IEC 62772-2016 Composite hollow core station post insulators for substations with a.c voltage greater than 1000 V and d.c voltage greater than 1500 V - Definiti.pdf

1、 IEC 62772 Edition 1.0 2016-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Composite hollow core station post insulators for substations with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V Definitions, test methods and acceptance criteria Isolateurs supports composites creux

2、 pour postes prsentant une tension alternative suprieure 1 000 V et une tension continue suprieure 1 500 V Dfinitions, mthodes dessai et critres dacceptation IEC 62772:2016-08(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise

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20、NTERNATIONAL STANDARD NORME INTERNATIONALE Composite hollow core station post insulators for substations with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V Definitions, test methods and acceptance criteria Isolateurs supports composites creux pour postes prsentant une tensi

21、on alternative suprieure 1 000 V et une tension continue suprieure 1 500 V Dfinitions, mthodes dessai et critres dacceptation INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.080.10 ISBN 978-2-8322-3601-7 Registered trademark of the International Electrotec

22、hnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 62772:2016 IEC 2016 CONTENTS FO

23、REWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references. 7 3 Terms and definitions 8 4 Identification and marking 12 5 Environmental conditions . 12 6 Information on transport, storage and installation . 12 7 Classification of tests . 12 7.1 General . 12 7.2 Design tests 13 7.3 Type tests . 13

24、7.4 Sample tests . 13 7.5 Routine tests . 13 8 Design tests 14 8.1 General . 14 8.2 Tests on interfaces and connections of end fittings 15 8.2.1 General . 15 8.2.2 Test specimens 15 8.2.3 Reference dry power frequency test . 15 8.2.4 Thermal mechanical pre-stressing test 15 8.2.5 Water immersion pre

25、-stressing test 15 8.2.6 Verification tests 15 8.3 Assembled core load tests . 16 8.3.1 Test for the verification of the maximum design cantilever load (MDCL) 16 8.3.2 Test for the verification of the maximum design torsion load (MDToL) . 16 8.3.3 Verification of the specified tension load (STL) . 1

26、7 8.4 Tests on shed and housing material . 18 8.4.1 General . 18 8.4.2 Tracking and erosion test . 18 8.4.3 Flammability test 18 8.5 Tests on the tube material . 18 8.5.1 General . 18 8.5.2 Dye penetration test . 18 8.5.3 Water diffusion test 18 9 Type tests . 18 9.1 Internal pressure test 18 9.2 Be

27、nding test 18 9.3 Specified tension load test, compression and buckling withstand load test 19 9.4 Electrical tests 19 9.5 Wet switching impulse withstand voltage . 19 10 Sample tests . 19 11 Routine tests . 19 11.1 General . 19 11.2 Routine seal leak rate test . 19 IEC 62772:2016 IEC 2016 3 11.3 Te

28、st procedure 19 11.4 Acceptance criteria . 19 12 Documentation 20 Annex A (informative) Water diffusion test 21 Bibliography . 22 Figure A.1 Example of sample preparation for water diffusion test . 21 Table 1 Required design and type tests 14 4 IEC 62772:2016 IEC 2016 INTERNATIONAL ELECTROTECHNICAL

29、COMMISSION _ COMPOSITE HOLLOW CORE STATION POST INSULATORS FOR SUBSTATIONS WITH A.C. VOLTAGE GREATER THAN 1 000 V AND D.C. VOLTAGE GREATER THAN 1 500 V DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for st

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39、 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 sh

40、all not be held responsible for identifying any or all such patent rights. International Standard IEC 62772 has been prepared by IEC technical committee 36: Insulators. The text of this standard is based on the following documents: FDIS Report on voting 36/386/FDIS 36/389/RVD Full information on the

41、 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. IEC 62772:2016 IEC 2016 5 The committee has decided that the contents of this publication will remain unch

42、anged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 6 IEC 62772:2016 IEC 2016 INTRODUCTION Composite hollow

43、core station post insulators consist of an insulating hollow core (tube), bearing the mechanical load protected by a polymeric housing, the load being transmitted to the core by end fittings. The hollow core is filled entirely with an insulating material. The core is made of resin impregnated fibres

44、. Composite hollow core station post insulators are typically applied as post insulators in substations. In order to perform the design tests, IEC 62217 is to be applied for materials and interfaces of the insulator. Some tests have been grouped together as “design tests“, to be performed only once

45、on insulators which satisfy the same design conditions. For all design tests on composite hollow core station post insulators, the common clauses defined in IEC 62217 are applied. As far as practical, the influence of time on the electrical and mechanical properties of the components (core material,

46、 housing, interfaces etc.) and of the complete composite hollow core station post insulator has been considered in specifying the design tests to ensure a satisfactory life-time under normally known stress conditions in service. This standard relates to IEC 61462, Composite hollow insulators Pressur

47、ized and unpressurized insulators for use in electrical equipment with rated voltage greater than 1 000 V Definitions, test methods, acceptance criteria and design recommendations, as well as IEC 62231, Composite station post insulators for substations with a.c. voltages greater than 1 000 V up to 2

48、45 kV Definitions, test methods and acceptance criteria. Tests and requirements described in IEC 62231 can be used although this standard has no voltage limit. The use of polymeric housing materials that show hydrophobicity and hydrophobicity transfer mechanism (HTM) is preferred for composite hollo

49、w core station post insulators. This is due to the fact that the influence of diameter can be significant for hydrophilic surfaces (see also IEC 60815-3). For instance silicone rubber is recognized as successful countermeasure against severe polluted service conditions. The ageing performance of the polymeric housing can be evaluated by the salt fog test standardized in IEC 62217. For the time being, no test is d