SIST EN 300 019-1-4 V3.1.1:2026

• Abstract:

  The purpose of the present document is to define a class of environmental conditions and their severities to which equipment may be exposed. Only severe conditions, which may be harmful to the equipment, are included. The severities specified are those which will have a low probability of being exceeded; generally less than 1 % of the operating time in a year. The present document applies to equipment mounted for stationary use including periods of erection work, down time, maintenance and repair at non-weatherprotected locations defined in clause 5.

• Status: Published
• Public Enquiry End Date: 30-Apr-2026
• Publication Date: 25-Aug-2026
• ICS: 19.040 - Environmental testing
• ICS: 33.050.01 - Telecommunication terminal equipment in general
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 25-May-2026
• Due Date: 30-Jul-2026
• Completion Date: 26-Aug-2026
• Mandate: M/462
• Ref Project: ETSI EN 300 019-1-4 V3.1.1 (2026-05) - Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1: Classification of environmental conditions; Sub-part 4: Stationary use at non-weatherprotected locations

SIST EN 300 019-1-4 V3.1.1:2026 is the Slovenian adoption of ETSI EN 300 019-1-4 V3.1.1, published by SIST. It classifies environmental conditions and severities for telecommunications equipment used for stationary service at non-weatherprotected locations, so engineers, test labs, and buyers can judge what exposure the equipment is expected to withstand. The standard focuses on severe conditions that may harm equipment and includes erection work, downtime, maintenance, and repair at the site.

What does SIST EN 300 019-1-4 V3.1.1:2026 specify?

SIST EN 300 019-1-4 V3.1.1:2026 specifies environmental classes for stationary telecommunications equipment at non-weatherprotected locations and the severities associated with those classes. It organizes the subject into class definitions in Clause 4 and environmental-condition tables in Clause 5, with supporting reference material in the annexes.

The document applies to locations exposed to open weather, contamination, dust, vibration, shocks, and, where relevant, earthquake conditions. In practice, this lets a reader choose the class that matches the installation site before planning design margins, qualification tests, or acceptance criteria.

Annex	What it covers
Annex A	Bibliography
Annex B	Change history

What are the key requirements of SIST EN 300 019-1-4 V3.1.1:2026?

Clause 4 sets the environmental class structure, and Clause 5 gives the conditions that belong to each class. The practical point is that the standard is a classification framework: you select the right class first, then use the associated severities for environmental testing or site assessment.

• Clause 4.0 defines the general application area for non-weatherprotected locations. It covers direct weather exposure, sunlight, precipitation, splashing water, mould growth, animals other than termites, urban and coastal contamination, sand and dust, transmitted vibration, and possible shocks from nearby machines or vehicles. In practice, this tells you whether a site belongs in this family of classes at all.

• Clauses 4.1 to 4.4 divide the environments into sheltered and open-air groups. The sheltered classes are 4.10, 4.10L, and 4.10H, while the open-air classes are 4.11, 4.12, and 4.13. This matters because sheltered and open-air sites face different combinations of temperature, radiation, moisture, and contamination.

• Clause 4.1 links class 4.10 and its variants to combinations of IEC 60721-3-4 and ISO 9223 classes. The variants separate cold climates from tropical, arid, and temperate climates, while still including solar effects where stated. For a reader, this means the standard gives different envelopes for sheltered sites instead of one generic outdoor profile.

• Clauses 4.2 to 4.4 assign the open-air classes by climate: tropical for 4.11, arid and temperate for 4.12, and cold and polar for 4.13. These classes also point to specific combinations from IEC 60721-3-4 and ISO 9223. In practice, this helps you match the class to the climate zone of the installation.

• Clause 5.1 defines the climatic conditions for all classes. It covers low and high air temperature, humidity, absolute humidity, rate of temperature change, pressure, solar radiation, heat radiation, movement of surrounding air, condensation, precipitation, rain intensity, driving rain, snow load, rain temperature, other water sources, and ice or frost. This is the core input for climatic qualification and for deciding whether a housing, seal, coating, or thermal design is suitable.

• Clause 5.2 and Clause 5.3 address biological and chemically active substances. The biological table covers flora and fauna, including mould, fungus, rodents, and termites for the special class. The chemical table covers salt mist and airborne corrosive substances such as sulphur dioxide, nitrogen dioxide, nitric acid, ozone, hydrogen sulphide, chlorine, chlorine ion, ammonia, particles, dust deposits, and soot. In practice, this is the part that drives corrosion protection, material choice, and cleaning or maintenance planning.

