1、BRITISH STANDARD Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic insulators with a.c. systems - Characteristics of insulator units of the long rod type The European Standard EN 604331998 has the status of a British Standard ICs 29.080.10 I NO COPYING WITHOUT BSI PERMISSION
2、EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 60433:1999 EC 60433:1998 - STD-BSI BS EN bD433-ENGL 1999 Lb24bb7 0750b42 ALT 9. direction of the Electrotechnical Amd. No. Da Sector Committee, was published under the authority of the Standards Committee and comes int effect on 15 February 1999 BS EN 604Xk
3、1999 Textaffected National foreword This British Standard is the English language version of EN 60433J998. It is identical with IEC 60433: 1998. The UK participation in its preparation was entrusted by Technical Committee PEy36, Ins-rs for power systems, to Subcommittee PEy36/2, Line insulators, whi
4、ch has the responsibility to: - aid enquirers to understand the text, - present to the responsible internationfluropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interesb informed; - monitor related international and European developments and promulgate
5、them in the UK. A list of organhations 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 been renumbered as IEC 60027-1. For a period of time during the cha
6、nge over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is dram to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding Eur
7、opean publications. The British Standards which implement these intemational or European publicatons may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. A Bri
8、tish Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a fron
9、t cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cova. O BSI 02-1999 I I ISBN O 680 32093 6 STD.8SI BS EN bO433-ENGL 1779 I Lb24bb7 075b43 75b M EUROPEAN STANDARD EN 60433 NORME EUROPENNE EUROPISCHE NORM October 1998 ICs 29.080.10 English version Insul
10、ators for overhead lines with a nominal voltage above 1 kV Ceramic insulators for a.c. systems Characteristics of insulator units of the long rod type (IEC 60433:1998) Isolateurs pour lignes ariennes de tension nominale suprieure 1 kV isolateurs cramiques pour systmes courant alternatif - Caractrist
11、iques des elments de chanes disolateurs ft long Langstabausfhrung (CE1 60433: 1998) Isolatoren fr Freileitungen mit einer Nennspannung ber 1 kV Keramik-Isolatoren fr Wechselspannungssysteme Kenngren von Kettenisolatoren in (IEC 60433: 1 998) This European Standard was approved by CENELEC on 1998-1 0
12、-01. 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-to-date lists and bibliographical references concerning such national standards may be obtai
13、ned 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 and notified to the Centr
14、al Secretariat has the same status as the official versions. CENELEC members are the national electrotechnicai committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland. Ireland. Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
15、 United Kingdom. CENELEC European Committee for Eiectrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassan 35, B - 1050 Brussels 1998 CENELEC - All rights of exploitation in any form and by any
16、 means reserved worldwide for CENELEC members. Ret. No. EN 60433: 1998 E STD-BSI BS EN b0433-ENGL 1777 Lb24bSS 0750644 b72 Page 2 EN 60433:1998 Foreword The text of document 36B/180/FDIS, future edition 3 of IEC 60433, prepared by SC 368, Insulators for overhead lines, of IEC TC 36, Insulators, was
17、submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60433 on 1998-1 0-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by pubiication of an identical national standard or by endorsement (dp) 1999-07-01 - latest date by
18、 which the national standards conflicting with the EN have to be withdrawn (daw) 200 1 -07-0 1 Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the international Standard I
19、EC 60433:1998 was approved by CENELEC as a European Standard without any modification. STD-BSI BS EN bUq33-ENGL 1999 II lbZibb7 07CUb45 527 U Page 3 EN 60433:1998 INSULATORS FOR OVERHEAD LINES Ceramic insulators for a.c. systems - Characteristics of insulator units of the long rod type WITH A NOMINA
20、L VOLTAGE ABOVE 1 O00 V - 1 Scope This International Standard is applicable to string insulator units of the long rod type with insulating parts of ceramic material intended for use in a.c. overhead power lines with a nominal voltage greater than 1 O00 V and a frequency not greater than 100 Hz. It i
21、s also applicable to insulators of similar design, used in substations. This standard is applicable to ceramic string insulator units of the long rod type, either with a clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both ends for coupling with a pin ball
22、. The object of this standard is to prescribe specified values for electrical and mechanical characteristics, and for the principal dimensions of ceramic string insulator units of the long rod type. This standard is applicable to string insulator units for use on overhead lines situated in lightly p
23、oiluted areas, and the creepage distances given in table 1 have been established accordingly, using the IEC 60815 recommendation of 16 mm/kV for pollution level I. However, shorter creepage distances may be used in some non-polluted areas. If specific operating conditions require or allow non-standa
24、rd (longer or shorter) creepage distances, the mechanical characteristics as well as the lengths L (see clause 4) of this standard should be used unless the need for exceptionally long creepage distances requires values of i greater than those given in table 1. In the case of special requirements, e
25、.g. very heavy polluted areas and for other particular or extreme environmental conditions, it may be necessary for certain dimensions to be changed. NOTES i As far as reasonably applicable, this International Standard may also be applied to similar insulator units outside the scope of this standard
26、, such as insulators for electric traction lines. 2 This International Standard does not include tests on insulators and dimensions of end fittings. 3 Ball and socket couplings are covered by IEC 60120, clevis and tongue couplings by IEC 60471. 4 For the definition of pollution levels, see IEC 60815
