Environmental testing - Part 2-5: Tests - Test S: Simulated solar radiation at ground level and guidance for solar radiation testing and weathering

IEC 60068-2-5:2018 is now available as IEC 60068-2-5:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60068-2-5:2018 specifies the methods for testing equipment or components under simulated solar radiation conditions. This document is applicable to the equipment and components at the surface of the earth. This third edition cancels and replaces the second edition of published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the title of this document has been modified;
- the current thermal effect test method, specified as "Test method Sa" has been retained and the weathering test method specified as "Test method Sb" has been added.

Essais d’environnement – Partie 2-5: Essais – Essai S: Rayonnement solaire simulé au niveau du sol et recommandations pour les essais de rayonnement solaire et le vieillissement aux intempéries

L’IEC 60068-2-5:2018 spécifie les méthodes d’essai pour les équipements ou les composants soumis à des conditions de rayonnement solaire simulé.
Ce document est applicable aux équipements et aux composants qui se trouvent à la surface de la Terre.
La présente version bilingue (2018-10) correspond à la version anglaise monolingue publiée en 2018-04.
Cette troisième édition annule et remplace la deuxième édition parue en 2010. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- le titre du présent document a été modifié;
- la méthode d’essai existante relative aux effets thermiques, spécifiée en tant que "Méthode d’essai Sa" a été conservée et la méthode d’essai de vieillissement aux intempéries, spécifiée en tant que "Méthode d’essai Sb" a été ajoutée. La version française de cette norme n'a pas été soumise au vote.

General Information

Status
Published
Publication Date
05-Apr-2018
Current Stage
PPUB - Publication issued
Start Date
06-Apr-2018
Completion Date
06-Apr-2018
Ref Project

Buy Standard

Standard
IEC 60068-2-5:2018 - Environmental testing - Part 2-5: Tests - Test S: Simulated solar radiation at ground level and guidance for solar radiation testing and weathering
English and French language
49 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC 60068-2-5
Edition 3.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-5: Tests – Test S: Simulated solar radiation at ground level and guidance
for solar radiation testing and weathering
Essais d’environnement –
Partie 2-5: Essais – Essai S: Rayonnement solaire simulé au niveau du sol et
recommandations pour les essais de rayonnement solaire et le vieillissement
aux intempéries
IEC 60068-2-5:2018-04(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2018 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite

ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in

Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional

documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical

iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and

variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of

committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been

and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: sales@iec.ch.
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 21 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 16
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.
Recherche de publications IEC -
Glossaire IEC - std.iec.ch/glossary
webstore.iec.ch/advsearchform
67 000 entrées terminologiques électrotechniques, en anglais

La recherche avancée permet de trouver des publications IEC et en français, extraites des articles Termes et Définitions des

en utilisant différents critères (numéro de référence, texte, publications IEC parues depuis 2002. Plus certaines entrées

comité d’études,…). Elle donne aussi des informations sur les antérieures extraites des publications des CE 37, 77, 86 et

projets et les publications remplacées ou retirées. CISPR de l'IEC.

IEC Just Published - webstore.iec.ch/justpublished Service Clients - webstore.iec.ch/csc

Restez informé sur les nouvelles publications IEC. Just Si vous désirez nous donner des commentaires sur cette

Published détaille les nouvelles publications parues. publication ou si vous avez des questions contactez-nous:

Disponible en ligne et aussi une fois par mois par email. sales@iec.ch.
---------------------- Page: 2 ----------------------
IEC 60068-2-5
Edition 3.0 2018-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-5: Tests – Test S: Simulated solar radiation at ground level and guidance
for solar radiation testing and weathering
Essais d’environnement –
Partie 2-5: Essais – Essai S: Rayonnement solaire simulé au niveau du sol et
recommandations pour les essais de rayonnement solaire et le vieillissement
aux intempéries
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-6149-1

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60068-2-5:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 7

4 General remarks .............................................................................................................. 8

4.1 Overview................................................................................................................. 8

4.2 Irradiance of solar radiation .................................................................................... 8

4.3 Spectral irradiance of solar radiation ....................................................................... 8

4.4 Radiation source ..................................................................................................... 9

