1、BRITISH STANDARD BS EN 60168:1995 IEC 60168:1994 Incorporating Amendments Nos. 1 and 2 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV The European Standard EN 60168:1994, with the incorporation of amendments A1:1997 and A2
2、:2000, has the status of a British Standard ICS 29.080.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 60168:1995 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Bo
3、ard and comes into effect on 15 June 1995 BSI 06-2001 The following BSI references relate to the work on this standard: Committee reference PEL/36 Draft for comment 92/29485 DC ISBN 0 580 24303 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted
4、to Technical Committee PEL/36, Insulators for power systems, upon which the following bodies were represented: Association of Consulting Engineers BEAMA Electrical Cable and Conductor Accessory Manufacturers Association British Industrial Ceramic Manufacturers Association British Railways Board Elec
5、trical and Electronic Insulation Association (BEAMA Ltd.) Electricity Association Overhead Transmission Line Contractors (BEAMA Ltd.) Transmission and Distribution Association (BEAMA Ltd.) Amendments issued since publication Amd. No. Date Comments 10499 January 2000 13134 June 2001 Indicated by a si
6、delineBS EN 60168:1995 BSI 06-2001 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 60168 5BS EN 60168:1995 ii BSI 06-2001 National foreword This British Standard has been prepared by technical committee PEL/36 and is the English Language version o
7、f EN 60168:1994 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV, including amendments A1:1997 and A2:2000, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 60168:1
8、994 including amendments 1:1997 and 2:2000 published by the International Electrotechnical Commission (IEC). This British Standard supersedes BS 3297-1:1982 which will be withdrawn on 1 December 1995. BS 3297-2 which is identical to IEC 60273 Characteristics of indoor and outdoor post insulators for
9、 systems greater than 1 000 V (implementation of CENELEC HD 578 S1:1992) remains current. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International S
10、tandards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. Additional information The graphic signs, symbols and letters used in this standard may be found in the following British Standards: BS 3939, Graphic symbols for electrical power, telecommunica
11、tions and electronics diagrams. Part 1:1986: General information, general index; Part 2:1985: Symbol elements, qualifying symbols and other symbols having general application. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are re
12、sponsible 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 front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 42, an inside back cover and a back cove
13、r. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60168 December 1994 + A1 July 1997 + A2 December 2000 ICS 29.080.10 Desc
14、riptors: Post insulators, ceramic material, glass, test English version Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV (includes amendments A1:1997 and A2:2000 ) (IEC 60168:1994 + A1:1997 + A2:2000) Essais des supports iso
15、lants dintrieur et dextrieur, en matire cramique ou en verre, destins des installations de tension nominale suprieure 1 kV (inclut les amendements A1:1997 et A2:2000) (CEI 60168:1994 + A1:1997 + A2:2000) Prfungen an Innenraum- und Freiluft-Sttzisolatoren aus keramischem Werkstoff oder Glas fr System
16、e mit Nennspannungen ber 1 kV (enthlt nderungen A1:1997 und A2:2000) (IEC 60168:1994 + A1:1997 + A2:2000) This European Standard was approved by CENELEC on1994-12-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
17、 Standard the 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
18、, 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Bel
19、gium, 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 fr E
20、lektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN 60168:1994 + A1:1997 + A2:2000 EEN 60168:1994 BSI 06-2001 2 Foreword The text of document 36C(CO)58, future edition 4 of IEC 168, prepared by SC 36C, Insulators fo
21、r substations, of IEC TC 36, Insulators, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60168 on 1994-12-06. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for informati
22、on only. In this standard, Annex ZA is normative and Annex A, Annex B and Annex C are informative. Annex ZA has been added by CENELEC. Foreword to amendment A1 The text of document 36C/81/FDIS, future amendment 1 to IEC 60168:1994, prepared by SC 36C, Insulators for substations, of IEC TC 36, Insula
23、tors, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 60168:1994 on 1997-07-01. The following dates were fixed: Foreword to amendment A2 The text of document 36C/121/FDIS, future amendment 2 to IEC 60168:1994, prepared by SC 36C, Insulators for substa
24、tions, of IEC TC 36, Insulators, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to EN 60168:1994 on 2000-11-01. The following dates were fixed: Contents Page Foreword 2 Introduction 3 Section 1. General 1.1 Scope and object 5 1.2 Normative references 5 1.3
25、 Definitions 6 Section 2. Insulators 2.1 Insulator designs and insulating materials 9 2.2 Values which characterize a post insulator 9 2.3 Identification of insulators 10 Section 3. Classification of the tests, sampling rules and procedures 3.1 Classification of the tests 11 3.2 Quality assurance 11
26、 3.3 General requirements for type tests 11 3.4 General requirements for sample tests 13 Section 4. Test procedures for electrical tests 4.1 General requirements for high-voltage tests 15 4.2 Standard atmospheric conditions and correction factors for electrical tests 15 4.3 Artificial rain parameter
27、s for wet tests 15 4.4 Mounting arrangements for electrical tests 15 4.5 Dry lightning-impulse withstand voltage test Type test 17 4.6 Dry or wet switching-impulse withstand voltage tests Type test 17 latest date by which the EN has to be implemented at national level by publication of an identical
28、national standard or by endorsement (dop) 1995-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1995-12-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement
29、 (dop) 1998-04-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 1998-04-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2001-08-01 latest dat
30、e by which the national standards conflicting with the amendment have to be withdrawn (dow) 2003-11-01EN 60168:1994 BSI 06-2001 3 Page 4.7 Dry power-frequency withstand voltage test Type test (applicable only to post insulators for indoor use) 18 4.8 Wet power-frequency withstand voltage test Type t
31、est (applicable only to post insulators for outdoor use) 18 4.9 Puncture test Sample test 19 4.10 Routine electrical test 19 Section 5. Test procedures for mechanical and other tests 5.1 Verification of the dimensions Type and sample test 21 5.2 Mechanical failing load test Type and sample test 22 5
32、.3 Test for deflection under load Special type test 24 5.4 Temperature cycle test Sample test 24 5.5 Routine thermal shock test (applicable only to toughened glass insulating parts) 25 5.6 Porosity test Sample test (applicable only to ceramic post insulators) 25 5.7 Galvanizing test Sample test 25 5
33、.8 Routine visual inspection 26 5.9 Routine mechanical test 27 Section 6. Tests applicable to post insulators 6.1 Type tests 29 6.2 Sample tests 29 6.3 Routine tests 29 6.4 Summary of tests on post insulators 30 Annex A (informative) Methods of testing for tolerances of parallelism, eccentricity, an
34、gular deviation, camber and shed angle of post insulators 35 Annex B (informative) Methods of routine testing of unassembled insulator units 38 Annex C (informative) Bibliography 41 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant Euro
35、pean publications 42 Figure 1 Solid core cylindrical post insulator 32 Figure 2 Cavity core cylindrical post insulator 33 Figure 3 Cylindrical post insulator with internal metal fittings 33 Figure 4 Cylindrical post insulator with internal metal fittings 34 Figure 5 Pedestal post insulator 34 Figure
36、 6 Cylindrical post insulator 34 Page Figure A.1 35 Figure A.2 36 Figure A.3 36 Figure A.4 37 Figure A.5 37 Figure B.1 38 Figure B.2 39 Figure B.3 40 Table 1 Number of samples for sample tests 13 Table 2 Mounting height of outdoor post insulators 16 Table 3 Type tests applicable to post insulators 3
37、0 Table 4 Sample tests applicable to post insulators 30 Table 5 Routine tests applicable to post insulators 31Introduction The main purpose in preparing this edition has been to align the text and presentation as far as practicable with the fourth edition of IEC 383-1 and IEC 383-2. Concepts of elec
38、trical and mechanical equivalence of post insulators have been introduced, and the clauses dealing with mechanical testing have been redrafted to clarify the test requirements.4 blankEN 60168:1994 BSI 06-2001 5 Section 1. General 1 1.1 Scope and object This International Standard IEC 168 is applicab
39、le to post insulators and post insulator units of ceramic material or glass, for indoor and outdoor use in electrical installations or equipment, operating on alternating current with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. This standard may be regarded as a p
40、rovisional standard for post insulators for use on d.c. systems. IEC 438 gives general guidance for those insulators. This standard does not apply to composite insulators, or to those indoor post insulators in organic material which are covered by another IEC standard 1 1) . The object of this stand
41、ard is to define: the terms used; the electrical and mechanical characteristics of post insulators; the conditions under which the specified values of these characteristics are verified; the methods of test; the acceptance criteria. Numerical values of characteristics of post insulators are specifie
42、d in IEC 273. This standard does not include requirements dealing with the choice of post insulators for specific operating conditions. NOTE 1 A guide for the choice of insulators under polluted conditions is available, see 2. NOTE 2 This standard does not include radio interference tests or artific
43、ial pollution tests. These subjects and relevant test methods are dealt with in other IEC publications, see 3, 4 and 5. NOTE 3 When this standard is applied to hollow post insulators, other IEC publications should also be taken into account, see 6 and 7. 1.2 Normative references The following normat
44、ive documents contain provisions which, through reference in this text, constitute 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
45、 are encouraged to investigate the possibility of applying the most recent edition of the normative documents listed below. Members of IEC and ISO maintain registers of currently valid normative documents. IEC 50(471):1984, International Electrotechnical Vocabulary (IEV) Chapter 471: Insulators. IEC
46、 60-1:1989, High-voltage test techniques Part 1: General definitions and test requirements. IEC 71-1:1993, Insulation co-ordination Part 1: Definitions, principles and rules. IEC 71-2:1976, Insulation co-ordination Part 2: Application guide. IEC 71-3:1982, Insulation co-ordination Part 3: Phase-to-p
47、hase insulation co-ordination Principles, rules and application guide. IEC 273:1990, Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1 000 V. IEC 438:1973, Tests and dimensions for high-voltage d.c. insulators. ISO 1459:1973, Metallic coatings Pro
48、tection against corrosion by hot dip galvanizing Guiding principles. ISO 1460:1992, Metallic coatings Hot dip galvanized coatings on ferrous metals Gravimetric determination of the mass per unit area. ISO 1461:1973, Metallic coatings Hot dip galvanized coatings on fabricated ferrous products Require
49、ments. ISO 1463:1982, Metal and oxide coatings Measurement of coating thickness Microscopical method. 1) The figures in square brackets refer to Annex C (Bibliography).EN 60168:1994 6 BSI 06-2001 Section 1 ISO 2064:1980, Metallic and other non-organic coatings Definitions and conventions concerning the measurement of thickness. ISO 2178:1982, Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method. 1.3
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