1、BRITISH STANDARD BS EN 60672-3:1998 IEC 60672-3: 1997 Ceramic and glass insulating materials Part 3: Specifications for individual materials The European Standard EN 60672-3:1997 has the status of a British Standard ICS 29.035.30BSEN 60672-3:1998 This British Standard, having been prepared under the
2、 direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI 12-1999 ISBN 0 580 29444 7 National foreword This British Standard is the English language version of EN60672-3:1997. It is identical with IEC60672-3
3、:1997. The UK participation in its preparation was entrusted by Technical Committee GEL/15, Insulating materials, to Subcommittee GEL/15/3, Material specifications, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any
4、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. A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 19
5、97, all IEC publications have the number 60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. 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 Attention is d
6、rawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standard
7、s 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 provisions of a contract. Users of British Standards are responsible for
8、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, pages i and ii, the EN title page, pages 2 to 11 and a back cover. This standard has been updated (s
9、ee copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBS EN 60672-3:1998 BSI 12-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 60
10、672-3 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60672-3 November 1997 ICS 29.035.30 SupersedesHD426.3S1:1987 Descriptors: Insulating material, ceramic, glass, specification English version Ceramic and glass-insulating materials Part 3: Specifications for individual materials (IEC
11、 60672-3:1997) Matriaux isolants base de cramique ou de verre Partie 3: Spcifications pour matriaux particuliers (CEI 60672-3:1997) Keramik- und Glas-Isolierstoffe Teil 3: Bestimmungen fr einzelne Werkstoffe (IEC 60672-3:1997) This European Standard was approved by CENELEC on 1997-10-01. CENELEC mem
12、bers 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 may be obtained on applicat
13、ion 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 to the Central Secretariat
14、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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom
15、. 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 1997 CENELEC All rights of exploitation in any form and by any means reserved wo
16、rldwide for CENELEC members. Ref. No. EN 60672-3:1997 EEN60672-3:1997 BSI 12-1999 2 Foreword The text of document 15C/793/FDIS, future edition2 of IEC60672-3, prepared by SC15C, Specifications, of IEC TC15, Insulating materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENE
17、LEC as EN60672-3 on1997-10-01. This European Standard supersedes HD426.3 S1:1987. The following dates were fixed: Endorsement notice The text of the International Standard IEC60672-3:1997 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 Introduction 3
18、 1 Scope 3 2 Classification, guide to properties, minimum specifications 3 Table 1 Ceramic-insulating materials 4 Table 2 Glass-ceramic and glass-mica materials 10 Table 3 Glass-insulating materials 11 latest date by which the EN has to be implemented at national level by publication of an identical
19、 national standard or by endorsement (dop) 1998-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1998-07-01EN 60672-3:1997 BSI 12-1999 3 Introduction This part of IEC60672 is one of a series which deals with ceramic, glass, glass-ceramic and glass-
20、mica materials for electrical insulating purposes. The series consists of three parts: Part 1: Definitions and classification (IEC 60672-1); Part 2: Methods of test (IEC 60672-2); Part 3: Specifications for individual materials (IEC 60672-3). As outlined in the foreword to IEC60672-1, the intention
21、has been to remove redundant class C830, and to include a range of new materials currently used commercially for electrical insulation. A full list appears in IEC60672-1. This part of IEC60672 describes the typical properties of electrically insulating ceramics for use as satisfactory insulating com
22、ponents. Certain items are indicated with maximum or minimum values. These items may be used as a property specification that may be applied to test pieces. In using this standard as a minimum specification, the user should appreciate that because test pieces and final components may not have equiva
23、lent properties as a result of fabrication and geometrical factors, the specification of the final product should be based on actual requirements, and not on this materials specification alone. 1 Scope This part of IEC60672 is applicable to ceramic, glass-ceramic, glass-mica and glass materials for
24、electrical insulating purposes. It provides, for guidance, a classification of materials for general electrical insulating purposes, and indicates typical numerical values for the characteristics relevant to each subgroup or type of material as determined by the test methods defined in IEC60672-2. T
25、hese numerical values apply only to the specified test specimens and test methods. They cannot necessarily be extended to test specimens and products of other shapes and dimensions or methods of fabrication. 2 Classification, guide to properties, minimum specifications Classification into individual
26、 subgroups (types) of materials and typical numerical values of properties are given in Table 1 for ceramic insulating materials, in Table 2 for glass-ceramic and glass-mica insulating materials and in Table 3 for glass-insulating materials. Where a figure given in the tables is underlined in bold,
27、it is considered that this property is usually of importance for the applications for which the subgroup is normally employed, and forms the basis of a minimum materials specification. Certain characteristics are annotated with “maximum” or “minimum”. These are characteristics which are usually of m
28、ost importance in defining acceptability in the selection of a suitable insulating material. It is recommended that these characteristics are critically evaluated. Materials which conform to this specification meet established levels of performance as assessed on test specimens for properties approp
29、riate to the application of the material. 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 on this specification alone.EN 60672-3:1997 4 BSI 12-1999 Table 1 Ceramic-ins
30、ulating materials Table 1a (for figures underlined in bold, see clause 2) 1 Group C 100 2 Type Alkaline alumino-silicate porcelains 3 Subgroup C 110 C 111 C 112 C 120 C 130 C 140 4 Name Siliceous porcelains plastic- processed Siliceous porcelains, pressed Cristobalite porcelains, plastic- processed
31、Aluminous porcelains Aluminous porcelains, high strength Lithia porcelains Properties Symbol Units 5 Open (apparent) porosity, maximum p a Vol % 0,0 3 0,0 0,0 0,0 0,5 6 Bulk density, minimum a Mg m 3 2,2 2,2 2,3 2,3 2,5 2,0 7 Flexural strength, minimum Unglazed ft MPa 50 40 80 90 140 50 8 Glazed fg
32、MPa 60 100 110 160 60 9 Modulus of elasticity, minimum E GPa 60 70 100 10 Mean coefficient of linear thermal expansion 30100(30 C to 100 C) 10 6K 1 3 to 6 3 to 5 6 to 8 3 to 6 4 to 7 1 to 3 11 30300(30 C to 300 C) 10 6K 1 3 to 6 3 to 6 6 to 8 3 to 6 4 to 7 1 to 3 12 30600(30 C to 600 C) 10 6K 1 4 to
33、 7 4 to 7 6 to 8 4 to 7 5 to 7 1 to 3 13 301 000(30 C to 1 000 C) 10 6K 1 14 Specific heat capacity 30 C to 100 C c p,30100 J kg 1K 1 750 to 900 800 to 900 800 to 900 750 to 900 800 to 900 750 to 900 15 Thermal conductivity 30 C to 100 C 30100 W m 1K 1 1 to 2,5 1 to 2,5 1,4 to 2,5 1,2 to 2,6 1,5 to
34、4,0 1,0 to 2,5 16 Resistance to thermal shock, minimum T K 150 150 150 150 150 250 17 Electric strength, minimum a E d kV mm 1 20 20 20 20 15 18 Withstand voltage, minimum U kV 30 30 30 30 20 19 Relative permittivity 48 Hz to 62 Hz r 6 to 7 5 to 6 6 to 7 6 to 7,5 5 to 7 20 Temperature coefficient of