5 Test method Sa: thermal effect test ................................................................................. 9

5.1 Conditioning ............................................................................................................ 9

5.1.1 General ........................................................................................................... 9

5.1.2 Temperature .................................................................................................... 9

5.1.3 Humidity .......................................................................................................... 9

5.1.4 Ozone and other contamination gases ........................................................... 10

5.1.5 Surface contamination ................................................................................... 10

5.1.6 Mounting of test specimen(s) ......................................................................... 10

5.1.7 Test facility .................................................................................................... 10

5.1.8 Test apparatus .............................................................................................. 10

5.2 Initial measurements ............................................................................................. 11

5.3 Testing ................................................................................................................. 11

5.3.1 General ......................................................................................................... 11

5.3.2 Procedure Sa 1 – 24 h cycle, 8 h irradiation and 16 h darkness,

repeated as required ..................................................................................... 11

5.3.3 Procedure Sa 2 – 24 h cycle, 20 h irradiation and 4 h darkness,

repeated as required ..................................................................................... 11

5.3.4 Procedure Sa 3 – Continuous irradiation as required ..................................... 11

5.4 Final measurements .............................................................................................. 13

6 Test method Sb: Weathering test with or without wetting ............................................... 13

6.1 Test apparatus ...................................................................................................... 13

6.1.1 Laboratory radiation source ........................................................................... 13

6.1.2 Test chamber................................................................................................. 14

6.1.3 Temperature .................................................................................................. 14

6.1.4 Humidity ........................................................................................................ 15

6.1.5 Spray cycle .................................................................................................... 15

6.1.6 Mounting of test specimen(s) ......................................................................... 15

6.1.7 Ozone and other contaminating gases ........................................................... 15

6.1.8 Surface contamination ................................................................................... 15

6.2 Initial measurements ............................................................................................. 15

6.3 Testing ................................................................................................................. 15

6.3.1 General ......................................................................................................... 15

6.3.2 Test duration ................................................................................................. 16

6.3.3 Test procedure .............................................................................................. 16

6.3.4 Ancillary environmental conditions ................................................................. 16

6.4 Final measurements .............................................................................................. 16

---------------------- Page: 4 ----------------------
IEC 60068-2-5:2018 © IEC 2018 – 3 –

7 Information to be given in the relevant specification ....................................................... 17

8 Information to be given in the test report........................................................................ 17

Annex A (informative) Standard solar spectral irradiance .................................................... 18

Annex B (informative) Radiation source .............................................................................. 20

B.1 General ................................................................................................................. 20

B.2 Filters ................................................................................................................... 20

B.3 Uniformity of irradiance ......................................................................................... 20

Annex C (informative) Typical apparatus for weathering ..................................................... 21

Annex D (informative) Instrumentation ................................................................................ 23

D.1 General ................................................................................................................. 23

D.2 Measurement of irradiance .................................................................................... 23

D.3 Measurement of spectral irradiance ...................................................................... 23

D.4 Measurement of temperature ................................................................................ 23

D.5 Difference between insulated black panel and uninsulated black panel

thermometer ......................................................................................................... 23

Bibliography .......................................................................................................................... 24

Figure 1 – Global solar spectral irradiance at sea level ........................................................... 8

Figure 2 – Test procedures Sa 1, Sa 2 and Sa 3 ................................................................... 13

Figure C.1 – Example of test apparatus ................................................................................ 21

Figure C.2 – Example of test apparatus with flat array .......................................................... 22

Table 1 – Spectral irradiance .................................................................................................. 9

Table 2 – Minimum and maximum levels of the relative spectral irradiance ........................... 10

Table 3 – Relative spectral irradiance of xenon-arc lamp(s) with daylight filters .................... 14

Table 4 – Relative spectral irradiance for xenon-arc lamp(s) with window glass filters .......... 14

Table 5 – Exposure cycles .................................................................................................... 16

Table A.1 – Comparison of basic atmospheric conditions used for the solar spectrum

defined in ASTM G 177 and that defined in CIE 85:1989, Table 4 ......................................... 19

Table A.2 – Irradiance comparison for the ASTM G 177 solar spectrum and the

CIE 85:1989, Table 4, solar spectrum ................................................................................... 19

---------------------- Page: 5 ----------------------
– 4 – IEC 60068-2-5:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-5: Tests – Test S: Simulated solar radiation at ground level and
guidance for solar radiation testing and weathering
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60068-2-5 has been prepared by IEC technical committee 104:

Environmental conditions, classification and methods of test.

