DES/EE-0112

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  • Standardization document
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IEC 62599-1:2010 specifies environmental test methods to be used for testing the system components of the following alarm systems, intended for use in and around buildings:
- access control systems, for security applications;
- alarm transmission systems;
- CCTV systems, for security applications;
- combined and/or integrated systems;
- intruder and hold-up alarm systems;
- remote receiving and/or surveillance centres;
- social alarm systems.

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IEC 60721-3-9:2024 classifies groups of microclimatic conditions, to which components (basic parts, assemblies, built-in units) can be subjected inside products, which are used under the climatic conditions as classified in IEC 60721-3-3 and IEC 60721-3-4.
This second edition cancels and replaces the first edition published in 1993, Amendment 1:1994 and Corrigendum 1:1995. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 2 has been updated;
b) Clause 4 has been re-edited and simplified;
c) Annex A has been revised and updated;
d) a new Annex B has been added and gives the origin of the constitutional diagram for humid air, which is the basis of drawing the climatogram for a microclimate.

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IEC 60721-3-9:2024 classifies groups of microclimatic conditions, to which components (basic parts, assemblies, built-in units) can be subjected inside products, which are used under the climatic conditions as classified in IEC 60721-3-3 and IEC 60721-3-4. This second edition cancels and replaces the first edition published in 1993, Amendment 1:1994 and Corrigendum 1:1995. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Clause 2 has been updated; b) Clause 4 has been re-edited and simplified; c) Annex A has been revised and updated; d) a new Annex B has been added and gives the origin of the constitutional diagram for humid air, which is the basis of drawing the climatogram for a microclimate.

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The present document specifies an evolved version of the Green Abstraction Layer capable of operating within ETSI
NFV environments.

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  • Standard
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  • Standardization document
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IEC 60068-2-86:2024 provides a test procedure for use with multi-exciter and multi-axis vibration test systems. The vibration test is intended for general application to components, equipment, and other products, hereinafter referred to as "specimens", subjected to dynamic environments that could arise during an equipment life cycle. Although this document is mainly intended for vibration testing, the procedure is also applied to certain types of shock and transient tests.

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IEC 60721-3-9:2024 classifies groups of microclimatic conditions, to which components (basic parts, assemblies, built-in units) can be subjected inside products, which are used under the climatic conditions as classified in IEC 60721-3-3 and IEC 60721-3-4.
This second edition cancels and replaces the first edition published in 1993, Amendment 1:1994 and Corrigendum 1:1995. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Clause 2 has been updated;
b) Clause 4 has been re-edited and simplified;
c) Annex A has been revised and updated;
d) a new Annex B has been added and gives the origin of the constitutional diagram for humid air, which is the basis of drawing the climatogram for a microclimate.

  • Standard
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IEC 60068-2-86:2024 provides a test procedure for use with multi-exciter and multi-axis vibration test systems. The vibration test is intended for general application to components, equipment, and other products, hereinafter referred to as "specimens", subjected to dynamic environments that could arise during an equipment life cycle. Although this document is mainly intended for vibration testing, the procedure is also applied to certain types of shock and transient tests.

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This document provides tests with specified ambient temperature changes to analyse their
impacts on specimens.

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IEC 60068-2-17:2023 deals with seal tests applicable to the external and internal detection in container sealing of gross leaks and fine leaks to determine the effectiveness of seals of specimens. For further tests to verify the ability of enclosures, covers and seals to maintain components and equipment in good working order, IEC 60068‑2‑18 can be helpful.
This fifth edition cancels and replaces the fourth edition published in 1994. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) "Survey of sealing tests" has been deleted and the relevant content moved to a new Clause 4 "General";
b) the Scope has been revised;
c) the figures have been updated for clarification purposes;
d) all non-SI units have been removed;
e) the information to be given in the relevant specification has been revised.

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This part of IEC 60068 provides guidance regarding the performance of cold and dry heat tests.