• Clause 5.4 and Clause 5.5 define mechanically active substances and mechanical conditions. The document distinguishes sedimentary dust, suspended dust, windblown dust, and windblown sand, then gives stationary vibration and shock conditions for the classes. This matters because airflow, filters, seals, supports, and fasteners must suit the dust load and vibration level.

• Clause 5.6 covers earthquake conditions when earthquakes are likely. It uses Response Spectrum (RS), Zero Period Acceleration (ZPA), and related parameters to describe seismic exposure for equipment mounted at ground level or on rigid structures. If the equipment is mounted on pylons, poles, or other flexible structures, the structure itself must be considered or the RS must be corrected, and equipment on rigid building tops uses the companion part for weatherprotected locations.

What terms does SIST EN 300 019-1-4 V3.1.1:2026 define?

• Absolute humidity - the mass of water vapour associated with one cubic metre of dry air in an air/water vapour mixture.
• Non-weatherprotected location - a location where the equipment is not protected from direct weather influences.
• Relative humidity - the ratio of water-vapour partial pressure in moist air to the saturation pressure at the same temperature.
• Sheltered location - a location covered by a structure that protects the product from direct meteorological conditions such as sunlight and heavy rain.
• Stationary use - equipment mounted firmly on a structure, on mounting devices, or permanently placed at a site; short handling during erection, downtime, maintenance, and repair is included.
• Response Spectrum (RS) - the frequency-dependent representation of maximum response of single-degree-of-freedom oscillators under transient base motion.
• Zero Period Acceleration (ZPA) - the high-frequency asymptotic acceleration level of the RS.
• UltraViolet (UV) - ultraviolet radiation.

Who uses SIST EN 300 019-1-4 V3.1.1:2026?

SIST EN 300 019-1-4 V3.1.1:2026 is used by people who need to classify outdoor stationary telecom sites and translate that classification into design or test conditions. Typical users include equipment designers, environmental and reliability engineers, test laboratories, quality managers, procurement teams, and certification or conformity assessment staff.

It is especially relevant for telecommunications equipment manufacturers and for organizations installing or buying equipment for sheltered or open-air sites. In practice, they use it to choose the environmental class, plan qualification tests, and document that the chosen installation envelope matches the site.

What changed in SIST EN 300 019-1-4 V3.1.1:2026 from the previous edition?

The change history states that the environmental classes were revised on the basis of IEC 60721-3-4:2019. It also states that the new classes are not comparable with the previous classes taken from IEC 60721-3-4:1995, so the classes were given new numbers.

Which standards are used with SIST EN 300 019-1-4 V3.1.1:2026?

Standard	Role in this document
ETSI EN 300 019-1-3	Companion part for stationary use at weatherprotected locations; also used in Clause 5.6 for equipment on top of buildings with a rigid structure.
IEC 60721-3-4:2019	Basis for the class combinations used to define the environmental envelopes.
ISO 9223:2012	Basis for the corrosivity classes used in the chemical environment classification.
IEC 60721-2-6:2022	Provides the earthquake environment zone used in Clause 5.6.
IEC 60068-3-3:2019	Provides seismic test methods and guidance used to derive earthquake parameters and RS.

What does the SIST EN 300 019-1-4 V3.1.1:2026 document contain?

The document contains class definitions, environmental-condition tables, climatograms, and a seismic response spectrum. Clause 5 provides tables for climatic, biological, chemically active, mechanically active, mechanical, and earthquake conditions, which are the main references for test planning and site classification.

Figures 1 to 6 present climatograms for the different environmental classes, and Figure 7 with Table 7 describes the earthquake RS. Annex A adds a bibliography, and Annex B records the change history. In practice, the document is used to support equipment design, environmental testing, qualification, and audit or specification work for stationary telecommunications installations.

Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)

EUROPEAN STANDARD
Environmental Engineering (EE);
Environmental conditions and environmental tests
for telecommunications equipment;
Part 1: Classification of environmental conditions;
Sub-part 4: Stationary use at non-weatherprotected locations

2 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)

Reference
REN/EE-017014
Keywords
environment, equipment practice, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 Environmental classes . 7
4.0 General . 7
4.1 Class 4.10: sheltered non-weatherprotected locations in tropical, arid, temperate, and cold climatic
classification . 8
4.1.0 Class 4.10 full temperature range . 8
4.1.1 Class 4.10L: sheltered non-weatherprotected locations in cold climatic classification . 8
4.1.2 Class 4.10H: sheltered non-weatherprotected locations in tropical, arid, temperate climatic
classification . 9
4.2 Class 4.11: Open-air non-weatherprotected locations in the tropical climatic . 10
4.3 Class 4.12: Open-air non-weatherprotected locations in the arid and temperate climatic classification . 10
4.4 Class 4.13: Open-air non-weatherprotected locations in the cold and polar climatic classifications . 11
5 Environmental conditions. 12
5.1 Climatic conditions. 12
5.2 Biological conditions . 13
5.3 Chemically active substances . 13
5.4 Mechanically active substances . 15
5.5 Mechanical conditions . 15
5.6 Earthquake conditions . 15
Annex A (informative): Bibliography . 18
Annex B (informative): Change history . 19
History . 20

ETSI
4 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This draft European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE),
and is now submitted for the combined Public Enquiry and Vote phase of the ETSI.
The present document is part 1, sub-part 4 of a multi-part deliverable covering the classification of environmental
conditions and environmental tests for telecommunications equipment, as identified below:
Part 1: "Classification of environmental conditions": (see note 1)
Sub-part 0: "Introduction";
Sub-part 1: "Storage";
Sub-part 2: "Transportation";
Sub-part 3: "Stationary use at weatherprotected locations";
Sub-part 4: "Stationary use at non-weatherprotected locations";
Sub-part 5: "Ground vehicle installations";
Sub-part 6: "Ship environments";
Sub-part 7: "Portable and non-stationary use";
Sub-part 8: "Stationary use at underground locations";
Part 2: "Specification of environmental tests" (see note 2).
NOTE 1: Specifies different standardized environmental classes covering climatic and biological conditions,
chemically and mechanically active substances and mechanical conditions during storage, transportation
and in use. Sub-part 1-0 forms a general overview of part 1.
NOTE 2: Specifies the recommended test severities and test methods for the different environmental classes.
ETSI
5 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)

Proposed national transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
6 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)
1 Scope
The purpose of the present document is to define a class of environmental conditions and their severities to which
equipment may be exposed. Only severe conditions, which may be harmful to the equipment, are included. The
severities specified are those which will have a low probability of being exceeded; generally less than 1 % of the
operating time in a year.
The present document applies to equipment mounted for stationary use including periods of erection work, down time,
maintenance and repair at non-weatherprotected locations defined in clause 5.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 300 019-1-3: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1: Classification of environmental
conditions; Sub-part 3: Stationary use at weatherprotected locations".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Void.
[i.2] IEC 60721-3-4:2019: "Classification of environmental conditions - Part 3-4: Classification of
groups of environmental parameters and their severities - Stationary use at non-weatherprotected
locations".
[i.3] Void.
[i.4] ISO 9223:2012: "Corrosion of metals and alloys — Corrosivity of atmospheres — Classification,
determination and estimation".
[i.5] IEC 60721-2-6:2022: "Classification of environmental conditions - Part 2-6: Environmental
conditions appearing in nature - Earthquake vibration and shock".
[i.6] IEC 60068-3-3:2019: "Environmental testing - Part 3-3: Supporting documentation and guidance -
Seismic test methods for equipment".
ETSI
7 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
absolute humidity: mass of water vapour in grammes which is associated with one cubic metre of dry air in an
air/water vapour mixture
non-weatherprotected location: location at which the equipment is not protected from direct weather influences
relative humidity: ratio of the partial pressure of the water vapour in moist air at a given temperature, to the partial
pressure of the water vapour in saturated air at the same temperature
sheltered location: location at which a product is covered by a structure to protect it from direct meteorological
conditions, i.e. direct sunlight, heavy rain
stationary use: use of the equipment mounted firmly on the structure, or on mounting devices, or it is permanently
placed at a certain site
NOTE: It is not intended for portable use - but short periods of handling during erection works, down time,
maintenance and repair at the location are included.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
RS Response Spectrum
UV UltraViolet
ZPA Zero Period Acceleration
4 Environmental classes
4.0 General
The classes shown in parentheses, e.g. (C3), may be selected for special applications.
These classes shall apply to a non-weatherprotected location.
These classes shall apply to locations:
• which are directly exposed to an open-air climate, including solar radiation, movement of the surrounding air,
precipitation and water jets; splashing water;
• where mould growth, or attacks by animals but excluding 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. It also applies to coastal areas;
NOTE 1: At locations in the immediate neighbourhood of industrial sources with chemical emissions either special
precautions should be taken or a special chemical class should be chosen.
ETSI
8 Draft ETSI EN 300 019-1-4 V3.1.0 (2026-02)
• in
...

