1、BRITISH STANDARDBS EN 60371-3-2:2006Insulating materials based on mica Part 3: Specifications for individual materials Sheet 2: Mica paperThe European Standard EN 60371-3-2:2006 has the status of a British StandardICS 29.035.10; 29.035.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g4
2、4g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60371-3-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006ISBN 0 580 479
3、67 6National forewordThis British Standard is the official English language version of BS EN 60371-3-2:1995 which is withdrawn.GEL/15, Standards on specifications for electrical insulating materials, which has the responsibility to: aid enquirers to understand the text; present to the responsible in
4、ternational/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its s
5、ecretary.Cross-referencesThe 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 Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Cata
6、logue or of British Standards Online.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 pagesThis document c
7、omprises a front cover, an inside front cover, the EN title page, pages 2 to 11 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEN 60371-3-2:2006. It is identical with IEC 60371-
8、3-2:2005. It supersedes The UK participation in its preparation was entrusted to Technical Committee EUROPEAN STANDARD EN 60371-3-2 NORME EUROPENNE EUROPISCHE NORM February 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europische
9、s Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60371-3-2:2006 E ICS 29.035.10; 29.035.50 Supersedes EN 60371-3-2:1995English v
10、ersion Insulating materials based on mica Part 3: Specifications for individual materials Sheet 2: Mica paper (IEC 60371-3-2:2005) Matriaux isolants base de mica Partie 3: Spcifications pour matriaux particuliers Feuille 2: Papier de mica (CEI 60371-3-2:2005) Isoliermaterialien aus Glimmer Teil 3: B
11、estimmungen fr einzelne Materialien Blatt 2: Glimmerpapier (IEC 60371-3-2:2005) This European Standard was approved by CENELEC on 2005-12-01. 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
12、 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, French, German). A vers
13、ion 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, Belgium, Cyprus, the Czech R
14、epublic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 60371-3-2:2006 - 2 - Foreword The text of
15、 document 15/227/FDIS, future edition 2 of IEC 60371-3-2, prepared by IEC TC 15, Standards on specifications for electrical insulating materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60371-3-2 on 2005-12-01. This European Standard supersedes EN 60371-3-2:1
16、995. The main changes with regard to EN 60371-3-2:1995 include adjustments to align this standard with changes included in the latest edition of EN 60371-2. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national sta
17、ndard or by endorsement (dop) 2006-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-12-01 This European Standard makes reference to International Standards. Where the International Standard referred to has been endorsed as a European Standard
18、or a home-grown European Standard exists, this European Standard shall be applied instead. Pertinent information can be found on the CENELEC web site. _ Endorsement notice The text of the International Standard IEC 60371-3-2:2005 was approved by CENELEC as a European Standard without any modificatio
19、n. _ 3 CONTENTS 1 Scope 5 2 Normative references 5 3 General 5 3.1 Classification and designation 5 3.2 Standard forms of delivery 6 3.3 Marking 6 4 General requirements .6 4.1 Conditions as received . 6 4.2 Properties 7 5 Tests 7 5.1 Test specimens 7 Figure 1 Mica paper Air porosity . 9 Figure 2 Mi
20、ca paper Penetration . 10 Figure 3 Mica paper Tensile strength . 11 Table 1 Dimensions of test specimens .7 Table 2 Requirements for mica paper .8 INTRODUCTION.4 EN 60371-3-2:2006 4 INTRODUCTION This part of IEC 60371 forms part of a series which deals with insulating materials built up from mica sp
21、littings or mica paper with or without reinforcement, and with mica paper in its pure state for use in electrical equipment. IEC 60371 consists of three parts under the main title Specification for insulating materials based on mica: Part 1: Definitions and general requirements Part 2: Methods of te
22、st Part 3: Specifications for individual materials This standard contains one of the sheets comprising part 3, as follows: Sheet 2: Mica paper EN 60371-3-2:2006 INSULATING MATERIALS BASED ON MICA Part 3: Specifications for individual materials Sheet 2: Mica paper 1 Scope This part of IEC 60371 gives
23、 requirements for electrical insulating materials made from mica paper which is to be processed for built-up mica materials according to IEC 60371-1, such as rigid flat mica materials, flexible mica materials, curable flexible mica materials and shaped pieces. Materials which conform to this specifi
24、cation meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. 2 Normative references The following r