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This part of IEC 60068 provides the necessary information and the basic principles of the effect
of humidity in the context of environmental testing to assist in preparing relevant specifications,
such as standards for components or equipment. Furthermore, information is provided on
operating climatic test chambers.
The object of this document is to present supporting documentation and guidance for a range
of damp heat tests which, when specified by the relevant specification, can be applied to
demonstrate the performance of equipment for which damp heat testing is required with the
main aim of achieving qualification. This information and basic principles are intended to help
selecting appropriate tests and test severities for specific products and, in some cases, specific
types of application.
The object of damp heat tests is to determine the ability of products to withstand the stresses
occurring in a high relative humidity environment, with or without condensation, and with special
regard to variations of electrical and mechanical characteristics. Damp heat tests can also be
utilized to check the resistance of a specimen to some forms of corrosion attack.

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This document describes the pros and cons for the different methods for reporting the potential release of dangerous substances into soil, groundwater or surface water and indoor air, which are:
—   level (or declared values); and
—   classes;
as defined in the Construction Products Regulation (CPR).
In addition, the pros and cons of additional methods based on discussion in CEN/TCs and WGs are described, which are:
—   categories; and
—   manufacturer’s declaration.

  • Technical report
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IEC 60068-2-86:2024 provides a test procedure for use with multi-exciter and multi-axis vibration test systems. The vibration test is intended for general application to components, equipment, and other products, hereinafter referred to as "specimens", subjected to dynamic environments that could arise during an equipment life cycle. Although this document is mainly intended for vibration testing, the procedure is also applied to certain types of shock and transient tests.

  • Standard
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This document describes the pros and cons for the different methods for reporting the potential release of dangerous substances into soil, groundwater or surface water and indoor air, which are:
—   level (or declared values); and
—   classes;
as defined in the Construction Products Regulation (CPR).
In addition, the pros and cons of additional methods based on discussion in CEN/TCs and WGs are described, which are:
—   categories; and
—   manufacturer’s declaration.

  • Technical report
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IEC TR 60068-3-15:2024 describes vacuum-assisted soldering considering the thermal profiling, soldering methods, suitability of the components and vacuum features of soldering systems. It is based on practical experiences from manufacturers, component, material, and soldering systems suppliers. It supports manufacturers by providing information about the functionality of vacuum and effect of vacuum on components performance.

  • Technical report
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The present document specifies test severities and methods for the verification of the required resistibility of equipment
according to the relevant environmental class.
The tests defined in the present document apply to the use of telecommunication equipment installed permanently or
temporarily in ships and cover the environments and the vessels stated in ETSI EN 300 019-1-6 [1].

  • Standard
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  • Standard
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  • Standard
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IEC 60721-2-6:2022 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks.
Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. The accelerations given are for ground surface conditions only. Conditions related to structures are referred to but restricted to general case descriptions.
This second edition cancels and replaces the first edition published in 1990. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
the main aim of this revision is to classify in a limited number of classes the seismic activity level of the zone where the equipment could be installed;
the correlation between intensity scales, magnitude scales and peak ground acceleration is deleted due to the scientific uncertainty to define such a correlation in a rigorous way;
updated scales are given both for intensity and for magnitude;
the earthquake zone map, which was not usable in practice, is replaced by an annex giving information about how to retrieve consistent peak ground acceleration distribution all over the world;
with regard to identification of the peak ground seismic acceleration of the zone, where the equipment could be installed, the user is made aware that national standards and laws can apply.

  • Standard
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IEC 60068-3-4:2023 is available as IEC 60068-3-4:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-4:2023 provides the necessary information and the basic principles of the effect of humidity in the context of environmental testing to assist in preparing relevant specifications, such as standards for components or equipment. Furthermore, information is provided on operating climatic test chambers. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the requirements for distilled and deionized water have been revised; b) recommendations for the cleaning procedure of test chambers have been included; c) humidification systems (ultrasonic humidifiers and atomizers) have been added; d) the description of water penetration mechanisms has been refined.

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IEC 60068-2-14:2023 is available as IEC 60068-2-14:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-2-14:2023 provides tests with specified ambient temperature changes to analyse their impacts on specimens. This seventh edition cancels and replaces the sixth edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating of the figures for clarification purposes; b) updating of specimen temperature(s) and severities as well as tolerances for change of temperature tests; c) revision of standardized requirements for test reports for Tests Na and Nb.