EUROPEAN STANDARD
Environmental Engineering (EE);
Environmental conditions and environmental tests
for telecommunications equipment;
Part 1: Classification of environmental conditions;
Sub-part 4: Stationary use at non-weatherprotected locations

2 ETSI EN 300 019-1-4 V3.1.1 (2026-05)

Reference
REN/EE-017014
Keywords
environment, equipment practice, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 Environmental classes . 7
4.0 General . 7
4.1 Class 4.10: sheltered non-weatherprotected locations in tropical, arid, temperate, and cold climatic
classification . 8
4.1.0 Class 4.10 full temperature range . 8
4.1.1 Class 4.10L: sheltered non-weatherprotected locations in cold climatic classification . 8
4.1.2 Class 4.10H: sheltered non-weatherprotected locations in tropical, arid, temperate climatic
classification . 9
4.2 Class 4.11: Open-air non-weatherprotected locations in the tropical climatic . 10
4.3 Class 4.12: Open-air non-weatherprotected locations in the arid and temperate climatic classification . 10
4.4 Class 4.13: Open-air non-weatherprotected locations in the cold and polar climatic classifications . 11
5 Environmental conditions. 12
5.1 Climatic conditions. 12
5.2 Biological conditions . 13
5.3 Chemically active substances . 13
5.4 Mechanically active substances . 15
5.5 Mechanical conditions . 15
5.6 Earthquake conditions . 15
Annex A (informative): Bibliography . 18
Annex B (informative): Change history . 19
History . 20

ETSI
4 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE).
The present document is part 1, sub-part 4 of a multi-part deliverable covering the classification of environmental
conditions and environmental tests for telecommunications equipment, as identified below:
Part 1: "Classification of environmental conditions": (see note 1)
Sub-part 0: "Introduction";
Sub-part 1: "Storage";
Sub-part 2: "Transportation";
Sub-part 3: "Stationary use at weatherprotected locations";
Sub-part 4: "Stationary use at non-weatherprotected locations";
Sub-part 5: "Ground vehicle installations";
Sub-part 6: "Ship environments";
Sub-part 7: "Portable and non-stationary use";
Sub-part 8: "Stationary use at underground locations";
Part 2: "Specification of environmental tests" (see note 2).
NOTE 1: Specifies different standardized environmental classes covering climatic and biological conditions,
chemically and mechanically active substances and mechanical conditions during storage, transportation
and in use. Sub-part 1-0 forms a general overview of part 1.
NOTE 2: Specifies the recommended test severities and test methods for the different environmental classes.
ETSI
5 ETSI EN 300 019-1-4 V3.1.1 (2026-05)

National transposition dates
Date of adoption of this EN: 13 May 2026
Date of latest announcement of this EN (doa): 31 August 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2027
Date of withdrawal of any conflicting National Standard (dow): 28 February 2027

