IEC/IEEE 62582-3:2024

IEC/IEEE 62582-3 ®
Edition 2.0 2024-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Nuclear power plants – Instrumentation and control important to safety –
Electrical equipment condition monitoring methods –
Part 3: Elongation at break
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IEC/IEEE 62582-3 ®
Edition 2.0 2024-07
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Nuclear power plants – Instrumentation and control important to safety –
Electrical equipment condition monitoring methods –
Part 3: Elongation at break
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.120.20 ISBN 978-2-8322-9486-4

– 2 – IEC/IEEE 62582-3:2024 RLV
© IEC/IEEE 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope and object . 10
2 Normative references . 10
3 Terms and definitions . 10
4 General description . 11
5 Applicability and reproducibility . 11
6 Measurement procedure . 12
6.1 Stabilisation of the polymeric materials . 12
6.2 Sampling. 12
6.2.1 General . 12
6.2.2 Sample requirements . 12
6.3 Specimen preparation . 13
6.3.1 General . 13
6.3.2 Dumb-bell specimens . 13
6.3.3 Tubular specimens . 13
6.3.4 O-ring specimens . 13
6.4 Instrumentation . 14
6.4.1 Tensile test machine . 14
6.4.2 Calibration . 14
6.4.3 Use of extensometers . 14
6.5 Tensile elongation measurement method . 14
6.5.1 Conditioning . 14
6.5.2 Dimensions of test specimens . 14
6.5.3 Clamping . 15
6.5.4 Testing speed . 15
6.5.5 Recording data . 15
6.5.6 Calculation of results . 16
6.6 Measurement report . 17
Annex A (informative) Shape and dimensions of test specimens . 18
A.1 Preparation of dumb-bell specimens . 18
A.2 Tubular specimens . 18
A.3 O-ring specimens . 20
Annex B (informative) Preparation of test specimens from cable samples . 21
B.1 General . 21
B.2 Preparation of specimens from large diameter cables . 21
B.3 Preparation of specimens from small diameter cables . 21
B.4 Preparation of test specimens from bonded material . 22
Annex C (informative) Typical load versus elongation curves . 23
Annex D (normative) Dies for cutting dumb-bell specimens . 25
Annex E (informative) Example of a measurement report from tensile elongation
measurements . 26
Bibliography . 27

Figure A.1 – Shape of dumb-bell specimens . 18

© IEC/IEEE 2024
Figure A.2 – Fitting end tabs to tubular specimens . 19
Figure A.3 – Fitting soft inserts to tubular specimens . 20
Figure A.4 – Mounting of O-ring specimens in the test machine . 20
Figure C.1 – Typical load-elongation curves . 23
Figure C.2 – Typical load-time curve with a slipping specimen . 24
Figure D.1 – Suitable cutters for dumb-bell specimens . 25

Table 1 – Testing speeds for elongation measurements . 15
Table A.1 – Recommended dimensions for dumb-bell specimens . 18

– 4 – IEC/IEEE 62582-3:2024 RLV
© IEC/IEEE 2024
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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