IEC/IEEE 62582-3:2012

IEC/IEEE 62582-3
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –
Electrical equipment condition monitoring methods –
Part 3: Elongation at break
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Méthodes de surveillance de l’état des matériels
électriques –
Partie 3: Allongement à la rupture

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IEC/IEEE 62582-3
Edition 1.0 2012-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear power plants – Instrumentation and control important to safety –

Electrical equipment condition monitoring methods –

Part 3: Elongation at break
Centrales nucléaires de puissance – Instrumentation et contrôle-commande

importants pour la sûreté – Méthodes de surveillance de l’état des matériels

électriques –
Partie 3: Allongement à la rupture

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 27.120.20 ISBN 978-2-83220-424-5

– 2 – 62582-3 © IEC/IEEE:2012
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope and object . 8
2 Terms and definitions . 8
3 General description . 9
4 Applicability and reproducibility . 9
5 Measurement procedure . 9
5.1 Stabilisation of the polymeric materials . 9
5.2 Sampling . 9
5.2.1 General . 9
5.2.2 Sample requirements . 10
5.3 Specimen preparation . 10
5.3.1 General . 10
5.3.2 Dumb-bell specimens . 11
5.3.3 Tubular specimens . 11
5.3.4 O-ring specimens . 11
5.4 Instrumentation . 11
5.4.1 Tensile test machine . 11
5.4.2 Calibration . 11
5.4.3 Use of extensometers . 11
5.5 Tensile elongation measurement method. 12
5.5.1 Conditioning . 12
5.5.2 Dimensions of test specimens . 12
5.5.3 Clamping . 12
5.5.4 Testing speed . 12
5.5.5 Recording data . 13
5.5.6 Calculation of results . 13
5.6 Measurement report . 14
Annex A (informative) Shape and dimensions of test specimens . 15
Annex B (informative) Preparation of test specimens from cable samples . 18
Annex C (informative) Typical load versus elongation curves . 20
Annex D (normative) Dies for cutting dumb-bell specimens . 22
Annex E (informative) Example of a measurement report from tensile elongation
measurements . 23
Bibliography . 24

Figure A.1 – Shape of dumb-bell specimens . 15
Figure A.2 – Fitting end tabs to tubular specimens . 16
Figure A.3 – Fitting soft inserts to tubular specimens . 17
Figure A.4 – Mounting of O-ring specimens in the test machine . 17
Figure C.1 – Typical load-elongation curves . 20
Figure C.2 – Typical load-time curve with a slipping specimen . 21
Figure D.1 – Suitable cutters for dumb-bell specimens . 22

62582-3 © IEC/IEEE:2012 – 3 –
Table 1 – Testing speeds for elongation measurements . 12
Table A.1 – Recommended dimensions for dumb-bell specimens . 15

– 4 – 62582-3 © IEC/IEEE:2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY –
ELECTRICAL EQUIPMENT CONDITION MONITORING METHODS –

Part 3: Elongation at break
FOREWORD
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