EN 60721-2-9:2014

SLOVENSKI STANDARD
01-julij-2014
Klasifikacija okoljskih pogojev - 2-9. del: Okoljski pogoji v naravi - Opredelitev
opisovanja okolja na podlagi izmerjenih podatkov o udarcih in tresljajih: med
hrambo, prevozom in uporabo
Classification of environmental conditions - Part 2-9: Environmental conditions appearing
in nature - Defining an environmental description from measured shock and vibration
data: Storage, transportation and in-use
Classification des conditions d’environnement - Partie 2-9: Conditions d’environnement
présentes dans la nature – Définition d’une description de l’environnement à partir des
données de chocs et de vibrations mesurées: Stockage, transport et utilisation
Ta slovenski standard je istoveten z: EN 60721-2-9:2014
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 60721-2-9

NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2014
ICS 19.040
English Version
Classification of environmental conditions - Part 2-9:
Environmental conditions appearing in nature - Measured shock
and vibration data - Storage, transportation and in-use
(IEC 60721-2-9:2014)
Classification des conditions d'environnement - Partie 2-9: Klassifizierung von Umgebungsbedingungen - Teil 2-9:
Conditions d'environnement présentes dans la nature - Natürliche Einflüsse - Beschreibung von
Données de chocs et de vibrations mesurées - Stockage, Umgebungsbedingungen aus gemessenen Stoß- und
transport et utilisation Schwingungsdaten - Lagerung, Transport und Im-Betrieb
(CEI 60721-2-9:2014) (IEC 60721-2-9:2014)
This European Standard was approved by CENELEC on 2014-04-10. 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 60721-2-9:2014 E
Foreword
The text of document 104/630/FDIS, future edition 1 of IEC 60721-2-9, 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 60721-2-9:2014.
The following dates are fixed:
(dop) 2015-01-10
• 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) 2017-04-10
standards conflicting with the
document have to be withdrawn
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 60721-2-9:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2 (Series) NOTE Harmonized as EN 60068-2 (Series).
IEC 60721-3 (Series) NOTE Harmonized as EN 60721-3 (Series).
IEC 60068-2-6:2007 NOTE Harmonized as EN 60068-2-6:2008.
IEC 60721-1 NOTE Harmonized as EN 60721-1.

IEC 60721-2-9 ®
Edition 1.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Classification of environmental conditions –

Part 2-9: Environmental conditions appearing in nature – Measured shock and

vibration data – Storage, transportation and in-use

Classification des conditions d’environnement –

Partie 2-9: Conditions d’environnement présentes dans la nature – Données de

chocs et de vibrations mesurées – Stockage, transport et utilisation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 19.040 ISBN 978-2-8322-1446-6

– 2 – IEC 60721-2-9:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope and object . 6
2 Normative references . 6
3 General . 6
3.1 Introductory remarks . 6
3.2 Storage . 7
3.3 Transportation . 7
3.3.1 Road . 7
3.3.2 Rail . 7
3.3.3 Air . 8
3.3.4 Sea . 8
3.4 In-use . 8
4 Shock and vibration data . 9
5 Description of the methods . 9
5.1 General . 9
5.2 ASD envelope method . 9
5.3 Normal tolerance limit method . 10
5.4 Product axis . 11
5.4.1 Known axis . 11
5.4.2 Unknown axis . 12
5.5 Factoring for variables and unknowns . 12
Annex A (informative) Worked example . 13
A.1 Envelope curve . 13
A.2 NTL curve calculation . 13
A.3 Processing of the envelope curve and NTL curve . 13
Annex B (informative) Method to smooth and envelop an environmental description
spectrum . 15
B.1 Original data . 15
B.2 Octave averaging . 15
B.3 Averaging method . 15
B.4 Standard slope curves . 16
B.5 Comparison of envelope and NTL curves . 17
Bibliography . 19

Figure A.1 – Comparison of curves 1 to 5 and the envelope curve 7 and 95/50 NTL
curve 6 . 14
Figure B.1 – 95/50 NTL envelope of data . 15
Figure B.2 – 95/50 NTL envelope of data . 16
Figure B.3 – 1/3 octave averaged with standard slopes . 17
Figure B.4 – Comparison of curves with increasing normal tolerance factors C . 18

Table 1 – Normal tolerance factors, C . 11
Table A.1 – Example of five hypothetical curves for random vibration . 13
Table A.2 – Calculation for the five hypothetical curves . 14

IEC 60721-2-9:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CLASSIFICATION OF ENVIRONMENTAL CONDITIONS –

Part 2-9: Environmental conditions appearing in nature –
Measured shock and vibration data –
Storage, transportation and in-use

FOREWORD
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International Standard IEC 60721-2-9 has been prepared by IEC technical committee 104:
Classification of environmental conditions.
The text of this standard is base
...