1、BRITISH STANDARD BSEN 60674-3-7:1998 IEC674-3-7: 1992 Incorporating Amendment No. 1 to BS7290-3.7:1995 (renumbers the BS as BS EN 60674-3-7: 1998) Specification for plastic films for electrical purposes Part 3: Specifications for individual materials Sheet 7: Requirements for fluoroethylene-propylen
2、e (FEP) films used for electrical insulation The European Standard EN60674-3-7:1998 has the status of a British Standard ICS 29.035.20BSEN60674-3-7:1998 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standa
3、rds Board and comesintoeffect on 15 July1995 BSI 05-1999 The following BSI references relate to the work on this standard: Committee reference GEL/15/3 Draft announced in BSI News, April 1995 ISBN 0 580 24329 X Committees responsible for this British Standard The preparation of this British Standard
4、 was entrusted by Technical Committee GEL/15, Insulating material, to Subcommittee GEL/15/3, Materialspecifications, upon which the following bodies were represented: Adhesive Tape Manufacturers Association BEAMA Capacitor Manufacturers Association British Rubber Manufacturers Association Ltd. Cover
5、ed Conductors Association Department of Trade and Industry (National Physical Laboratory) Diamond Fibre Co. Ltd. ERA Technology Ltd. Mica Trade Club Ministry of Defence Paper Federation of Great Britain Royal Society of Chemistry Amendments issued since publication Amd. No. Date Comments 10109 Octob
6、er 1998 Implementation of BSEN 60674-3-7BSEN60674-3-7:1998 BSI 05-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 General 3 2 Designation 3 3 General requirements 3 4 Dimensions 3 5 Properties 4 6 Roll characteristics for all types 5 Annex ZA (normati
7、ve) Normative references to international publicationswiththeir corresponding European publications 7 Table 1 Nominal thickness and permitted range of thickness 4 Table 2 Property requirements for all types 4 Table 3 Property values for all types 5 Table 4 Electric strength (a.c. test) for all types
8、 5 Table 5 Maximum permissible number of joins per roll 6 Table 6 Untitled 6 List of references Inside back coverBSEN60674-3-7:1998 ii BSI 05-1999 National foreword This British Standard has been prepared by Technical Committee GEL/15/3 and is the English language version of EN60674-3-7:1998 Specifi
9、cation for plastic films for electrical purposes Part3: Specification for individual materials Sheet7: Requirements for fluoroethylene-propylene (FEP) film used for electricalinsulation, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC674-3
10、-7:1992, Specification for plastic films for electrical purposesPart3: Specifications for individual materials Sheet7: Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation, published by the International Electrotechnical Commission(IEC). A British Standard does not pu
11、rport to include 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. Summary of pages This document comprises a front cover, an inside front
12、 cover, pagesi andii, theENtitle page, pages2 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE
13、 NORM EN60674-3-7 April 1998 ICS29.035.20 Descriptors: Electrical insulating materials, solid electrical insulating materials, insulating films, plastic films, specifications English version Specification for plastic films for electrical purposes Part3: Specifications for individual materials Sheet7
14、: Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation (IEC 60674-3-7:1992) Spcification pour les films en matire plastique usages lectriques Partie3: Spcifications pour matriaux particuliers Feuille7: Prescriptions pour les films de fluorothylne-propylne (FEP) utilis
15、s dans lisolation lectrique (CEI60674-3-7:1992) Bestimmung fr Isolierfolien fr elektrotechnische Zwecke Teil3: Anforderungen fr einzelne Werkstoffe Blatt7: Anforderungen an Fluorethylenpropylen-(FEP)-Folien zur elektrischen Isolierung (IEC60674-3-7:1992) This European Standard was approved by CENELE
16、C on 1998-04-01. 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 concerning such national standards
17、 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 into its own language and notified
18、 to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swi
19、tzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form a
20、nd by any means reserved worldwide for CENELEC members. Ref. No. EN60674-3-7:1998 EEN60674-3-7:1998 BSI 05-1999 2 Foreword The text of the International Standard IEC60674-3-7:1992, prepared by SC15C, Specifications, of IEC TC15, Insulating materials, was submitted to the formal vote and was approved
21、 by CENELEC as EN60674-3-7 on 1998-04-01 without any modification. The following dates were fixed: 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 Standa
22、rd IEC60674-3-7:1992 was approved by CENELEC as a European Standard without any modification. latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1998-12-01 latest date by which the national standards conflicting
23、 with the EN haveto be withdrawn (dow) 1998-12-01BSEN60674-3-7:1998 BSI 05-1999 3 1 General 1.1 Scope This International Standard gives the requirements for copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP), conventionally described as fluoroethylene-propylene (FEP), as films, wi
24、th orwithout surface treatments to render the surface cementable and heat sealable. 1.2 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 indi
25、cated were valid. All normative documents are subject to revision, 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 o
26、f currently valid International Standards. IEC674-1:1980, Specification for plastic films for electrical purposes Part1: Definitions and general requirements. IEC674-2:1988, Specification for plastic films for electrical purposes Part2: Methods of test. IEC757:1983, Code for designation of colour. 1
27、.3 Classification The FEP film shall be of the following types: 2 Designation The plastic film shall be identified by the following designation: Designation of the film IEC674-3-7 FEPtype thickness in micrometres width in millimetres length in metres colour. Example: Fluoroethylene-propylene IEC674-
