1、BRITISH STANDARD BS EN 61061-3-2:2002 IEC 61061-3-2:2001 Non-impregnated densified laminated wood for electrical purposes Part 3: Specifications for individual materials Sheet 2: Rings produced from beech veneer The European Standard EN 61061-3-2:2001 has the status of a British Standard ICS 17.220.
2、99; 29.035.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61061-3-2:2002 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 Strateg
3、y Committee on 14 February 2002 BSI 14 February 2002 ISBN 0 580 38859 X National foreword This British Standard is the official English language version of EN 61061-3-2:2001. It is identical with IEC 61061-3-2:2001. The UK participation in its preparation was entrusted by Technical Committee GEL/15,
4、 Material specifications, to Subcommittee GEL/15/3/6, Rigid laminated sheets, tubes and rods for industrial purposes, which 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
5、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 over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement inte
6、rnational or European publications referred to in this document 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 British Standard does not purport to inc
7、lude 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. aid enquirers to understand the text; present to the responsible international/Euro
8、pean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; 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, pa
9、ges 2 to 7, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61061-3-2 NORME EUROPENNE EUROPISCHE NORM October 2001 CENELEC European Committee for Electrotec
10、hnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung 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. E
11、N 61061-3-2:2001 E ICS 17.220.99; 29.035.01 English version Non-impregnated densified laminated wood for electrical purposes Part 3: Specifications for individual materials Sheet 2: Rings produced from beech veneer (IEC 61061-3-2:2001) Stratifis de bois densifi, non imprgns, usages lectriques Partie
12、 3: Spcifications pour matriaux particuliers Feuille 2: Anneaux raliss partir de placages de htre (CEI 61061-3-2:2001) Nicht-imprgniertes Kunstharzpressholz fr elektrotechnische Zwecke Teil 3: Anforderungen fr einzelne Werkstoffe Blatt 2: Ringe aus Rotbuchenfurnieren (IEC 61061-3-2:2001) This Europe
13、an Standard was approved by CENELEC on 2001-09-01. CENELEC members are bound to 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
14、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, French, German). A version in any other language made by translation under the responsibility of a CENELEC member
15、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, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherl
16、ands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Foreword The text of document 15C/1223/FDIS, future edition 1 of IEC 61061-3-2, 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
17、EN 61061-3-2 on 2001-09-01. The following dates were fixed: latest 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
18、 (dow) 2004-09-01 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 IEC 61061-3-2:2001 was approved by CENELEC as a European Standard without an
19、y modification. _ Page2 EN6106132:2001 2002yraurbeF31ISBBSI14February2002-16016-32 1002:CEI 3 INTRODUCTION This International Standard is one of a series which deals with non-impregnated densified laminated wood for electrical purposes. The series consists of three parts: Part 1: Definitions, design
20、ation and general requirements (IEC 61061-1) Part 2: Methods of test (IEC 61061-2) Part 3: Specifications for individual materials (IEC 61061-3) This standard gives one of the sheets comprising part 3 as follows: Sheet 2: Rings produced from beech veneer. Page3 EN6106132:2001 2002yraurbeF31ISBBSI14F
21、ebruary2002-16016-32 1002:CEI 4 NON-IMPREGNATED DENSIFIED LAMINATED WOOD FOR ELECTRICAL PURPOSES Part 3: Specifications for individual materials Sheet 2: Rings produced from beech veneer 1 Scope This sheet 2 of IEC 61061-3 specifies the requirements for individual types of rings of non- impregnated
