BS EN 60554-2-2002 Cellulosic papers for electrical purposes - Methods of test《电工用纤维素纸 试验方法》.pdf

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1、BRITISH STANDARD BS EN 60554-2:2002 Cellulosic papers for electrical purposes Part 2: Methods of test The European Standard EN 60554-2:2002 has the status of a British Standard ICS 17.220.99; 29.035.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 60554-2:2002 This Brit

2、ish Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 19 June 2002 BSI 19 June 2002 ISBN 0 580 39809 9 National foreword This British Standard is the off

3、icial English language version of EN 60554-2:2002. It is identical with IEC 60554-2:2001. It supersedes BS 5626-2:1979 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/15, Insulating material, to Subcommittee GEL/15/3/9, Paper and press board, whic

4、h has the responsibility to: 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 been renumbered as IEC 60027-1. For a period of time

5、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 be found in the BSI Catalogue under the section entitl

6、ed “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 of this publication are responsible for their correct ap

7、plication. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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;

8、 monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 37 and a back cover. The BSI copyright date displayed in this document indicates when the document was

9、last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60554-2 NORME EUROPENNE EUROPISCHE NORM April 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Norm

10、ung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60554-2:2002 E ICS 17.220.99;29.035.10 English version Cellulosic papers for electrical purposes Part 2: Methods o

11、f test (IEC 60554-2:2001) Papiers cellulosiques usages lectriques Partie 2: Mthodes dessai (CEI 60554-2:2001) Zellulosepapiere fr elektrotechnische Zwecke Teil 2: Prfverfahren (IEC 60554-2:2001) This European Standard was approved by CENELEC on 2002-04-01. CENELEC members are bound to comply with th

12、e CEN/CENELEC 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 obtained on application to the Central Secretariat o

13、r 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 Central Secretariat has the same status as the offic

14、ial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 65504-:20022 - - 2 Fo

15、reword The text of document 15C/1264/FDIS, future edition 2 of IEC 60554-2, prepared by SC 15C, Specifications, of IEC TC 15, Insulating materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60554-2 on 2002-04-01. The following dates were fixed: latest date by w

16、hich the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-04-01 Annexes designated “normative“ are part of the body of the

17、 standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60554-2:2001 was approved by CENELEC as a European Standard without any modification. _ 2egaP 2002:245506NE 2002enuJ42ISB Page2 EN605542:2002 BSI19J

18、une2002-455062 1002:CEI 3 CONTENTS INTRODUCTION.61 Scope.72 Normative references73 Definitions 84 General notes on tests85 Thickness.9 5.1 Determination of the thickness of single sheets of paper (ISO 534) 9 5.2 Determination of mean thickness of paper .96 Substance (mass per square metre, basic wei

19、ght or grammage) .97 Apparent density.108 Tensile strength and elongation 109 Internal tearing resistance.10 10 Edge-tearing resistance 11 10.1 Test apparatus 11 10.2 Test pieces11 10.3 Procedure11 10.4 Results12 11 Bursting strength 12 12 Folding endurance 12 12.1 Test apparatus 12 12.2 Test pieces

20、12 12.3 Procedure12 12.4 Results12 13 Moisture content.12 14 Ash content 13 15 Conductivity of aqueous extract 13 15.1 Test apparatus 13 15.2 Procedure13 15.3 Results14 16 pH of aqueous extract.14 16.1 Test apparatus 14 16.2 Procedure14 16.3 Results14 17 Chloride content of aqueous extract 15 17.1 M

21、ethod 1 .15 17.2 Method 2 .16 18 Sulphate content.17 3egaP 2002:245506NE 2002enuJ42ISB Page3 EN605542:2002 BSI19June2002-455062 1002:CEI 4 19 Conductivity of organic extract 17 19.1 Test apparatus 17 19.2 Procedure18 19.3 Results18 20 Determination of sodium and potassium content; flame atomic absor

22、ption spectrometric method19 21 Air permeability.19 21.1 Test apparatus 19 21.2 Test pieces20 21.3 Procedure20 21.4 Results20 22 Rate of water absorption (wicking) 20 22.1 Principle 20 22.2 Reagent 20 22.3 Apparatus20 22.4 Conditioning 21 22.5 Test pieces21 22.6 Procedure21 22.7 Results22 22.8 Test

23、report.22 23 Oil absorption (modified Cobb method) .22 23.1 Test apparatus 22 23.2 Test pieces23 23.3 Procedure23 23.4 Results23 24 Electric strength24 24.1 Test apparatus 24 24.2 Test pieces24 24.3 Procedure24 24.4 Results24 24.5 Test method using d.c. voltage .24 25 Dissipation factor and permitti

24、vity of unimpregnated paper 26 25.1 Test apparatus 26 25.2 Test pieces27 25.3 Procedure27 25.4 Results28 26 Conducting paths28 26.1 Method 1 .28 26.2 Method 2 .29 27 Heat stability.31 27.1 Internal tearing resistance31 27.2 Bursting strength .31 27.3 Degree of polymerization .31 4egaP 2002:245506NE

25、2002enuJ42ISB Page4 EN605542:2002 BSI19June2002-455062 1002:CEI 5 Figure 1 Edge tear stirrup.32 Figure 2a Overview 33 Figure 2b Details (modifications required to Cobb absorbency tester) .33 Figure 2 Test apparatus for oil absorbency .33 Figure 3 Diagrammatic arrangement of test apparatus for conduc

26、ting particles .34 Figure 4 Test apparatus .34 Figure 5 Water absorbency apparatus 35 Annex ZA (normative) Normative references to international publications with their corresponding European publications 36 5egaP 2002:245506NE 2002enuJ42ISB Page5 EN605542:2002 BSI19June2002-455062 1002:CEI 6 INTROD

