1、BRITISH STANDARD BS EN 60674-3-3:1998 Incorporating Amendment No.1 to BS7290-3.3:1995 (renumbers the BS as BS EN60674-3-3: 1998) Specification for plastic films for electrical purposes Part 3: Specifications for individual materials Sheet 3: Requirements for polycarbonate (PC) films used for electri
2、cal insulation The European Standard EN60674-3-3:1998 has the status of a British Standard ICS 29.035.20BSEN60674-3-3:1998 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comes intoeffect
3、 on 15June1995 BSI 05-1999 The following BSI references relate to the work on this standard: Committee reference GEL/15/3 Special announcement in BSINews April1995 ISBN 0 580 24331 1 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical
4、Committee GEL/15, Insulating material, to Subcommittee GEL/15/3, Material specifications, upon which the following bodies were represented: Adhesive Tape Manufacturers Association BEAMA Capacitor Manufacturers Association British Rubber Manufacturers Association Ltd. Covered Conductors Association D
5、epartment of Trade and Industry (National Physical Laboratory) Diamond Fibre Co. Limited 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 10108 October1998 Adoption as a Eur
6、opean StandardBSEN60674-3-3:1998 BSI 05-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 General 3 2 Designation 3 3 General requirements 3 4 Dimensions 3 5 Properties 4 6 Roll characteristics for all types 6 Annex ZA (normative) Normative references to internati
7、onal publications with their corresponding European publications 8 Table 1 Type and thickness range 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 5 Table 5 Electric strength (d.c. test) for type3 only 5 Tab
8、le 6 Number of faults counted 6 Table 7 Windability 6 Table 8 Maximum permissible number of joins 7 Table 9 Film width 7 List of references Inside back coverBSEN60674-3-3:1998 ii BSI 05-1999 National foreword This British Standard is the English language version of EN60674-3-3:1998. It supersedes BS
9、7290-3.3:1995. The UK participation in its preparation was entrusted by Technical Committee GEL/15 to Subcommittee GEL/15/3, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on interpretation, or proposals for change,
10、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 secretary. Cross-references The British Standards which implement international or European p
11、ublications 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 include all the necessary
12、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 cover, pagesi andii, theEN title p
13、age, pages2 to 8, 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 NORM EN60674-3-3 April1998 ICS29
14、.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 Sheet3:Requirements for polycarbonate (PC
15、) films used for electrical insulation (IEC 60674-3-3:1992) Spcification pour les films en matire plastique usages lectriques Partie3: Spcifications pour matriaux particuliers Feuille3: Prescriptions pour les films polycarbonate (PC) utiliss dans lisolation lectrique (CEI60674-3-3:1992) Bestimmung f
16、r Isolierfolien fr elektrotechnische Zwecke Teil3: Anforderungen fr einzelne Werkstoffe Blatt3: Anforderungen an Polycarbonat(PC)Folien zur elektrischen Isolierung (IEC60674-3-3:1992) This European Standard was approved by CENELEC on1998-04-01. CENELEC members are bound to comply with the CEN/CENELE
17、C 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 or to any CEN
18、ELEC 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 official versions
19、. 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. CENELEC European Committee for Electrotech
20、nical 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 and by any means reserved worldwide for CENELEC members. Ref. No. EN6067
21、4-3-3:1998 EEN60674-3-3:1998 BSI 05-1999 2 Foreword The text of the International Standard IEC60674-3-3:1992, prepared by SC15C, Specifications, of IEC TC15, Insulating materials, was submitted to the formal vote and was approved by CENELEC as EN60674-3-3 on1998-04-01 without any modification. The f
22、ollowing 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 Standard IEC60674-3-3:1992 was approved by CENELEC as a European Standard witho
23、ut any modification. latest date by which the EN has 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 with the EN have to be withdrawn (dow)1998-12-01BSEN60674-3-3:1998 BSI 0
24、5-1999 3 1 General 1.1 Scope This International Standard gives the requirements for polycarbonate films, for use as electrical insulation. 1.2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International
25、Standard. At the time of publication, the editions indicated 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 indic
26、ated below. Members of IEC and ISO maintain registers of 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
27、of test. IEC757:1983, Code for designation of colours. 1.3 Classification The polycarbonate film shall be of the following types: These three types are available in regular and in flame-retardant types. 2 Designation The plastic film shall be identified by the designation which follows: Designation
28、of the film IEC674-3-3 PC type thickness in micrometres width in millimetres length in metres colour. Example: Polycarbonate film IEC674-3-3 PC type1-100-20-200 nc f (f=flame-retardant; r=regular; nc=natural colour; other colours according to IEC757). 3 General requirements The material shall be mad
29、e from bisphenol-A-polycarbonate. Flame-retardant grades shall be made from a blend of bisphenol-A-polycarbonate and brominated bisphenol-A-polycarbonate. The material shall be a flexible, self-supporting film. All types shall conform to the general requirements laid down in IEC674-1. For certain ap