25、eferenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60371-1:2003, Specification for insulating materials based o
26、n mica Part 1: Definitions and general requirements IEC 60371-2:2004, Specification for insulating materials based on mica Part 2: Methods of test IEC 60554-2:2001, Cellulosic papers for electrical purposes Part 2: Methods of test IEC 60589:1977, Methods of test for the determination of ionic impuri
27、ties in electrical insulating materials by extraction with liquids ISO 534:2005, Paper and board Determination of thickness and apparent bulk density or apparent sheet density ISO 536:1995, Paper and board Determination of grammage ISO 5636-5:2003, Paper and board Determination of air permeance and
28、air resistance (medium range) Part 5: Gurley method 3 General 3.1 Classification and designation Mica papers are classified in several types depending on the nature of the mica minerals used and the manufacturing procedure. These types have different characteristics as regards thickness, mass per un
29、it area and physical and chemical properties. 5 EN 60371-3-2:2006 The nature of the mica minerals is designated by the symbols MPM or MPP, as follows: MPM = mica paper, muscovite; MPP = mica paper, phlogopite. Since it would not be possible to harmonize the many-sided interests connected with mica p
30、aper made by diverse procedures, the following four main classes have been chosen: Class 1 MPM: mica paper based on calcined muscovite, chemical process; Class 2 MPM: mica paper based on calcined muscovite, mechanical process; Class 3 MPM: mica paper based on uncalcined muscovite; Class 4 MPP: mica
31、paper based on uncalcined phlogopite. The above classes are distinguished from each other by characteristic properties such as porosity, penetration and tensile strength. These properties are plotted versus mass per unit area in Figures 1 to 3 showing the possible ranges of the four different classe
32、s. NOTE The base materials for MPM-types classes 1 and 2 can be blended in order to achieve a mica paper with characteristics lying between class 1 and class 2 types, and should be subject to contract. The letter symbols for the nature of the mica minerals are followed by four digits indicating the
33、class (first digit) and the mass per unit area (second to fourth digits). Example: designation of mica paper based on calcined muscovite (MPM), with a mass per unit area of 50 g/m2, whose properties meet the requirements given in Table 2 for class 1: Mica paper - IEC 60371-3-2 MPM-1050. 3.2 Standard
34、 forms of delivery Mica papers may be supplied in rolls or sheet form. 3.3 Marking Rolls and packets of mica paper supplied as complying with this specification shall be marked with the following: supplier, manufacturer and trade name; batch/roll number; designation in accordance with 3.1; net mass
35、of roll or packet. The marks shall be durable and fixed in such a manner that they can be read until the mica paper is completely unrolled, or the packet has been completely used. 4 General requirements The mica paper shall comply with the requirements of IEC 60371-1 and with this standard. 4.1 Cond
36、itions as received Mica paper shall be supplied wound on cores sufficiently tightly to enable the material to be unwound smoothly without telescoping. On receipt, the roll end shall form a plane circular surface with no apparent telescoping. The difference between the roll width and the paper width
37、shall be subject to contract between purchaser and supplier. EN 60371-3-2:2006 - 6 - The width of the rolls and their core and outer diameter shall be subject to contract between purchaser and supplier. The materials should be packaged to ensure adequate protection during transport, handling and sto
38、rage. Any necessary packing requirements should be subject to the purchase contract. Mica paper in sheets or when unrolled shall be flat and smooth, free from defects such as compressed spots, holes, creases and contamination, e.g. large hard mica particles and electrically conductive inclusions. Sp
39、lices in mica paper are not acceptable. 4.2 Properties When tested according to Clause 5, the measured values shall conform with the requirements given in Table 2. 5 Tests 5.1 Test specimens The number of test specimens necessary for each test is indicated in the test method. If delivered in rolls,
40、the two outermost layers of mica paper shall be removed prior to taking a sample of about 1 m2. If mica paper is delivered in sheets, one sheet constitutes the specimen which has to meet the requirements for the respective batch. 5.1.1 Sampling and preparation of test specimens For any test, the spe
41、cimens shall be cut in such a manner that the full width of the material is represented. The cut edge shall be straight and free from tears and cracks. Die cutting is preferred when possible. 5.1.2 Dimensions of test specimens The dimensions of the test specimens for each test are given in Table 1.
