EN 60068-2-75:2014
(Main)Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
IEC 60068-2-75:2014 provides three standardized and coordinated test methods for determining the ability of a specimen to withstand specified severities of impact. It is used, in particular, to demonstrate an acceptable level of robustness when assessing the safety of a product and is primarily intended for the testing of electrotechnical items. It consists of the application to the specimen of a prescribed number of impacts defined by their impact energy and applied in the prescribed directions. This part of IEC 60068 covers energy levels ranging from 0,14 J (joules) to 50 J (joules). This second edition cancels and replaces the first edition, published in 1997, and constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: - reconsideration of some values in Tables 1 and 2. Although some values are no longer recommended, they have been retained as alternatives for historical consistency purposes. It has the status of a basic safety publication in accordance with IEC Guide 104.
Umgebungseinflüsse - Teil: 2-75: Prüfungen - Prüfung Eh: Hammerprüfungen
Essais d’environnement - Partie 2-75: Essais - Test Eh: Essais au marteau
L'IEC 60068-2-75:2014 fournit trois méthodes d'essai normalisées et coordonnées pour déterminer l'aptitude d'un spécimen à supporter des sévérités spécifiées d'impact. Elle est utilisée en particulier pour démontrer un niveau acceptable de robustesse mécanique pour l'évaluation de la sécurité d'un produit; elle est destinée, en premier lieu, à l'essai de produits électrotechniques. Elle consiste à appliquer au spécimen un nombre prescrit d'impacts définis par leur énergie et appliqués dans des directions spécifiées. La présente partie de l'IEC 60068 couvre les niveaux d'énergie allant de 0,14 J (joules) à 50 J (joules). Cette deuxième édition annule et remplace la première édition, parue en 1997, et constitue une révision technique. Cette édition inclut la modification technique significative suivante par rapport à l'édition précédente:br /> - réexamen de certaines valeurs figurant dans les Tableaux 1 et 2. Bien qu'elles ne soient plus recommandées, certaines valeurs ont été conservées comme alternatives dans un but de cohérence avec la pratique antérieure. Elle a le statut d'une publication fondamentale de sécurité, conformément au Guide 104 de l'IEC.
Okoljsko preskušanje - 2-75. del: Preskusi - Preskus Eh: Preskusi s kladivom (IEC 60068-2-75:2014)
V tem delu standarda IEC 60068 so podane tri standardizirane in koordinirane preskusne metode za določanje vzdržljivosti vzorca na določene stopnje udarca. Uporablja se predvsem za prikaz sprejemljive ravni robustnosti pri ocenjevanju varnosti izdelka in je prvenstveno namenjen preskušanju elektrotehničnih predmetov. Sestavljen je iz uporabe vzorca predpisanega števila udarcev, definiranih glede na silo udarca in uporabljenih v predpisanih smereh.
Ta del standarda IEC 60068 zajema ravni energije od 0,14 J (džulov) do 50 J (džulov). Za izvajanje teh preskusov se uporabljajo tri vrste preskusnih naprav. V dodatku C je podanih nekaj smernic v zvezi s tem.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Okoljsko preskušanje - 2-75. del: Preskusi - Preskus Eh: Preskusi s kladivom (IEC 60068-2-75:2014)Umgebungseinflüsse -- Teil 2-75: Prüfungen - Prüfung Eh: HammerprüfungenEssais d’environnement -- Partie 2-75: Essais - Essai Eh: Essais au marteauEnvironmental testing - Part 2-75: Tests - Test Eh: Hammer tests19.040Preskušanje v zvezi z okoljemEnvironmental testingICS:Ta slovenski standard je istoveten z:EN 60068-2-75:2014SIST EN 60068-2-75:2014en01-december-2014SIST EN 60068-2-75:2014SLOVENSKI
STANDARDSIST EN 60068-2-75:20011DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 60068-2-75
October 2014 ICS 19.040
Supersedes EN 60068-2-75:1997
English Version
Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests (IEC 60068-2-75:2014)
Essais d'environnement -
Partie 2-75: Essais - Test Eh: Essais au marteau (CEI 60068-2-75:2014)
Umgebungseinflüsse -
Teil: 2-75: Prüfungen - Prüfung Eh: Hammerprüfungen (IEC 60068-2-75:2014) This European Standard was approved by CENELEC on 2014-10-08. 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 60068-2-75:2014 E SIST EN 60068-2-75:2014
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-07-08 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-10-08
This document supersedes EN 60068-2-75:1997.