This bilingual version (2018-10) corresponds to the monolingual English version, published in

2018-04.

This third edition cancels and replaces the second edition of published in 2010. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
a) the title of this document has been modified;

b) the current thermal effect test method, specified as "Test method Sa" has been retained

and the weathering test method specified as "Test method Sb" has been added.
---------------------- Page: 6 ----------------------
IEC 60068-2-5:2018 © IEC 2018 – 5 –
The text of this International Standard is based on the following documents:
CDV Report on voting
104/735/CDV 104/789/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.
The French version of this standard has not been voted upon.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 60068 series, published under the general title Environmental

testing, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 7 ----------------------
– 6 – IEC 60068-2-5:2018 © IEC 2018
INTRODUCTION

This part of IEC 60068 describes methods of simulation designed to examine the effect of

solar radiation on equipment and components at the surface of the earth. The main

characteristics of the environment to be simulated are the spectral irradiance of solar

radiation, as observed at the earth's surface, and the intensity of received energy, in

combination with controlled temperature conditions. However, the combination of solar

radiation with other environments, for example temperature, humidity, water spray (to

simulate wetting) and air velocity, should be considered. Two different methods are described,

one aiming at the thermal effects, a second aiming at the weathering effects.
---------------------- Page: 8 ----------------------
IEC 60068-2-5:2018 © IEC 2018 – 7 –
ENVIRONMENTAL TESTING –
Part 2-5: Tests – Test S: Simulated solar radiation at ground level and
guidance for solar radiation testing and weathering
1 Scope

This part of IEC 60068-2 specifies the methods for testing equipment or components under

simulated solar radiation conditions.

This document is applicable to the equipment and components at the surface of the earth.

The purpose of testing is to investigate to what extent the equipment or components are

affected by simulated solar radiation in the presence of moisture to reproduce the weathering

effects (temperature, humidity and/or wetting) that occur when they are exposed in actual

end-use environments to daylight or to daylight filtered through window glass. This document

specifies two test methods, test method Sa: thermal effect test, and test method Sb:

weathering test.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-1, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Test B: Dry heat
3 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 60068-1 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
black standard temperature
insulated black panel temperature

characteristic value of the test specimen's(s') surface temperature measured by an insulated

black panel thermometer, consisting of a black painted stainless steel panel and a resistance

temperature sensor embedded in insulating material (white PVDF, polyvinylidene difluoride)

attached
Note 1 to entry: More details are described in ISO 4892-1.
---------------------- Page: 9 ----------------------
– 8 – IEC 60068-2-5:2018 © IEC 2018

Note 2 to entry: It is designed to approximate the maximum surface temperature of any material with thermal

insulating properties and for control in weathering test apparatus.
3.2
black panel temperature
uninsulated black panel temperature

characteristic value of the test specimen's(s') surface temperature measured by an

uninsulated black panel thermometer, consisting of a black painted stainless steel panel and a

resistance temperature sensor attached
Note 1 to entry: More details are described in ISO 4892-1.