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IEC 60068-3-1:2023 is available as IEC 60068-3-1:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-1:2023 provides guidance regarding the performance of cold and dry heat tests. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) information relating to specimen temperatures has been revised; b) information relating to tests of multiple specimens has been revised; c) the effect of air density has been added; d) a recommendation for corrective actions regarding IR radiation has been added; e) the requirements for the mounting and supports of the specimen have been revised.

  • Standard
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IEC 60068-2-17:2023 deals with seal tests applicable to the external and internal detection in container sealing of gross leaks and fine leaks to determine the effectiveness of seals of specimens. For further tests to verify the ability of enclosures, covers and seals to maintain components and equipment in good working order, IEC 60068‑2‑18 can be helpful. This fifth edition cancels and replaces the fourth edition published in 1994. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) "Survey of sealing tests" has been deleted and the relevant content moved to a new Clause 4 "General"; b) the Scope has been revised; c) the figures have been updated for clarification purposes; d) all non-SI units have been removed; e) the information to be given in the relevant specification has been revised.

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This document specifies the technical requirements to ensure consistent reporting on the test method, inspection rules, marks, packaging, transportation and storage of conductivity-temperature-depth (CTD) profilers. This document is applicable to marine fixed-point and mobile observation, monitoring platform and the various types of shipborne CTD measuring instruments. NOTE A CTD directly measures conductivity, temperature, pressure of seawater. Depth is the conversion of pressure according to the Formula (C.1).

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IEC 60068-2-14:2023 is available as IEC 60068-2-14:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-2-14:2023 provides tests with specified ambient temperature changes to analyse their impacts on specimens. This seventh edition cancels and replaces the sixth edition published in 2009. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) updating of the figures for clarification purposes;
b) updating of specimen temperature(s) and severities as well as tolerances for change of temperature tests;
c) revision of standardized requirements for test reports for Tests Na and Nb.

  • Standard
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  • Standard
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IEC TS 60721-4-3:2023 This part of IEC 60721 deals with the correlation and transformation of the conditions given in IEC 60721-3-3 to the environmental test procedures defined in IEC 60068-2.
This document provides test procedures and test severities for electrotechnical equipment operated at stationary weatherprotected locations for the product classes set out in IEC 60721-3-3.
This first edition cancels and replaces IEC TR 60721-4-3:2001 and IEC TR 60721-4-3:2001/AMD1:2003. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to IEC TR 60721-4-3:2001 and IEC TR 60721-4-3:2001/AMD1:2003:
a) the document has been totally reworked;
b) all figures have been removed, except in Annex A;
c) severities have been aligned with those of IEC 60721-3-3:2019.

  • Technical specification
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IEC 60068-3-4:2023 is available as IEC 60068-3-4:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-4:2023 provides the necessary information and the basic principles of the effect of humidity in the context of environmental testing to assist in preparing relevant specifications, such as standards for components or equipment. Furthermore, information is provided on operating climatic test chambers. This second edition cancels and replaces the first edition published in 2001. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) the requirements for distilled and deionized water have been revised;
b) recommendations for the cleaning procedure of test chambers have been included;
c) humidification systems (ultrasonic humidifiers and atomizers) have been added;
d) the description of water penetration mechanisms has been refined.

  • Standard
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  • Standard
    34 pages
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IEC 60068-3-1:2023 is available as IEC 60068-3-1:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60068-3-1:2023 provides guidance regarding the performance of cold and dry heat tests. This third edition cancels and replaces the second edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) information relating to specimen temperatures has been revised;
b) information relating to tests of multiple specimens has been revised;
c) the effect of air density has been added;
d) a recommendation for corrective actions regarding IR radiation has been added;
e) the requirements for the mounting and supports of the specimen have been revised.

  • Standard
    44 pages
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  • Standard
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IEC 60068-2-17:2023 deals with seal tests applicable to the external and internal detection in container sealing of gross leaks and fine leaks to determine the effectiveness of seals of specimens. For further tests to verify the ability of enclosures, covers and seals to maintain components and equipment in good working order, IEC 60068‑2‑18 can be helpful.
This fifth edition cancels and replaces the fourth edition published in 1994. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) "Survey of sealing tests" has been deleted and the relevant content moved to a new Clause 4 "General";
b) the Scope has been revised;
c) the figures have been updated for clarification purposes;
d) all non-SI units have been removed;
e) the information to be given in the relevant specification has been revised.

