IEC 62567:2013

IEC 62567 ®
Edition 1.0 2013-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Overhead lines – Methods for testing self-damping characteristics of conductors

Lignes électriques aériennes – Méthodes d'essai des caractéristiques d'auto-
amortissement des conducteurs
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IEC 62567 ®
Edition 1.0 2013-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Overhead lines – Methods for testing self-damping characteristics of

conductors
Lignes électriques aériennes – Méthodes d'essai des caractéristiques d'auto-

amortissement des conducteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX W
ICS 29.060; 29.240.20 ISBN 978-2-8322-1056-7

– 2 – 62567 © IEC:2013
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols and units . 8
5 Test span arrangements . 8
5.1 General . 8
5.2 Span terminations . 9
5.3 Shaker and vibration control system . 10
5.4 Location of the shaker . 12
5.5 Connection between the shaker and the conductor under test . 12
5.5.1 General . 12
5.5.2 Rigid connection . 13
5.5.3 Flexible connection . 14
5.6 Transducers and measuring devices . 14
5.6.1 Type of transducers . 14
5.6.2 Transducer accuracy . 15
6 Conductor conditioning . 16
6.1 General . 16
6.2 Clamping . 16
6.3 Creep . 16
6.4 Running-in . 16
7 Extraneous loss sources . 16
8 Test procedures . 17
8.1 Determination of span resonance . 17
8.2 Power Method . 18
8.3 ISWR Method . 20
8.4 Decay method . 22
8.5 Comparison between the test methods . 24
8.6 Data presentation . 25
Annex A (normative) Recommended test parameters . 27
Annex B (informative) Reporting recommendations . 28
Annex C (informative) Correction for aerodynamic damping . 31
Annex D (informative) Correction of phase shift between transducers . 33
Bibliography . 34

Figure 1 – Test span for conductor self-damping measurements . 9
Figure 2 – Rigid clamp . 10
Figure 3 – Electro-dynamic shaker . 11
Figure 4 – Layout of a test stand for conductor self-damping measurements . 12
Figure 5 – Example of rigid connection . 13
Figure 6 – Example of flexible connection . 14
Figure 7 – Miniature accelerometer . 15

62567 © IEC:2013 – 3 –
Figure 8 – Resonant condition detected by the acceleration and force signals . 18
Figure 9 – Fuse wire system disconnecting a shaker from a test span; this double
exposure shows the mechanism both closed and open. . 23
Figure 10 – A decay trace . 24
Figure B.1 – Example of conductor power dissipation characteristics . 29
Figure B.2 – Example of conductor power dissipation characteristics . 30

Table 1 – Comparison of laboratory methods . 25
Table 2 – Comparison of Conductor Self-damping Empirical Parameters . 26
Table C.1 – Coefficients to be used with equation C-3 . 32

– 4 – 62567 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OVERHEAD LINES – METHODS FOR TESTING SELF-DAMPING
CHARACTERISTICS OF CONDUCTORS
FOREWORD
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