42、The mean thickness is the average of ten thickness measurements made on the test sheet or sample, at approximately equispaced locations across the diagonal of the sheet or sample. Table 1 Dimensions of test specimens Test method Test specimens Requirements Publication Clause or subclause Dimensions
43、mm Tolerances mm Mass per unit area Conductivity of the aqueous extract Loss of mass at 500 C IEC 60554-2 IEC 60589 IEC 60371-2 3 7.4.1 100 100 alternatively 113 0,2 0,2 Tensile strength IEC 60554-2 5 15 250 0,2 Air porosity ISO 5636-5 50 120 1 Penetration IEC 60371-2 20 75 75 1 7 EN 60371-3-2:2006
44、Table2RequirementsformicapaperMass per unitarea Thickness Class Range of mass per unitareaPreferred typesNominal Admissibledeviation between mean value and nominalvalue Admissibledeviation between individual values and nominalvalueExpectedthickness Maximum difference between individual readingsand m
45、eanofallvaluesAirporosityImpreg-nation timeNon-sieveside Loss of mass g/m2g/m2% % m %s/100 mlsConduc-tivityofan aqueous extract S/cm(max.)% (max.)Tensilestrength N/cmwidth Testmethod according toIEC 60554-2,Clause 6 and ISO 536 IEC 60554-2,5.1 and ISO 534 ISO 5636-5 IEC 60371-2,Clause 20 IEC 60589IE
46、C60371-2,7 4.1 IEC60554-2,Clause 8 1 50 . 120 MPM1050 MPM1060 MPM1075 50 60 75 4645 50 60 10 Figure 1 Figure 2 70 0,5 Figure 3 2 120 . 300 MPM2120 MPM2150 MPM2180 MPM2250 120 150 180 250 4790 110 130 180 14 Figure 1 Figure 2 20 0,5 Figure 3 3 80 . 560 MPM3080 MPM3120 MPM3160 MPM3250 MPM3370 80 120 1
47、60 250 370 57. 121)55 85 105 160 240 15 Figure 1 Figure 2 10 0,4 Figure 3 4 60 . 250 MPP4080 MPP4120 MPP4160 80 120 160 57. 121)60 75 95 15 Figure 1 Figure 2 10 0,4 Figure 3 1) The figuresindicatethatthe maximumdeviationbetween individualvaluesofthicknessandthe nominalvaluefortheseclassesofmicapaper
48、 mayrange from7 %to12%,dependentuponthe specificgrade ofmaterial.The actualadmissible deviation shallbesubjecttocontractbetween purchaser and supplier.2) Air Porosityshallbe measured inaccordancewithISO 5636/5:2003.clause3.2 “AirResistance”.Resultsshallbeexpressed inseconds per100ml.EN 60371-3-2:200
49、6 - 8 - 10 000 5 000 1 000 500 100 1000 200 300 400 500 600 g/m2s/100 ml Mass per unit area MPM class 1 MPM class 2 MPP class 4 MPM class 3 IEC 1703/05 Figure 1 Mica paper Air porosity EN 60371-3-2:2006 9 EN 60371-3-2:2006 10 400 MPM class 1 MPM class 2 MPP class 4 s 300 200 100 0 0 100 200 300 400 500 600 MPM class 3 g/m2Mass per unit area IEC 1704/05 Figure 2 Mica paper Penetration 11 EN 60371-3-2:2006 15 MPM class 1 N/cm 10 5 0 0 100 20
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