, chemical, and mechanical exposure listed for that class.

Site classes in Clause 4

Clause 4 defines five location classes, from Class 3.1 through Class 3.5. The classes move from controlled indoor spaces to harsher sheltered sites, and the main question is how much temperature control, humidity control, and direct weather influence the site has.

Class 3.1 covers permanently temperature-controlled enclosed locations such as offices, telecommunication centres, shops, and workshop areas. Class 3.2 covers enclosed locations with no temperature or humidity control, while Class 3.3 covers weatherprotected locations that may have openings to open air. Class 3.4 adds heat-trap conditions, and Class 3.5 covers sheltered locations without direct solar radiation or heat-trap effects.

Climatic conditions in Table 1

Table 1 gives the climate parameters for Classes 3.1 to 3.5. It covers low and high air temperature, relative humidity, absolute humidity, rate of temperature change, air pressure, solar radiation, heat radiation, movement of surrounding air, condensation, wind-driven rain or snow, water from sources other than rain, and icing.

In practice, Table 1 is the main sizing guide for enclosures, ventilation, heating, cooling, sealing, and component choice. A designer can use it to decide whether the equipment needs protection against condensation, solar loading, rapid temperature swings, or icing at the intended site.

Biological and chemical exposure in Tables 2, 3a, and 3b

Table 2 sets the biological conditions. Class 3.1 assumes no flora or fauna exposure, while Classes 3.2 to 3.5 allow mould, fungus, rodents, and other animals harmful to products, excluding termites. That matters for materials, coatings, enclosure gaps, and contamination control.

Tables 3a and 3b define chemically active substances such as salt mist, sulfur dioxide, hydrogen sulphide, chlorine, hydrochloric acid, hydrofluoric acid, ammonia, ozone, and nitrogen oxides. The tables distinguish mean values from maximum values, and the maximum values are short peaks of not more than 30 minutes per day. The special classes 3C1 and 3C3 support more demanding chemical exposure, which is useful when the site is near coastal, offshore, or industrial emission sources.

Mechanically active substances in Table 4

Table 4 covers sand, dust in suspension, and dust sedimentation. The levels are higher for Classes 3.2 to 3.5 than for Class 3.1, so the table is the basis for filtration, sealing, cleaning strategy, and contamination tolerance.

A note in Table 4 says that where approved cleaning methods are used, such as in unheated telecommunication centres, the Class 3.1 levels apply. In practice, that lets a site rely on maintenance controls rather than harsher dust assumptions.

Mechanical conditions in Table 5 and Figure 6

Table 5 defines stationary vibration and non-stationary vibration, including shock. It gives the vibration amplitudes and frequency ranges for the different class groupings, and it separates the lower levels used for Classes 3.1, 3.2, and 3.3 from the higher levels used for Classes 3.4 and 3.5.

Figure 6 provides the shock response spectra used for the non-stationary vibration cases, including Spectrum type L and Spectrum type II. For users, this is the part of the standard that supports mechanical ruggedness checks, installation-site evaluation, and test specification.

What terms does SIST ETS 300 019-1-3 E1:2006 define?

SIST ETS 300 019-1-3 E1:2006 defines the terms that set the boundary between indoor, sheltered, and weatherexposed use. The definitions matter because the selected class depends on how the site behaves, not just on where it is located.

• Stationary use - Equipment is mounted firmly or permanently placed at one site, and short handling periods during erection, maintenance, or repair are still included.
• Weatherprotected location - A place where the product is protected from weather, either totally or partly.
• Totally weatherprotected location - A location where direct weather influences are totally excluded.
• Partly weatherprotected location - A location where direct weather influences are not completely excluded.
• Climate-controlling system - A system that controls or influences climate by acting on at least one climatic parameter in one direction.
• Heating system - A system that raises air temperature only and can reduce relative humidity.
• Air conditioning system - A system that automatically controls air temperature and humidity by heating, cooling, humidifying, and dehumidifying.

Who uses SIST ETS 300 019-1-3 E1:2006?

SIST ETS 300 019-1-3 E1:2006 is used by telecom equipment designers, environmental test engineers, quality managers, and buyers who need to agree the expected site conditions before equipment is specified or accepted. It is also useful for operators of telecommunication centres and other stationary installations that need to describe indoor or sheltered exposure clearly.

In practice, these users apply the standard when selecting an environmental class for a site, defining design margins, planning environmental tests, and documenting procurement or acceptance conditions. It is especially relevant when the installation may face condensation, dust, vibration, salt mist, or heat-trap effects.