  • Standard
    101 pages
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IEC TR 60721-4-4:2001+A1:2003 Deals with the correlation and transformation of the conditions given in IEC 60721-3-4 to the environmental tests defined in IEC 60068-2. An environment may consist of a number of environmental conditions such as dynamic, climatic and biological and other effects due to chemically and mechanically active substances. In this report, only dynamic and climatic conditions have been considered. The purpose of this technical report is to provide the specification writer with guidance together with a set of easy-to-use tables which correlate and transform these conditions.
This consolidated version consists of the first edition (2001) and its amendment 1 (2003). Therefore, no need to order amendment in addition to this publication.

  • Technical report
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  • Technical report
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IEC TR 60721-4-2:2001+A1:2003 Deals with the correlation and transformation of the conditions given in IEC 60721-3-2 to the environmental tests defined in IEC 60068-2. An environment may consist of a number of environmental conditions such as dynamic, climatic and biological and other effects due to chemically and mechanically active substances. In this report, only dynamic and climatic conditions have been considered. The purpose of this technical report is to provide the specification writer with guidance together with a set of easy-to-use tables which correlate and transform these conditions.
This consolidated version consists of the first edition (2001) and its amendment 1 (2003). Therefore, no need to order amendment in addition to this publication.

  • Technical report
    81 pages
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  • Technical report
    81 pages
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IEC 60721-4-1:2001+A1:2003 Deals with the correlation and transformation of the condition given in IEC 60721-3-1 to the environmental tests defined in IEC 60068-2. An environment may consist of a number of environmental conditions such as dynamic, climatic, and biological and other effects, due to chemically and mechanically active substances. In this report, only dynamic and climatic conditions have been considered. The purpose of this technical report is to provide the specification writer with guidance together with a set of easy-to-use tables which correlate and transform these conditions.
This consolidated version consists of the first edition (2001) and its amendment 1 (2003). Therefore, no need to order amendment in addition to this publication.

  • Technical report
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  • Technical report
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This part of IEC 60721 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks.
Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. Accelerations given are for ground surface conditions only.
Conditions related to structures are referred to but restricted to general case descriptions.

  • Standard
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The present document contains requirements and measurements methods for the physical interface "A3" that is situated
between the power supply system(s) and the power consuming ICT equipment:
• the nominal voltage at power interface "A3" of ICT equipment defined in the present document is DC voltage up
to 400 V;
• the output performance of the power equipment including the cable network at the interface "A3";
• the input of the ICT equipment connected to interface "A3".
The DC power can be supplied by a DC output power system e.g. via on-grid AC rectifiers, from DC/DC converters in
solar systems, fuel cells, standby generators including a battery backup.
The present document aims at providing compatibility at interface "A3" between the power supply equipment and different
ICT equipment (including/monitoring, cooling system, etc.) connected to the same power supply.
The requirements are defined for the purpose of the present document to:
• identify a power supply system with the same characteristics for all ICT equipment defined in the area of
application; the area of application may be any location where the interface "A3" is used i.e.
telecommunication centres, Radio Base Stations, datacentres and customer premises;
• facilitate interworking of different loads;
• facilitate the standardization of power supply systems for ICT equipment;
• facilitate the installation, operation and maintenance in the same network of ICT equipment and systems from
different origins;
• secure robustness against temporary voltage deviations and transients during abnormal conditions.
General requirements for safety and EMC are out of the scope of the present document series unless specific
requirement not defined in existing safety or EMC standards.

  • Standard
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  • Standard
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  • Standard
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This part of IEC 60721 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks. Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. Accelerations given are for ground surface conditions only. Conditions related to structures are referred to but restricted to general case descriptions.

