1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationNoise suppression sheet for digital devices and equipmentPart 3: Characterization of parameters of noise suppression sheetBS EN 62333-3:2010National forewordThis British Standard
2、 is the UK implementation of EN 62333-3:2010. It isidentical to IEC 62333-3:2010.The UK participation in its preparation was entrusted to Technical CommitteeEPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations represented on this committee can be obtaine
3、d 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 2010ISBN 978 0 580 61821 5ICS 29.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Brit
4、ish Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 March 2010.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 62333-3:2010EUROPEAN STANDARD EN 62333-3 NORME EUROPENNE EUROPISCHE NORM February 2010 CENELEC European Co
5、mmittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC
6、 members. Ref. No. EN 62333-3:2010 E ICS 29.100.10 English version Noise suppression sheet for digital devices and equipment - Part 3: Characterization of parameters of noise suppression sheet (IEC 62333-3:2010) Plaque rduisant le bruit des dispositifs et appareils numriques - Partie 3: Caractrisati
7、on des paramtres des plaques rduisant le bruit (CEI 62333-3:2010) Rauschunterdrckungsschicht fr digitale Gerte und Einrichtungen - Teil 3: Eigenschaften von Parametern der Rauschunterdrckungsschicht (IEC 62333-3:2010) This European Standard was approved by CENELEC on 2010-02-01. CENELEC members are
8、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 application to th
9、e 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 has the s
10、ame status as the official versions. CENELEC members 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 Nether
11、lands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 62333-3:2010EN 62333-3:2010 - 2 - Foreword The text of document 51/970/FDIS, future edition 1 of IEC 62333-3, prepared by IEC TC 51, Magnetic components and ferrite materials, was s
12、ubmitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62333-3 on 2010-02-01. 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 paten
13、t rights. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-02-01
14、Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62333-3:2010 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 6
15、0695-11-10 NOTE Harmonized as EN 60695-11-10. IEC 62321 NOTE Harmonized as EN 62321:2009 (not modified). IEC 62333-1 NOTE Harmonized as EN 62333-1:2006 (not modified). IEC 62333-2 NOTE Harmonized as EN 62333-2:2006 (not modified). _ BS EN 62333-3:2010- 3 - EN 62333-3:2010 Annex ZA (normative) Normat
16、ive references to international publications with their corresponding European publications 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 do
17、cument (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60068-1 1988 Environmental testing - Part 1: General and guidance EN 60068-11) 1994 IEC 6
18、0068-2-1 - Environmental testing - Part 2-1: Tests - Test A: Cold EN 60068-2-1 - IEC 60068-2-2 - Environmental testing - Part 2-2: Tests - Test B: Dry heat EN 60068-2-2 - IEC 60093 - Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials HD 429 S1 - I
19、SO 527-1 - Plastics - Determination of tensile properties - Part 1: General principles - - ISO 1183-1 2004 Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pyknometer method and titration method - - ISO 3611 - Micrometer callipers for externa
20、l measurement - - ISO 22007-1 - Plastics - Determination of thermal conductivity and thermal diffusivity - Part 1: General principles - - ISO 22007-2 - Plastics - Determination of thermal conductivity and thermal diffusivity - Part 2: Transient plane heat source (hot disc) method - - ISO 22007-3 - P
21、lastics - Determination of thermal conductivity and thermal diffusivity - Part 3: Temperature wave analysis method - - ISO 22007-4 - Plastics - Determination of thermal conductivity and thermal diffusivity - Part 4: Laser flash method - - 1) EN 60068-1 includes A1 to IEC 60068-1 + corr. October . BS
22、 EN 62333-3:2010 2 62333-3 IEC:2010 CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .7 4 General 7 5 Parameters, descriptions and measuring methods8 5.1 Material properties 8 5.1.1 Surface resistivity8 5.1.2 Mechanical characteristics.8 5.1.3 Thermal conductivity8
23、 5.1.4 Environmental conditions.9 5.1.5 Statement for non-usage of the prohibited chemical materials .10 5.2 Structure .10 5.2.1 Thickness 10 5.2.2 Layer structure 10 Bibliography11 Figure 1 Framework of IEC 62333 series for noise suppression sheet5 Figure 2 Schematic diagram of thermal conductivity
24、 measuring apparatus .9 Figure 3 Structure of NSS 10 Table 1 Structural example 10 BS EN 62333-3:201062333-3 IEC:2010 5 INTRODUCTION There are established standards for noise suppression sheet (NSS) as in IEC 62333-1 and in IEC 62333-2. Figure 1 shows the framework of IEC 62333 series for NSS. Part
25、1 issues the general guidelines of IEC 62333 series. Part 2 establishes measurement methods of four important suppression ratios for NSS. This Part 3 specifies characterization of each parameter except suppression ratio of NSS, which is determined in Part 2. Parameters prescribed in this part are di
26、vided into material properties and structure. Figure 1 Framework of IEC 62333 series for noise suppression sheet Part 1: Definitions and general properties Suppression ratio (Rda, Rde, Rtpand Rrs) Others Part 2: Measuring methods Suppression ratio (Rda, Rde, Rtpand Rrs) Part 3: Characterization of p
27、arameters of noise suppression sheet Material properties Structure IEC 62333-1 IEC 62333-2 and IEC 62333-3 IEC 2618/09 BS EN 62333-3:2010 6 62333-3 IEC:2010 NOISE SUPPRESSION SHEET FOR DIGITAL DEVICES AND EQUIPMENT Part 3: Characterization of parameters of noise suppression sheet 1 Scope This part o
28、f IEC 62333 provides characterization of parameters for electromagnetic noise suppression sheet (NSS) for digital devices and equipment used in a frequency range between 30 MHz to 30 GHz. Guidance is given for uniform presentation of the properties of noise suppression sheet, intended for use in man
