1、BRITISH STANDARD BS EN 61235:1995 Incorporating Amendment No. 1 and Corrigendum No. 1 Live working Insulating hollow tubes for electrical purposes The European Standard EN 61235:1995 has the status of a British Standard ICS 29.120.10; 13.340.20 BS EN 61235:1995 This British Standard, having been pre
2、pared under the direction of the Power Electrical Engineering Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 March 1994 BSI 23 December 2002 The following BSI references relate to the work on this standard: Committee reference PEL/88
3、Draft for comment 88/23761 DC ISBN 0 580 22964 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Power Electrical Engineering Standards Policy Committee (PEL/-) to Technical Committee PEL/88, upon which the following bodies were represen
4、ted: Association of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA Ltd.) BECCAMA (BEAMA Electrical Cable Connector and Accessories Manufacturers Association) British Railways Board Department of Trade and Industry Department of Trade and Industry (Consumer Safety Unit, CA Divi
5、sion) Electricity Association Federation of British Hand Tool Manufacturers GAMBICA (BEAMA Ltd.) Health and Safety Executive Industrial Safety (Protective Equipment) Manufacturers Association International Powered Access Federation Ministry of Defence National Association of Glove Manufacturers Coop
6、ted members Amendments issued since publication Amd. No. Date Comments 8959 December 1995 Indicated by a sideline in the margin 13835 Corrigendum No. 1 23 December 2002 Changes to 9.1.1 and 9.2.1BS EN 61235:1995 BSI 23 December 2002 i Contents Page Committees responsible Inside front cover National
7、foreword iii Foreword 2 Section 1. General 1S c o p e 3 2 Normative references 3 3 Definitions 3 4 Classification 4 Section 2. Technical characteristics 5M a t e r i a l s 5 6D i a m e t e r s o f t u b e s 5 Section 3. Type tests 7G e n e r a l 7 8 Visual inspection and dimensional check 7 9 Dielec
8、tric tests 8 10 Mechanical tests 10 11 Mechanical fatigue tests 12 Section 4. Routine tests and sampling tests 12 Routine tests 13 13 Sampling tests 13 14 Additional tests not indicated 13 Section 5. Special clauses 15 Marking 15 16 Modification 15 17 Acceptance 15 18 Quality assurance plan 15 Annex
9、 A (normative) Dielectric tests before and after exposure to humidity 17 Annex B (normative) Dielectric wet test 23 Annex C (normative) Mechanical tests 24 Annex D (normative) Routine tests 27 Annex E (normative) Sampling procedure 28 Annex F (informative) Acceptance tests 29 Annex ZA (normative) No
10、rmative references to international publications with their corresponding European publications 29 Figure A.1 Test arrangement 17 Figure A.2 Assembly diagram 18 Figure A.3 Constructional drawing for guard electrodes 19 Figure A.4 Constructional drawing for guard electrodes, parts A and B 20 Figure A
11、.5 Constructional drawing for guard electrode parts according to test-piece diameter 22 Figure B.1 Test arrangement 23 Figure B.2 Details of electrode arrangement 23 Figure C.1 Bending test test assembly 24 Figure C.2 Bending test detail of supports 24 Figure C.3 Torsion test Examples for fixing tub
12、es 25 Figure C.4 Crushing test 26 Figure D.1 Typical test arrangement 27BS EN 61235:1995 ii BSI 23 December 2002 Page Table 1 Preferred diameters 5 Table 2 Number of lengths of tubes required for tests 7 Table 3 Tests results 9 Table 4 Category reinforced: Values of F d , f and F rfor bending test 1
13、0 Table 5 Category standard: Values of F d , f and F rfor bending test 10 Table 6 Category light: Values of F d , f and F rfor bending test 11 Table 7 Categories reinforced and standard: Values of C d , d , and C rfor torsion test 11 Table 8 Category light: Values of C d , dand C rfor torsion test 1
14、1 Table 9 Values of F cand F ifor crush test 12 Table E.1 Classification of defects 28 Table E.2 Sampling plan for major defects 28BS EN 61235:1995 BSI 23 December 2002 iii National foreword This British Standard has been prepared under the direction of the Power Electrical Engineering Standards Pol
15、icy Committee (PEL/-). The text is identical with IEC 61235:1993, Live working Insulating hollow tubes for electrical purposes, including Corrigendum July 1999, published by the International Electrotechnical Commission (IEC) and prepared by IEC Technical Committee No. 78 Tools for live working. In
16、1995 the European Committee for Electrotechnical Standardization (CENELEC) accepted IEC 1235:1993, together with common modifications, as European Standard EN 61235:1995. As a consequence of implementing the European Standard this British Standard is numbered as BS EN 61235 and any reference to BS 7
17、741 should be read as reference to BS EN 61235. The graphics signs, symbols and letters used in this standard may be found in the following British Standards: BS 3939, Graphical symbols for electrical power, telecommunications and electronics diagrams Part 1:1986: General information, general index
18、Part 2:1985: Symbol elements, qualifying symbols and other symbols having general application. 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 Standa
19、rds Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. The Technical Committee has reviewed the provisions of IEC 410 and IEC 743, to which normative reference is made in the text, and has decided that they are acceptable for use
20、in conjunction with this standard. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document
21、comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages 2 to 30, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.iv blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61235 A
22、ugust 1995 ICS 29.120.10; 13.340.20 Descriptors: Live working, safety device, characteristics, tests, insulating tube, hollow tube English version Live working Insulating hollow tubes for electrical purposes (IEC 1235:1993, modified) Travaux sous tension Tubes creux isolants pour travaux lectriques
23、(CEI 1235:1993, modifie) Arbeiten unter Spannung Isolierte hohle Rohre fr elektrotechnische Zwecke (IEC 1235:1993, modifiziert) This European Standard was approved by CENELEC on 1995-03-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
24、or 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 obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three off
25、icial 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 Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical com