  • Standard
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The present document defines an assessment of the direct applicability of the general material efficiency standards to
ICT network infrastructure goods in the context of circular economy. The existing generic standards address durability;
ability to remanufacture; repair, reuse, and upgrade; recyclability and recoverability; assessment of recycled content and
reused components; critical raw material content and information provision. The present document highlights where
further work on metrics/KPI and measurement methodologies may be needed for ICT network infrastructure goods
beyond each of the general standards. Specific product standards will take precedence over the present document. The
present document is a product family standard and will not define specific product requirements.

  • Standard
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  • Standard
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IEC 60721-2-6:2022 deals with environmental conditions appearing in nature related to earthquake vibrations and shocks.
Its object is to define some fundamental properties and quantities for characterization of earthquakes as background material for the severities to which products are liable to be exposed during storage and use. The accelerations given are for ground surface conditions only. Conditions related to structures are referred to but restricted to general case descriptions.
This second edition cancels and replaces the first edition published in 1990. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
the main aim of this revision is to classify in a limited number of classes the seismic activity level of the zone where the equipment could be installed;
the correlation between intensity scales, magnitude scales and peak ground acceleration is deleted due to the scientific uncertainty to define such a correlation in a rigorous way;
updated scales are given both for intensity and for magnitude;
the earthquake zone map, which was not usable in practice, is replaced by an annex giving information about how to retrieve consistent peak ground acceleration distribution all over the world;
with regard to identification of the peak ground seismic acceleration of the zone, where the equipment could be installed, the user is made aware that national standards and laws can apply.
The contents of the corrigendum of October 2023 have been included in this copy.

  • Standard
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1) This document specifies a test procedure that combines horizontal leaching tests with ecotoxicity tests for the assessment of eluates of the construction products specified in this scope subjected to wet conditions in outdoor use.
2) The method specified in this document is intended for the determination of the potential ecotoxicity of eluates extracted out of construction products containing constitutional organic components of main categories of product matrices P (plastics and rubbers), A (sealants and adhesives) or C (paints and coatings) according to CEN/TR 16045.
3) Construction products mainly made of inorganic materials: main categories of product matrices S (silica-based and calcareous products) and M (metals) according to CEN/TR 16045 are excluded, unless:
- the liquid or paste product hardens in direct contact with soil or groundwater; and
- the used binder contains > 50 % organics by mass.
NOTE 1 This exception mainly refers to products used for soil injection and stabilization, e.g. grouts.
Also, the method is not intended for construction products made of treated or untreated solid wood in main category of product matrix W (wood-based products) according to CEN/TR 16045. For engineered bio-based products the test procedure can be of interest.
4) This document is not applicable for the assessment of terrestrial ecotoxicity of construction products.
NOTE 2 Terrestrial ecotoxicity tests for construction products are described in CEN/TR 17105.

  • Technical specification
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The present document contains requirements for the input of the ICT equipment connected to interface "A1".
The voltage at interface "A1" defined in the present document is single phase and three phase AC.
The following voltage range categories are covered:
• Narrow single phase "A1"n-1p and narrow three phase "A1"n-3p AC voltage range defined to comply with
nominal European AC voltages defined in IEC 60038 [i.2].
• Wide single phase "A1"w-1p and wide three phase "A1"w-3p AC voltage range for worldwide nominal AC
voltages. This wide voltage range is based on the nominal voltages defined in IEC 60038 [i.2].
The present document aims at providing compatibility between the power supply equipment and both the ICT equipment,
and the different load units connected to the same interface "A1" (e.g. control/monitoring, cooling system, etc.).
The purpose of the present document is:
• to identify a power supply system with the same characteristics for all ICT equipment defined in the area of
application; the area of application may be any location where the interface "A1" is used i.e.
telecommunication centres, Radio Base Stations, datacentres and customer premises;
• to facilitate interworking of different (types of) loads;
• to facilitate the standardization of power supply systems for ICT equipment;
• to facilitate the installation, operation and maintenance in the same network of ICT equipment and systems
from different origins. General requirements for safety and EMC are out of the scope of the present document
series unless specific requirement not defined in existing safety or EMC standards.
The present document concerns the requirements for the interface between Information and Communication
Technology (ICT) equipment and its power supply. It includes requirements relating to its stability and measurement.
Various other references and detailed measurement and test arrangements are contained in informative annexes.

