IEC 60544-2:2012

IEC 60544-2 ®
Edition 3.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Determination of the effects of ionizing radiation
on insulating materials –
Part 2: Procedures for irradiation and test

Matériaux isolants électriques – détermination des effets des rayonnements
Ionisants sur les matériaux isolants –
Partie 2: Méthodes d'irradiation et d'essai

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IEC 60544-2 ®
Edition 3.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical insulating materials – Determination of the effects of ionizing radiation

on insulating materials –
Part 2: Procedures for irradiation and test

Matériaux isolants électriques – détermination des effets des rayonnements

Ionisants sur les matériaux isolants –

Partie 2: Méthodes d'irradiation et d'essai

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 17.240; 29.035.01 ISBN 978-2-83220-223-4

– 2 – 60544-2 © IEC:2012
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Irradiation . 9
3.1 Type of radiation and dosimetry . 9
3.2 Irradiation conditions . 10
3.3 Sample preparation . 10
3.4 Irradiation procedures . 10
3.4.1 Irradiation dose-rate control . 10
3.4.2 Irradiation temperature control . 10
3.4.3 Irradiation in air . 11
3.4.4 Irradiation in a medium other than air . 11
3.4.5 Irradiation in a vacuum . 11
3.4.6 Irradiation at high pressure . 12
3.4.7 Irradiation during mechanical stressing . 12
3.4.8 Irradiation during electrical stressing . 12
3.4.9 Combined irradiation procedures . 12
3.5 Post-irradiation effects . 12
3.6 Specified irradiation conditions . 12
4 Test . 12
4.1 General . 12
4.2 Test procedures . 13
4.3 Evaluation criteria . 13
4.3.1 End-point criteria . 13
4.3.2 Values of the absorbed dose . 14
4.4 Evaluation . 14
5 Report . 15
5.1 General . 15
5.2 Material . 15
5.3 Irradiation . 15
5.4 Test . 15
5.5 Results . 15
Annex A (informative) Examples of test reports . 16
Bibliography . 21

Figure A.1 – Change of mechanical properties as a function of absorbed dose for
magnetic coil insulation . 17
Figure A.2 – Breakdown voltage of insulating tape as a function of absorbed dose . 20

Table 1 – Critical properties and end-point criteria to be considered in evaluating the
classification of insulating materials in radiation environments . 14
Table A.1 – Example 1 – Magnetic coil insulation . 16
Table A.2 – Example 2 – Cable insulation . 18

60544-2 © IEC:2012 – 3 –
Table A.3 – Example 3 – Insulating tape . 19

– 4 – 60544-2 © IEC:2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSULATING MATERIALS –
DETERMINATION OF THE EFFECTS OF IONIZING
RADIATION ON INSULATING MATERIALS –

Part 2: Procedures for irradiation and test

FOREWORD
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International Standard IEC 60544-2 has been prepared by IEC technical committee 112:
Evaluation and qualification of electrical insulating materials and systems.
This third edition cancels and
...