BS EN 60819-2-2002 Non-cellulosic papers for electrical purposes - Methods of test《电工用非纤维素纸 试验方法》.pdf

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1、BRITISH STANDARD BS EN 60819-2:2002 IEC 60819-2:2001 Non-cellulosic papers for electrical purposes Part 2: Methods of test The European Standard EN 60819-2:2001 has the status of a British Standard ICS 29.035.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 60819-2:2002

2、 This British 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 22 January 2002 BSI 22 January 2002 ISBN 0 580 38858 1 National foreword This British Sta

3、ndard is the official English language version of EN 60819-2:2001. It is identical with IEC 60819-2:2001. The UK participation in its preparation was entrusted by Technical Committee GEL/15, Material specification, to Subcommittee GEL/15/3/10, Flexible composites and textiles, which has the responsi

4、bility 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 during the change

5、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 Standards Catalogue under the section entitled “Inte

6、rnational Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British 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

7、 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; monitor related internation

8、al 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 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last i

9、ssued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60819-2 NORME EUROPENNE EUROPISCHE NORM September 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normun

10、g Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60819-2:2001 E ICS 29.035.10 English version Non-cellulosic papers for electrical purposes Part 2: Methods of test (

11、IEC 60819-2:2001) Papiers non cellulosiques usages lectriques Partie 2: Mthodes dessai (CEI 60819-2:2001) Vliesstoffe auf Kunststofffaserbasis fr elektrotechnische Zwecke Teil 2: Prfverfahren (IEC 60819-2:2001) This European Standard was approved by CENELEC on 2001-09-01. CENELEC members are bound t

12、o comply with the 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 Centr

13、al 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 Central Secretariat has the same sta

14、tus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 91806-2:1002

15、 - 2 - Foreword The text of document 15C/1183/FDIS, future edition 1 of IEC 60819-2, 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 60819-2 on 2001-09-01. The following dates were fixed: latest

16、date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2004-09-01 Annexes designated “normative“ are part of the bo

17、dy 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 IEC 60819-2:2001 was approved by CENELEC as a European Standard without any modification. _ Page2 EN608192:2001 BSI21January20022002yraunaJ22IS

18、B 4BSI22January2002CONTENTS INTRODUCTION 4 1 Scope 5 2 Normative references. 5 3 General notes on tests. 5 4 Thickness 6 5 Grammage (mass per unit area, basic mass) . 6 6 Dissipation factor and permittivity 6 7 Tensile strength and elongation . 7 8 Edge-tearing resistance. 7 8.1 Test apparatus . 7 8

19、.2 Test pieces. 7 8.3 Procedure. 8 8.4 Results . 8 9 Shrinkage due to heating in air 8 9.1 Test apparatus . 8 9.2 Test pieces. 8 9.3 Procedure. 9 9.4 Results . 9 10 Electric strength. 9 10.1 Apparatus. 9 10.2 Test pieces. 9 10.3 Procedure10 10.4 Results 10 11 Conductivity of aqueous extract 10 11.1

20、Test apparatus 10 11.2 Reagents.10 11.3 Procedure11 12 Percentage of moisture content 12 13 Loss of mass on ignition (LOI) 12 Figure 1 Edge-tearing stirrup13 Annex ZA (normative) Normative references to international publications with their corresponding European publications14 Page3 EN608192:2001 2

21、002yraunaJ22ISBBSI22January2002INTRODUCTION This International Standard is one of a series which deals with non-cellulosic papers for electrical purposes. The series consists of three parts: Part 1: Definitions and general requirements (IEC 60819-1) Part 2: Methods of test (IEC 60819-2) Part 3: Spec

22、ifications for individual materials (IEC 60819-3) Page4 EN608192:2001 BSI21January20022002yraunaJ22ISB 6BSI22January2002NON-CELLULOSIC PAPERS FOR ELECTRICAL PURPOSES Part 2: Methods of test 1 Scope This part of IEC 60819 contains the test methods to be used in testing non-cellulosic papers for elect

23、rical purposes to meet the requirements prescribed in the specification sheets of IEC 60819-3. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60819. For dated references, subsequent amend- m

24、ents to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60819 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition o

25、f the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60243-1:1998, Electrical strength of insulating materials Test methods Part 1: Tests at power frequencies IEC 60250:1969, Recommended methods for the determination

26、of the permittivity and dielectric dissipation factor of electrical insulating materials at power, audio and radio frequencies including metre wavelengths IEC 60819-3 (all parts), Specification for non-cellulosic papers for electrical purposes Part 3: Specifications for individual materials ISO 186:

27、1994, Paper and board Sampling to determine average quality ISO 534:1988, Paper and board Determination of thickness and apparent bulk density or apparent sheet density ISO 536:1995, Paper and board Determination of grammage ISO 1924 (all parts), Paper and board Determination of tensile properties 3

28、 General notes on tests In this standard, reference is made in several places to ISO publications 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 taken from the ISO publ

29、ication itself. In this standard, the definitions of “specimen” and “test piece” as defined in ISO 186 are used. specimen: a rectangle of paper or board cut to given dimensions from sheets drawn from selected units. NOTE Adapted from 3.4 of ISO 186. test piece: the quantity of paper or board on whic

30、h the 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. NOTE Adapted from 3.6 of ISO 186. Page5 EN608192:2001 BSI21January20022002yraunaJ22ISB 7BSI22January20023.1 Unless otherwise specified, cut the

31、specimen and condition the test pieces for not less than 16 h in an atmosphere of (23 2) C and (50 5) % r.h. Perform the tests on the test pieces in this atmosphere. 3.2 In cases of dispute use the following procedure. Prior to conditioning, dry all specimens at 70 C to a moisture content below 4 %.

