Environmental testing - Part 3-3: Supporting documentation and guidance - Seismic test methods for equipment (IEC 60068-3-3:2019)

This document applies primarily to electro-technical equipment but its application can be extended to other equipment and to components. In addition, if some type of analysis is always performed when making a seismic qualification, for example for the choice of the representative sample to be tested or for the extension of the seismic qualification from the tested specimen to similar specimens, the verification of the performance of an equipment by analysis or by a combination of testing and analysis can be acceptable but is outside the scope of this document, which is restricted to verification based entirely upon data from dynamic testing. This document deals solely with the seismic testing of a full-size equipment which can be tested on a vibration table. The seismic testing of an equipment is intended to demonstrate its ability to perform its required function during and/or after the time it is subjected to the stresses and displacements resulting from an earthquake. The object of this document is to present a range of methods of testing which, when specified by the relevant specification, can be applied to demonstrate the performance of equipment for which seismic testing is required with the main aim of achieving qualification.

Umgebungseinflüsse - Teil 3-3: Leitfaden - Seismische Prüfverfahren für Geräte (IEC 60068-3-3:2019)

Essais d'environnement - Partie 3-3: Guide - Méthodes d'essais sismiques applicables aux matériels (IEC 60068-3-3:2019)

L’IEC 60068-3-3:2019 s’applique principalement au matériel électrotechnique mais son application peut s’étendre à d’autres matériels et composants. Par ailleurs, si un certain type d’analyse est toujours effectuée lors de la réalisation d’une qualification sismique, par exemple pour choisir l’échantillon représentatif à soumettre à essai ou pour étendre la qualification sismique du spécimen soumis à essai à des spécimens similaires, la vérification des performances d’un matériel par l’analyse ou par une combinaison d’essais et d’analyses peut être acceptable mais elle n’entre pas dans le domaine d’application du présent document, qui se limite à la vérification uniquement fondée sur les données d’essais dynamiques. Cette deuxième édition annule et remplace la première édition parue en 1991. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - le principal objectif de la présente révision est d’adapter le niveau d’essai au niveau d’activité sismique de la zone où le matériel est susceptible d’être installé; - une forme normalisée du spectre de réponse spécifié est également fournie pour la classe sismique générale pour laquelle l’environnement sismique n’est pas connu ou l’est de manière imprécise; - les Articles 11 à 15 ont été renumérotés et plusieurs ajustements ont été effectués car le contenu de ces articles est très général et les exigences peuvent s’appliquer aussi bien à la classe sismique générale qu’à la classe sismique spécifique; - le terme «enveloppe» est remplacé par «dominance» et «envelopper» par «dominer» afin d’expliciter ces termes du point de vue mathématique.

Okoljsko preskušanje - 3-3. del: Podporna dokumentacija in navodilo - Seizmične preskusne metode za opremo (IEC 60068-3-3:2019)

Ta dokument se uporablja predvsem za elektrotehnično opremo, vendar ga je mogoče uporabljati tudi za drugo opremo in sestavne dele. Dodatno velja naslednje: če se pri pripravi seizmične kvalifikacije vedno izvaja neka analiza, na primer za izbiro reprezentativnega vzorca za preskus ali za razširitev seizmične kvalifikacije s preskušenega vzorca na podobne vzorce, je lahko sprejemljivo preverjanje delovanja opreme z analizo ali s kombinacijo preskušanja in analize, vendar je to zunaj področja uporabe tega dokumenta, ki je omejen na preverjanje na podlagi podatkov iz dinamičnega preskušanja. Ta dokument obravnava zgolj seizmično preskušanje opreme v polni velikosti, ki se lahko preskuša na vibracijski mizi. Seizmično preskušanje opreme je namenjeno izkazovanju njene zmožnosti za izvajanje potrebnih funkcij med in/ali po tem, ko je bila podvržena obremenitvam in premikom zaradi potresa. Namen tega dokumenta je predstaviti nabor metod za preskušanje, ki jih je, kadar tako določa ustrezna specifikacija, mogoče uporabiti za izkazovanje zmogljivosti opreme, za katero se zahteva seizmično preskušanje, katerega glavni cilj je doseganje kvalifikacije.