27、. 5 The term “ceramic“ is used in this International Standard to refer to porcelain materials and, contrary to North American practice, does not include glasses. Page 4 EN 60433:1998 2 Normative references The following normative documents contain provisions which, through reference in this text, co
28、nstitute provisions of this International Standard. At the time of publication, the editions 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
29、 editions of the normative documents indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 60071 -1 :1993, Insulation co-ordination - Part 1: Definitions, principles and rules . IEC 601 20:1984, Dimensions of ball and socket couplings of string in
30、sulator units IEC 60383-1:1993, Insulators for overhead lines with a nominal voltage above 1 O00 V - Part 1: Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria IEC 60471 :1977, Dimensions of clevis and tongue couplings of string insulator units IEC
31、60672-1:1995, Ceramic and glass insulating materials - Part 1: Definitions and classification IEC 60672-3: 1 997, Ceramic and glass insulating materials - Part 3: Specification for individual materials IEC 60815:1986 Guide for the selection of insulators in respect of polluted conditions 3 Definitio
32、n For the purposes of this International Standard, the following definition applies: 3.1 long rod insulator suspension or tension insulator consisting of an approximately cylindrical insulating pari provided with sheds and equipped at the ends with external metal fittings The insulator is designed i
33、n such a manner that the shortest puncture path through solid insulating material is at least equal to half the arcing distance. Therefore it is a class A insulator according to IEC 60383-1. 4 Characteristics String insulator units of the long rod type are characterised by the following specified ch
34、aracteristics: - the standard lightning impulse withstand voltage (see IEC 60071 -1); - the wet power frequency withstand voltage (see IEC 60071 -1); - the tensile mechanical failing load; - the maximum nominal length L of the insulator; - the maximum nominal diameter D of the insulating pari ; - th
35、e minimum nominal creepage distance; - the standard coupling. Page 5 EN 60433:1998 The corresponding values are specified in table 1. The minimum nominal creepage distances are based on a specific creepage distance of 16 mm/kV for the lowest value of the highest voltage for equipment corresponding t
36、o the specified value of the standard lightning impulse withstand (in accordance with IEC 60071-1). NOTES 1 The tolerances given in IEC 60383-1 are applicable to all the dimensions in table 1, even if the adjectives “minimum“ or “maximum“ are used before the term nominal“. 2 Dry lightning impulse wi
37、thstand voltage and wet power frequency withstand voltage are specified in table 1 for single unit string insulators. Values of Withstand voltages of insulator strings consisting of more than one unit are not contained in this standard. 3 The rod diameter is not specified since it depends on the mec
38、hanical characteristics of the insulating material. Information on the definition and classification of ceramic insulating materials can be found in IEC 60672-1 and IEC 60672-3. 5 Designation and marking Long rod insulators are designated in table 1 by letter L, followed by a figure indicating the s
39、pecified mechanical failing load in kilonewtons. Then follows the letters 6 or C indicating ball and socket or clevis and tongue coupling respectively, followed by the value of the lightning impulse withstand voltage in kilovolts. Example: L 160 5 550 indicates: L: long rod insulator; 160: 6: ball a
40、nd socket coupling; 550: specified mechanical failing load, tension, 160 kN; dry lightning impulse withstand voltage 550 kV. The insulators shall be marked either on the upper shed or on the metal parts with the name or trade mark of the manufacturer and the year of manufacture. In addition, each un
41、it shall be marked with the specified mechanical failing load, by using the first part of the designation; for instance, the insulator shall be marked L 160 for the units with 160 kN specified mechanical failing load. These markings shall be legible and indelible. Figure 1 shows a long rod insulator
42、 with clevis couplings, figure 2 shows a long rod insulator with socket couplings. STD-BSI BS EN bU433-ENGL 1999 sl Lb2LiLbl CI750648 238 M Page 6 EN 60433:1998 U L I- - STD-BSI BS EN 60413-ENGL 1799 E 1b2Libh9 0750649 174 Page 7 EN 60433:1998 L 3 Figure 1 - Long rod insulator with clevis couplings,
43、 type C /-u- - Figure 2 - Long rod insulator with socket couplings, type B Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions from other publications. The
44、se normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard oniy when incorporated in it by amendment or revision. For undat
45、ed references the latest edition of the publication referred to applies (including amendments). NOTE: When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication - Year IEC 60071-1 1993 - Title Insulation co-ordination Part
46、 1: Definitions, principles and rules EN/HD - Year EN 60071-1 1995 IEC 60120 1984 IEC 60383-1 1993 IEC 60471 1977 IEC 60672-1 1995 IEC 60672-3 1997 IEC 60815 1986 Dimensions of ball and socket couplings of string insulator units Insulators for overhead lines with a nominal voltage above 1 kV Part 1:
47、 Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria Dimensions of clevis and tongue couplings of string insulator units Ceramic and glass insulating materials Part 1 : Definitions and ciassification Pan 3: Specification for individual materials Guid
48、e for the selection of insulators in respect of polluted conditions HD 474 S1 1986 EN 60383-1 1996 EN 60672-1 1995 EN 60672-3 1997 BS EN 60433:1999 IEC 60433:1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for prepari
49、ng British Standards. It presents the UK view on standards in Europe and at the internatioxd level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British standard would inform the Secretary of the technical committee responsible, the
