SIST EN 60068-2-18:2017

Environmental testing - Part 2-18: Tests - Tests R and guidance: Water (IEC 60068-2-18:2017)

This part of IEC 60068 provides methods of test applicable to products which, during
transportation, storage or in service, can be subjected to falling water drops, impacting water,
immersion or high pressure water impact. The primary purpose of water tests is to verify the
ability of enclosures, covers and seals to maintain components and equipment in good
working order after and, when necessary, under a standardized drop field or immersion in
water.
These tests are not corrosion tests and cannot be considered and used as such.
Established water tests in other standards are not intended to simulate natural rainfall and
their quoted intensities are too high to be adopted for that purpose. Therefore, in addition to
the high-intensity severities, test R includes an artificial rain test based upon natural
conditions but not taking into account high wind speeds generally associated with natural rain.
Guidance is given on the applicability of the tests and the severities to be selected.

Umweltprüfungen - Teil 2-18: Prüfungen, Prüfung R und Leitfaden: Wasser (IEC 60068-2-18:2017)

Essais d'environnement - Partie 2-18: Essais - Essai R et guide: Eau (IEC 60068-2-18:2017)

NEW!IEC 60068-2-18:2017 est disponible sous forme de IEC 60068-2-18:2017 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L’IEC 60068-2-18:2017 spécifie les méthodes d’essai applicables aux produits qui, pendant leur transport, leur stockage, ou alors qu’ils sont en service, peuvent être soumis à des chutes de gouttes d'eau, à des projections d’eau, à une immersion ou à des projections d’eau à haute pression. Le but premier des essais d’eau est de vérifier l’aptitude des enveloppes, des couvercles et des joints d’étanchéité à maintenir les composants et les matériels en bon état de marche après et, si besoin, pendant un arrosage par des gouttes d’eau ou une immersion dans l’eau normalisée.
Ces essais ne sont pas des essais de corrosion et ne peuvent pas être considérés ou utilisés comme tels.
Les essais d’eau déjà établis dans d’autres normes ne sont pas destinés à simuler les chutes de pluie naturelles et leurs intensités correspondantes sont trop élevées pour être utilisées dans ce but. En conséquence, en plus des sévérités de forte intensité, l’essai R comprend un essai de pluie artificielle basé sur des conditions naturelles, mais sans tenir compte des grands vents qui sont généralement associés à la pluie naturelle.
Des préconisations sont données sur l’applicabilité des essais et sur les sévérités à choisir.
Cette troisième édition annule et remplace la deuxième édition parue en 2000. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a. ajout de la nouvelle méthode d'essai Rb 3.

Okoljsko preskušanje - 2-18. del: Preskusi - Preskus R in navodilo: Voda (IEC 60068-2-18:2017)

Ta del standarda IEC 60068 podaja preskusne metode za uporabo pri proizvodih, ki so lahko med prevozom, skladiščenjem ali uporabo izpostavljeni padajočim vodnim kapljam, vplivom vode, potopitvi ali vodnim curkom pod visokim tlakom. Osnovni namen preskusov z vodo je preverjanje, ali so ohišja, pokrovi in tesnila zmožni zagotoviti ustrezno delovno stanje sestavnih delov in opreme po (ter po potrebi pri) standardiziranem kapljičnem polju ali potopitvi v vodo.
Ti preskusi niso preskusi korozivnosti in jih ni mogoče obravnavati ali uporabljati kot take. Vzpostavljeni preskusi z vodo v drugih standardih niso namenjeni simulaciji naravnega dežja in njihove navedene intenzitete so previsoke za ta namen. Poleg zahtevnosti visoke intenzitete preskus R zaradi tega vključuje preskus z umetnim dežjem na podlagi naravnih pogojev, vendar ob neupoštevanju visokih hitrosti vetra, ki so običajno povezane z naravnim dežjem. Standard podaja smernice glede uporabnosti preskusov in izbire zahtevnosti.

