1、BRITISH STANDARD Overhead lines Requirements and tests for fittings The European Standard EN 61284:1997 has the status ofa British Standard ICs 29.240.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMTTTED RY COPYRTGHT LAW BS EN 61284:1998 IEC 61284:1997 Incovorating Corrigendum No. I BS EN61284:1
2、998 was published under the Amd. No. 13778 Corrigendum No. 1 authority of the Standards Board and comes into effect on 15 March 1998 OBSI 04 July 2002 National foreword Date Comments 04 July 2002 Change to field glasses specification in 14.4 and replacement of Figure D.2 This British Standard is the
3、 English language version ofEN 61284:1997, including Corrigendum September 1998. It is identical with IEC 61284: 1997. It supersedes BS EN 61284:1996 which is withdrawn. The UKparticipation in its preparation was entrusted to Technical Committee PELA 1, Overhead lines, which has the responsibility t
4、o: - 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 promulgate them in the UK. A list o
5、f 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 oftime during the change over from one numbering
6、 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 Corrresponden
7、ce Index”, or by using the “Search” facility of the BSIElectronic Catalogue or of British Stan dards 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 ofits
8、elf confer immunity from legal obligations. 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
9、 issued. ISBN O 580 29334 3 BS EN61284:1998 Contents National foreword Page Inside fiont cover Foreword Text of EN 61284 2 5 i O BSI 04 July 2002 11 blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61284 November 1997 ICs 29.240.20 Supersedes EN 61284:1995 Descriptors: Overhead lines, join
10、ts, insulators, fittings English version Overhead lines - Requirements and tests for fittings (IEC 61284:1997) Lignes ariennes - Freileitungen - Exigences et essais pour le matriel dquipement Anforderungen und Prfungen fr Armaturen (CE1 6 1284: 1997) (IEC 61284:1997) This European Standard was appro
11、ved by CENELEC on 1997-10-0 1. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-tedate lists and bibliographical references concerning such nation
12、al 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, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language
13、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 Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain
14、, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels O 1997 CENELEC -Ail rights of exploitati
15、on in any form and by any means reserved worldwide for CENELEC members. Ref No. EN 61284:1997 E EN 61284:1997 Fore word The text ofdocument 11/119/FDIS, future edition 2 ofIEC 61284, prepared by IEC TC 11, Overhead lines, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
16、EN 61284 on 1997-10-01. This European Standard supersedes EN 61284:1995. The following dates were fixed: - 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 nati onal stan
17、dards conflicting with the EN have to be withdrawn (dw) 1998-07-0 1 Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex A, Annex B, Annex C, Annex D, Annex E and AnnexZA are normative and Annex
18、F, Annex G, Annex H, Annex I, and Annex J are informative. Annex ZA has been added by CENELEC. Endor sement notice The text of the International Standard IEC 61284: 1997 was approved by CENELEC as a European Stan dard with out any modification. Contents Foreword 1 Scope 2 Normative references 3 Defi
19、nitions 4 Requirements 4.1 General requirements 4.1.1 Design 4.1.2 Materials 4.1.3 Dimensions and tolerances 4.1.4 Protection against corrosion 4.1.5 Marking 4.1.6 Instructions for assembly 4.2 Requirements for specific fittings Page 2 5 5 5 7 7 7 8 8 8 9 9 9 4.2.1 Insulator set fittings and earth w
20、ire fittings 9 4.2.2 Suspension clamps 10 repairing conductor and earth wire 4.2.4 Insulator protective fittings 11 5 Quality assurance 11 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 6.2.2 Application 12 6.2.3 Sampling and acceptance cri
21、teria 12 4.2.3 Fittings for jointing, terminating and 10 6 Classification of tests -Type tests, 6.2.1 General 11 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-destr
22、uctive testing 14 11 Mechanical tests 15 11.1 Number of fittings to be tested 15 11.2 Test piece and attachments 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 failure load t
23、est 15 11.3.2 Mechanical damage and failure load test of the attachment point used during erection 15 1 1.4 Suspension clamps 16 1 1.4.1 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 cl
24、amps with only specified minimum slip load 17 11.4.4 Slip test on controlled slippage clamps 17 11.4.5 Clamp bolt tightening test 18 11.5 Tension clamps, dead-end tension joints and mid-span tension joints 18 11.5.1 Tensile test 18 2 OBSI 04 July 2002 EN 61284:1997 Page 11.5.2Mechanical damage and f
25、ailure 11.5.3 Mechanical damage and failure load test load test of the attachment point used during erection 11.5.4 Clamp bolt tightening test 11.6 Partial tension fittings 11.6.1 Partial tension fittings other 11.6.2 T connectors 11.7 Repair sleeves 11.8 Insulator protective fittings 12 Magnetic lo
26、sses test 12.1 General 12.2 Test procedure 13 Heat cycle tests 13.1 Purpose 13.2 Joints 13.2.1 General 13.2.2 Service temperatures 13.2.3 Classification for test purposes 13.3 Test specimens 13.3.1 General 13.3.2 Multi-range connectors 13.3.3 Preparation 13.3.4 Data on test specimens 13.4 Test arran
27、gements 13.4.1 Test conditions 13.4.2 Reference conductor 13.4.3 Potential points 13.4.4 Installation of test loop 13.4.5 Measurements 13.5 Heat cycle test procedure 13.5.1 General 13.5.2 Joints of class A 13.5.3 Joints of class B 14 Corona and radio interference voltage (RIV) tests 14.1 Purpose 14.