What changed in SIST ETS 300 019-1-3 E1:2006 from the previous edition?

SIST ETS 300 019-1-3 E1:2006 is identified as ETS 300 019-1-3 Edition 1. The history records it as the first edition and notes a later PDF conversion.

Which standards are used with SIST ETS 300 019-1-3 E1:2006?

SIST ETS 300 019-1-3 E1:2006 cites four normative references that support its definitions and class structure.

• ETR 035 - Provides environmental engineering guidance and terminology.
• IEC 721-3-0 - Gives the introduction to the IEC environmental classification system.
• IEC 721-3-3 - Provides the stationary-use-at-weatherprotected-locations class framework that the classes in this standard are based on.
• IEC 68-2-27 - Defines Test Ea: Shock, which supports the shock-response terminology used with Figure 6.

What does the SIST ETS 300 019-1-3 E1:2006 document contain?

SIST ETS 300 019-1-3 E1:2006 contains five class descriptions, five environmental-condition tables, and six figures. The figures are climatograms for Classes 3.1 to 3.5, plus the shock response spectra in Figure 6.

The tables are the most practical part of the document for design and testing. Table 1 covers climate, Table 2 biological exposure, Tables 3a and 3b chemically active substances, Table 4 mechanically active substances, and Table 5 mechanical conditions.

For users, that means the standard supports site classification, product design, environmental test planning, and specification writing. It gives a common vocabulary for describing what a stationary telecom installation at a weatherprotected location is expected to face.

SLOVENSKI STANDARD
01-februar-2006
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Equipment Engineering (EE); Environmental conditions and environmental tests for
telecommunications equipment; Part 1-3: Classification of environmental conditions;
Stationary use at weatherprotected locations
Ta slovenski standard je istoveten z: ETS 300 019-1-3 Edition 1
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
33.050.01 Telekomunikacijska Telecommunication terminal
terminalska oprema na equipment in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 019-1-3
TELECOMMUNICATION February 1992
STANDARD
Source:ETSI TC-EE Reference:DE/EE-1019-1-3
ICS: 33.080
Environment, test, equipment
Key words:
Equipment Engineering (EE);
Environmental conditions and environmental tests for
telecommunications equipment
Part 1-3: Classification of environmental conditions
Stationary use at weatherprotected locations
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - [e-mail]
X.400: Internet:
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1992. All rights reserved.
New presentation - see History box

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ETS 300 019-1-3: February 1992
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 019-1-3: February 1992
Contents
Foreword.5
1 Scope .7
2 Normative references .7
3 Definitions. 7
4 Environmental classes .8
4.1 Class 3.1: Temperature-controlled locations.8
4.2 Class 3.2: Partly temperature-controlled locations .9
4.3 Class 3.3: Not temperature-controlled locations. 11
4.4 Class 3.4: Sites with heat-trap . 13
4.5 Class 3.5: Sheltered locations. 14
5 Environmental conditions. 17
5.1 Climatic conditions. 17
5.2 Biological conditions . 18
5.3 Chemically active substances. 18
5.4 Mechanically active substances. 20
5.5 Mechanical conditions. 20
History. 22

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ETS 300 019-1-3: February 1992
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ETS 300 019-1-3: February 1992
Foreword
This multi-part European Telecommunication Standard (ETS) has been produced by the Equipment
Engineering (EE) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This standard is concerned with environmental conditions and environmental tests for telecommunications
equipment and comprises two main parts, each with subdivisions:
- ETS 300 019-1: "Classification of environmental conditions".
This part of the standard, Part 1, specifies different standardised environmental classes covering
climatic and biological conditions, chemically and mechanically active substances and mechanical
conditions during storage, transportation and in use.
- ETS 300 019-2: "Specification of environmental tests".
This part of the standard will specify the test requirements for the different environmental classes.
Each part of the standard is divided into sub-parts. Sub-part 1-0 will form a general overview of Part 1.
This sub-part, Sub-part 1-3, deals with stationary use at weatherprotected locations.
This part of the standard, (Part 1) was submitted to Public Enquiry as prETS 300 019 Part B. The original
Part A is to be published as ETSI Technical Report ETR 035 entitled: "Equipment Engineering (EE);
Environmental engineering Guidance and terminology".

