IEC_61109.pdf

IEC 61109 Ed.2/CDV IEC 2 36B/CDV 36B-MT10/Nuremberg3/60 CONTENTS FOREWORD.4 INTRODUCTION.5 1 Scope and object.7 2 Normative references.7 3 Definitions.8 4 Abbreviations.9 5 Identification.9 6 Environmental conditions.9 7 Transport,storage and installation.9 8 Hybrid insulators.9 9 Tolerances.10 10 Classification of tests.10 10.1 Design tests.10 10.2 Type tests.11 10.3 Sample tests.11 10.4 Routine tests.12 11 Design tests.12 11.1 Test specimens for IEC 62217.12 11.1.1 Tests on interfaces and connections of end fittings.12 11.1.2 Tracking and erosion test.13 11.1.3 Tests on core material.13 11.2 Product specific pre-stressing for IEC 62217.13 11.2.1 Sudden load release test.13 11.2.2 Thermal-mechanical test.13 11.3 Assembled core load-time tests.14 11.3.1 Test specimens.14 11.3.2 Mechanical load tests.14 12 Type tests.14 12.1 Electrical tests.15 12.2 Damage limit proof test and test of the tightness of the interface between end fittings and insulator housing.15 12.2.1 Test specimens.15 12.2.2 Performance of the test.15 12.2.3 Evaluation of the test.16 13 Sample tests.16 13.1 General rules.16 13.2 Verification of dimensions(E1+E2).17 13.3 Verification of the end fittings(E2).17 13.4 Verification of tightness of the interface between end fittings and insulator housing(E2)and of the specified mechanical load,SML(E1).17 13.4.1 Galvanizing test(E2).18 13.5 Re-testing procedure.18 14 Routine tests.18 14.1 Mechanical routine test.18 14.2 Visual examination.18 IEC 61109 Ed.2/CDV IEC 3 36B/CDV 36B-MT10/Nuremberg3/60 FIGURES.19 Annex A(informative)Principles of the damage limit,load coordination and testing for composite suspension and tension insulators.20 A.1 Introduction.20 A.2 Load-time behaviour and the damage limit.20 A.3 Service load coordination.21 A.4 Verification tests.22 Annex B(informative)Example of two possible devices for sudden release of load.23 B.1 Device 1(figure B.1).23 B.2 Device 2(figure B.2).23 Annex C(informative)Guidance on non standard mechanical stresses and dynamic mechanical loading of composite tension/suspension insulators.25 Annex D(informative)Bibliography.26 IEC 61109 Ed.2/CDV IEC 4 36B/CDV 36B-MT10/Nuremberg3/60 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C.OVERHEAD LINES WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V DEFINITIONS,TEST METHODS AND ACCEPTANCE CRITERIA FOREWORD 1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprising all national electrotechnical committees(IEC National Committees).The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,the IEC publishes International Standards.Their preparation is entrusted to technical committees;any IEC National Committee interested in the subject dealt with may participate in this preparatory work.International,governmental and non-governmental organizations liaising with the IEC also participate in this preparation.The IEC collaborates closely with the International Organization for Standardization(ISO)in accordance with conditions determined by agreement between the two organizations.2)The formal decisions or agreements of the IEC on technical matters express,as nearly as possible,an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees.3)The documents produced have the form of recommendations for international use and are published in the form of standards,technical specifications,technical reports or guides and they are accepted by the National Committees in that sense.4)In order to promote international unification,IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards.Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter.5)The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards.6)Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights.The IEC shall not be held responsible for identifying any or all such patent rights.International Standard IEC 61109 has been prepared by subcommittee 36B,of IEC technical committee 36:The text of this standard is based on the following documents:FDIS Report on voting 36B/XX/FDIS 36B/XX/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table.This publication has been drafted in accordance with the ISO/IEC Directives,Part 2.The committee has decided that the contents of this publication will remain unchanged until _.At this dat