1、BRITISH STANDARD BS EN 61466-2:1999 IEC 61466-2:1998 Incorporating Amendment No. 1 Composite string insulator units for overhead lines with a nominal voltage greater than 1 kV Part 2: Dimensional and electrical characteristics The European Standard EN 61466-2:1998, with the incorporation of A1:2002,
2、 has the status of a British Standard ICS 29.080.10 BS EN 61466-2:1999 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 February 1999 BSI 17 October 2002
3、ISBN 0 580 32092 8 National foreword This British Standard is the English language version of EN 61466-2:1998, including amendment A1:2002. It is identical with IEC 61466-2:1998, including amendment A1:2002. The UK participation in its preparation was entrusted by Technical Committee PEL/36, Insulat
4、ors for power systems, to Subcommittee PEL/36/2, Line insulators, which has the responsibility to: 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; monit
5、or related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee 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
6、been renumbered as IEC 60027-1. For a period of time during the change over from one numbering 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 b
7、e found in the BSI Catalogue under the section entitled “International Standards Correspondence 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
8、 responsible for its correct application. Compliance with a British Standard does not of itself 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 6, an inside back cover and a back cove
9、r. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 13906 17 October 2002 Replacement of Clause 1, Table 1 and addition of Clause 8EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61466-2 N
10、ovember 1998 + A1 March 2002 ICS 29.080.10 English version Composite string insulator units for overhead lines with a nominal voltage greater than 1 kV Part 2: Dimensional and electrical characteristics (includes amendment A1:2002)(IEC 61466-2:1998 + A1:2002) Isolateurs composites destins aux lignes
11、 ariennes de tension nominale suprieure 1k V Partie 2: Caractristiques dimensionnelles et lectriques (inclut lamendment A1:2002) (CEI 61466-2:1998 + A1:2002) Verbund-Kettenisolatoren fr Freileitungen mit einer Nennspannung ber 1 kV Teil 2: Mae und elektrische Kenngren (enthlt nderung A1:2002) (IEC 6
12、1466-2:1998 + A1:2002) This European Standard was approved by CENELEC on 1998-10-01. Amendment A1 was approved by CENELEC on 2002-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a nati
13、onal 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, German). A version i
14、n 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 Republic, Denmark,
15、 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 fr Elektrotechnisc
16、he Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61466-2:1998 + A1:2002 EEN 61466-2:1998 BSI 17 October 2002 2 Foreword The text of document 36B/179/FDIS, futur
17、e edition 1 of IEC 61466-2, prepared by SC 36B, Insulators for overhead lines, of IEC TC 36, Insulators, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61466-2 on 1998-10-01. The following dates were fixed: Annexes designated “normative” are part of the body of the
18、standard. Annexes designated “informative” are given for information only. In this standard, Annex ZA is normative and Annex A is informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61466-2:1998 was approved by CENELEC as a European Standard
19、 without any modification. Foreword to amendment A1 The text of document 36B/202/FDIS, future amendment 1 to IEC 61466-2:1998, prepared by SC 36B, Insulators for overhead lines, of IEC TC 36, Insulators, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN
20、 61466-2:1998 on 2002-03-01. The following dates were fixed: Endorsement notice The text of amendment 1:2002 to the International Standard IEC 61466-2:1998 was approved by CENELEC as an amendment to the European Standard without any modification. Contents Page Foreword 2 1S c o p e 3 2 Normative ref