Note 2 to entry: It is designed to approximate the maximum surface temperature of any material and for control in

weathering test apparatus.
4 General remarks
4.1 Overview

The effect of solar radiation on the test specimen(s) will depend on the level of irradiance, the

spectral irradiance, the location, the time of day and the sensitivity of the material of the test

specimen(s).
4.2 Irradiance of solar radiation

The irradiance at sea level is influenced by the solar constant and the attenuation and

scattering of solar radiation in the atmosphere. For test purposes, CIE 85:1989, Table 4 gives

a value of 1 090 W/m for the global solar radiation at the surface of the earth from the sun at

zenith; this value is based on a solar constant E = 1 367 W/m .
4.3 Spectral irradiance of solar radiation

The standard spectral irradiance of the global solar radiation specified for this test, in

accordance with the recommendations of CIE 85:1989, Table 4 (see Annex A), is given in

Figure 1 and in Table 1.
2 000
1 800
1 600
1 400
1 200
1 000
800
600
400
200
0,3 0,5 0,7 0,9 1,1 1,3 1,5 1,7 1,9 2,1 2,3 2,5
Wavelength (µm)
IEC
Figure 1 – Global solar spectral irradiance at sea level
–2 –1
Spectral irradiance (Wm µm )
---------------------- Page: 10 ----------------------
IEC 60068-2-5:2018 © IEC 2018 – 9 –
Table 1 – Spectral irradiance
Spectral region Ultra-violet B Ultra-violet A Visible Infra-red Total radiation
300 nm to 320 nm to 400 nm to 800 nm to 300 nm to
Bandwidth
320 nm 400 nm 800 nm 2 450 nm 2 450 nm
2 2 2 2 2
Irradiance 4,06 W/m 70,5 W/m 604,2 W/m 411,2 W/m 1 090 W/m
Proportion of
0,4 % 6,4 % 55,4 % 37,8 % 100 %
total radiation
NOTE This table is a condensed version of CIE 85:1989, Table 4.
Radiation shorter than 300 nm reaching the earth’s surface is insignificant
4.4 Radiation source

If the source of radiation used for the test does not meet the standard spectral distribution

given in Table 1, the exact spectral absorption data of the material and the exact spectral

irradiance of the alternative radiation source in the range from 300 nm to about 3 000 nm and

for the solid angle of 2π sr above the specimen surface shall be known or measured.

Detail of a radiation source is described in Annex B.
5 Test method Sa: thermal effect test
5.1 Conditioning
5.1.1 General

During the entire test, the irradiation, the temperature within the chamber, the humidity and

any other specified environmental conditions shall be maintained at the levels appropriate to

the particular test procedure specified in the relevant specification. The relevant specification

shall state which preconditioning requirements are to be applied.
Detail of instrumentation is described in Annex D.
5.1.2 Temperature

The temperature within the chamber during irradiation and darkness periods shall be

controlled in accordance with the procedure (Sa 1, Sa 2 or Sa 3) specified.

NOTE Additionally, an insulated black panel thermometer or an uninsulated black panel thermometer can be used

to measure the maximum surface temperature. This temperature can be influenced by ventilation.

5.1.3 Humidity

Different humidity conditions, particularly condensation, can markedly affect photochemical

degradation of materials, paints, plastics, etc. If applicable, the values given in

IEC 60068-2-78 should be used.

The relevant specification shall state the humidity and whether it is to be maintained during

a) the irradiation periods only;
b) the periods of darkness only;
c) the whole test duration.
---------------------- Page: 11 ----------------------
– 10 – IEC 60068-2-5:2018 © IEC 2018
5.1.4 Ozone and other contamination gases

Ozone, generated by short wavelength ultra-violet test sources, will normally be excluded

from the test chamber by the radiation filter(s) used to correct the spectral energy distribution.

As ozone and other contaminating gases can significantly affect the degradation processes of

certain materials, it is important to exclude these gases from the test chamber, unless

otherwise required by the relevant specification.
5.1.5 Surface contamination

Dust and other surface contamination may significantly change the absorption characteristics

of irradiated surfaces. Unless otherwise required, specimens should be tested in a clean

condition. However, if effects of surface contamination are to be assessed, the relevant

specification should include the necessary information on preparation of surfaces, etc.

5.1.6 Mounting of test specimen(s)

The specimen(s) to be tested shall be placed either on raised support, on a turntable or a

specified substrate of known thermal conductivity and thermal capacity within the chamber as

stated in the relevant specification, and so spaced from other specimen(s) as to avoid

shielding from the source of radiation or re-radiated heat. Temperature sensors should be

attached to specimen(s) as required.
5.1.7 Test facility
It shall
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.