1、 IEC 62621 Edition 1.0 2011-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Fixed installations Electric traction Specific requirements for composite insulators used for overhead contact line systems Applications ferroviaires Installations fixes Traction lectrique Exigences parti
2、culires pour les isolateurs composites destins aux rseaux de lignes ariennes de contact IEC 62621:2011 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any for
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16、er des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62621 Edition 1.0 2011-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications Fixed installation
17、s Electric traction Specific requirements for composite insulators used for overhead contact line systems Applications ferroviaires Installations fixes Traction lectrique Exigences particulires pour les isolateurs composites destins aux rseaux de lignes ariennes de contact INTERNATIONAL ELECTROTECHN
18、ICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE U ICS 45.060 PRICE CODE CODE PRIX ISBN 978-2-88912-569-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 62621 IEC:2011 CONTENTS FOREWORD . 3 INTRODUCTION
19、. 5 1 Scope . 6 2 Normative references 6 3 Terms and definitions . 7 4 Characteristics of composite insulators for overhead contact line systems . 8 4.1 General . 8 4.2 Environmental conditions . 8 4.3 System voltages and frequencies . 9 4.4 Creepage distance . 9 4.5 Mechanical requirements . 10 4.6
20、 Corrosion 11 4.7 Fire safety . 11 4.8 Tracking and erosion . 11 4.9 Arc protection 11 4.10 In-running insulators 12 5 Testing . 12 5.1 General . 12 5.2 Design tests 12 5.3 Type tests . 14 5.3.1 General . 14 5.3.2 Electrical tests . 14 5.3.3 Mechanical tests 14 5.3.4 Verification of dimensions 14 5.
21、4 Sample tests . 15 5.5 Routine tests . 15 6 Identification . 15 7 Transport, storage, installation and maintenance . 15 Annex A (informative) Purchaser requirements . 16 Annex B (informative) Principles of the damage limit, load coordination and testing 17 Annex C (informative) Guidance on non-stan
22、dard mechanical stresses and dynamic mechanical loading . 21 Annex D (informative) Determination of the equivalent bending moment caused by combined loads . 23 Bibliography 26 Figure B.1 Load-time strength and damage limit of a core assembled with fittings . 18 Figure B.2 Graphical representation of
23、 the relationship of the damage limit to the mechanical characteristics and service loads of an insulator with a 16 mm diameter core 19 Figure B.3 Test loads . 20 Figure D.1 Combined loads applied to unbraced insulators . 24 Table 1 Definition of relevant mechanical characteristics according to insu
24、lator type . 10 Table 2 Design tests 13 62621 IEC:2011 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RAILWAY APPLICATIONS FIXED INSTALLATIONS ELECTRIC TRACTION SPECIFIC REQUIREMENTS FOR COMPOSITE INSULATORS USED FOR OVERHEAD CONTACT LINE SYSTEMS FOREWORD 1) The International Electrotechnical Commiss
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35、 may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62621 has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50151:2003. The text of
36、this standard is based on the following documents: FDIS Report on voting 9/1539/FDIS 9/1560/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. 4 62621 IEC:2011 This publication has been drafted in accordance with th
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38、 withdrawn, replaced by a revised edition, or amended. 62621 IEC:2011 5 INTRODUCTION This standard specifies requirements for the design and testing of composite insulators used on railway electric traction overhead contact line systems. Such insulators, which are installed at relatively low heights
39、 in the harsh environment of railway infrastructures, require specific considerations during design to reduce the effects of vandalism and environmental pollution from railway operations, especially when combined with a lack of natural washing. Insulators may be included in arrangements in tunnels a
40、nd over bridges or be in contact with traction unit pantographs where combined mechanical loading (tension, bending and torsion) may require special consideration. The standard is intended to allow the manufacturer to comply with local working practices, to ensure compatibility with existing electri
41、c traction overhead contact line systems, and provide an insulator which will give reliable service over its target life span with minimum maintenance. Insulators intended for overhead lines are predominately designed to resist tension and/or bending loads and are not designed to resist torsional lo
42、ads. Mitigating measures to reduce torsional loading are generally introduced by the overhead contact lines design engineer. Some combined loading (tension, compression and torsion) can be experienced and this is represented in the testing procedure specified in this document. The testing procedures
43、 given for railway applications in this standard are predominately referenced from IEC 61109, IEC 61952 and IEC 62217. 6 62621 IEC:2011 RAILWAY APPLICATIONS FIXED INSTALLATIONS ELECTRIC TRACTION SPECIFIC REQUIREMENTS FOR COMPOSITE INSULATORS USED FOR OVERHEAD CONTACT LINE SYSTEMS 1 Scope This Intern
44、ational Standard specifies characteristics for composite insulators of electric traction overhead contact line systems for railways, as defined in IEC 60913. Insulators specified in this standard are applied for electric traction supply voltages with a nominal voltage greater than 1 000 V for a.c. o
45、r a nominal voltage greater than 1 500 V for d.c Specific applications where high torsional loads can occur are outside the scope of this standard and particular tests are agreed between the supplier and customer to represent the critical loading arrangements. This International Standard applies to
46、composite insulators as defined in 3.1 below and not to other polymeric insulators. The provisions contained in this standard are intended for the design and construction of new electric traction overhead contact line systems using insulators, or when complete refurbishment of existing overhead cont
47、act line systems takes place. This standard provides the purchaser and manufacturer with a range of tests which are used to evaluate the suitability of an insulator product for a given railway environment. Additional tests may be specified by the client to measure the compliance of the insulator und
48、er particular operating conditions. The standard establishes the product characteristics, the test methods and acceptance criteria. The object of this standard is to stipulate the provisions for the design and provision of the service indicated by the manufacturer to the customer or informed buyer f
49、or application on the railway infrastructure. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60587, Electrical insulating materials used under severe ambient conditions