21、erences 3 3 Mechanical and dimensional characteristics 3 4 Electrical characteristics 4 5 Designation 4 6M a r k i n g 4 7 Tolerances 4 8 Field control and arc protection devices 4 Annex A (informative) Information on creepage distance 6 Annex ZA (normative) Normative references to international pub
22、lications with their corresponding European publications 7 Table 1 Designation and characteristics of composite insulators 5 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-07-01 latest date by which th
23、e national standards conflicting with the EN have to be withdrawn (dow) 2001-07-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-12-01 latest date by which the national standards conflicting wi
24、th the amendment have to be withdrawn (dow) 2005-03-01EN 61466-2:1998 BSI 17 October 2002 3 1 Scope This part of IEC 61466 is applicable to composite string insulator units with a specified mechanical load (SML) of 40 kN to 210 kN for a.c. overhead lines with a nominal voltage greater than 1 000 V a
25、nd a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations or for railway applications. This standard applies to string insulator units of composite type with fittings in accordance with IEC 61466-1. This standard prescribes specified values for elect
26、rical and dimensional characteristics for composite insulators for overhead lines with a highest standard lightning impulse level of 1 050 kV and a specified mechanical load (SML) of 40 kN to 210 kN. NOTE General definitions and methods of testing are given in IEC 61109. 2 Normative references The f
27、ollowing normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61466. At the time of publication, the editions indicated were valid. All normative documents are subjected to revision, and parties to agreements based on this part of IE
28、C 61466 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60071-1:1993, Insulation co-ordination Part 1: Definitions, principles and
29、rules. IEC 60071-2:1976, Insulation co-ordination Part 2: Application guide. IEC 61109:1992, Composite insulators for a.c. overhead lines with a nominal voltage greater than 1 000 V Definitions, test methods and acceptance criteria. IEC 61466-1:1997, Composite string insulator units for overhead lin
30、es with a nominal voltage greater than 1 000 V Part 1: Standard strength classes and end fittings. 3 Mechanical and dimensional characteristics Composite string insulator units are standardized by the following mechanical and dimensional characteristics: Table 1 gives a minimum creepage distance for
31、 each insulator along with the highest voltage for equipment based on a specific creepage distance of 16 mm/kV (phase/phase). This voltage is given for information only. Other values of specific creepage distance may be required. Further information on composite insulator creepage distances can be f
32、ound in Annex A. specified mechanical load (SML) which are dealt with in IEC 61466-1 type of couplings minimum creepage distance for which values are given in Table 1 minimum arcing distance maximum diameter of insulating partEN 61466-2:1998 4 BSI 17 October 2002 4 Electrical characteristics Composi
33、te string insulator units are standardized by the standard lightning impulse withstand voltage, for which values are given in Table 1. The wet power frequency withstand voltage shall be that given in IEC 60071-1, unless otherwise stipulated by national regulations or practice. NOTE General definitio
34、ns, principles, rules and application guidelines for insulation co-ordination are given in IEC 60071-1 and IEC 60071-2. 5 Designation Composite insulators are designated in Table 1 as follows: by the letters CS followed by a number indicating the specified mechanical load (SML) in kilonewtons (kN);
35、the letters X and Z, representing the couplings in accordance with IEC 61466-1; the two numbers separated by a solidus indicate the standard lightning impulse withstand voltage and the minimum creepage distance. 6 Marking The insulator shall be marked in accordance with IEC 61466-1. 7 Tolerances The
36、 dimensions given in Table 1 are the absolute minima or maxima; hence no tolerances are applicable. The dimensions and tolerances of insulators supplied in compliance with this standard shall be shown on the manufacturers drawing. 8 Field control and arc protection devices For higher system voltages