26、mittees of Austria, Belgium, 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 E
27、uropisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 61235:1995 EEN 61235:1995 BSI 23 December 2002 2 Foreword The text of the International Standard IEC 1235:1993, prepared by IEC TC 78, Tools
28、 for live working, together with common modifications prepared by the Technical Committee CENELEC TC 78, was submitted to the formal vote and was approved by CENELEC as EN 61235 on 1995-03-06. The following dates were fixed: For products which have complied with the relevant national standard before
29、 1996-03-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 2001-03-01. Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard,
30、Annex A, Annex B, Annex C, Annex D, Annex E and Annex ZA are normative and Annex F is informative. Annex ZA has been added by CENELEC. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1996-03-01 latest date b
31、y which the national standards conflicting with the EN have to be withdrawn (dow) 1996-03-01EN 61235:1995 BSI 23 December 2002 3 Section 1. General 1 Scope This International Standard is applicable to insulating hollow tubes made of synthetic materials and intended for tools and equipment for work o
32、n systems operating at voltages above 1 kV. Separate special technical standards give details of tests for fittings and attachments to these hollow tube terminal parts or complete tools. Other dimension such as tube diameters 64 mm, 77 mm and 100 mm are under consideration. Other manufacturing metho
33、ds are under consideration. 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, the editions indicated were valid. All normative documents are subject to r
34、evision, 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 registers of currently valid International Standards. IEC 50(151):197
35、8, International Electrotechnical Vocabulary Chapter 151: Electrical and magnetic devices IEC 60-1:1989, High-voltage test techniques Part 1: General definitions and test requirements IEC 212:1971, Standard conditions for use prior to and during the testing of solid electrical insulating materials I
36、EC 410:1973, Sampling plans and procedures for inspection by attributes IEC 743:1983, Terminology for tools and equipment to be used in live working 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 Terms defined in accordance with IEC 50(151) 3.1.1
37、type test a test performed on one or more devices made to a certain design to show that the design meets certain specificationsIEV 151-04-15 3.1.2 routine test a test to which each individual device is subjected during or after manufacture to ascertain whether it complies with certain criteria IEV 1
38、51-04-16 3.1.3 sampling test a test on a number of devices taken at random from a batchIEV 151-04-17 3.1.4 acceptance test a contractual test to prove to the customer that the device meets certain conditions of its specification IEV 151-04-20EN 61235:1995 4 BSI 23 December 2002 3.2 Terms defined in
39、accordance with IEC 410 3.2.1 minor defect a defect that is not likely to reduce materially the usability of the unit of product for its intended purpose, or is a departure from established standards having little bearing on the effective use or operation of the unit (see 2.1.3) 3.2.2 major defect a
40、 defect, other than critical, that is likely to result in failure, or to reduce materially the usability of the unit of product for its intended purpose (see 2.1.2) 3.2.3 critical defect a defect that judgment and experience indicate is likely to result in hazardous or unsafe conditions for individu
41、als using, maintaining or depending upon the product; or a defect that judgment and experience indicate is likely to prevent performance of the function of a major end item (see 2.1.1) 3.3 Definitions of special terms 3.3.1 reinforced tube tube which is especially designed in order to resist importa
42、nt mechanical strain, usually made of specific materials such as fibreglass (see Table 4, Table 7 and Table 9) 3.3.2 standard tube tube which may be submitted occasionally to mechanical loading and should be able to self-restore by the nature of the material itself (see Table 5, Table 7 and Table 9)
43、 3.3.3 light tube tube which has not been designed and manufactured to resist mechanical stresses except its own weight (see Table 6 and Table 8) 4 Classification 4.1 Mechanical category Hollow tubes are classified in three categories according to their mechanical characteristics. These categories a
44、re: reinforced tube, standard tube and light tube. In all three cases, the tubes shall comply with dielectric tests specified in this standard. 4.2 Electrical category There is only one electrical category. The electrical properties shall be the same for the three mechanical categories. NOTE Hollow
45、tubes should be used in areas having ambient temperature between 40 C and + 70 C.EN 61235:1995 BSI 23 December 2002 5 Section 2. Technical characteristics 5 Materials Hollow tubes shall be made of insulating material such as synthetic materials which may be reinforced with mineral or artificial fibr
46、es. 6 Diameters of tubes All diameters are included between 10 mm and 100 mm and preferred diameters are given in Table 1. Table 1 Preferred diameters External diameter Tolerance mm mm 10 a 0,5 15 a , 19 1 25, 32, 39, 51, 64 a , 77 a 1,5 100 a 2,5 a Mechanical test values for these diameters are und
47、er consideration.6 blankEN 61235:1995 BSI 23 December 2002 7 Section 3. Type tests 7 General To obtain approval for the product, the manufacturer shall provide: 10 lengths of 3 m for tubes of 19 mm diameter and larger; 10 lengths of 2,5 m for tubes with a diameter smaller than 19 mm, which will be r
48、etained by, or on behalf of, the customer. After visual inspection and a dimensional check of all the samples, these are divided into three batches from which the various test pieces are taken to undergo the different tests (three test pieces per test) as shown in Table 2. A batch shall be constitut
49、ed of tubes of the same diameter and category. Should any test piece fail to pass any one of the tests mentioned in the preceding table, the product is rejected. Once approval is granted, the customers stamp shall be placed on the reference specimen, the second test piece is returned to the manufacturer, and the first remains with the customer for reference purposes. Only those products that pass t
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