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
6 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
1 Scope
The purpose of the present document is to define a class of environmental conditions and their severities to which
equipment may be exposed. Only severe conditions, which may be harmful to the equipment, are included. The
severities specified are those which will have a low probability of being exceeded; generally less than 1 % of the
operating time in a year.
The present document applies to equipment mounted for stationary use including periods of erection work, down time,
maintenance and repair at non-weatherprotected locations defined in clause 5.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 300 019-1-3: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1: Classification of environmental
conditions; Sub-part 3: Stationary use at weatherprotected locations".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Void.
[i.2] IEC 60721-3-4:2019: "Classification of environmental conditions - Part 3-4: Classification of
groups of environmental parameters and their severities - Stationary use at non-weatherprotected
locations".
[i.3] Void.
[i.4] ISO 9223:2012: "Corrosion of metals and alloys — Corrosivity of atmospheres — Classification,
determination and estimation".
[i.5] IEC 60721-2-6:2022: "Classification of environmental conditions - Part 2-6: Environmental
conditions appearing in nature - Earthquake vibration and shock".
[i.6] IEC 60068-3-3:2019: "Environmental testing - Part 3-3: Supporting documentation and guidance -
Seismic test methods for equipment".
ETSI
7 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
absolute humidity: mass of water vapour in grammes which is associated with one cubic metre of dry air in an
air/water vapour mixture
non-weatherprotected location: location at which the equipment is not protected from direct weather influences
relative humidity: ratio of the partial pressure of the water vapour in moist air at a given temperature, to the partial
pressure of the water vapour in saturated air at the same temperature
sheltered location: location at which a product is covered by a structure to protect it from direct meteorological
conditions, i.e. direct sunlight, heavy rain
stationary use: use of the equipment mounted firmly on the structure, or on mounting devices, or it is permanently
placed at a certain site
NOTE: It is not intended for portable use - but short periods of handling during erection works, down time,
maintenance and repair at the location are included.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
RS Response Spectrum
UV UltraViolet
ZPA Zero Period Acceleration
4 Environmental classes
4.0 General
The classes shown in parentheses, e.g. (C3), may be selected for special applications.
These classes shall apply to a non-weatherprotected location.
These classes shall apply to locations:
• which are directly exposed to an open-air climate, including solar radiation, movement of the surrounding air,
precipitation and water jets; splashing water;
• where mould growth, or attacks by animals but excluding 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. It also applies to coastal areas;
NOTE 1: At locations in the immediate neighbourhood of industrial sources with chemical emissions either special
precautions should be taken or a special chemical class should be chosen.
ETSI
8 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
• in areas with sand or dust sources, in
...

SLOVENSKI STANDARD
01-oktober-2026
Okoljski inženiring (EE) - Okoljski pogoji in preskusi vplivov okolja na
telekomunikacijsko opremo - 1. del: Klasifikacija okoljskih pogojev - 4. poddel:
Fiksna uporaba na lokacijah, ki niso zaščitene pred vremenskimi vplivi
Environmental Engineering (EE) - Environmental conditions and environmental tests for
telecommunications equipment - Part 1: Classification of environmental conditions - Sub-
part 4: Stationary use at non-weatherprotected locations
Ta slovenski standard je istoveten z: ETSI EN 300 019-1-4 V3.1.1 (2026-05)
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 STANDARD
Environmental Engineering (EE);
Environmental conditions and environmental tests
for telecommunications equipment;
Part 1: Classification of environmental conditions;
Sub-part 4: Stationary use at non-weatherprotected locations

2 ETSI EN 300 019-1-4 V3.1.1 (2026-05)

Reference
REN/EE-017014
Keywords
environment, equipment practice, testing
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from the
ETSI Search & Browse Standards application.
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format on ETSI deliver repository.
Users should be aware that the present document may be revised or have its status changed,
this information is available in the Milestones listing.
If you find errors in the present document, please send your comments to
the relevant service listed under Committee Support Staff.
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure (CVD) program.
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2026.
All rights reserved.
ETSI
3 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
Contents
Intellectual Property Rights . 4
Foreword . 4
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 7
3.3 Abbreviations . 7
4 Environmental classes . 7
4.0 General . 7
4.1 Class 4.10: sheltered non-weatherprotected locations in tropical, arid, temperate, and cold climatic
classification . 8
4.1.0 Class 4.10 full temperature range . 8
4.1.1 Class 4.10L: sheltered non-weatherprotected locations in cold climatic classification . 8
4.1.2 Class 4.10H: sheltered non-weatherprotected locations in tropical, arid, temperate climatic
classification . 9
4.2 Class 4.11: Open-air non-weatherprotected locations in the tropical climatic . 10
4.3 Class 4.12: Open-air non-weatherprotected locations in the arid and temperate climatic classification . 10
4.4 Class 4.13: Open-air non-weatherprotected locations in the cold and polar climatic classifications . 11
5 Environmental conditions. 12
5.1 Climatic conditions. 12
5.2 Biological conditions . 13
5.3 Chemically active substances . 13
5.4 Mechanically active substances . 15
5.5 Mechanical conditions . 15
5.6 Earthquake conditions . 15
Annex A (informative): Bibliography . 18
Annex B (informative): Change history . 19
History . 20

