IEC 61462-2023原版完整文件.docx

IEC 61462:2023-09(en-fr)IEC 61462®Edition 2.02023-09INTERNATIONAL STANDARDNORME INTERNATIONALEComposite hollow insulators Pressurized and unpressurized insulators for use in electrical equipment with AC rated voltage greater than 1 000 V AC and D.C. voltage greater than 1500V Definitions, test methods, acceptance criteria and design recommendationsIsolateurs composites creux Isolateurs avec ou sans pression interne pour utilisation dans des appareillages électriques de tensions alternatives assignées supérieures à 1 000 V et de tensions continues supérieures à 1 500 V Définitions, méthodes dessai, critères dacceptation et recommandations de conceptionTHIS PUBLICATION IS COPYRIGHT PROTECTEDCopyright © 2023 IEC, Geneva, SwitzerlandAll rights reserved. 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Egalement appelé Vocabulaire Electrotechnique International (IEV) en ligne.IEC 61462® Edition 2.02023-09INTERNATIONAL STANDARDNORME INTERNATIONALEComposite hollow insulators Pressurized and unpressurized insulators for use in electrical equipment with AC rated voltage greater than 1 000 V AC and D.C. voltage greater than 1500V Definitions, test methods, acceptance criteria and design recommendationsIsolateurs composites creux Isolateurs avec ou sans pression interne pour utilisation dans des appareillages électriques de tensions alternatives assignées supérieures à 1 000 V et de tensions continues supérieures à 1 500 V Définitions, méthodes dessai, critères dacceptation et recommandations de conceptionINTERNATIONAL ELECTROTECHNICAL COMMISSIONCOMMISSION ELECTROTECHNIQUE INTERNATIONALEICS 29.080.10ISBN 978-2-8322-7403-3Warning! Make sure that you obtained this publication from an authorized distributor.Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.® Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique InternationaleCONTENTSFOREWORD5INTRODUCTION71 Scope82 Normative references93 Terms and definitions94 Relationships of mechanical loads134.1 Loads from outside the insulator134.2 Pressures135 Marking146 Classification of tests146.1 General146.2 Design tests146.3 Type tests166.4 Sample tests166.5 Routine tests167 Design tests177.1 General177.2 Tests on interfaces and connections of end fittings177.2.1 General177.2.2 Test specimen177.2.3 Reference disruptive discharge dry power frequency test177.2.4 Thermal-mechanical pre-stressing test177.2.5 Water immersion pre-stressing test187.2.6 Verification tests187.3 Tests on shed and housing material197.3.1 Hardness test197.3.2 Accelerated weathering test197.3.3 Tracking and erosion test 1000 h salt fog AC voltage test197.3.4 Flammability test197.3.5 Hydrophobicity transfer test197.4 Tests on the tube material197.4.1 General197.4.2 Porosity test (Dye penetration test)207.4.3 Water diffusion test207.5 Water diffusion test on core with housing208 Type tests (only mechanical tests)208.1 General208.2 Test specimens208.3 Preparation of the test specimen218.4 Internal pressure test228.4.1 General228.4.2 Test procedure228.4.3 Acceptance criteria238.5 Bending test238.5.1 General238.5.2 Test procedure238.5.3 Acceptance criteria249 Sample tests249.1 Selection and number of insulators249.2 Testing259.3 Verification of dimensions259.3.1 Test procedure259.3.2 Acceptance criteria259.4 Mechanical tests259.4.1 General259.4.2 Test procedure259.4.3 Acceptance criteria269.5 Galvanizing test269.6 Re-test procedure2610 Routine tests2710.1 General2710.2 Visual examination2710.3 Routine mechanical test2710.4 Routine pressure test2710.5 Routine tightness test2811 Documentation28Annex A (normative) Tolerances of form and position33Annex B (informative) General recommendations for design and construction36B.1 Guidance for design36B.2 Guidance for the maximum service pressure36B.3 Guidance on sample testing of tube material36B.4 Guidance for the temperature required by the equipment manufacturer37B.5 Guidance for the mechanical loads required by the equipment manufacturer37B.6 Summary of the tests37Annex C (informative) Principles of damage limit and use of reversible and irreversible strain caused by internal pressure and/or bending loads on composite hollow insulatortubes41C.1 Overview41C.2 Definition41C.3 Example of determining the strain tolerance41Annex D (informative) Principle sketch of hollow insulators design assembly44Annex E (informative) Type tests on tapered (conical) insulators46E.1 General46E.2 Minimum length on the most stressed cylindrical parts on shortened testspecimens46E.3 Internal pressure test47E.4 Bending test47E.5 References49Bibliography50Figure 1 Thermal-mechanical pre-stressing test Typical cycles29Figure 2 Thermal-mechanical pre-stressing test Typical test arrangement30Figure 3 Test arrangement for the leakage rate test31Figure 4 Examples of sealing systems for composite hollow insulators32 49 IEC 61462:2023 © IEC 2023Figure A.1 Parallelism, coaxiality and concentricity33Figure A.2 Angular deviation of fixing holes: Example 134Figure A.3 Angular deviation of fixing holes: Example 234Figure A.4 Tolerances according to standard drawing practice35Figure B.1 Relationship of bending loads40Figure B.2 Relationship of pressures40Figure C.1 Position of strain gauges for pressure load and bending load42Figure C.2 Strain/time curve, reversible elastic phase42Figure C.3 Strain/time curve, irreversible plastic phase, damage limit43Figure D.1 Interface description for insulator with housing made by modularassembly44Figure D.2 Interface description for insulator with housing made by injection moldingand overmolded end fitting45Figure E.1 Illustration of tapered insulators in bending47Figure E.2 Illustration of axial membrane stress along the insulator when the lengthof the cylindrical parts is changed48Table 1 Mechanical loads applied to the insulator13Table 2 Pressures applied to the insulator13Table 3 Tests to be carried out after design changes15Table 4 Sample sizes24Table 5 Choice of re-test procedure26Table B.1 Loads/stress and classification of tests38Table B.2 Example of pressure/bending values Practical relationship of the values39INTERNATIONAL ELECTROTECHNICAL COMMISSIONCOMPOSITE HOLLOW INSULATORS PRESSURIZED AND UNPRESSURIZED INSULATORS FOR USEIN ELECTRICAL EQUIPMENT WITH AC RATED VOLTAGE GREATER THAN 1 000 V AND DC VOLTAGE GREATER THAN 1 500 V DEFINITIONS, TEST METHODS, ACCEPTANCE CRITERIA AND DESIGN RECOMMENDATIONSFOREWORD1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). 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. 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 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 IEC National Committees.3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. 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IEC is not responsible for any services carried out by independent certification bodies.6) All users should ensure that they have the latest edition of this publication.7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication.9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.IEC 61462 has been prepared by IEC technical committee 36: Insulators. It is an International Standard.This new edition cancels and replaces the previous edition published in 2007. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition