IEC 62568:2015

Overhead lines - Method for fatigue testing of conductors

IEC 62568:2015 provides test procedures to measure the fatigue characteristics of conductor/clamp systems. For the purposes of this standard, clamps shall be of the metallic type only. Key words: Conductors, Fatigue, Fatigue test

Lignes aériennes - Méthode d'essai de fatigue des conducteurs

IEC 62568:2015 fournit des procédures d'essais pour mesurer les caractéristiques de fatigue de systèmes conducteur/pince. Pour les besoins de la présente norme, les pinces doivent être de type métallique uniquement. Mots-clés: conducteurs, fatigue, Essai de fatigue

General Information

• Status: Published
• Publication Date: 08-Jul-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.060.01 - Electrical wires and cables in general
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: TC 7 - Overhead electrical conductors
• Drafting Committee: PT 62568 - TC 7/PT 62568
• Current Stage: PPUB - Publication issued
• Start Date: 31-Jul-2015
• Completion Date: 09-Jul-2015

Standards Content (Sample)

IEC 62568 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Overhead lines – Method for fatigue testing of conductors

Lignes aériennes – Méthode d'essai de fatigue des conducteurs

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IEC 62568 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Overhead lines – Method for fatigue testing of conductors

Lignes aériennes – Méthode d'essai de fatigue des conducteurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060, 29.240.20 ISBN 978-2-8322-2778-7

– 2 – IEC 62568:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Terms and definitions . 6
3 Symbols and abbreviated terms . 7
4 Requirements . 7
5 Test method . 7
5.1 Test set-up . 7
5.1.1 General . 7
5.1.2 Clamp . 7
5.1.3 Length of bench . 7
5.1.4 Conductor tension . 7
5.1.5 Sinusoidal excitation . 8
5.1.6 Excitation frequency . 8
5.2 Test parameters for resonance type benches . 8
5.3 Termination of a test . 8
5.4 Number of tests . 8
6 Test results . 9
Annex A (informative) Fatigue testing of conductors . 10
A.1 Background. 10
A.2 Confirmation . 11
A.3 Present knowledge of fatigue endurance capability of conductors . 11
A.4 Important characteristics related to conductor fatigue . 11
A.5 Test details . 12
A.5.1 Typical test benches for fatigue tests of conductors . 12
A.5.2 Typical configuration recommended . 12
A.6 Failure detection . 12
A.7 Collection of data base results . 13
A.7.1 Simple analytical representation of fatigue phenomenon . 13
A.7.2 Idealized stress . 14
A.8 Use of results. 15
A.9 Type of clamps . 15
A.10 Performance comparison . 15
Bibliography . 16

Figure 1 – Schematic representation of a resonance-type test bench . 8
Figure A.1 – Schematic representation of a typical resonance fatigue test bench . 12
Figure A.2 – Conductor supported in a typical short metallic clamp . 13
Figure A.3 – Bending model of a conductor supported in a metallic clamp, cantilever
beam in a square face block . 13
Figure A.4 – Free loop amplitude y . 14
max
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OVERHEAD LINES – METHOD FOR FATIGUE
TESTING OF CONDUCTORS
FOREWORD
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International Standard IEC 62568
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