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ETS 300 019-1-3: February 1992
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ETS 300 019-1-3: February 1992
1 Scope
The purpose of this sub-part is to define the classes of environmental conditions and their severities to
which equipment may be exposed at specified locations. The severities specified are those which will have
a low probability of being exceeded; generally less than 1 %.
This sub-part applies to equipment installed for stationary use at weatherprotected locations during:
- normal operation;
- exchange or installation construction;
- repair and maintenance.
2 Normative references
This ETS contains, by dated or undated reference, provisions from other publications. These normative
references are cited at the appropriate places in the text and the publications listed hereafter. For dated
references, subsequent amendments to, or revisions of any of these publications apply to this ETS only
when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies.
[1] ETR 035: "Equipment Engineering (EE); Environmental engineering Guidance
and terminology".
[2] IEC Publication 721-3-0 : "Introduction".
[3] IEC Publication 721-3-3 : "Stationary use at weatherprotected locations".
[4] IEC Publication 68-2-27 : "Test Ea: Shock".
3 Definitions
Stationary use: The equipment is mounted firmly on the structure, or on mounting devices, or it is
permanently placed at a certain site. It is not intended for portable use - but short periods of handling
during erection work, down time, maintenance and repair at the location are included.
Weatherprotected location: A location at which the product is protected from weather.
- Totally weatherprotected location (enclosed location):
direct weather influences are totally excluded,
- partly weatherprotected location (sheltered location):
direct weather influences are not completely excluded.
Climate-controlling system: A system that controls or influences climate, acting at least on one climatic
parameter in one direction.
Heating system: A system that controls or influences climate by increasing the air temperature only. This
can decrease the relative humidity.
Cooling system: A system that controls or influences climate by decreasing the air temperature only. This
can decrease the absolute humidity.
Forced ventilation system: A system that controls or influences climate by introducing outdoor air into
the room or expelling air out of the room.
Air conditioning system: A system that fully and automatically controls the climatic parameters air
temperature and humidity by heating, cooling, humidifying and dehumidifying.

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ETS 300 019-1-3: February 1992
Relative humidity: The ratio of the partial pressure of the water vapour in moist air at a given
temperature t, to the partial pressure of the water vapour in saturated air at the same temperature t.
Absolute humidity: The mass of water vapour in grammes which is associated with one cubic metre of
dry air in an air/water vapour mixture.
4 Environmental classes
The classes shown in parentheses, e.g. (3C1), may be selected for special applications.
4.1 Class 3.1: Temperature-controlled locations
This class is a combination of classes 3K3/3Z2/3Z4/3B1/3C2(3C1)/3S2/3M1 in IEC standard 721-3-3 [3].
This class applies to a permanently temperature controlled enclosed location. Humidity is usually not
controlled. The climatogram is shown in figure 1.
Heating, cooling, forced ventilation and humidification are used as necessary to maintain the required
conditions - especially where there is a significant difference between the room environment and the
external ambient. The climate-controlling systems could be periodically switched on or off but extremely
high or low temperatures are prevented.
This class applies to locations:
- where installed equipment may be exposed to solar radiation and to heat radiation. It may also be
exposed to movements of the surrounding air due to draughts in buildings. They are not subjected to
condensed water, precipitation, water from sources other than rain or icing;
- without particular risks of biological attacks. This includes protective measures, e.g. special product
design, or installations at locations of such construction that mould growth and attacks by animals,
etc. are not probable;
- with normal levels of contaminants experienced in urban areas with industrial activities scattered
over the whole area and/or with heavy traffic;
- without special precautions to minimise the presence of sand or dust, but which are not situated in
proximity to sources of sand or dust;
- with insignificant vibration and shock.
The conditions of this class may be found in:
- normal living or working areas, e.g. living rooms, rooms for general use (theatres, restaurants);
- offices;
- shops;
- workshops for electronic assemblies and other electrotechnical products;
- telecommunication centres;
- storage rooms for valuable and sensitive products.