32、 Condition these pieces for a minimum of 18 h at (23 1) C and (50 2) % r.h. Unless otherwise specified, make tests on three specimens. 4 Thickness 4.1 Measure thickness on a single test piece in accordance with ISO 534 using a precision dial micrometer that applies to the test piece a static load eq

33、uivalent to (100 10) kPa. 4.2 Exceptions to ISO 534 Make one determination on each of the three conditioned test pieces. Take the central value as the result of the thickness of a single sheet; the other two determinations shall be reported. Use the millimetre as the unit of thickness. Reporting of

34、the standard deviation is optional. 5 Grammage (mass per unit area, basic mass) 5.1 Measure the grammage in accordance with ISO 536. Principle: The area of each test piece and its mass are measured on conditioned test pieces. Mass per unit area is calculated. 5.2 Exceptions to ISO 536 Ignore clauses

35、 5 and 6. Make one determination on each of the three conditioned test pieces having an area of not less than 0,05 m 2 . Determine the mass to an accuracy of 0,5 %. Take the central value as the result; report the other two values. 6 Dissipation factor and permittivity 6.1 Use any appropriate appara

36、tus described in IEC 60250 for measurement of dissipation factor and permittivity. Test at least three specimens. Unless otherwise specified, condition test pieces as per 3.1. 6.2 Unless otherwise specified, test at room temperature in accordance with 3.1 using alternating voltage at a frequency bet

37、ween 48 Hz and 62 Hz which provides a stress of approximately 0,4 MV/m. 6.3 Report the median values for dissipation factor and permittivity. Page6 EN608192:2001 BSI21January20022002yraunaJ22ISB 8BSI22January20027 Tensile strength and elongation 7.1 Determine tensile strength and elongation in accor

38、dance with ISO 1924 unless otherwise specified in the specific sheets of IEC 60819-3. Principle: Test pieces approximately 15 mm wide and 250 mm long, cut in each of the principal directions of the paper, are conditioned, clamped in a tension-testing machine, and exposed to tensile forces sufficient

39、 to cause the test piece to break. 7.2 Exceptions to ISO 1924 Test nine test pieces cut so that the long dimension is parallel to the machine direction of the paper. These results are MD tensile strength. Test nine test pieces cut so that the long dimension is parallel to the cross direction of the

40、paper. These results are CD tensile strength. Take the central value of the nine determinations as the result for each direction. Report the highest and the lowest values. Alternatively, the results may be expressed as breaking strength in metres rounded off to the nearest 100 m. 8 Edge-tearing resi

41、stance 8.1 Test apparatus The test apparatus consists of an edge-tear stirrup frame (see figure 1); a V-notched plate with a thickness of (1,25 0,05) mm, for use with the stirrup frame; a V-notched plate with a thickness of (2,50 0,05) mm, for use with the stirrup frame; a tension-testing machine in

42、 accordance with clause 7. 8.2 Test pieces Cut nine test pieces 15 mm to 25 mm wide and at least 250 mm long in such a way that the long direction is parallel to the machine direction of the paper. Label these as MD test pieces. Cut nine additional test pieces having the same dimensions but with the

43、 long direction parallel to the cross direction of the paper. Label these as CD test pieces. Examine the edges of each test piece. Discard and replace any test pieces which contain a nick or other defects due to the cutting that would influence the test results. Condition and test all test pieces in

44、 accordance with 3.1. Page7 EN608192:2001 BSI21January20022002yraunaJ22ISB 9BSI22January20028.3 Procedure If papers having a thickness of 0,75 mm or less are to be tested, attach the 1,25 mm thick plate to the edge tear stirrup frame. If thicker papers are to be tested, attach the 2,50 mm thick plat

45、e. Fasten the thin tang of the stirrup frame in the lower clamp (see note) of the tension-testing machine so that the vertical centre line of the stirrup coincides with the line connecting the mid-points of the upper and lower clamps of the testing machine, and the sides of the V-notch are symmetric

46、ally located relative to the line through the mid- points of the clamps. NOTE The stirrup frame may be fastened to the upper clamp, if desired. This arrangement will require re- calibration of the zero point of the machine to compensate for the mass of the stirrup assembly. Place the lower clamp of

47、the machine such that the lower edge of the upper clamp is about 90 mm above the V-notched plate. Thread the test piece through the stirrup, under the plate, and bring the two ends together and fasten them in the upper clamp. This procedure will result in the elimination of most of the slack in the

48、strip. Take care not to apply any tearing forces to the test piece during this step of the procedure. Make the application of the first increments of load to the test piece very slowly so as to minimize abnormal strains due to inertia effects. Adjust the applied load to a rate that will produce tear

49、ing within 5 s to 15 s. At the time of observation of the first tearing in the strip, record the load in newtons (N). 8.4 Results Report the central values for each of the two directions of the paper. Include the width and thickness of the test pieces and the rate of loading. The unit for edge-tearing resistance is the newton (N). Report the highest and lowest values.