28、3-7 FEP type110020200nc (r=regular; nc=natural colour; other colours according to IEC757). 3 General requirements The material shall be a flexible, self-supporting film made from FEP copolymer. Type2 shall be surface treated on one or both sides to give heat sealability and cementability. All types
29、shall conform to the general requirements laid down in IEC674-1. 4 Dimensions 4.1 Thickness The film thickness of type1 shall be measured in accordance with the requirements of3.3 of IEC674-2. The thickness of type2 shall be measured using a micrometer in accordance with3.1 of IEC674-2. The overall
30、thickness shall be in accordance with the nominal thickness and the permitted range of thickness given inTable 1. The following thickness ranges are commonly available: Type1: General purpose Type2A: One side treated a Type2B: Two sides treated a a Type2 is surface treated to render the surface(s) h
31、eat sealable and cementable. Type1: 12,7 to 5084m; Type2: 12,7 to 1274m.BSEN 60674-3-7:1998 4 BSI 05-1999 Table 1 Nominal thickness and permitted range of thickness (4m) 4.2 Width The film width shall be measured in accordance with the requirements of clause5 of IEC674-2. Preferred widths cannot be
32、given on account of the great variety of applications. The maximum deviation in film width from the nominal shall be 1,6mm. 5 Properties 5.1 Properties not dependent on thickness Table 2 Property requirements for all types Type Nominal thickness Overall permitted range of thickness 4m 4m Min. Max. 1
33、 and2 1 and2 1 and2 1 and2 1 and2 1 1 1 1 12,7 25 51 76 127 190 254 356 508 8,9 18 38 57 102 158 216 320 432 16,5 33 64 95 152 223 292 391 584 Property Requirements Units IEC674-2 Test method Clause Density Melting point Permittivity 2150 20 Under consideration 2,15max. kg/m 3 4, Method D a 16.1 b 2
34、3C, 1MHZ Dissipation factor k 0,0004 k 0,0003 k 0,0006 16.1 b 23C, 48Hz62Hz 23C, 1kHz 23C, 1MHz Volume resistivity U 1,10 16 U 1,10 15 7 m 15, 23C 170C Surface resistivity U 1,10 15 7 14 23C, 50% r.h. a The recommended mixture is1,3-dibromopropane and ethylene bromide. b Use non-contacting electrode
35、s or evaporated metal electrodes.BSEN60674-3-7:1998 BSI 05-1999 5 5.2 Properties dependent on thickness Table 3 Property values for all types Table 4 Electric strength (a.c. test) for all types 5.3 Other properties 5.3.1 Thermal endurance There is no requirement for thermal endurance because thermal
36、 endurance cannot be measured inaccordance with the requirements of clause 28 of IEC764-2 since the low melting point (approximately260C280C) would require low ageing temperatures and unreasonably long ageingtimes. NOTEExperience indicates that these materials are frequently suitable for service at2
37、00C. 5.3.2 Burning characteristics When determined according to clause29 of IEC674-2, the classification shall be VTF0. 6 Roll characteristics for all types Rolls shall be suitably restrained to prevent unwinding. Material shall be wound evenly and tightly on theroll to prevent uneven edges or teles
38、coping. 6.1 Roll diameter/film length There are no requirements in this standard for roll diameters or film lengths on a roll. These should be subject to contract. 6.2 Windability/sag No requirement. Property Nominal thickness 4m IEC674-2 Test method Clause Requirements Units Tensile strength, machi
39、ne direction and transverse direction 12,7 25508 10 a U 14 U 17 MPa Elongation at break, machine and transverse direction 12,7 25 51508 10 a U 175 U 200 U 250 % Dimensional change, shrinkage, machine and transverse direction 12,725 51 76508 23 (200C) 30min k 5 k 3 k 2 % a Rate of extension50mm/min,
40、reference lines100mm apart. Nominal thicknes 4m Minimum electric strength V/4m IEC 674-2 Test method Subclause 12,7 25 51 160 160 140 18.1 Using6mm diameter electrodes in air 76 127 190 254 356 508 120 100 80 70 65 55 18.1 Using6mm diameter electrodes in transformer oilBSEN 60674-3-7:1998 6 BSI 05-1
41、999 6.3 Joins Where joins (splices) are permitted, their construction shall conform to the requirements given in3.3 of IEC674-1. Breaks (unjoined pieces) shall also be indicated so as to be clearly visible when viewed from the end face of the roll. The number of joins (splices) or breaks in each rol
42、l shall not exceed the values given in Table 5. Table 5 Maximum permissible number of joins per roll 6.4 Roll width The maximum difference between the film width measured according to clause5 of IEC674-2 and the roll width excluding the core (expressed in millimetres) shall be according to Table 6.
43、Table 6 6.5 Cores The preferred core inner diameters are76mm and152mm. Nominal thickness 4m Roll nominal outer diameter Core inner diameter76mm Core inner diameter152mm 190 241 12,7 25 51 190 254 356 508 2 1 3 2 4 3 3 2 1 1 1 1 4 3 2 1 1 1 7 4 3 3 1 2 NOTEThe minimum distance between joins or splice
44、s or between a join and the end of the roll shall be not less than30m for films under5084m thickness and15m for5084m thickness. Core inner diameter k 77mm Core inner diameter 77mm Roll outer diameter k 241 Roll outer diameter 241 Roll outer diameter k 280 Roll outer diameter 280 3,2 6,4 3,2 6,4EN606
45、74-3-7:1998 BSI 05-1999 7 Annex 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 appropri
46、ate places in the text and the 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 publicati
47、on referred to applies (including amendments). NOTEWhen an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. IEC publication Date Title EN/HD Date 60974-1 1980 Specification for plastic films for electrical purposes EN60674-1 1998 Pa
48、rt1: Definitions and general requirements 60674-2 1988 Part2: Methods of test EN60674-2 1998 +corr. November 1995 60757 1983 Code for designation of colours HD457S1 19858 blankBSEN 60674-3-7:1998 BSI 05-1999 List of references See national foreword.BS EN 60674-3-7:1998 IEC674-3-7: 1992 BSI 389 Chisw
49、ick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim
