1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPlastic films for electrical purposesPart 3: Specifications for individual materials Sheet 8: Balanced biaxially oriented polyethylene naphthalate (PEN) films used for electrical
2、 insulationBS EN 60674-3-8:2011National forewordThis British Standard is the UK implementation of EN 60674-3-8:2011. It isidentical to IEC 60674-3-8:2011.The UK participation in its preparation was entrusted to Technical CommitteeGEL/15, Solid electrical insulating materials.A list of organizations
3、represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 76454 7ICS 29.035.20Compliance with a British Standard cannot con
4、fer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 September 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 60674-3-8:2011EUROPEAN STANDARD EN 60674-3-8 NORME EUROPEN
5、NE EUROPISCHE NORM August 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form
6、 and by any means reserved worldwide for CENELEC members. Ref. No. EN 60674-3-8:2011 E ICS 29.035.20 English version Plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheet 8: Balanced biaxially oriented polyethylene naphthalate (PEN) films used for electrical
7、 insulation (IEC 60674-3-8:2011) Films plastiques usages lectriques - Partie 3: Spcifications pour matriaux particuliers - Feuille 8: Films de polynaphtalate dthylne (PEN) orientation bi-axiale quilibre, utiliss dans lisolation lectrique (CEI 60674-3-8:2011) Isolierfolien fr elektrotechnische Zwecke
8、 Teil 3: Bestimmungen fr einzelne Werkstoffe Blatt 8: Isotrop biaxial orientierte Polyethylennaphthalat-(PEN)-Folien zur elektrischen Isolierung (IEC 60674-3-8:2011) This European Standard was approved by CENELEC on 2011-08-17. CENELEC members are bound to comply with the CEN/CENELEC Internal Regula
9、tions 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 CENELEC member. This
10、 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. CENELEC members
11、 are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
12、Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 60674-3-8:2011EN 60674-3-8:2011 - 2 - Foreword The text of document 15/631/FDIS, future edition 1 of IEC 60674-3-8, prepared by IEC TC 15, Solid electrical insulating materials, was submitted to the IEC-CENELEC parallel vote and was
13、approved by CENELEC as EN 60674-3-8 on 2011-08-17. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest
14、 date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-05-17 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-08-17 Annex ZA has been added by CENELEC. _ Endorsemen
15、t notice The text of the International Standard IEC 60674-3-8:2011 was approved by CENELEC as a European Standard without any modification. _ BS EN 60674-3-8:2011- 3 - EN 60674-3-8:2011 Annex ZA (normative) Normative references to international publications with their corresponding European publicat
16、ions The following referenced 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. NOTE When an international publication has b
17、een modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-2-66 1994 Environmental testing - Part 2-66: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour) EN 60068-2-66 1994 IEC 60216-5 + corr. Decem
18、ber 2008 2009 Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material EN 60216-5 2008 IEC 60674-1 1980 Specification for plastic films for electrical purposes - Part 1: Definitions and general requirem
19、ents EN 60674-1 1998 IEC 60674-2 + corr. November 1988 1995 Specification for plastic films for electrical purposes - Part 2: Methods of test EN 60674-2 1998 ISO 11357-3 1999 Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of temperature and enthalpy of melting and crystal
20、lization - - BS EN 60674-3-8:2011 2 60674-3-8 IEC:2011 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Classification 6 4 Designation 6 5 General requirements . 7 6 Dimensions 7 6.1 Thickness 7 6.2 Width 7 7 Properties . 8 7.1 Properties not dependent on thickness 8 7.2 Properties