30、plications, additives to the base material may be present (e.g.thermal or UV stabilisers, dyes or pigments for identification purposes). Where such additives are used, they shall not affect the requirements for any of the properties listed for that type, unless otherwise specified. 4 Dimensions 4.1
31、Thickness The film thickness shall be measured by a gravimetric method in accordance with the requirements of3.3 of IEC674-2. NOTE 1There are no requirements for thickness in this standard, but preferred thicknesses are as follows: 2,3,4,5,6,7,8,10,12,15,20,25,30,40,50,60,75,80,100,120,125,150,180,2
32、00,250,380,500 and7604m. 2 The following thicknesses are commonly available: Type1: General purpose amorphous, unstretched; Type2: General purpose amorphous, stretched; Type3: For use as the dielectric of capacitors, partially crystalline and stretched.BSEN60674-3-3:1998 4 BSI 05-1999 Table 1 Type a
33、nd thickness range The thickness tolerance shall comply with the requirements in4.1 of IEC674-1, unless otherwise specified in the purchase contract. 4.2 Width The film width shall be measured in accordance with the requirements of clause5 of IEC674-2. Preferred widths cannot be given on account of
34、the great variety of applications. The tolerance on the width shall comply with the requirements in4.2 of IEC674-1. 5 Properties 5.1 Properties not dependent on thickness, all types, both regular and flame-retardant Table 2 Property requirements for all types Type Thickness range for all types 4m 1
35、2 3 20 760 20 100 2 60 Property Requirement Unit IEC674-2 Test method Clause Type Density normal 1200 20 1210 20 kg/m 3 4, method A 1 and2 3 Density flame-retardant c kg/m 3 4, method A 1,2 and3 Melting-point Under consideration 3 Permittivity 3,0 0,1 3,0 0,1 16.1 a23C,48Hz 62Hz 23C, 1kHz 1,2 and3 D
36、issipation factor 145 220 C C 24 1 and2 3 under pressure 175 180 C C 25 1 and2 3 a Use non-contacting electrodes or evaporated metal electrodes. b Measurement conditions to be23C and50% r.h. after24 hours exposure. The test voltages are100V 10V for thicknesses104m and10V for thicknesses # 104m. c Th
37、e nominal density shall be as specified in the purchase contract. Typical values for nominal densities are in the range of1260kg/m 3 1440 kg/m 3 . The actual density shall not differ from the nominal density by more than 20kg/m 3 .BSEN60674-3-3:1998 BSI 05-1999 5 5.2 Properties dependent on thicknes
38、s Table 3 Property values for all types Table 4 Electric strength (a.c. test) for all types Table 5 Electric strength (d.c. test) for type3 only Electrical weak spots (type3 only) When measured according to19.3 of IEC674-2 with a test voltage of110V/4m based on the nominal thickness of the film, the
39、 number of faults counted shall not exceed the numbers given inTable 6. Property Types IEC674-2 Test method Nominal thickness 4m Units 25 14 3 3 3 3 3 % a Rate of extension100mm/min, reference lines100mm apart. b No requirement for film below54m. Nominal thickness Minimum electric strength IEC674-2
40、Test method Clause 4m V/4m 6 15 20 30 40 260 260 250 250 190 18.1 Using6mm diameter electrodes in air 60 100 150 200 250 380 760 160 100 80 70 60 60 60 18.1 Using6mm diameter electrodes in transformer oil Test method 18.2 of IEC674-2 Nominal thicknes Breakdown voltage Minimum central value Not more
41、than two of the21 results shall be below Not more than one of the21 results shall be below 4m V V V 8 10 12 15 20 1000 1500 2400 2700 2800 500 800 1500 2000 2400 400 500 700 800 1500BSEN60674-3-3:1998 6 BSI 05-1999 Table 6 Number of faults counted 5.3 Other properties 5.3.1 Thermal endurance The the
42、rmal endurance shall be measured in accordance with the requirements of clause28 of IEC674-2. The end point criterion shall be50% retention of the original elongation at break value. The temperature index for films of types1 and2 shall be not less than130. There is no requirement for type3. The reco
43、mmended ageing temperatures are140C,160C,180C,200C. 5.3.2 Burning characteristics Regular type No requirement Flame-retardant type When determined according to clause29 of IEC674-2, the classification shall be VTFO for materials thicker than204m. For thicknesses more than2504m, not applicable. 6 Rol
44、l characteristics for all types 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 (bias/camber and sag) The windability shall be measured in accordance with the requirements of c
45、lause6 of IEC674-2. Requirements as inTable 7. Table 7 Windability 6.3 Joins Where joins (splices) are permitted, their construction shall conform to the requirements given in3.3 of IEC674-1. Breaks (unjoined pieces) are not allowed. The number of joins per5000m length in each roll shall not exceed
46、the values given in Table 8. Nominal thickness Fault count/m 2 4m 3 4 5 6 8 10 12 5 4 2 2 0,8 0,3 0,2 Film width Test method Bias/camber Maximum extension mm mm 150 $ 150 a A B 10 0,1 % a There is no requirement for film thicknesses greater than204m.BSEN60674-3-3:1998 BSI 05-1999 7 Table 8 Maximum p
47、ermissible number of joins 6.4 Roll width The difference between the film width measured according to clause5 of IEC674-2 and the roll width excluding the core shall be according toTable 9. Table 9 Film width 6.5 Cores The preferred core inside diameters are76mm and152mm. Nominal thickness 4m Maximu
48、m permissible number of joins per5000m length15 5 4 4 3 3 2 2 1 Nominal film width Requirement Maximum difference mm mm 300 0,5 1,0 2,0EN60674-3-3:1998 8 BSI 05-1999 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European S
49、tandard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate 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 publ