General Information

• Status: Published
• Publication Date: 08-Aug-2017
• ICS: 19.040 - Environmental testing
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 21-Jun-2017
• Due Date: 26-Aug-2017
• Completion Date: 09-Aug-2017
• Ref Project: EN 60068-2-18:2017 - Environmental testing - Part 2-18: Tests – Test R and guidance: Water

Relations

• Revised: SIST EN 60068-2-18:2002 - Environmental testing -- Part 2-18: Tests - Tests R and guidance: Water
• Effective Date: 01-Dec-2015
• Replaces: SIST EN 60068-2-18:2002 - Environmental testing -- Part 2-18: Tests - Tests R and guidance: Water
• Effective Date: 20-Jun-2017
• Replaces: SIST EN 60068-2-18:2002 - Environmental testing -- Part 2-18: Tests - Tests R and guidance: Water
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60068-2-18:2017
01-september-2017
1DGRPHãþD
SIST EN 60068-2-18:2002
Okoljsko preskušanje - 2-18. del: Preskusi - Preskus R in navodilo: Voda (IEC
60068-2-18:2017)
Environmental testing - Part 2-18: Tests - Tests R and guidance: Water (IEC 60068-2-
18:2017)
Umweltprüfungen - Teil 2-18: Prüfungen, Prüfung R und Leitfaden: Wasser (IEC 60068-2
-18:2017)
Essais d'environnement - Partie 2-18: Essais - Essai R et guide: Eau (IEC 60068-2-
18:2017)
Ta slovenski standard je istoveten z: EN 60068-2-18:2017
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
SIST EN 60068-2-18:2017 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60068-2-18:2017

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SIST EN 60068-2-18:2017


EUROPEAN STANDARD EN 60068-2-18

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2017
ICS 19.040 Supersedes EN 60068-2-18:2001
English Version
Environmental testing -
Part 2-18: Tests - Test R and guidance: Water
(IEC 60068-2-18:2017)
Essais d'environnement -  Umgebungsprüfungen -
Partie 2-18: Essais - Essai R et guide: Eau Teil 2-18: Prüfungen, Prüfung R und Leitfaden: Wasser
(IEC 60068-2-18:2017) (IEC 60068-2-18:2017)
This European Standard was approved by CENELEC on 2017-04-14. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60068-2-18:2017 E

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SIST EN 60068-2-18:2017
EN 60068-2-18:2017
European foreword
The text of document 104/719/FDIS, future edition 3 of IEC 60068-2-18, prepared by
IEC/TC 104 "Environmental conditions, classification and methods of test" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 60068-2-18:2017.

The following dates are fixed:
(dop) 2018-01-14
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-04-14
standards conflicting with the
document have to be withdrawn

This document supersedes EN 60068-2-18:2001.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60068-2-18:2017 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60529 NOTE Harmonized as EN 60529.
2

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SIST EN 60068-2-18:2017




IEC 60068-2-18

®


Edition 3.0 2017-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Environmental testing –

Part 2-18: Tests – Test R and guidance: Water




Essais d’environnement –

Partie 2-18: Essais – Essai R et guide: Eau
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 19.040 ISBN 978-2-8322-4019-9



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

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SIST EN 60068-2-18:2017
– 2 – IEC 60068-2-18:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Survey of water tests . 9
4.1 General . 9
4.2 Description of tests R: water . 9
5 Test Ra: falling drops . 10
5.1 Object . 10
5.2 Method Ra 1: artificial rain . 10
5.2.1 General description of the test . 10
5.2.2 Severities . 11
5.2.3 Preconditioning . 11
5.2.4 Initial measurements . 11
5.2.5 Testing . 11
5.2.6 Recovery . 12
5.2.7 Final measurements . 12
5.2.8 Information to be given in the relevant specification . 12
5.3 Method Ra 2: drip box . 13
5.3.1 General description of the test . 13
5.3.2 Severities . 13
5.3.3 Preconditioning . 14
5.3.4 Initial measurements . 14
5.3.5 Testing . 14
5.3.6 Recovery . 14
5.3.7 Final measurements . 14
5.3.8 Information to be given in the relevant specification . 14
6 Test Rb: impacting water . 15
6.1 Object . 15
6.2 Method Rb 1: oscillating tube and spray nozzle . 15
6.2.1 General description of the test . 15
6.2.2 Method Rb 1.1: oscillating tube . 15
6.2.3 Method Rb 1.2: spray nozzle . 19
6.3 Method Rb 2: water jet . 21
6.3.1 General description of the test . 21
6.3.2 Severities . 21
6.3.3 Preconditioning . 22
6.3.4 Initial measurements . 22
6.3.5 Testing . 22
6.3.6 Recovery . 22
6.3.7 Final measurements . 23
6.3.8 Information to be given in the relevant specification . 23
6.4 Method Rb 3: fan jet . 23
6.4.1 General description of the test . 23
6.4.2 Severities . 24