22、densified laminated wood produced from beech veneer defined in IEC 61061-1. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this sheet of IEC 61061-3. For dated references, subsequent amendments to, or revisi
23、ons of, any of these publications do not apply. However, parties to agreements based on this sheet of IEC 61061-3 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
24、 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 61061-1, Non-impregnated densified laminated wood for electrical pur
25、poses Part 1: Definitions, designation and general requirements IEC 61061-2, Specification for non-impregnated, densified laminated wood for electrical purposes Part 2: Methods of test 3 Requirements In addition to the general requirements given in IEC 61061-1, the rings produced from beech veneer s
26、hall also comply with the requirements given in tables 1, 2, 3 and 4. Page4 EN6106132:2001 2002yraurbeF31ISBBSI14February2002-16016-32 1002:CEI 5 Table 1 Requirements for rings Type Property Test method in IEC 61061-2, subclause Unit Max., min. or range T2R T4R Remarks Thickness 5.1 mm See table 2 D
27、iameter mm See table 3 See note 1 Flatness 5.2 mm See table 4 Flexural strength perpendicular to the laminations Rings 1 000 mm in diameter 6.1 MPa Min. 100 140 See note 2 Flexural strength perpendicular to the laminations Rings 1 000 mm in diameter 6.1 MPa Min. 90 125 See note 2 Apparent modulus of
28、 elasticity perpendicular to the laminations 6.2 GPa Min. 10 13 See note 2 Compressibility perpendicular to the laminations C C rev 6.4 % % Max. Min. 5 70 3 70 Proof pressure of 20 MPa Impact strength perpendicular to laminations 6.5 kJ/m Min. 25 35 See note 2 Shearing strength test for glue line bo
29、nd 6.6 MPa Min. 7 9 Electric strength perpendicular to the laminations 7.1 kV/mm Min. 10 10 For material thicknesses greater than 3 mm, the specimen is reduced to 3 mm according to IEC 60243-1 Breakdown voltage parallel to the laminations 7.1 kV Min. 50 50 Apparent density 9.1 g/cm 3 Range 0,9 1,1 1
30、,2 1,3 Moisture content 9.3 % Max. 8 8 Shrinkage after drying Circumference Thickness 9.4 % % Max. Max. 0,5 3 0,5 3 Oil absorption 9.5 % Min. 15 5 Contamination of liquid dielectrics Change in dissipation factor 9.7 Max. 0,1 0,1 NOTE 1 Use a steel tape graduated in divisions of 0,5 mm or less to mea
31、sure the circumference of the ring and from this measurement, calculate the diameter. Any other method which gives the same results may be used to determine the diameter but, in case of dispute, the specified method is used. NOTE 2 Test in accordance with relevant clause of IEC 61061-2. Cut the spec
32、imens tangentially in the plane of the ring. Page5 EN6106132:2001 2002yraurbeF31ISBBSI14February2002-16016-32 1002:CEI 6 Table 2 Tolerances for nominal thickness Table 2a Tolerances for nominal thicknesses for un-machined pressed rings Nominal thickness mm Tolerance for both types mm 10 1,4 10 15 1,
33、6 15 20 1,8 20 25 2,0 25 30 2,2 30 40 2,6 40 60 3,0 60 100 4,0 Table 2b Tolerance for nominal thickness for machined rings Nominal thickness mm Tolerance for both types mm 50 1,0 50 . 100 2,0 Table 3 Tolerance for nominal diameter Nominal diameter mm Tolerance for both types mm 250 500 1,0 500 1 000
34、 2,0 1 000 2 000 3,0 2 000 4,0 Table 4 Flatness Maximum departure at any point of the upper surface of rings from lightweight straight-edge for a length of: mm Nominal thickness mm 500 mm 1 000 mm 15 2,5 6 15 25 2,0 4 25 60 1,5 2 60 1,0 1,5 _ Page6 EN6106132:2001 2002yraurbeF31ISBBSI14February2002An
35、nex 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. These normative references are cited at the appropriate places in the text and t
36、he publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (incl
37、uding amendments). NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60243-1 1998 Electrical strength of insulating materials - Test methods Part 1: Tests at power frequencies EN 602
38、43-1 1998 IEC 61061-1 1) Non-impregnated densified laminated wood for electrical purposes Part 1: Definitions, designation and general requirements EN 61061-1 1998 2) IEC 61061-2 1) Part 2: Methods of test EN 61061-2 2001 2)1)undated reference. 2)valid edition at date of issue. Page7 EN6106132:2001
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