ETSI
4 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI IPR online database.
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™, LTE™ and 5G™ logo are trademarks of ETSI registered for the benefit of its Members and of the
3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of ®
the oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This European Standard (EN) has been produced by ETSI Technical Committee Environmental Engineering (EE).
The present document is part 1, sub-part 4 of a multi-part deliverable covering the classification of environmental
conditions and environmental tests for telecommunications equipment, as identified below:
Part 1: "Classification of environmental conditions": (see note 1)
Sub-part 0: "Introduction";
Sub-part 1: "Storage";
Sub-part 2: "Transportation";
Sub-part 3: "Stationary use at weatherprotected locations";
Sub-part 4: "Stationary use at non-weatherprotected locations";
Sub-part 5: "Ground vehicle installations";
Sub-part 6: "Ship environments";
Sub-part 7: "Portable and non-stationary use";
Sub-part 8: "Stationary use at underground locations";
Part 2: "Specification of environmental tests" (see note 2).
NOTE 1: Specifies different standardized environmental classes covering climatic and biological conditions,
chemically and mechanically active substances and mechanical conditions during storage, transportation
and in use. Sub-part 1-0 forms a general overview of part 1.
NOTE 2: Specifies the recommended test severities and test methods for the different environmental classes.
ETSI
5 ETSI EN 300 019-1-4 V3.1.1 (2026-05)

National transposition dates
Date of adoption of this EN: 13 May 2026
Date of latest announcement of this EN (doa): 31 August 2026
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2027
Date of withdrawal of any conflicting National Standard (dow): 28 February 2027

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
6 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
1 Scope
The purpose of the present document is to define a class of environmental conditions and their severities to which
equipment may be exposed. Only severe conditions, which may be harmful to the equipment, are included. The
severities specified are those which will have a low probability of being exceeded; generally less than 1 % of the
operating time in a year.
The present document applies to equipment mounted for stationary use including periods of erection work, down time,
maintenance and repair at non-weatherprotected locations defined in clause 5.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found in the
ETSI docbox.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 300 019-1-3: "Environmental Engineering (EE); Environmental conditions and
environmental tests for telecommunications equipment; Part 1: Classification of environmental
conditions; Sub-part 3: Stationary use at weatherprotected locations".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long-term validity.
The following referenced documents may be useful in implementing an ETSI deliverable or add to the reader's
understanding, but are not required for conformance to the present document.
[i.1] Void.
[i.2] IEC 60721-3-4:2019: "Classification of environmental conditions - Part 3-4: Classification of
groups of environmental parameters and their severities - Stationary use at non-weatherprotected
locations".
[i.3] Void.
[i.4] ISO 9223:2012: "Corrosion of metals and alloys — Corrosivity of atmospheres — Classification,
determination and estimation".
[i.5] IEC 60721-2-6:2022: "Classification of environmental conditions - Part 2-6: Environmental
conditions appearing in nature - Earthquake vibration and shock".
[i.6] IEC 60068-3-3:2019: "Environmental testing - Part 3-3: Supporting documentation and guidance -
Seismic test methods for equipment".
ETSI
7 ETSI EN 300 019-1-4 V3.1.1 (2026-05)
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the following terms apply:
absolute humidity: mass of water vapour in grammes which is associated with one cubic metre of dry air in an
air/water vapour mixture
non-weatherprotected location: location at which the equipment is not protected from direct weather influences
relative humidity: ratio of the partial pressure of the water vapour in moist air at a given temperature, to the partial
pressure of the water vapour in saturated air at the same temperature
sheltered location: location at which a product is covered by a structure to protect it from direct meteorological
conditions, i.e. direct sunlight, heavy rain
stationary use: use of the equipment mounted firmly on the structure, or on mounting devices, or it is permanently
placed at a certain site
NOTE: It is not intended for portable use - but short periods of handling during erection works, down time,
maintenance and repair at the location are included.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
RS Response Spectrum
UV UltraViolet
ZPA Zero Period Acceleration
4 Environmental classes
4.0 General
The classes shown in parentheses, e.g. (C3), may be selected for special applications.
These classes shall apply to a non-weatherprotected location.
These classes shall apply to locations:
• which are directly exposed to an open-air climate, including solar radiation, movement of the surrounding air,
precipitation and water jets; splashing water;
• where mould growth, or attacks by animals but excluding termites, may occur;
• with normal levels of contaminants experienced in urban areas with industrial activi
...