Table of Contents

FOREWORD<br>1 Scope and object<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols and abbreviations<br>5 Characteristics of the test current<br>6 Supply and return circuit conditions<br>7 Tests on insulator sets<br>&nbsp;&nbsp;&nbsp;7.1 General remarks<br>&nbsp;&nbsp;&nbsp;7.2 Test arrangement <br>&nbsp;&nbsp;&nbsp;7.3 Test current<br>&nbsp;&nbsp;&nbsp;7.4 Supply and return circuit conditions<br>&nbsp;&nbsp;&nbsp;7.5 Arc initiation <br>&nbsp;&nbsp;&nbsp;7.6 Ambient conditions <br>&nbsp;&nbsp;&nbsp;7.7 Test series and characteristics of the power arcs <br>8 Tests on short strings<br>&nbsp;&nbsp;&nbsp;8.1 General remark<br>&nbsp;&nbsp;&nbsp;8.2 Test arrangement <br>&nbsp;&nbsp;&nbsp;8.3 Test current<br>&nbsp;&nbsp;&nbsp;8.4 Supply and return circuit conditions<br>&nbsp;&nbsp;&nbsp;8.5 Arc initiation <br>&nbsp;&nbsp;&nbsp;8.6 Ambient conditions <br>&nbsp;&nbsp;&nbsp;8.7 Test series and characteristics of the power arcs <br>9 Test report<br>10 Evaluation of results<br>&nbsp;&nbsp;&nbsp;10.1 General remark<br>&nbsp;&nbsp;&nbsp;10.2 Visual examination <br>&nbsp;&nbsp;&nbsp;10.3 Porcelain or glass insulators<br>&nbsp;&nbsp;&nbsp;10.4 Composite insulators<br>&nbsp;&nbsp;&nbsp;10.5 Acceptance criteria<br>Annex A (normative) Examples of test arrangements and <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;practical methods of tower simulation <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(return circuit) <br>Annex B (normative) Determination of the r.m.s. value of <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the current<br>Annex C (informative) No-load voltage of the power source<br>Annex D (informative) Power arcs on insulator sets and their <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;true simulation by appropriate positioning <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;of fusible wires<br>Annex E (informative) Wind velocity during power arc tests<br>Annex F (informative) Variation of the fault current magnitude <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and reasons for the choice of the prescribed <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;test parameters <br>Annex G (informative) Recommendations for the test report <br>Annex H (informative) Sample of a power arc test report<br>Bibliography

Abstract

Applies to insulator strings and sets comprising string insulator units of ceramic material, glass or composite material for use on a.c. overhead lines and traction lines with a nominal voltage above 1000 V and a frequency between 15 Hz and 100 Hz.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 36