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  • Amendment
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  • Amendment
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IEC TR 60068-3-12:2022(E) which is a Technical Report, describes the creation of temperature-time profiles (in specific envelope profiles) for reflow soldering of electronic assemblies, considering tolerances resulting from the accuracy of the measuring equipment, preparation method and specifications of the manufacturers of components, circuit boards, solder paste, etc.).
This edition includes the following significant technical changes with respect to the previous edition: a) Extended purpose Guidance is added on how to create a reflow profile considering the tolerances resulting from the accuracy of the measuring equipment, preparation method and specifications of the component manufacturers (components, PCB, solder paste, etc.). b) Distinction from existing standards The envelope profile given in this document does not represent a temperature-time profile for the qualification of materials but defines the reflow process limits for the soldering of electronic assemblies.
The schematic temperature-time-limit curves of the envelope profile are derived from generally valid findings (literature data). Additionally, tolerance considerations are given for all envelope points of the envelope profile.
In contrast to IEC TR 60068-3-12:2014, the creation of the envelope profile is not primarily linked to a concrete example. c) Subclause 8.2 presents an approach for establishing a possible temperature profile for a lead-free reflow soldering process using SnAgCu solder paste that is taken from IEC TR 60068-3-12:2014. d) Synergies with existing standards Limit values and tolerances from standards and guidelines for the qualification of materials are included in this document and are listed as examples in the references.

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The present document contains requirements and measurements methods for the physical interface "A" that is situated
between the power supply system(s) and the power consuming ICT equipment.
The nominal voltage at power interface "A" of ICT equipment defined in the present document is DC voltage -48 V.
The DC power can be supplied by a DC output power system (e.g. based on AC rectifiers on grid or DC/DC converters on
solar system, fuel cell, DC engine or fuel cell generator) and also directly supplied by a battery backup in this DC power
system. The purpose of the present document is to be able to use a power supply system with the same characteristics
for all ICT equipment defined in the area of application:
- to facilitate inter working of different types of load units;
- to facilitate the standardization of ICT equipment;
- to facilitate the installation, operation and maintenance in the same network of ICT equipment and systems
from different origins.
The present document aims at providing electrical compatibility between the power supply equipment and the power
consuming ICT equipment, between different system blocks and loads connected to the same power supply feeding the
interface "A" (e.g. control/monitoring, cooling system, etc.).
The requirements are defined for:
- the power supply input of any type of ICT equipment installed at telecommunication centres that are connected
to interface "A" powered by DC;
- any type of ICT equipment, installed in access networks and customers' premises, the DC interface "A" of
which is also used by equipment requiring a DC supply source;
- any type of ICT equipment powered by DC, used in the fixed and mobile networks installed in different
locations such as buildings, shelters, street cabinets, outdoor installations.
Disturbances on the power supply interface "A" relating to the continuous wave phenomena below 20 kHz are covered
within the present document.
The present document does not cover safety requirements, they are covered by relevant safety standards.
The present document does not cover EMC requirements, they are covered by relevant EMC standards.
NOTE: Annex B gives guidance on -60 VDC supply systems.

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IEC 60068-3-3:2019 applies primarily to electro-technical equipment but its application can be extended to other equipment and to components. In addition, if some type of analysis is always performed when making a seismic qualification, for example for the choice of the representative sample to be tested or for the extension of the seismic qualification from the tested specimen to similar specimens, the verification of the performance of an equipment by analysis or by a combination of testing and analysis can be acceptable but is outside the scope of this document, which is restricted to verification based entirely upon data from dynamic testing. This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the main aim of this revision is to connect the testing level to the seismic activity level of the zone where the equipment could be installed; - a standard shape for the required response spectrum is also given for the general seismic class for which the seismic environment is either not known or is imprecisely known; - Clauses 11 to 15 were renumbered and some adjustments were made as their content is very general and the requirements can be applied both to the general seismic class and to the specific seismic class; - the word “envelope” is replaced with “dominance” and “to envelop” with “to dominate” in order to provide a more precise meaning from a mathematical point of view.

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