General Information

Status
Published
Public Enquiry End Date
31-Oct-2018
Publication Date
04-Nov-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Oct-2019
Due Date
28-Dec-2019
Completion Date
05-Nov-2019

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SLOVENSKI STANDARD
SIST EN IEC 60068-3-3:2019
01-december-2019
Nadomešča:
SIST EN 60068-3-3:2001
Okoljsko preskušanje - 3-3. del: Podporna dokumentacija in navodilo - Seizmične
preskusne metode za opremo (IEC 60068-3-3:2019)

Environmental testing - Part 3-3: Supporting documentation and guidance - Seismic test

methods for equipment (IEC 60068-3-3:2019)

Umgebungseinflüsse - Teil 3-3: Leitfaden - Seismische Prüfverfahren für Geräte (IEC

60068-3-3:2019)

Essais d'environnement - Partie 3-3: Guide - Méthodes d'essais sismiques applicables

aux matériels (IEC 60068-3-3:2019)
Ta slovenski standard je istoveten z: EN IEC 60068-3-3:2019
ICS:
19.040 Preskušanje v zvezi z Environmental testing
okoljem
SIST EN IEC 60068-3-3:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60068-3-3:2019
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SIST EN IEC 60068-3-3:2019
EUROPEAN STANDARD EN IEC 60068-3-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2019
ICS 19.040 Supersedes EN 60068-3-3:1993 and all of its
amendments and corrigenda (if any)
English Version
Environmental testing - Part 3-3: Supporting documentation and
guidance - Seismic test methods for equipment
(IEC 60068-3-3:2019)

Essais d'environnement - Partie 3-3: Documentation Umgebungseinflüsse - Teil 3-3: Unterstützende

d'accompagnement et recommandations - Méthodes Dokumentation und Leitfaden - Seismische Prüfverfahren

d'essais sismiques applicables aux matériels für Geräte
(IEC 60068-3-3:2019) (IEC 60068-3-3:2019)

This European Standard was approved by CENELEC on 2019-09-27. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60068-3-3:2019 E
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SIST EN IEC 60068-3-3:2019
EN IEC 60068-3-3:2019 (E)
European foreword

The text of document 104/835/FDIS, future edition 2 of IEC 60068-3-3, 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 IEC 60068-3-3:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2020-06-27

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-09-27

document have to be withdrawn

This document supersedes EN 60068-3-3:1993 and all of its amendments and corrigenda (if any).

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 60068-3-3:2019 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 60721-2-6:1990 NOTE Harmonized as HD 478.2.6 S1:1993 (not modified)
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SIST EN IEC 60068-3-3:2019
EN IEC 60068-3-3:2019 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where 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 60068-1 - Environmental testing - Part 1: General EN 60068-1 -
and guidance
IEC 60068-2-6 - Environmental testing - Part 2-6: Tests - EN 60068-2-6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2-47 - Environmental testing - Part 2-47: Test - EN 60068-2-47 -
Mounting of specimens for vibration,
impact and similar dynamic tests
IEC 60068-2-57 - Environmental testing - Part 2-57: Tests - EN 60068-2-57 -
Test Ff: Vibration - Time-history and sine-
beat method
IEC 60068-2-64 - Environmental testing - Part 2-64: Tests - EN 60068-2-64 -
Test Fh: Vibration, broadband random and
guidance
IEC 60068-2-81 - Environmental testing - Part 2-81: Tests - EN 60068-2-81 -
Test Ei: Shock - Shock response spectrum
synthesis
ISO 2041 - Vibration and shock - Vocabulary - -
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SIST EN IEC 60068-3-3:2019
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SIST EN IEC 60068-3-3:2019
IEC 60068-3-3
Edition 2.0 2019-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 3-3: Supporting documentation and guidance – Seismic test methods for
equipment
Essais d’environnement –
Partie 3-3: Documentation d’accompagnement et recommandations – Méthodes
d’essais sismiques applicables aux matériels
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-7097-4

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 IEC 60068-3-3:2019
– 2 – IEC 60068-3-3:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 9

4 General and qualification considerations ....................................................................... 14

4.1 General seismic class and specific seismic class .................................................. 14

4.2 Service conditions ................................................................................................. 14

4.3 Malfunction criteria ............................................................................................... 15

4.4 Qualification criteria .............................................................................................. 15

5 Testing procedures ........................................................................................................ 15

5.1 General ................................................................................................................. 15

5.2 Mounting ............................................................................................................... 15

5.3 Measurements ...................................................................................................... 15