27、UCTION IEC 60554 consists of the following parts, under the general title: Cellulosic papers for electrical purposes. Part 1: Definition and general requirements Part 2: Methods of test Part 3: Specifications for individual materials 6egaP 2002:245506NE 2002enuJ42ISB Page6 EN605542:2002 BSI19June200

28、2-455062 1002:CEI 7 CELLULOSIC PAPERS FOR ELECTRICAL PURPOSES Part 2: Methods of test 1 Scope This part of IEC 60554 applies to cellulosic papers for electrical purposes. It specifies the methods of test to be used in testing cellulosic papers for electrical purposes to meet the requirements prescri

29、bed in the specification sheet of IEC 60554-3. In this standard, reference is made in several places to ISO standards accompanied by a short description of the method used. It is to be understood that this short description is meant for identification purposes only and that all details should be tak

30、en from the ISO standard itself. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60554. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply

31、. However, parties to agreements based on this part of IEC 60554 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and

32、 ISO maintain registers of currently valid International Standards. IEC 60216: Guide for the determination of thermal endurance properties of electrical insulating materials IEC 60243-1: Electric strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60247:1978, Measure

33、ment of relative permittivity, dielectric dissipation factor and d.c. resistivity of insulating liquids IEC 60250:1969, Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including m

34、etre wavelengths IEC 60296:1982, Specification for unused mineral insulating oils for transformers and switchgear IEC 60450:1974, Measurement of the average viscometric degree of polymerization of new and aged electrical papers IEC 60554-3, Cellulosic papers for electrical purposes Part 3: Specifica

35、tions for individual materials ISO 287:1985, Paper and board Determination of moisture content Oven-drying method ISO 534:1988, Paper and board Determination of thickness and apparent bulk density or apparent sheet density 7egaP 2002:245506NE 2002enuJ42ISB Page7 EN605542:2002 BSI19June2002-455062 10

36、02:CEI 8 ISO 535:1991, Paper and board Determination of water absorptiveness Cobb method ISO 536:1995, Paper and board Determination of grammage ISO 1924-1:1992, Paper and board Determination of tensile properties Part 1: Constant rate of loading method ISO 1924-2:1994, Paper and board Determination

37、 of tensile properties Part 2: Constant rate of elongation method ISO 1974:1990, Paper Determination of tearing resistance (Elmendorf method) ISO 2144:1997, Paper, board and pulps Determination of residue (ash) on ignition at 900 degrees C ISO 2758:1983, Paper Determination of bursting strength ISO

38、9964-3:1993, Water quality Determination of sodium and potassium Part 3: Determination of sodium and potassium by flame emission spectrometry 3 Definitions For the purpose of this part of IEC 60554, the following definitions apply. 3.1 specimen rectangle of paper cut to given dimensions from a reel

39、or a sheet drawn from selected units 3.2 test piece quantity of paper on which each single determination is carried out in accordance with the method of test. It may be taken from a specimen; in some instances it may be the specimen itself 4 General notes on tests Unless otherwise specified, the spe

40、cimen, after being cut, shall be conditioned for not less than 16 h in an atmosphere of 23 C 2 K and 50 % 5 % relative humidity. Test pieces are cut from the specimen and tested in this atmosphere. In case of dispute, the conditioning atmosphere shall be 23 C 1 K and 50 % 2 % relative humidity and s

41、hall be approached from the dry side (after drying at 70 C to a moisture content less than 4 %). Unless otherwise specified, the number of specimens shall be three. Unless otherwise specified, the central values of the measurements shall be taken as the result and the highest and lowest values shall

42、 be reported. 8egaP 2002:245506NE 2002enuJ42ISB Page8 EN605542:2002 BSI19June2002-455062 1002:CEI 9 5 Thickness Thickness shall be measured in accordance with ISO 534 with the exceptions given below. 5.1 Determination of the thickness of single sheets of paper (ISO 534) a) Principle The method is ba

43、sed on the use of a precision dial micrometer to measure the thickness of a single sheet when a static load is applied. The static load to be applied shall correspond to a pressure of 100 kPa 10 kPa. b) Exceptions The test shall be carried out on three conditioned test pieces, one determination bein

44、g made on each of the three test pieces. One determination consists in five measurements, one at each corner and one in the centre of the test piece. The results are given in microns. Where thickness is determined across the width to establish the variation over the width, the details of this proced

45、ure will be found in IEC 60554-3. 5.2 Determination of mean thickness of paper Principle The method is based on the use of a precision dial micrometer to measure the thickness of a stack composed of a minimum of five sheets. The static load to be applied shall correspond to a pressure of 100 kPa 10

46、kPa. The test shall be carried out on three conditioned test pieces, each composed of a minimum of five sheets measuring 250 mm 250 mm taken from one single specimen, one determination being made on each of the three test pieces. One determination consists of five measurements, one at each corner an

47、d one in the centre of the test piece. For narrow material where the width is less than the stipulated 250 mm, the five measurements on each stack shall be made at approximately equal intervals on a specimen measuring 400 mm in length. The results are given in terms of the thickness of a single shee

48、t in microns. Where thickness is determined across the width to establish the variation over the width, the details of this procedure will be found in IEC 60554-3. 6 Substance (mass per square metre, basic weight or grammage) Paper grammage shall be measured according to the method described in ISO 536 with the following exceptions: clauses 5 and 6 of ISO 536 are ignored; 9egaP 2002:245506NE 2002enuJ42ISB Page9 EN605542:2002 BSI19June2002-455062 1002:CEI 01 the test shall be carried out on three conditioned test pieces, one determination being made on each of the three test pieces; the mas