21、 dependent on thickness 9 7.3 Other properties 10 7.3.1 Thermal endurance 10 7.3.2 Burning characteristics 10 8 Roll characteristics for all types 11 8.1 Roll diameter/film length 11 8.2 Windability/sag 11 8.2.1 General . 11 8.2.2 For films of width less than 150 mm . 11 8.2.3 For films of width 150
22、 mm and above 11 8.3 Joins . 11 8.4 Roll width 12 8.5 Cores 12 Table 1 Properties not dependent on thickness 8 Table 2 Properties dependent on thickness 9 Table 3 Electric strength (a.c. test) for all types . 10 Table 4 Electric strength (d.c. test) type 2 only 10 Table 5 Windability 11 Table 6 Maxi
23、mum permissible number of joins or breaks per roll 11 Table 7 Film width 12 BS EN 60674-3-8:201160674-3-8 IEC:2011 5 INTRODUCTION This International Standard is one of a series which deals with plastic films for electrical purposes. The series consists of three parts: Part 1: Definitions and general
24、 requirements (IEC 60674-1). Part 2: Methods of test (IEC 60674-2). Part 3: Specifications for individual materials (IEC 60674-3). This standard contains one of the sheets comprising part 3, as follows: Sheet 8: Balanced biaxially oriented polyethylene naphthalate (PEN) films used for electrical ins
25、ulation. BS EN 60674-3-8:2011 6 60674-3-8 IEC:2011 PLASTIC FILMS FOR ELECTRICAL PURPOSES Part 3: Specifications for individual materials Sheet 8: Balanced biaxially oriented polyethylene naphthalate (PEN) films used for electrical insulation 1 Scope This International Standard gives the requirements
26、 for balanced biaxially oriented poly-ethylene naphthalate (PEN) films for use as electrical insulation. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requi
27、rements necessary for adequate performance in that application and not based on this specification alone. Safety warning: it is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner. 2 Normative references The following
28、referenced 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 60674-1:1980, Specification for plastic films for electrica
29、l purposes Part 1: Definitions and general requirements IEC 60674-2:1988, Specification for plastic films for electrical purposes Part 2: Methods of test IEC60068-2-66:1994, Environmental testing Part 2: Test methods Test Cx: Damp heat, steady state (unsaturated pressurized vapour) IEC 60216-5:2008,
30、 Electrical insulating materials Thermal endurance properties Part 5: Determination of relative thermal endurance index (RTE) of an insulating material ISO11357-3:1999, Plastics Differential scanning calorimetry (DSC) Part 3:Determination of temperature and enthalpy of melting and crystallization 3
31、Classification The PEN film shall be of the following types: Type 1a: General purpose, high hydrolytic stability grade. Type 1b: General purpose, standard grade. Type 2: Capacitor grade. 4 Designation The plastic film shall be identified by the following designation: BS EN 60674-3-8:201160674-3-8 IE
32、C:2011 7 Designation of the film - IEC 60674-3-8 - PEN - type - thickness in micrometres - width in millimetres - length in metres - colour. Example: Polyethylene naphthalate - IEC 60674-3-8 - PEN - type 1b - 100 - 20 - 200 nc (nc = natural colour; other colours according to IEC 60757). 5 General re
33、quirements The material shall be made from polyethylene naphthalate; it shall be biaxially oriented with an approximately balanced orientation and shall conform to the requirements laid down in IEC 60674-1. For certain applications additives to the base material may be present (e.g. pigments, dyes).
34、 Where such additives are included, they shall not affect the requirements for any of the properties listed for that type unless otherwise specified. 6 Dimensions 6.1 Thickness The film thickness shall be measured by a gravimetric method in accordance with the requirements of Subclause 3.3 of IEC 60
35、674-2. NOTE There are no requirements for thickness in this standard but preferred thicknesses in m are as follows: 1,2; 1,3; 1,5; 1,8; 1,9; 2; 2,1; 2,3; 3; 3,5; 4; 5; 6; 8; 9; 12; 16; 19; 20; 25; 38; 45; 50; 75; 89; 100; 125; 188; 200; 250. The thickness tolerance shall comply with the requirements
36、 in Subclause 4.1 of IEC 60674-1 unless otherwise specified in the purchase contract. 6.2 Width The film width shall be measured in accordance with the requirements of Clause 5 of IEC 60674-2. Preferred widths cannot be given on account of the great variety of applications. The tolerance on the widt
