IEC TR 62131-4:2011

Environmental conditions - Vibration and shock of electrotechnical equipment - Part 4: Equipment transported in road vehicles

IEC/TR 62131-4:2011(E) reviews the available dynamic data relating to electrotechnical equipment transported by road vehicles. The intent is that from all the available data an environmental description will be generated and compared to that set out in IEC 60721. For each of the sources identified the quality of the data is reviewed and checked for self consistency. The process used to undertake this check of data quality and that used to intrinsically categorize the various data sources is set out in IEC/TR 62131-1.

General Information

• Status: Published
• Publication Date: 23-Feb-2011
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 104 - Environmental conditions, classification and methods of test
• Drafting Committee: WG 15 - TC 104/WG 15
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jun-2011
• Completion Date: 24-Feb-2011

Standards Content (Sample)

IEC/TR 62131-4 ®
Edition 1.0 2011-02
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment –
Part 4: Equipment transported in road vehicles

IEC/TR 62131-4:2011(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
 IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
 Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
 Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
IEC/TR 62131-4 ®
Edition 1.0 2011-02
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment –
Part 4: Equipment transported in road vehicles

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XB
ICS 19.040 ISBN 978-2-88912-389-6

– 2 – TR 62131-4 © IEC:2011(E)
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Data source and quality . 7
3.1 SRETS road and test track measurements . 7
3.2 CEEES ‘round robin’ 10 tonne truck measurements . 8
3.3 Various vehicle measurements by Hoppe and Gerock . 9
3.4 Millbrook measurements on Landrover Defender . 10
3.5 Millbrook measurements on Ford transit van . 10
3.6 Millbrook measurements on Renault Magnum . 11
3.7 Supplementary data . 12
4 Intra data source comparison . 13
4.1 General remark . 13
4.2 SRETS road and test track measurements . 13
4.3 CEEES ‘round robin’ 10 tonne truck measurements . 14
4.4 Various vehicle measurements by Hoppe and Gerock . 14
4.5 Millbrook measurements on Landrover Defender, Ford Transit Van and
Renault Magnum . 15
4.6 Renault Trafic (1,9 tonne) and TRM 1000 (20 Tonne) . 15
4.7 Various US road vehicles circa 1970 and circa mid 1980’s . 15
5 Inter data source comparison . 15
6 Identified test severities . 17
7 Environmental description . 17
8 Comparison with IEC 60721 and IEC 60068 . 20
9 Recommendations . 24
Bibliography . 66

Figure 1 – Schematic of SRETS vehicles . 27
Figure 2 – Effective values of all runs from covert SRETS measurements . 28
Figure 3 – All PSD form covert SRETS measurements . 28
Figure 4 – Comparison of SRETS amplitudes in the 3 axis . 29
Figure 5 – Comparison of SRETS measurements made with driver’s knowledge . 29
Figure 6 – Comparison of SRETS PSDs of different vehicles (v1, v2,v3) and road
categories made with driver’s knowledge . 30
Figure 7 – Comparison of SRETS measurements made without driver’s knowledge
(covert) and with driver’s knowledge (overt) on different roads . 30
Figure 8 – Comparison of different SRETS vehicles at the load platform –
Measurements made with driver’s knowledge . 31
Figure 9 – Comparison of SRETS measurements with different road categories – Made
with driver’s knowledge . 31
Figure 10 – Comparison of vertical SRETS time and signal triggered data made without
driver’s knowledge . 32
Figure 12 – Power spectral density of SRETS time and signal triggered data made
without driver’s knowledge . 33
Figure 13 – Peak hold PSD of SRETS time and signal triggered data made without

