EN 60068-2-18:2001
(Main)Environmental testing - Part 2-18: Tests - Tests R and guidance: Water
Environmental testing - Part 2-18: Tests - Tests R and guidance: Water
Provides tests for electrotechnical products which, during transportation, storage or in service, may be subjected to falling drops, impacting water or immersion.
Umweltprüfungen - Teil 2-18: Prüfungen, Prüfung R und Leitfaden: Wasser
Essais d'environnement - Partie 2-18: Essais - Essais R et guide: Eau
Indique les méthodes d'essais applicables aux produits électrotechniques qui, pendant leur transport, leur stockage ou alors qu'ils sont en service, peuvent être soumis à des chutes d'eau, à des projections d'eau ou à une immersion.
Environmental testing - Part 2-18: Tests - Tests R and guidance: Water
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2002
Environmental testing - Part 2-18: Tests - Tests R and guidance: Water
Environmental testing -- Part 2-18: Tests - Tests R and guidance: Water
Umweltprüfungen -- Teil 2-18: Prüfungen, Prüfung R und Leitfaden: Wasser
Essais d'environnement -- Partie 2-18: Essais - Essais R et guide: Eau
Ta slovenski standard je istoveten z: EN 60068-2-18:2001
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 60068-2-18
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2001
ICS 19.040
English version
Environmental testing
Part 2-18: Tests - Tests R and guidance: Water
(IEC 60068-2-18:2000)
Essais d'environnement Umweltprüfungen
Partie 2-18: Essais - Essais R et guide: Teil 2-18: Prüfungen, Prüfung R und
Eau Leitfaden: Wasser
(CEI 60068-2-18:2000) (IEC 60068-2-18:2000)
This European Standard was approved by CENELEC on 2000-11-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60068-2-18:2001 E
Foreword
The text of document 104/170/FDIS, future edition 2 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 was approved by CENELEC as EN 60068-2-18 on 2000-11-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2001-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B, C, D and E are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60068-2-18:2001 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 60068-2-18:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. Mai 1993
NORME CEI
INTERNATIONALE
IEC
60068-2-18
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2000-10
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Essais d’environnement –
Partie 2-18:
Essais – Essai R et guide: Eau
Environmental testing –
Part 2-18:
Tests – Test R and guidance: Water
CODE PRIX
W
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur
60068-2-18 IEC:2000 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION .7
Clause
1 Scope and object . 9
2 Normative references . 9
3 Definitions. 9
4 Survey of water tests. 11
4.1 General. 11
4.2 Description of Tests R: Water . 11
5 Test Ra: Falling drops . 13
5.1 Object. 13
5.2 Method Ra 1: Artificial rain . 13
5.3 Method Ra 2: Drip box . 19
6 Test Rb: Impacting water. 23
6.1 Object. 23
6.2 Method Rb 1: Oscillating tube and spray nozzle . 25
6.3 Method Rb 2: Water jet . 35
7 Test Rc: Immersion . 41
7.1 Object. 41
7.2 Method Rc 1: Water tank. 41
7.3 Method Rc 2: Pressurized water chamber. 45
Annex A (informative) Water characteristics to be considered when writing
the relevant specification .49
Annex B (informative) General guidance. 53
Annex C (informative) Guidance for Test Ra . 55
Annex D (informative) Guidance for Test Rb . 63
Annex E (informative) Guidance for Test Rc . 75
Figure 1 – Structuring of test methods and equivalence with the IP Code of IEC 60529 . 13
Figure 2 – Test Ra, definitions of angles and axes . 17
Figure C.1 – Test Ra 1, test apparatus and measurement set-up for drop sizes and
intensity for artificial rain method . 59
Figure C.2 – Test Ra 2, recommended test apparatus for the drip box method . 61
Figure D.1 – Test Rb 1.1, recommended test apparatus for the oscillating tube method. 67
Figure D.2 – Distribution of mean value of precipitation intensity in the oscillating tube area
for the above-specified measurement conditions. 69
Figure D.3 – Test Rb 1.2, recommended test apparatus for the spray nozzle method. 71
Figure D.4 – Standard test nozzle for the water jet method (hose nozzle) . 73
60068-2-18 © IEC:2000 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-18: Tests – Test R and guidance: Water
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The 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 second edition cancels and replaces the first edition published in 1989 and its
amendment 1 (1993). This second edition constitutes a technical revision.
It has the status of a basic safety publication in accordance with IEC Guide 104.
The text of this standard is based on the following documents:
FDIS Report on voting
104/170/FDIS 104/176/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 3.
Annexes A, B, C, D and E are for information only.
The committee has decided that the contents of this publication will remain unchanged until 2012.
At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60068-2-18 IEC:2000 – 7 –
INTRODUCTION
1)
It is the intention of this part of IEC 60068 to fulfil the function of a basic publication by
making water tests available to product committees.
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, clause 4 of IEC 60529.
This standard incorporates the majority of the most widely used tests, as well as making
available further methods and increasing the number of severities.
________
1)
IEC Guide 108:1994, The relationship between technical committees with horizontal functions and product
committees and the use of basic publications
60068-2-18 IEC:2000 – 9 –
ENVIRONMENTAL TESTING –
Part 2-18: Tests – Test R and guidance: Water
1 Scope and object
This part of IEC 60068 provides methods of test applicable to products which, during
transportation, storage or in service, may be subjected to falling drops, impacting water or
immersion. 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 dropfield or immersion in water.
These tests are not corrosion tests and should not be considered and used as such.
The effects of a large temperature difference between the water and the specimen, such as
increased water ingress resulting from pressure changes, as well as thermal shock, are not
simulated.
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-intensi
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