37、, field control devices may be necessary. When such devices are fitted on the insulators, the arcing distance in Table 1 shall be determined considering their presence. However, if separate arc protection devices are used, they shall not be taken into account.EN 61466-2:1998 BSI 17 October 2002 5 Ta
38、ble 1 Designation and characteristics of composite insulators Designation a Preferred specified mechanical loads (non-preferred values greyed out) (SML) Standard lightning impulse withstand voltage b Minimum creepage distance Minimum arcing distance c Maximum diameter of the insulating part Highest
39、voltage for equipment based on 16 mm/kV specific creepage distance d kN kV mm mm mm kV CS(SML)XZ- 60/195 40 70 100 120 160 210 60 195 100 200 12 CS(SML)XZ- 75/195 40 70 100 120 160 210 75 195 125 200 12 CS(SML)XZ- 75/280 40 70 100 120 160 210 75 280 125 200 17,5 CS(SML)XZ- 95/195 40 70 100 120 160 2
40、10 95 195 160 200 12 CS(SML)XZ- 95/280 40 70 100 120 160 210 95 280 160 200 17,5 CS(SML)XZ- 95/385 40 70 100 120 160 210 95 385 160 200 24 CS(SML)XZ- 125/385 40 70 100 120 160 210 125 385 210 200 24 CS(SML)XZ- 145/385 40 70 100 120 160 210 145 385 240 200 24 CS(SML)XZ- 145/580 40 70 100 120 160 210
41、145 580 240 200 36 CS(SML)XZ- 170/580 40 70 100 120 160 210 170 580 285 200 36 CS(SML)XZ- 250/835 40 70 100 120 160 210 250 835 435 200 52 CS(SML)XZ- 325/1160 40 70 100 120 160 210 325 1 160 570 200 72,5 CS(SML)XZ-450/1970 40 70 100 120 160 210 450 1 970 815 200 123 CS(SML)XZ-450/2320 40 70 100 120
42、160 210 450 2 320 815 200 145 CS(SML)XZ-550/1970 40 70 100 120 160 210 550 1 970 1 005 200 123 CS(SML)XZ-550/2320 40 70 100 120 160 210 550 2 320 1 005 200 145 CS(SML)XZ-550/2720 40 70 100 120 160 210 550 2 720 1 005 200 170 CS(SML)XZ-650/2320 40 70 100 120 160 210 650 2 320 1 195 200 145 CS(SML)XZ-
43、650/2720 40 70 100 120 160 210 650 2 720 1 195 200 170 CS(SML)XZ-650/3920 40 70 100 120 160 210 650 3 920 1 195 200 245 CS(SML)XZ-750/2720 40 70 100 120 160 210 750 2 720 1 395 200 170 CS(SML)XZ-750/3920 40 70 100 120 160 210 750 3 920 1 395 200 245 CS(SML)XZ-850/3920 40 70 100 120 160 210 850 3 920
44、 1 585 200 245 CS(SML)XZ-950/3920 40 70 100 120 160 210 950 3 920 1 775 200 245 CS(SML)XZ-1050/3920 40 70 100 120 160 210 1 050 3 920 1 970 200 245 a SML is the chosen specified mechanical load. XZ are the coupling code letters in accordance with IEC 61466-1. b When using arc protection devices, gre
45、ater values of lightning impulse withstand voltage, in accordance with insulation co-ordination rules, may be specified by the customer. c The minimum arcing distance is specified, rather than a maximum section length (distance between couplings), because the diversity of end fitting types and mater
46、ials makes it impractical, at the time of this edition, to standardize section length. d This column is given for information only. For supplementary information on creepage distance see Annex A.EN 61466-2:1998 6 BSI 17 October 2002 Annex A (informative) Information on creepage distance Table 1 give
47、s values of the highest voltage for equipment U mbased on a specific creepage distance of 16 mm/kV (phase/phase). Experience to date indicates that this specific creepage distance is satisfactory for areas where pollution performance is not considered to be a critical factor. The user will need to c
48、onsider any change of creepage distance (increase or even decrease) necessary to ensure adequate performance for the environmental conditions (e.g. pollution level, exposure time, wetting conditions, etc.) encountered in each area of application. At the time of preparation of this standard, insuffic
49、ient information was available to give guidance on the specific creepage distances and different housing materials appropriate to composite insulators for the various environmental conditions to ensure a satisfactory performance. This work is currently being undertaken at CIGRE 1)with the objective of including their recommendations in a future revision of IEC 60815 2) . The guidance currently available in IEC 60815, both for specific cree