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SIST EN 60068-2-18:2017
IEC 60068-2-18:2017 © IEC 2017 – 3 –
6.4.3 Preconditioning . 24
6.4.4 Initial measurements . 24
6.4.5 Testing . 24
6.4.6 Recovery . 24
6.4.7 Final measurements . 24
6.4.8 Information to be given in the relevant specification . 25
7 Test Rc: immersion . 25
7.1 Object . 25
7.2 Method Rc 1: water tank . 25
7.2.1 General description . 25
7.2.2 Severities . 25
7.2.3 Preconditioning . 26
7.2.4 Initial measurements . 26
7.2.5 Testing . 26
7.2.6 Recovery . 26
7.2.7 Final measurements . 26
7.2.8 Information to be given in the relevant specification . 26
7.3 Method Rc 2: pressurized water chamber . 27
7.3.1 General description of the test . 27
7.3.2 Severities . 27
7.3.3 Preconditioning . 27
7.3.4 Initial measurements . 27
7.3.5 Testing . 27
7.3.6 Recovery . 28
7.3.7 Final measurements . 28
7.3.8 Information to be given in the relevant specification . 28
Annex A (informative) Water characteristics to be considered when writing the
relevant specification . 29
A.1 General . 29
A.2 Purity . 29
A.2.1 General . 29
A.2.2 Effect on test specimen . 29
A.2.3 Effect on test apparatus . 29
A.2.4 Ingress of water into the specimen . 30
A.3 Water quality for tests R . 30
A.3.1 Test Ra: falling drops. 30
A.3.2 Test Rb: impacting water . 30
A.3.3 Test Rc: immersion . 30
Annex B (informative) General guidance . 31
B.1 General . 31
B.2 Factors affecting the test severity . 31
Annex C (informative) Guidance for test Ra . 32
C.1 General . 32
C.2 Example of test apparatus . 32
C.2.1 Method Ra 1: artificial rain . 32
C.2.2 Method Ra 2: drip box . 33
C.3 Verification of test apparatus . 34
C.3.1 Intensity . 34
C.3.2 Drop size . 34

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SIST EN 60068-2-18:2017
– 4 – IEC 60068-2-18:2017 © IEC 2017
C.3.3 Resistivity and pH value . 34
Annex D (informative) Guidance for test Rb . 36
D.1 General . 36
D.2 Example of test apparatus . 36
D.2.1 Method Rb 1: oscillating tube and spray nozzle . 36
D.2.2 Method Rb 2: water jet . 37
D.2.3 Method Rb 3: fan jet nozzle . 38
Annex E (informative) Guidance for test Rc. 45
E.1 General . 45
E.2 Example of test apparatus . 45
E.2.1 Method Rc 1: water tank . 45
E.2.2 Method Rc 2: pressurized water chamber . 45
E.3 Verification of test apparatus . 45
Bibliography . 46

Figure 1 – Structuring of test methods and equivalence with the IP Code of IEC 60529 . 10
Figure 2 – Test Ra, definitions of angles and axes . 12
Figure C.1 – Test Ra 1, test apparatus and measurement setup for drop sizes and
intensity for artificial rain method . 33
Figure C.2 – Test Ra 2, recommended test apparatus for the drip box method . 35
Figure D.1 – Test Rb 1.1, recommended test apparatus for the oscillating tube method . 37
Figure D.2 – Distribution of mean value of precipitation intensity in the oscillating tube
area . 39
Figure D.3 – Test Rb 1.2, recommended test apparatus for the spray nozzle method . 40
Figure D.4 – Standard test nozzle for the water jet method (hose nozzle) . 40
Figure D.5 – Standard test nozzle for the fan jet method . 41
Figure D.6 – Fan jet nozzle resulting dimensions of spraying hole for checking purpose . 41
Figure D.7 – Example of different quality achievements of the surface finish of the fan
jet nozzle . 42
Figure D.8 – Set-up for measuring the impact force of the water jet for determining the
protection against high-pressure and high-temperature water jets . 43
Figure D.9 – Impact force distribution . 43
Figure D.10 – Test setup for determining the protection against high-pressure and
high-temperature water jet for small enclosures . 44

