SIST EN 60721-2-3:2016

SLOVENSKI STANDARD
SIST EN 60721-2-3:2016
01-november-2016
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SIST HD 478.2.3 S1:2003
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Classification of environmental conditions - Part 2-3: Environmental conditions appearing
in nature - Air pressure (IEC 60721-2-3:2013)
Klassifizierung von Umweltbedingungen - Teil 2-3: Natürliche Einflüsse - Luftdruck (IEC
60721-2-3:2013)
Classification des conditions d'environnement - Partie 2-3: Conditions d'environnement
présentes dans la nature - Pression atmosphérique (IEC 60721-2-3:2013)
Ta slovenski standard je istoveten z: EN 60721-2-3:2014
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
SIST EN 60721-2-3:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60721-2-3:2016

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SIST EN 60721-2-3:2016


EUROPEAN STANDARD EN 60721-2-3

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2014
ICS 19.040 Supersedes HD 478.2.3 S1:1990
English Version
Classification of environmental conditions - Part 2-3:
Environmental conditions appearing in nature - Air pressure
(IEC 60721-2-3:2013)
Classification des conditions d'environnement -  Klassifizierung von Umgebungsbedingungen -
Partie 2-3: Conditions d'environnement présentes dans la Teil 2-3: Natürliche Umgebungsbedingungen - Luftdruck
nature - Pression atmosphérique (IEC 60721-2-3:2013)
(CEI 60721-2-3:2013)
This European Standard was approved by CENELEC on 2013-07-24. 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, 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
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60721-2-3:2014 E

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SIST EN 60721-2-3:2016
EN 60721-2-3:2014 - 2 -
Foreword
The text of document 104/611/FDIS, future edition 2 of IEC 60721-2-3, 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 60721-2-3:2014.

The following dates are fixed:
(dop) 2014-12-20
• 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) 2016-07-24
standards conflicting with the
document have to be withdrawn

This document supersedes HD 478.2.3 S1:1990.

EN 60721-2-3:2014 includes the following significant technical changes with respect to
HD 478.2.3 S1:1990:
– removal of figures for decreasing cooling efficiency for altitude;
– simplification of Table 1;
– additional formula for calculating air pressure from altitude.

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

Endorsement notice
The text of the International Standard IEC 60721-2-3:2013 was approved by CENELEC as a
European Standard without any modification.

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SIST EN 60721-2-3:2016
- 3 - EN 60721-2-3:2014
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu

Publication Year Title EN/HD Year
IEC 60721-1 - Classification of environmental conditions - EN 60721-1 -
Part 1: Environmental parameters and their
severities

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SIST EN 60721-2-3:2016

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SIST EN 60721-2-3:2016



IEC 60721-2-3

®


Edition 2.0 2013-06




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Classification of environmental conditions –

Part 2-3: Environmental conditions appearing in nature – Air pressure




Classification des conditions d'environnement –

Partie 2-3: Conditions d'environnement présentes dans la nature – Pression

atmosphérique















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX H


ICS 19.040 ISBN 978-2-83220-875-5



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 60721-2-3:2016
– 2 – 60721-2-3 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Air pressure effects . 5
4.1 General . 5
4.2 Air pressure lower than normal . 5
4.3 Air pressure higher than normal . 6
5 Values of air pressure . 6
Bibliography . 8

Table 1 – Normal air pressure related to altitudes above and below sea-level . 6

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SIST EN 60721-2-3:2016
60721-2-3 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –

Part 2-3: Environmental conditions appearing in nature –
Air pressure

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 Internationa
...