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ETS 300 019-1-3: February 1992
NOTE: Exceptional conditions may occur following the failure of the temperature controlling
system.
Figure 1: Climatogram for Class 3.1: Temperature-controlled locations
4.2 Class 3.2: Partly temperature-controlled locations
This class is a combination of classes 3K5/3Z2/3Z4/3B2/3C2(3C1)/3S3/3M2 in IEC standard 721-3-3 [3].
This class applies to an enclosed location having neither temperature nor humidity control. The
climatogram is shown in figure 2.
Heating may be used to raise low temperatures especially where there is a significant difference between
the conditions of this class and the open-air climate. Building construction is designed to avoid extremely
high temperatures.
This class applies to locations:
- where installed equipment may be exposed to solar radiation and heat radiation. They may also be
exposed to movements of the surrounding air due to draughts in buildings, e.g. through open
windows. They may be subjected to condensed water and to water from sources other than rain
and icing. They are not subjected to precipitation;

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ETS 300 019-1-3: February 1992
- where mould growth or attacks by animals, except termites, may occur;
- with normal levels of contaminants experienced in urban areas with industrial activities scattered
over the whole area and/or with heavy traffic;
- in close proximity to sources of sand or dust;
- with vibration of low significance, e.g. for products fastened to light supporting structures subjected
to negligible vibrations.
The conditions of this class may be found in:
- entrances and staircases of buildings;
- garages;
- cellars;
- certain workshops;
- buildings in factories and industrial process plants;
- unattended equipment stations;
- certain telecommunication buildings;
- ordinary storage rooms for frost resistant products and farm buildings, etc.
NOTE: Underground spaces, manholes, etc.: Class 3.2 can be used in these locations although
the distribution and duration of severities are different. The relative humidity exceeds
95 % RH for more than 1 % of the time and may reach 100 % RH. This may become a
separate class in the future.
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ETS 300 019-1-3: February 1992
Figure 2: Climatogram for class 3.2: Partly temperature-controlled locations
4.3 Class 3.3: Not temperature-controlled locations
This class is a combination of classes 3K6/3Z2/3Z4/3Z7/3B2/3C2(3C1)/3S3/3M2 in IEC Publication
721-3-3 [3].
This class applies to a weatherprotected location having neither temperature nor humidity control. The
location may have openings directly to the open air, i.e. may be only partially-weather protected. The
climatogram is shown in figure 3.
The climatic conditions of this class may be affected to a varying extent by the conditions of the open-air
climate and the construction of the building.
This class applies to locations:
- where installed equipment may be exposed to solar radiation and temporarily to heat radiation. It
may also be exposed to movements of the surrounding air due to draughts e.g. through doors,
windows or other openings. It may be subjected to condensed water, to water from sources other
than rain and to icing. It may temporarily be subjected to limited wind-driven precipitation, including
snow;
- where mould growth, or attacks by animals, except termites, may occur;
- with normal levels of contaminants experienced in urban areas with industrial activities scattered
over the whole area and/or with heavy traffic;

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ETS 300 019-1-3: February 1992
- in close proximity to sources of sand or dust;
- with vibration of low significance, e.g. for products fastened to light supporting structures subjected
to negligible vibrations.
The conditions of this class may be found in:
- some entrances to buildings;
- some garages;
- some shacks;
- unattended buildings, etc.
Figure 3: Climatogram for class 3.3: Not temperature controlled locations

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ETS 300 019-1-3: February 1992
4.4 Class 3.4: Sites with heat-trap
This class is a combination of classes 3K7/3Z2/3Z4/3Z7/3Z8/3B2/3C2(3C3)/3S3/3M5 in IEC Publication
721-3-3 [3].
This class applies to a weather protected location having neither temperature nor humidity control. The
location may have openings directly to the open air, i.e. may be only partially weather protected. The
effect of direct solar radiation and heat trap conditions exist. The climatogram is shown in figure 4.
This class applies to locations:
- where installed equipment may also be exposed temporarily to solar radiation and temporarily to
heat radiation. They may be exposed to movements of the surrounding air due to draughts e.g.
through doors, windows or other openings. They may be subjected to condensed water and to
water from sources other than rain and to icing. They may be subjected to limited wind-driven
precipitation including snow;
- where mould growth, or attacks by animals, except termites, may occur;
- with normal levels of contaminants experienced in urban areas with industrial activities scattered
over the whole area and/or with heavy traffic;
NOTE: At locations in the immediate neighbourhood of industrial sources with chemical
emissions either special precautions must be taken or the special chemical class must
be chosen.
- in close proximity to sources of sand or dust;
- where transmitted vibrations are experienced from machines or passing vehicles. Higher shock
levels may be experienced e.g. from adjacent machines.
NOTE: These requirements do not cover intentional damage by vandals.
The conditions of this class may be found in:
- some sheds;
- shacks;
- lofts;
- telephone booths;
- some buildings.
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ETS 300 019-1-3: February 1992
Figure 4: Climatogram for class 3.4: Sit
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