5.3.1 Vibration measurements at the vibration table ............................................... 15

5.3.2 Vibration measurements on the equipment .................................................... 16

5.3.3 Functional monitoring of the equipment ......................................................... 16

5.4 Frequency range ................................................................................................... 16

6 Conditioning .................................................................................................................. 16

7 Test wave selection ....................................................................................................... 16

7.1 General ................................................................................................................. 16

7.2 Multifrequency waves............................................................................................ 16

7.3 Single-frequency waves ........................................................................................ 17

8 Test waves .................................................................................................................... 17

8.1 General ................................................................................................................. 17

8.1.1 Specification of test waves ............................................................................ 17

8.1.2 Simulation with a safety margin of the effects of an earthquake ..................... 17

8.2 Multifrequency wave testing .................................................................................. 18

8.2.1 General requirements .................................................................................... 18

8.2.2 Time-history test ............................................................................................ 18

8.2.3 Other multifrequency tests ............................................................................. 18

8.3 Single-frequency testing ....................................................................................... 19

8.3.1 General requirements .................................................................................... 19

8.3.2 Sine-sweep test ............................................................................................. 19

8.3.3 Sine-beat test ................................................................................................ 19

8.3.4 Continuous sine test ...................................................................................... 20

8.4 Other test wave forms ........................................................................................... 20

9 Testing conditions ......................................................................................................... 20

9.1 General ................................................................................................................. 20

9.2 Vibration response investigation ........................................................................... 21

9.3 Test methods ........................................................................................................ 21

9.3.1 Test method for equipment without critical frequencies .................................. 21

9.3.2 Test method for equipment with critical frequencies ....................................... 22

9.4 Selection of damping ............................................................................................ 22

9.5 S1-earthquake and S2-earthquake testing ............................................................ 23

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9.6 Specific application testing .................................................................................... 23

9.7 Assembly testing ................................................................................................... 23

9.8 Component testing ................................................................................................ 23

10 Single and multi-axis testing .......................................................................................... 24

10.1 General ................................................................................................................. 24

10.2 Single-axis testing ................................................................................................ 24

10.3 Biaxial testing ....................................................................................................... 24

10.3.1 General requirements .................................................................................... 24

10.3.2 Two horizontal axes ....................................................................................... 24

10.3.3 One horizontal axis and one vertical axis ....................................................... 24

10.4 Triaxial testing ...................................................................................................... 25

10.4.1 General ......................................................................................................... 25

10.4.2 Triaxial installation ......................................................................................... 25

10.4.3 Biaxial installation (one horizontal axis, one vertical axis) .............................. 26

11 Conditioning for the general seismic class ..................................................................... 26

11.1 Selection of test type ............................................................................................ 26

11.2 Test method .......................................................................................................... 26

12 Calculated amplitude test method for the general seismic class ..................................... 27

12.1 Application ............................................................................................................ 27

12.2 Testing conditions ................................................................................................. 27

12.2.1 General ......................................................................................................... 27

12.2.2 Performance level .......................................................................................... 27

12.2.3 Test wave selection ....................................................................................... 27

12.2.4 Damping ratio ................................................................................................ 27

12.2.5 Ground acceleration (a ) ............................................................................... 27

12.2.6 Superelevation factor (K) ............................................................................... 29

12.2.7 Direction factor (D) ........................................................................................ 29

12.2.8 Floor acceleration (a ) .................................................................................... 30

13 Testing parameters for the general seismic class .......................................................... 30

13.1 Duration of test ..................................................................................................... 30

13.2 Test acceleration (a ) ............................................................................................ 30

13.2.1 General ......................................................................................................... 30

13.2.2 Wave factor (α) .............................................................................................. 31

13.2.3 Geometric factor (G) ...................................................................................... 31

14 Required response spectrum for the general seismic class ............................................ 31

15 Testing procedures for the general seismic class ........................................................... 32

15.1 Vibration response investigation (VRI) .................................................................. 32

15.2 Types of test ......................................................................................................... 33

15.2.1 Sine-beat test ................................................................................................ 33

15.2.2 Sine-sweep test ............................................................................................. 33

15.2.3 Time-history test ............................................................................................ 33

15.2.4 Other test wave forms .................................................................................... 33

16 Conditioning for the specific seismic class ..................................................................... 33

17 Test wave selection for the specific seismic class .......................................................... 34

17.1 General ................................................................................................................. 34