driver’s knowledge . 33

TR 62131-4 © IEC:2011(E) – 3 –
Figure 14 – APD of the SRETS measured data made without driver’s knowledge . 34
Figure 15 – Fitting of SRETS APD with multiple gaussian distributions . 34
Figure 16 – Vertical SRS of SRETS measured amplitudes greater than 5 g – Made
without driver’s knowledge . 35
Figure 17 – Lateral SRS of SRETS measured amplitudes greater than 5 g – Made
without driver’s knowledge . 35
Figure 18 Vibration r.m.s. against time for CEEES analysis. 36
Figure 19 – Vibration r.m.s. against vehicle velocity for CEEES analysis . 36
Figure 20 – Acceleration peaks against vehicle velocity for CEEES analysis . 37
Figure 21 – Vibration PSD analysis from CEEES ‘round robin’ exercise . 37
Figure 22 – Shock SRS analysis from CEEES ‘round robin’ exercise. 38
Figure 23 – Vibration test severities from CEEES ‘round robin’ exercise . 38
Figure 24 – Composite vibration PSD of CEEES measurements . 39
Figure 25 – Composite vibration APD from CEEES measurements . 39
Figure 26 – Vibration PSD from degraded roads on CEEES measurements . 40
Figure 27 – Shocks from CEEES measurements . 40
Figure 28 – Typical vibration PSD from Hoppe and Gerock measurements . 41
Figure 29 – Envelope of vibration PSD from Hoppe and Gerock measurements . 43
Figure 30 – Number of shocks per 100 km FROM Hoppe and Gerock measurements . 43
Figure 31 – Vibration r.m.s. from Millbrook measurements on landrover . 44
Figure 32 – Shock peaks from Millbrook measurements on landrover . 44
Figure 33 – Vibration PSD from Millbrook measurements on landrover . 45
Figure 34 – Vibration r.m.s. from Millbrook measurements on transit van . 45
Figure 35 – Maximum PSD values FROM Millbrook measurements on transit van . 46
Figure 36 – Shock amplitudes from Millbrook measurements on transit van . 46
Figure 37 – Vibration r.m.s. from Millbrook measurements on Renault Magnum . 47
Figure 38 – Maximum PSD values from Millbrook measurements on Renault Magnum . 47
Figure 39 – Shock amplitudes from Millbrook measurements on Renault Magnum . 48
Figure 40 – Maximum PSD values from Millbrook measurements on Renault Magnum . 48
Figure 41 – Vibration PSD from GAM EG 13 measurements on Renault Traffic . 49
Figure 42 – Vibration PSD from GAM EG 13 measurements on RVI TRM 1000 . 50
Figure 43 – Vibration severities from Mil Std 810 (Foley) . 51
Figure 44 – Vibration severities from Mil Std 810 (Connon) . 51
Figure 45 – Data from ASTM 4728-91 . 52
Figure 46 – Data from ASTM D4278-95 . 52
Figure 47 – Data from EXACT DK 1 – 237 . 53
Figure 48 – Data from reference 15 . 53
Figure 49 – Data from ASTM D 4728-95 . 54
Figure 50 – Data from reference 16 . 54
Figure 51 – SRETS test severity from PSD . 55
Figure 52 – SRETS test severity from PSD . 55
Figure 53 – SRETS test severity from r.m.s. (including shocks) . 57
Figure 54 – SRETS test severity from r.m.s. (including shocks) . 57
Figure 55 – Test severities from UK defence standard . 58

– 4 – TR 62131-4 © IEC:2011(E)
Figure 56 – Test severities from NATO STANAG . 58
Figure 57 – Test severities from ASTM D 4728-95 . 59
Figure 58 – Test severity from ETA . 59
Figure 59 – Test severities from CEN and ISO. 60
Figure 60 – Test severities from ETS. 60
Figure 61 – IEC 60721-2-2:1997 [26] – Random vibration severity . 61
Figure 62 – IEC 60721-4-2:1997 – Random vibration severity . 61
Figure 63 – IEC 60721-3-2:1997 – Sinusoidal vibration severity . 62
Figure 64 – IEC 60721-4-2:1997 – Sinusoidal vibration severity . 62
Figure 65 – IEC 60721-3-2:1997 – Shock severity . 63
Figure 66 – IEC 60721-4-2:1997 – Shock severity . 63
Figure 67 – IEC 60721-4-2:1997 – Recommended repeated shock severity . 64
Figure 68 – Comparison of the effects of IEC 60721-2-2:1997 – Random and sinusoidal
vibration severities .
...