37、h shall comply with the requirements of Subclause 4.2 of IEC 60674-1 except for slot closure applications where on a width of less than 25 mm a tolerance of x0,0 0,3mm is specified as an alternative. BS EN 60674-3-8:2011 8 60674-3-8 IEC:2011 7 Properties 7.1 Properties not dependent on thickness Tab
38、le 1 Properties not dependent on thickness Property Requirements Units IEC 60674- 2 Test method Subclause Type Density - normal 1 350 20 kg/m34, Method D 1a,1b and 2 Melting- point 270 5 aC 1a,1b and 2 Permittivity 2,6 0,5 16.1 (23 C, 1 kHz) b1a,1b and 2 Dissipation factor 1016 m 15 c1a and 1b 10162
39、 Surface resistivity 1014 14 c1a and 1b 10152 aDSC method according to ISO 11357-3. b Use non-contacting electrodes or evaporated metal electrodes. cMeasurement conditions shall be 23 C and 50 % r.h. after 24 h exposure. The test voltages are 100 V 10 V for thicknesses 10 m and 10 V for thicknesses
40、15 m up to 100 m 100 m up to 250 m Tensile strength (either direction) Minimum value - Initial value - After exposure to unsaturated damp heat for 96 h c180 a 120 95 MPa 10 b 1a, 1b and 2 130 a100 90 1a 110a90 85 1b and 2 Elongation at break (either direction) Minimum value - Initial value - After e
41、xposure to unsaturated damp heat for 96 h c35 a40 40 % 10 b1a, 1b and 2 20 a20 20 1a 10 a10 10 1b and 2 Dimensional change (shrinkage either direction) 1,3 1,0 0,8 % 23 (150 C, 15 min) 1a, 1b and 2 6,5 3,5 1,6 23 (200 C, 10 min) 1a, 1b and 2 Electric strength See Tables 3 and 4 18.1, a.c. d1a, 1b an
42、d 2 18.2, d.c. 2 aNo requirement for film thicknesses below 5 m. bRate of extension 100 mm/min, reference lines 100 mm apart. c Exposure to unsaturated damp heat (unsaturated pressurized vapour), 120 C, 85 % r.h. according to Clauses 3 to 9 in IEC 60068-2-66. dMethod to use 6 mm diameter electrodes.
43、 For materials of thicknesses 100 m or less, tests shall be made in air using a rate of rise of voltage of 500 V/s. For materials thicker than 100 m, tests shall be made in transformer oil in accordance with IEC60243-1. BS EN 60674-3-8:2011 10 60674-3-8 IEC:2011 Table 3 Electric strength (a.c. test)
44、 for all types Nominal thickness m Minimum electric strength V/m IEC 60674- 2 Test method Subclause 23 C 150 C 6 9 12 16 20 25 38 50 75 100 125 188 250 - - - 405 a360 a305 a235 a190 a150 a120 a 95b80 b70 b- - - 230 c190 c170 c140 c120 c100 c80 c70 c50 c40 c18.1 Using 6 mm diameter electrodes ain air
45、. bin mineral transformer oil. c in silicone transformer oil. Table 4 Electric strength (d.c. test) type 2 only Nominal thickness Minimum breakdown voltage Central value Not more than two of the 21 results shall be below Not more than one of the 21 results shall be below m V V V 4 5 6 12 1200 1200 1
46、800 5900 500 500 1200 3600 100 a200 a1000 a3000 aThis value is only for information. The actual value shall be agreed between purchaser and manufacturer. 7.3 Other properties 7.3.1 Thermal endurance Thermal endurance for types 1a and 1b films (25 m) shall be measured according to IEC 60216-5. RTE 16
47、0* * End point criterion: 50 % retention of tensile strength. Reference material: PPS (Polyphenylene Sulfide) film having approximately the same thickness as the subject material and an ATE in accordance with IEC 60216-5, Subclause 3.1.4. Ageing temperatures of 180 C, 200 C and 220 C are recommended
48、. There is no thermal endurance requirement for type 2 films. 7.3.2 Burning characteristics No requirement. BS EN 60674-3-8:201160674-3-8 IEC:2011 11 8 Roll characteristics for all types 8.1 Roll diameter/film length There are no requirements in this standard for roll diameters or film lengths on a
49、roll. These should be subject to contract. 8.2 Windability/sag 8.2.1 General The windability shall be measured in accordance with the requirements of Clause 6 of IEC 60674-2. 8.2.2 For films of width less than 150 mm Method A shall be used. 8.2.3 For films of width 150 mm and above Method B shall be used. Table 5 Windability Property Type 1 Type 2 Bias/camber 50 mm Outer diameter 250 mm Width 5
