IEC 60243-1:2013

Electric strength of insulating materials - Test methods - Part 1: Tests at power frequencies

IEC 60243-1:2013 provides test methods for the determination of short-time electric strength of solid insulating materials at power frequencies between 48 Hz and 62 Hz. This standard does not cover the testing of liquids and gases, although these are specified and used as impregnates or surrounding media for the solid insulating materials being tested. NOTE: Methods for the determination of breakdown voltages along the surfaces of solid insulating materials are included.

Rigidité diélectrique des matériaux isolants - Méthodes d'essai - Partie 1: Essais aux fréquences industrielles

La CEI 60243-1:2013 fournit les méthodes d'essai pour la détermination de la rigidité diélectrique de courte durée des matériaux isolants solides, aux fréquences industrielles comprises entre 48 Hz et 62 Hz. La présente norme ne couvre pas la manière d'effectuer l'essai des liquides ou des gaz bien que ceux-ci soient spécifiés et utilisés comme imprégnants ou comme milieu ambiant pour l'essai des matériaux isolants solides. NOTE: Les méthodes pour déterminer les tensions de claquage en surface des matériaux isolants solides sont indiquées.

General Information

• Status: Published
• Publication Date: 25-Mar-2013
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.99 - Other standards related to electricity and magnetism
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 112 - Evaluation and qualification of electrical insulating materials and systems
• Drafting Committee: WG 3 - TC 112/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 30-Apr-2013
• Completion Date: 26-Mar-2013

Relations

• Revises: IEC 60243-1:1998 - Electrical strength of insulating materials - Test methods - Part 1: Tests at power frequencies
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60243-1 ®
Edition 3.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric strength of insulating materials – Test methods –
Part 1: Tests at power frequencies

Rigidité diélectrique des matériaux isolants – Méthodes d'essai –
Partie 1: Essais aux fréquences industrielles

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IEC 60243-1 ®
Edition 3.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric strength of insulating materials – Test methods –

Part 1: Tests at power frequencies

Rigidité diélectrique des matériaux isolants – Méthodes d'essai –

Partie 1: Essais aux fréquences industrielles

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 17.220.99; 29.035.01 ISBN 978-2-83220-696-6

– 2 – 60243-1 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Significance of the test . 7
5 Electrodes and specimens . 8
5.1 General . 8
5.2 Tests perpendicular to the surface of non-laminated materials and normal to
laminate of laminated materials . 8
5.2.1 Boards and sheet materials, including pressboards, papers, fabrics
and films . 8
5.2.2 Tapes, films and narrow strips . 9
5.2.3 Flexible tubing and sleeving . 9
5.2.4 Rigid tubes (having an internal diameter up to and including 100 mm) . 9
5.2.5 Tubes and hollow cylinders (having an internal diameter greater than
100 mm) . 10
5.2.6 Cast and moulded materials . 10
5.2.7 Shaped solid pieces . 11
5.2.8 Varnishes . 11
5.2.9 Filling compounds . 11
5.3 Tests parallel to the surface of non-laminated materials and parallel to the
laminate of laminated materials . 11
5.3.1 General . 11
5.3.2 Parallel plate electrodes . 11
5.3.3 Taper pin electrodes . 12
5.3.4 Parallel cylindrical electrodes . 12
5.4 Test specimens . 12
5.5 Distance between electrodes . 12
6 Conditioning before tests . 13
7 Surrounding medium . 13
7.1 General . 13
7.2 Tests in air at elevated temperature . 13
7.3 Tests in liquids . 13
7.4 Tests in solid materials . 14
8 Electrical apparatus . 14
8.1 Voltage source . 14
8.2 Voltage measurement . 14
9 Procedure. 15
10 Mode of increase of voltage . 15
10.1 Short-time (rapid-rise) test . 15
10.2 20 s step-by-step test . 16
10.3 Slow rate-of-rise test (120 s. 240 s) . 16
10.4 60 s step-by-step test . 17
10.5 Very slow rate-of-rise test (300 s. 600 s) . 17
10.6 Proof tests . 17
11 Criterion of breakdown . 17
12 Number of tests . 18

60243-1 © IEC:2013 – 3 –
13 Report . 18
Annex A (informative) Treatment of experimental data . 25
Bibliography . 26

Figure 1 – Electrode arrangements for tests on boards and sheets perpendicular to the
surface . 19
Figure 2 – Typical example of electrode arrangement for tests on tapes perpendicular
to the surface (see 5.2.2) . 20
Figure 3 – Electrode arrangement for tests perpendicular to the surface on tubes and
cylinders with internal diameter greater than 100 mm. 20
Figure 4 – Electrode arrangement for tests on casting and moulding materials
(diameter of the spherical electrodes: d = (20 ± 0,1) mm) . 21
Figure 5 – Electrode arrangement for test on shaped insulating parts (see 5.2.7) . 21
Figure 6 – Electrode arrangement for tests parallel to the surface (and along the
laminae, if present) . 22
Figure 7 – Electrode arrangement for tests parallel to the surface (and along the
laminae if present) . 23
Figure 8 – Arrangement for tests parallel to the laminae for boards more than 15 mm
thick with parallel cylindrical electrodes (see 5.3.4) . 24

Table 1 – Increments of voltage increase (kilovolts, peak / ) . 16
– 4 – 60243-1 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC STRENGTH OF INSULATING MATERIALS –
TEST METHODS –
Part 1: Tests at power frequencies

FOREWORD
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