29、ufacturers and users technical data. NSS suppresses noise at its source, rather than absorbing noise at a distance. Therefore NSS is distinguished from RF wave absorbers used in free space. This standard addresses the following purposes of NSS manufacturers and users: it assists users in understandi
30、ng the published technical data in catalogues; it guides users in selecting the most preferable NSS for each application; it establishes measurement benchmarking for manufacturers of performance in new development of NSS; and it maintains high reliability of NSS and applied products. The numerical v
31、alues given in this standard are typical values of parameters (properties) of the related NSS. The purpose of NSS testing is the benchmarking of materials. Predictions of specific device performance values are not always easy or even possible. Every detailed material and NSS specification should be
32、agreed between the user and the manufacturer. 2 Normative references 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 a
33、mendments) applies. IEC 60068-1:1988, Environmental testing Part 1: General and guidance IEC 60068-2-1, Environmental testing Part 2-1: Tests Test A: Cold IEC 60068-2-2, Environmental testing Part 2-2: Tests Test B: Dry heat IEC 60093, Methods of test for volume resistivity and surface resistivity o
34、f solid electrical insulating materials ISO 527-1, Plastics Determination of tensile properties Part 1: General principles ISO 1183-1:2004, Plastics Methods for determining the density non-cellular plastics Part 1: immersion method, liquid pyknometer method and titration method ISO 3611, Micrometer
35、callipers for external measurement BS EN 62333-3:201062333-3 IEC:2010 7 ISO 22007-1, Plastics Determination of thermal conductivity and thermal diffusivity Part 1: General principles ISO 22007-2, Plastics Determination of thermal conductivity and thermal diffusivity Part 2: Transient plane heat sour
36、ce (Hot Disc) method ISO 22007-3, Plastics Determination of thermal conductivity and thermal diffusivity Part 3: Temperature wave analysis method ISO 22007-4, Plastics Determination of thermal conductivity and thermal diffusivity Part 4: Laser flash method 3 Terms and definitions For the purposes of
37、 this document, the following terms and definitions apply. 3.1 density ratio of the mass of a sample to its volume, expressed in kg/m3or g/cm3 3.2 specific gravity ratio of material density (mass per unit volume) at 23 C to the density of gas-free distilled water at 23 C 3.3 tensile strength M (Youn
38、gs modulus, Et) maximum tensile stress sustained by the test specimen during a tensile test. It is expressed in MPa ISO 527-1:1993, definition 4.3.3 4 General In selecting the optimum NSS, apart from the noise suppression ratios specified in Part 2, material properties and structure are important fa
39、ctors. Part 3 hereby, specifies measurement methods and data presentation methods of each parameter except suppression ratio of NSS. Part 2 gives guidance on suppression characteristics and this part gives guidance on the characteristics of NSS with regards to material properties and structure. The
40、material properties in this standard consist of surface resistivity; mechanical characteristics (density, Youngs modulus and/or hardness); thermal characteristics (thermal conductivity, thermal expansion coefficient); environmental conditions (operating and/or storage temperature, flammability). The
41、se parameters are required for indicating the installation availability and reliability after long time usage. The structures in this standard consist of thickness; BS EN 62333-3:2010 8 62333-3 IEC:2010 layer structure. These parameters are closely related to the four specific noise suppression effe
42、cts prescribed in Part 2. NOTE 1 The adhesive will have a direct influence on material properties. The definitions in this part are for NSS without adhesive. Manufacturers and users should make specific agreement concerning properties with adhesive. NOTE 2 Permeability is not a defined NSS material
43、characteristic or structure. Permeability is considered by the manufacturer in the design of the material, to achieve the target suppression properties in Part 2. NOTE 3 Manufacturers often recommend frequency ranges in their datasheets based on typical applications and operating conditions. Therefo
44、re, recommended frequency range is not included in material properties of this standard. 5 Parameters, descriptions and measuring methods 5.1 Material properties 5.1.1 Surface resistivity Surface resistivity shall be determined, and the results reported, as specified in IEC 60093:1980. Surface resis
45、tivity is the quotient of a d.c. electric field strength, and the linear current density in a surface layer of NSS. In practice it is taken as the surface resistance reduced to a square area. The size of the square is immaterial. NOTE The SI unit of surface resistivity is the ohm (). In practice, th
46、is is sometimes referred to as “ohms per square”. 5.1.2 Mechanical characteristics 5.1.2.1 Density Density shall be determined, and the results reported, by method A specified in ISO 1183-1. 5.1.2.2 Specific gravity Specific gravity can be converted to density (kg/cm3or g/cm3) by multiplying specifi
47、c gravity by 9,975x104or 0,997 5, respectively. 5.1.2.3 Tensile strength (Youngs modulus) Tensile testing is performed by elongating a specimen and measuring the load carried by the specimen. From knowledge of the specimen dimensions, the load and deflection data can be translated into a stress-stra
48、in curve. Results shall be reported as described in ISO 527-1. 5.1.3 Thermal conductivity a) Thermal conductivity () shall be determined with = Cp, where, is thermal diffusivity, Cp is specific heat and is density. Thermal diffusivity can be measured and determined by the following standards: ISO 22
49、007-1, ISO 22007-2, ISO 22007-3 and ISO 22007-4. The measuring standard used shall be identified, and the results shall be reported as described in that standard. b) Thermal conductivity should be measured under the standard atmospheric conditions specified in 5.3.1 of IEC 60068-1:1988. c) If additional data is necessary, the physical structure of the test and the test conditions should be noted. BS EN 62333-3:2010
