BS EN 61284-1998 Overhead lines - Requirements and tests for fittings《架空线 接头要求和试验》.pdf

1、BRITISH STANDARD BS EN 61284:1998 IEC 61284:1997 Incorporating Corrigendum No. 1 Overhead lines Requirements and tests for fittings The European Standard EN 61284:1997 has the status of a British Standard ICS 29.240.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61284

2、:1998 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1998 BSI 04 July 2002 ISBN 0 580 29334 3 National foreword This British Standard is the English langu

3、age version of EN 61284:1997, including Corrigendum September 1998. It is identical with IEC 61284:1997. It supersedes BS EN 61284:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead lines, which has the responsibility to: A list of

4、organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering

5、system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Corrrespondenc

6、e Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of its

7、elf confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and

8、promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 58, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendmen

9、ts issued since publication Amd. No. Date Comments 13778 Corrigendum No. 1 04 July 2002 Change to field glasses specification in 14.4 and replacement of Figure D.2BS EN 61284:1998 BSI 04 July 2002 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 61284 5ii blankEUROPEAN STAN

10、DARD NORME EUROPENNE EUROPISCHE NORM EN 61284 November 1997 ICS 29.240.20 Supersedes EN 61284:1995 Descriptors: Overhead lines, joints, insulators, fittings English version Overhead lines Requirements and tests for fittings (IEC 61284:1997) Lignes ariennes Exigences et essais pour le matriel dquipem

11、ent (CEI 61284:1997) Freileitungen Anforderungen und Prfungen fr Armaturen (IEC 61284:1997) This European Standard was approved by CENELEC on 1997-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the

12、 status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, Ger

13、man). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech R

14、epublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee f

15、r Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61284:1997 EEN 61284:1997 BSI 04 July 2002 2 Foreword The text of document 11/119/FDIS, future

16、 edition 2 of IEC 61284, prepared by IEC TC 11, Overhead lines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61284 on 1997-10-01. This European Standard supersedes EN 61284:1995. The following dates were fixed: Annexes designated “normative” are part of the body o

17、f the standard. Annexes designated “informative” are given for information only. In this standard, Annex A, Annex B, Annex C, Annex D, Annex E and Annex ZA are normative and Annex F, Annex G, Annex H, Annex I, and Annex J are informative. Annex ZA has been added by CENELEC. Endorsement notice The te

18、xt of the International Standard IEC 61284:1997 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 1S c o p e 5 2 Normative references 5 3 Definitions 5 4R e q u i r e m e n t s 7 4.1 General requirements 7 4.1.1 Design 7 4.1.2 Materials 8 4.1.3 Dimensi

19、ons and tolerances 8 4.1.4 Protection against corrosion 8 4.1.5 Marking 9 4.1.6 Instructions for assembly 9 4.2 Requirements for specific fittings 9 4.2.1 Insulator set fittings and earth wire fittings 9 4.2.2 Suspension clamps 10 4.2.3 Fittings for jointing, terminating and repairing conductor and

20、earth wire 10 4.2.4 Insulator protective fittings 11 5 Quality assurance 11 6 Classification of tests Type tests, sample tests, routine tests 11 6.1 Type tests 11 6.1.1 General 11 6.1.2 Application 11 6.2 Sample tests 11 6.2.1 General 11 6.2.2 Application 12 6.2.3 Sampling and acceptance criteria 12

21、 6.3 Routine tests 12 6.3.1 General 12 6.3.2 Application and acceptance criteria 12 7 Visual examination 12 8 Dimensional and material verification 14 9 Hot dip galvanizing 14 10 Non-destructive testing 14 11 Mechanical tests 15 11.1 Number of fittings to be tested 15 11.2 Test piece and attachments

22、 for mechanical damage and failure load tests, conductors used in the mechanical tests 15 11.3 Insulator set fittings and earth wire fittings 15 11.3.1 Mechanical damage and failureload test 15 11.3.2 Mechanical damage and failure load test of the attachment point used during erection 15 11.4 Suspen

23、sion clamps 16 11.4.1 Vertical damage load and failure load test 16 11.4.2 Slip test on standard clamps with a specified minimum and maximum slip load 16 11.4.3 Slip test on standard clamps with only specified minimum slip load 17 11.4.4 Slip test on controlled slippage clamps 17 11.4.5 Clamp bolt t

24、ightening test 18 11.5 Tension clamps, dead-end tension joints and mid-span tension joints 18 11.5.1 Tensile test 18 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-07-01 latest date by which the nation

25、al standards conflicting with the EN have to be withdrawn (dow) 1998-07-01EN 61284:1997 BSI 04 July 2002 3 Page 11.5.2Mechanical damage and failure load test 19 11.5.3 Mechanical damage and failure load test of the attachment point used during erection 19 11.5.4 Clamp bolt tightening test 19 11.6 Pa

26、rtial tension fittings 19 11.6.1 Partial tension fittings other than T connectors 20 11.6.2 T connectors 20 11.7 Repair sleeves 20 11.8 Insulator protective fittings 20 12 Magnetic losses test 20 12.1 General 20 12.2 Test procedure 21 13 Heat cycle tests 29 13.1 Purpose 29 13.2 Joints 29 13.2.1 Gene

27、ral 29 13.2.2 Service temperatures 29 13.2.3 Classification for test purposes 30 13.3 Test specimens 30 13.3.1 General 30 13.3.2 Multi-range connectors 30 13.3.3 Preparation 30 13.3.4 Data on test specimens 30 13.4 Test arrangements 31 13.4.1 Test conditions 31 13.4.2 Reference conductor 31 13.4.3 P