35、 permittivity TK 10 6K 1 + 600 to +500 +600 to +500 +600 to +500 +600 to +500 21 Dissipation factor at 20 C, maximum 48 Hz to 62 Hz tan pf 10 3 25 25 25 30 10 22 1 kHz tan 1k 10 3 23 1 MHz tan 1M 10 3 12 12 12 15 10 24 Volume resistivity in terms of temperature (d.c.), minimum 30 C v,30 7 m 10 11 10
36、 10 10 11 10 11 10 11 10 11 25 200 C v,200 7 m 10 6 10 6 10 6 10 6 10 6 10 7 26 600 C v,600 7 m 10 2 10 2 10 2 10 2 10 2 10 2 27 Minimum temperature 1 M7 m T 1 C 200 200 200 200 200 200 28 corresponding to a volume resistivity of 0,01 M7 m T 0,01 C 350 350 350 350 350 350 a Given values refer to tes
37、ts on specimens according to Figure 6 of IEC 60672-2.EN 60672-3:1997 BSI 12-1999 5 Table 1 Ceramic-insulating materials Table 1b (for figures underlined in bold, see clause 2) 1 Group C 200 2 Type Magnesium silicates 3 Subgroup C 210 C 220 C 221 C 230 C 240 C 250 4 Name Steatites low voltage Steatit
38、es normal Steatites, low loss Steatites, porous Forsterites, porous Forsterites, dense Symbol Units 5 p a Vol % 0,5 0,0 0,0 35 30 0,0 6 a Mg m 3 2,3 2,6 2,7 1,8 1,9 2,8 7 ft MPa 80 120 140 30 35 140 8 fg MPa 9 E GPa 60 80 110 10 30100 10 6K 1 6 to 8 7 to 9 6 to 8 8 to 10 8 to 10 9 to 11 11 30300 10
39、6K 1 6 to 8 7 to 9 7 to 9 8 to 10 8 to 10 9 to 11 12 30600 10 6K 1 6 to 8 7 to 9 7 to 9 8 to 10 8 to 10 9 to 11 13 301 000 10 6K 1 6 to 8 8 to 10 8 to 10 8 to 10 10 to 11 14 c p,30100 J kg 1K 1 800 to 900 800 to 900 800 to 900 800 to 900 800 to 900 800 to 900 15 30100 W m 1K 1 1 to 2,5 2 to 3 2 to 3
40、 1,5 to 2 1,4 to 2 3 to 4 16 T K 80 80 100 80 17 E d kV mm 1 15 20 20 18 U kV 20 30 30 19 r 6 6 6 7 20 TK ( 10 6K 1 +160 to +70 +160 to +70 +160 to +70 21 tan pt 10 3 25 5 1,5 1,5 22 tan 1k 10 3 23 tan 1M 10 3 7 3 1,2 0,5 24 v,30 7 m 10 10 10 11 10 11 10 11 25 v,200 7 m 10 7 10 8 10 9 10 8 10 9 10 9
41、 26 v,600 7 m 10 3 10 3 10 5 10 5 10 5 10 5 27 T 1 C 200 350 500 500 500 500 28 T 0,01 C 400 530 800 800 800 800EN 60672-3:1997 6 BSI 12-1999Table 1 Ceramic-insulating materials Table 1c (for figures underlined in bold, see clause 2) 1 Group C 300 2 Type Titanates and other high-permittivity ceramic
42、s 3 Subgroup C 310 C 320 C 330 C 331 C 340 C 350 C 351 4 Name Titania-based Magnesium titanate Titania and other oxides Sr and Ca bismuth titanate based Based on ferroelectric perovskites Symbol Units Medium r High r 5 p a Vol % 0,0 0,0 0,0 0,0 0,0 0,0 0,0 6 a Mg m 3 3,5 3,1 4,0 4,5 3,0 4,0 4,0 7 ft
43、 MPa 70 70 80 80 70 50 50 8 fg MPa 9 E GPa 10 30100 10 6K 1 6 to 8 6 to 10 11 30300 10 6K 1 12 30600 10 6K 1 13 301 000 10 6K 1 14 c p,30100 J kg 1K 1 700 to 800 900 to 1 000 15 30100 W m 1K 1 3 to 4 3,5 to 4 16 %T K 17 E d kV mm 1 8 8 10 10 6 2 2 18 U kV 15 15 15 15 8 2 2 19 ( r 40 to 100 12 to 40
44、25 to 50 30 to 70 100 to 700 350 to 3 000 3 000 20 TK ( 10 6K 1 280 to 900 +130 to 150 +70 to 120 120 to 700 1 200 to 6 000 21 tan pf 10 3 22 tan 1k 10 3 6,5 2 20 7 23 tan 1M 10 3 2 1,5 0,8 1,0 5 35 35 24 v,30 7 m 10 10 10 9 10 9 10 9 10 9 10 8 10 8 25 v,200 7 m 26 v,600 7 m 27 T 1 C 28 T 0,01 C EN
45、60672-3:1997 BSI 12-1999 7Table 1 Ceramic-insulating materials Table 1d (for figures underlined in bold, see clause 2) 1 Group C 400 C 500 2 Type Alkaline earth aluminosilicates and zirconporcelains Porous aluminosilicates and magnesium aluminosilicates 3 Subgroup C 410 C 420 C 430 C 440 C 510 C 511
46、 C 512 C 520 C 530 4 Name Cordierite, dense Celsian, dense Lime-based, dense Zircon- based, dense Alumino-silicate based Magnesium aluminosilicate based Cordierite- based Alumino- silicate based Symbol Units 5 p a Vol % 0,5 0,5 0,5 0,5 30 20 40 20 30 6 a Mg m 3 2,1 2,7 2,3 2,5 1,9 1,9 1,8 1,9 2,1 7
47、ft MPa 60 80 80 100 25 25 15 30 30 8 fg MPa 9 E GPa 80 130 40 10 30100 10 6K 1 1 to 3 3 to 5 5 to 7 5 to 7 3 to 5 3 to 6 3 to 5 1,5 to 3,5 3,5 to 5 11 30300 10 6K 1 1 to 3 3 to 5 5 to 7 5 to 7 3 to 5 3 to 6 3 to 5 1,5 to 3,5 3,5 to 5 12 30600 10 6K 1 2 to 4 3,5 to 6 3 to 6 4 to 6 3 to 6 2 to 4 4 to 6 13 301 000 10 6K 1 2 to 4,5 4 to 7 3 to 6 4 to 6 3,5 to 6 2,5 to 5 4 to 7 14 c p,30100 J kg 1K 1 800 to 1 200 800 to 1 000 700 to 850 550 to 650 750 to 850 750 to 850 750 to 900 750 to 900 800 to 900 15 30100 W m 1