17.2 Multifrequency waves............................................................................................ 34

17.3 Single-frequency waves ........................................................................................ 34

18 Test waves for the specific seismic class ....................................................................... 34

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SIST EN IEC 60068-3-3:2019
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18.1 General ................................................................................................................. 34

18.2 Single-frequency testing ....................................................................................... 34

18.2.1 General ......................................................................................................... 34

18.2.2 Sine-sweep test ............................................................................................. 34

18.2.3 Sine-beat test ................................................................................................ 34

18.2.4 Continuous sine test ...................................................................................... 35

18.3 Other test wave forms ........................................................................................... 35

19 Testing conditions for the specific seismic class ............................................................ 35

20 Single and multi-axis testing for the specific seismic class ............................................. 35

Annex A (informative) Flow charts for test selection ............................................................. 43

A.1 Selection of test type ............................................................................................ 43

A.2 General seismic class – Calculated amplitude test ................................................ 44

A.3 Specific seismic class – Single axis testing ........................................................... 45

A.4 Specific seismic class – Multi-axis testing ............................................................. 46

Bibliography .......................................................................................................................... 47

Figure 1 – Shape of a required response spectrum in generalized form (log-log scale)

(as recommended by IEC 60068-2-57) .................................................................................. 32

Figure 2 – Typical envelope response spectrum .................................................................... 35

Figure 3 – Types of response spectrum envelopes ................................................................ 36

Figure 4 – Multifrequency response spectrum with superimposed sine beats ........................ 37

Figure 5 – Sequence of five sine beats with five cycles ......................................................... 37

Figure 6 – Typical time history .............................................................................................. 38

Figure 7 – Continuous sine ................................................................................................... 39

Figure 8 – Biaxial table along an inclined plane .................................................................... 40

Figure 9 – Wave amplification factors ................................................................................... 41

Figure 10 – Vibration amplitudes for ground acceleration a with crossover frequencies

at 0,8 Hz and 1,6 Hz ............................................................................................................. 42

Figure A.1 – Selection of seismic class ................................................................................. 43

Figure A.2 – Calculated amplitude test flowchart ................................................................... 44

Figure A.3 – Single-axis testing flowchart ............................................................................. 45

Figure A.4 – Multi-axis testing flowchart ................................................................................ 46

Table 1 – Typical damping ratios (per cent of critical) ........................................................... 22

Table 2 – Selection of test type ............................................................................................. 26

Table 3 – Ground acceleration levels .................................................................................... 27

Table 4 – Correspondence between peak ground acceleration and some seismic

scales ................................................................................................................................... 28

Table 5 – Recommended superelevation factors (K) ............................................................. 29

Table 6 – Direction factors (D) .............................................................................................. 29

Table 7 – Wave factor ........................................................................................................... 31

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SIST EN IEC 60068-3-3:2019
IEC 60068-3-3:2019 © IEC 2019 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 3-3: Supporting documentation and guidance –
Seismic test methods for equipment
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 60068-3-3 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 1991. This edition

constitutes a technical revision.

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

edition:

a) the main aim of this revision is to connect the testing level to the seismic activity level of

the zone where the equipment could be installed;

b) a standard shape for the required response spectrum is also given for the general seismic

class for which the seismic environment is either not known or is imprecisely known;

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SIST EN IEC 60068-3-3:2019
– 6 – IEC 60068-3-3:2019 © IEC 2019

c) Clauses 11 to 15 were renumbered and some adjustments were made as their content is

very general and the requirements can be applied both to the general seismic class and to

the specific seismic class;

d) the word “envelope” is replaced with “dominance” and “to envelop” with “to dominate” in

order to provide a more precise meaning from a mathematical point of view.
The text of this International Standard is based on the following documents:
FDIS Report on voting
104/835/FDIS 104/841/RVD

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.

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

This International Standard is to be used in conjunction with IEC 60068-1.

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.
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SIST EN IEC 60068-3-3:2019
IEC 60068-3-3:2019 © IEC 2019 – 7 –
INTRODUCTION

Guidance is included in each of the two test methods referred to in this document but it is

specific to the test method. The guidance in this document is directed towards choosing the

appropriate test method and applying it to seismic testing.
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SIST EN IEC 60068-3-3:2019
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ENVIRONMENTAL TESTING –
Part 3-3: Supporting documentation and guidance –
Seismic test methods for equipment
1 Scope
This part of IEC 60068 ap
...

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