Table 1 – Oscillating tube – Relationship of number of nozzles and total water flow to
tube radius . 17
Table A.1 – Typical characteristics of water with approximate values . 30

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SIST EN 60068-2-18:2017
IEC 60068-2-18:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ENVIRONMENTAL TESTING –

Part 2-18: Tests – Test R and guidance: Water

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 60068-2-18 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This third edition cancels and replaces the second edition published in 2000. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of the new test method Rb 3.

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SIST EN 60068-2-18:2017
– 6 – IEC 60068-2-18:2017 © IEC 2017
The text of this standard is based on the following documents:
FDIS Report on voting
104/719/FDIS 104/722/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication 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 publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.

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SIST EN 60068-2-18:2017
IEC 60068-2-18:2017 © IEC 2017 – 7 –
INTRODUCTION
A number of water tests are described in other IEC publications. Some of them are well
established, for example, the test for classification of the second characteristic numeral of the
IP Code, of IEC 60529.
This document incorporates the majority of the most widely used tests, as well as making
available further methods and increasing the number of severities.

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SIST EN 60068-2-18:2017
– 8 – IEC 60068-2-18:2017 © IEC 2017
ENVIRONMENTAL TESTING –

Part 2-18: Tests – Test R and guidance: Water



1 Scope
This part of IEC 60068 provides methods of test applicable to products which, during
transportation, storage or in service, can be subjected to falling water drops, impacting water,
immersion or high pressure water impact. The primary purpose of water tests is to verify the
ability of enclosures, covers and seals to maintain components and equipment in good
working order after and, when necessary, under a standardized drop field or immersion in
water.
These tests are not corrosion tests and cannot be considered and used as such.
Established water tests in other standards are not intended to simulate natural rainfall and
their quoted intensities are too high to be adopted for that purpose. Therefore, in addition to
the high-intensity severities, test R includes an artificial rain test based upon natural
conditions but not taking into account high wind speeds generally associated with natural rain.
Guidance is given on the applicability of the tests and the severities to be selected.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardisation 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
rain
precipitation in the form of water drops
Note 1 to entry: Both the amount that falls and the actual falling action of the water drops are often called rainfall.
3.2
drizzle
precipitation in the form of very small, numerous and uniformly dispersed water drops that
may appear to float while following air currents
3.3
raindrop
drop of water having a diameter greater than 0,5 mm falling through the atmosphere

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SIST EN 60068-2-18:2017
IEC 60068-2-18:2017 © IEC 2017 – 9 –
3.4
drizzledrop
drop of water having a diameter of 0,2 mm to 0,5 mm falling through the atmosphere
3.5
R
rainfall or drizzle intensity
amount that falls per unit of time
2
Note 1 to entry: Rainfall intensity (R) is given in millimetres per hour (mm/h) where 1 l/(m · h) equals 1 mm/h.
3.6
D
50
median volume diameter
diameter of a drop whose size is such that 50 % of the volume of water reaching the ground is
comprised of smaller (or larger) drops
Note 1 to entry: Median volume diameter can be calculated using the formula:
0,19
D = 1,21 R (mm)
50
where R is the rainfall intensity (see 3.5).
4 Survey of water tests
4.1 General
This survey indicates the general structure of the various tests included in this document.
The structuring of the different tests is given in Figure 1.
4.2 Description of tests R: water
The water tests are structured into three groups.
• Ra: "falling drops" which, in principle, is a test with artificial rain and a test simulating
falling drops from condensation or leakage.
• Rb: "impacting water" where water jets impinge upon the test specimen with a certain
force and may assume any angle towards the test specimen.
• Rc: "immersion" where the test specimen is immersed in wa
...