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 60068-2-75:2014 was approved by CENELEC as a European Standard without any modification. SIST EN 60068-2-75:2014
- 3 - EN 60068-2-75:2014 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 60068-1 -
Environmental testing -
Part 1: General and guidance EN 60068-1 -
IEC 60721-1 -
Classification of environmental
conditions -
Part 1: Environmental parameters
and their severities EN 60721-1 -
IEC Guide 104 -
The preparation of safety publications
and the use of basic safety publications and group safety publications - -
IEC Guide 108 -
Guidelines for ensuring the coherency of IEC publications - Application of horizontal standards - -
ISO 1052 -
Steels for general engineering purposes - -
ISO 2039-2 -
Plastics - Determination of hardness -
Part 2: Rockwell hardness EN ISO 2039-2 -
ISO 2041 -
Mechanical vibration, shock and condition monitoring - Vocabulary - -
ISO 2768-1 -
General tolerances -
Part 1: Tolerances for linear and angular dimensions without individual tolerance indications EN 22768-1 -
ISO 6508 Series
Metallic materials - Rockwell hardness
test EN ISO 6508 Series
IEC 60068-2-75 Edition 2.0 2014-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Environmental testing –
Part 2-75: Tests – Test Eh: Hammer tests
Essais d’environnement –
Partie 2-75: Essais – Test Eh: Essais au marteau INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 19.040 PRICE CODE CODE PRIX ISBN 978-2-8322-1842-6
BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SÉCURITÉ
– 2 – IEC 60068-2-75:2014 © IEC 2014 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions. 8 4 Provisions common to all hammer test methods . 8 4.1 Severities . 8 4.1.1 General . 8 4.1.2 Impact energy value . 8 4.1.3 Number of impacts . 9 4.2 Test apparatus . 9 4.2.1 Description . 9 4.2.2 Mounting . 10 4.3 Preconditioning . 10 4.4 Initial measurements . 10 4.5 Testing . 10 4.5.1 General . 10 4.5.2 Attitudes and impact locations . 11 4.5.3 Preparation of the specimen . 11 4.5.4 Operating mode and functional monitoring . 11 4.6 Recovery . 11 4.7 Final measurements . 11 4.8 Information to be given in the relevant specification . 11 5 Test Eha: Pendulum hammer . 12 5.1 Test apparatus . 12 5.1.1 General . 12 5.1.2 Test apparatus for severities not exceeding 1 J . 12 5.1.3 Test apparatus for severities of 2 J and above. 12 5.2 Height of fall . 12 5.3 Testing . 13 6 Test Ehb: Spring hammer . 13 6.1 Test apparatus . 13 6.2 Influence of earth's gravity . 14 6.3 Calibration . 14 7 Test Ehc: Vertical hammer . 14 7.1 Test apparatus . 14 7.2 Height of fall . 14 Annex A (normative)
Shapes of striking elements . 15 Annex B (normative)
Procedure for the calibration of spring hammers. 18 B.1 Principle of calibration . 18 B.2 Construction of the calibration device . 18 B.3 Method of calibration of the calibration device . 18 B.4 Use of the calibration device. 19 Annex C (informative)
Guidance notes. 25 C.1 When is an impact test appropriate? . 25 SIST EN 60068-2-75:2014
IEC 60068-2-75:2014 © IEC 2014 – 3 –
C.2 Choice of test apparatus. 25 C.3 Choice of energy level . 25 C.4 Information for testing . 26 Annex D (informative)
Example of pendulum hammer test apparatus . 27 Annex E (informative)
Example of spring hammer test apparatus . 30 Bibliography . 32
Figure 1 – Example sketch of a striking element . 10 Figure 2 – Derivation of measuring point . 13 Figure 3 – Shape of release head for 2 J . 14 Figure A.1 – Example of a striking element for ≤ 1 J . 15 Figure A.2 – Example of a striking element for 2 J . 15 Figure A.3 – Example of a striking element for 5 J . 16 Figure A.4 – Example of a striking element for 10 J . 16 Figure A.5 – Example of a striking element for 20 J . 17 Figure A.6 – Example of a striking element for 50 J . 17 Figure B.1 – Calibration device . 20 Figure B.2 – Pendulum "c" . 21 Figure B.3 – Steel spring of pendulum "c" . 21 Figure B.4 – Details of calibration device . 22 Figure B.5 – Arrangement for the calibration of the calibration device . 23 Figure B.6 – Division of scale plate "f" . 24 Figure D.1 – Test apparatus . 27 Figure D.2 – Striking element of the pendulum hammer for energies ≤ 1 J . 28 Figure D.3 – Mounting fixture . 28 Figure D.4 – Adapter for flush-type switches . 29 Figure D.5 – Adapter for lamp holders . 29 Figure E.1 – Spring hammer test apparatus . 31
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