28、2 Description of test methods 14.3 General 14.4 Test circuit and instruments 14.5 14.6 Acceptance criteria 14.7 Test report than T connectors Corona and RIV test procedures 19 19 19 19 20 20 20 20 20 20 21 29 29 29 29 29 30 30 30 30 30 30 31 31 31 31 31 31 32 32 33 34 34 34 34 35 36 36 37 37 14.8 Vo
29、ltage method 14.8.1 Adjacent conductors in a 14.8.2 Test set-up and dimensions 14.8.3 Critical variant 14.8.4 Distance from wall (reflection plane) w 14.8.5 Minimum clearance fkom adjacent live components 14.8.6 Metallic wall 14.9 Voltage gradient method 14.9.1 Conductor voltage on three-phase syste
30、m 14.9.2 Test set-up and dimensions 14.9.3 Test method Annex A (normative) Typical joint types Annex B (normative) Typical test circuit - Class A joints Annex C (normative) Typical test circuit - Class Bjoints Annex D (normative) Diagrammatic representation of heat cycle test sequence Annex E (norma
31、tive) Mathematical acceptance criterion Annex F (informative) Examples of normative documents recommended for fitting materials Annex G (informative) Potential points Annex H (informative) Test voltage calibration device Annex I (informative) Example of sampling with inspection by attributes Annex J
32、 (informative) Example of sampling with inspection by variables Annex ZA (normative) Normative refer ences to international publications with their corresponding European publications three-phase system Page 37 37 37 42 42 42 43 43 43 43 43 45 46 47 48 49 50 51 52 55 56 57 O BSI 04 July 2002 3 4 bla
33、nk EN 61284:1997 1 Scope This International Standard applies to fittings for overhead lines ofnominal voltage above 45 kV. It may also be applied to fittings for overhead lines oflower nominal voltage and to similar fittings for substations. 2 Normative references The foliowing normative documents c
34、ontain provisions which, through reference in this text, constitute provisions ofthis International Standard. At the time ofpublication ofthis standard, the editions indicated were valid. Ail normative documents are subject to revision, and parties to agreements based on this International Standard
35、are encouraged to investigate the possibility of applying the most recent editions ofthe normative documents indicated below. Members ofIEC and IS0 maintain registers ofcurrentlyvalid Internat ional Stan dards. IEC 60050(466): 1990, International Electrotechnical Vocabulary (IEV - Chapter 466: Overh
36、ead lines. IEC 60060-1: 1989, High-voltage test techniques -Part I: General deJinitions and test requirements. IEC 60 120: 1984, Dimensions ofball and socket couplings ofstring insulator units. IEC 603 72: 1984, Lacking devices for ball and socket couplings of string insulator units - Dimensions and
37、 tmts. IEC 6047 1 : 1977, Dimensions ofclevis and tongue couplings of string insulator units. IEC 60826: 199 1, Lading and strength of overhead transmission lines. IEC 6 1089: 199 1, Round wire cmcentric lay overhead electrical stranded conductors. CISPR 16- 1 : 1993, SpeciJication for radio disturb
38、ance and immunity measuring apparatus and methads - Part I: Radio disturbance and immunity measuring apparatus. CISPR 18-2: 1986, Radio inteiSerence characteristics of overheadpower lines and high-voltage equipment - Part 2: Methodr of measurement andprocedure for determining limits. IS0 146 1, Hot
39、dip galvanizedcoatings on fabricated ferrousproducts - Specijications. IS0 9000- 1: 1994, Quality management and quality assurance standards -Part I: Guidelines forselection and use. IS0 900 1 : 1994, Quality systems -Madel for quality assurance in design, development, production, installation and s
40、ervicing. IS0 9002: 1994, Quality systems -Madel for quality assurance in production, installation and servicing. IS0 9003: 1994, Quality systems -Madel for quality assurance inJinal inspection and test. IS0 9004-1 : 1994, Quality management and quality system elements -Part I: Guidelines. IS0 2859-
41、1: 1989, Samplingprocedures for inspection by attributes -Part I: Samplingplans indexed by acceptable quality level (AQL) for lot-by-lot inspection. IS0 2859-2: 1985, Samplingprocedures for inspection by attributes - Part 2: Samplingplans indexed by limiting quality (La for isolated lot inspection.
42、IS0 395 1 : 1989, Samplingprocedures and charts for inspection by variables forpercent non-conforming. 3 Definitions For the purpose of this International Standard the following definitions apply. These definitions are those which do not appear in the International Electrotechnical Vocabulary OEV) o
43、r 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 conductors of different materials 1) To be published. 5 O BSI 04 July 2002 EN 61284:1997 3.3 characteristic dim
44、ension dimension ofa component ofthe test circuit or ofa fittingwhich characterizes its effect on the electric field. In the case of a bundle, this dimension is approximately the diameter of an enclosing circle; in the case of a corona ring or sphere, it is its largest dimension, etc. 3.4 clevis and
45、 tongue coupling coupling consisting of a clevis, a tongue and a clevis pin or bolt 3.5 conne c t or device for jointing one or more conductors or earth wires. It may be a tension or non-tension fitting 3.6 corona discharge electric discharge that only partially breaks down the gas insulation around
46、 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 conductor voltage gradient at which corona discharges initiate during an increasing test voltage sequence 3.
47、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 3.10 factory-formed helical conductor fitting fitting consisting ofhelically formed wires which provide the forc
48、e necessary to grip the conductor or earth wire by self-tightening 3.1 1 insulator set fitting any component of a suspension or tension insulator set other than a string insulator unit, a suspension clamp, a conductor tension fitting, an insulator protective fitting or a mechanical protective fittin
49、g 3.12 joint connector and that part ofthe 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 fittingwithout an unacceptable permanent deformation when the fitting is tested under specified test conditions NOTE The unacceptable permanent deformation should be agreed upon between purchaser and supplier. 3.14 mechanical failure load maximum load which can be applied to a fitting under specified test conditions 3.15 mechanical protective fitting any dev