28、otential points 31 13.4.4 Installation of test loop 31 13.4.5 Measurements 31 13.5 Heat cycle test procedure 32 13.5.1 General 32 13.5.2 Joints of class A 33 13.5.3 Joints of class B 34 14 Corona and radio interference voltage (RIV) tests 34 14.1 Purpose 34 14.2 Description of test methods 34 14.3 G

29、eneral 35 14.4 Test circuit and instruments 36 14.5 Corona and RIV test procedures 36 14.6 Acceptance criteria 37 14.7 Test report 37 Page 14.8 Voltage method 37 14.8.1 Adjacent conductors in athree-phase system 37 14.8.2 Test set-up and dimensions 37 14.8.3 Critical variant 42 14.8.4 Distance from

30、wall (reflection plane) w 42 14.8.5 Minimum clearance from adjacent live components 42 14.8.6 Metallic wall 43 14.9 Voltage gradient method 43 14.9.1 Conductor voltage on three-phase system 43 14.9.2 Test set-up and dimensions 43 14.9.3 Test method 43 Annex A (normative) Typical joint types 45 Annex

31、 B (normative) Typical test circuit Class A joints 46 Annex C (normative) Typical test circuit Class B joints 47 Annex D (normative) Diagrammatic representation of heat cycle test sequence 48 Annex E (normative) Mathematical acceptance criterion 49 Annex F (informative) Examples of normative documen

32、ts recommended for fitting materials 50 Annex G (informative) Potential points 51 Annex H (informative) Test voltage calibration device 52 Annex I (informative) Example of sampling with inspection by attributes 55 Annex J (informative) Example of sampling with inspection by variables 56 Annex ZA (no

33、rmative) Normative references to international publications with their corresponding European publications 574 blankEN 61284:1997 BSI 04 July 2002 5 1 Scope This International Standard applies to fittings for overhead lines of nominal voltage above 45 kV. It may also be applied to fittings for overh

34、ead lines of lower nominal voltage and to similar fittings for substations. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication of this standard, the editio

35、ns indicated were valid. All normative documents are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain regi

36、sters of currently valid International Standards. IEC 60050(466):1990, International Electrotechnical Vocabulary (IEV) Chapter 466: Overhead lines. IEC 60060-1:1989, High-voltage test techniques Part 1: General definitions and test requirements. IEC 60120:1984, Dimensions of ball and socket coupling

37、s of string insulator units. IEC 60372:1984, Locking devices for ball and socket couplings of string insulator units Dimensions and tests. IEC 60471:1977, Dimensions of clevis and tongue couplings of string insulator units. IEC 60826:1991, Loading and strength of overhead transmission lines. IEC 610

38、89:1991, Round wire concentric lay overhead electrical stranded conductors. CISPR 16-1:1993, Specification for radio disturbance and immunity measuring apparatus and methods Part 1: Radio disturbance and immunity measuring apparatus. CISPR 18-2:1986, Radio interference characteristics of overhead po

39、wer lines and high-voltage equipment Part 2: Methods of measurement and procedure for determining limits. ISO 1461, Hot dip galvanized coatings on fabricated ferrous products Specifications. 1) ISO 9000-1:1994, Quality management and quality assurance standards Part 1: Guidelines for selection and u

40、se. ISO 9001:1994, Quality systems Model for quality assurance in design, development, production, installation and servicing. ISO 9002:1994, Quality systems Model for quality assurance in production, installation and servicing. ISO 9003:1994, Quality systems Model for quality assurance in final ins

41、pection and test. ISO 9004-1:1994, Quality management and quality system elements Part 1: Guidelines. ISO 2859-1:1989, Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection. ISO 2859-2:1985, Sampling procedures for

42、 inspection by attributes Part 2: Sampling plans indexed by limiting quality (LQ) for isolated lot inspection. ISO 3951:1989, Sampling procedures and charts for inspection by variables for percent non-conforming. 3 Definitions For the purpose of this International Standard the following definitions

43、apply. These definitions are those which do not appear in the International Electrotechnical Vocabulary (IEV) or differ from those given in the IEV. 3.1 ball and socket coupling coupling consisting of a ball, a socket and a locking device 3.2 bimetallic fitting device which is suitable for jointing

44、conductors of different materials 1) To be published.EN 61284:1997 6 BSI 04 July 2002 3.3 characteristic dimension dimension of a component of the test circuit or of a fitting which characterizes its effect on the electric field. In the case of a bundle, this dimension is approximately the diameter

45、of an enclosing circle; in the case of a corona ring or sphere, it is its largest dimension, etc. 3.4 clevis and tongue coupling coupling consisting of a clevis, a tongue and a clevis pin or bolt 3.5 connector device for jointing one or more conductors or earth wires. It may be a tension or non-tens

46、ion fitting 3.6 corona discharge electric discharge that only partially breaks down the gas insulation around the fittings under test 3.7 corona extinction voltage or conductor voltage gradient at which corona discharges cease during a decreasing test voltage sequence 3.8 corona inception voltage or

47、 conductor voltage gradient at which corona discharges initiate during an increasing test voltage sequence 3.9 earth wire fitting any component of an assembly for attaching an earth wire to a supporting structure other than a suspension clamp, a tension fitting or a mechanical protective fitting 3.1

48、0 factory-formed helical conductor fitting fitting consisting of helically formed wires which provide the force necessary to grip the conductor or earth wire by self-tightening 3.11 insulator set fitting any component of a suspension or tension insulator set other than a string insulator unit, a sus

49、pension clamp, a conductor tension fitting, an insulator protective fitting or a mechanical protective fitting 3.12 joint connector and that part of the conductor or earth wire that has been brought into intimate contact with it by compression or other mechanical means 3.13 mechanical damage load maximum load which can be applied to a fitting without an unacceptable permanent deformation when the fitting is tested under specified test conditions NOTE The unacceptable permanent deformation should be agreed up