1、BRITISH STANDARD BS EN 125500:1996 Harmonized system of quality assessment for electronic components Sectional specification Magnetic oxide ring cores for interference suppression and low level signal transformer applications The European Standard EN 125500:1996 has the status of a British Standard
2、ICS 29.100.10BSEN125500:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1996 BSI 11-1998 The following BSI references relate to the work on this st
3、andard: Committee reference EPL/51 Draft for comment 90/33979 DC ISBN 0 580 26344 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials, upon which th
4、e following bodies were represented: Federation of the Electronics Industry Ministry of Defence National Supervising Inspectorate (BSI-PC) Amendments issued since publication Amd. No. Date CommentsBSEN125500:1996 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword
5、 ii Foreword 2 Text of EN 125500 3 List of references Inside back coverBSEN125500:1996 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee EPL/51, and is the English language version of EN125500:1996: Sectional specification: Magnetic oxide ring cores for
6、interference suppression and low level signal transformer applications published by the Electronic Components Committee (CECC) of the European Committee for Electrotechnical Standardization (CENELEC). EN 125500 has been prepared by the Technical Committee CENELEC/TC CECC/SC51X, Magnetic components:
7、Cores and soft magnetic materials, and the United Kingdom participation in the drafting of this standard was provided by Technical Committee EPL/51 Transformers, inductors, magnetic components and ferrite materials. Cross-references Publication referred to Corresponding British Standard CECC 25000:1
8、976 BS CECC 25000:1977 Specification for harmonized system of quality assessment for electronic components: Generic specification: Inductor and transformer cores for telecommunications CECC 25300:1980 BS CECC 25300:1981 Harmonized system of quality assessment for electronic components: sectional spe
9、cification: magnetic oxide cores for power applications (EN 60068-1:1994 BS EN 60068 Environmental testing (IEC 68-1:1988 1) ) BSEN60068-1:1995 General and guidance IEC 205:1966 BS 6454:1983 Method for calculation of the effective IEC 205A:1968 parameters of magnetic piece parts IEC 205B:1974 IEC 36
10、7 BS 5938 Cores for inductors and transformers for telecommunications IEC 367-1:1982 Part 1:1984 Methods of measurement IEC 367-2:1974 Part 2:1980 Guide to the drafting of performance specifications IEC 424:1973 BS 6786:1986 Guide to the specification of limits for physical imperfections of parts ma
11、de from magnetic oxides A British Standard does not purport 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
12、This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 12, 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 theins
13、ide front cover. 1) The text refers to IEC68-1.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 125500 June 1996 ICS 29.100.10 Descriptors: Magnetic oxide ring cores, interference suppression, low level signal transformer, identification, marking, characteristics English version Sectional specif
14、ication: Magnetic oxide ring cores for interference suppression and low level signal transformer applications Spcification intermdiaire: Noyaux toriques en oxyde magntique pour applications dantiparasitage et transformateurs faibles signaux Rahmenspezifikation: Ferritringkerne fr Entstrfilter und Br
15、eitbandbertrageranwendungen This European Standard was approved by CENELEC on 1995-07-04. 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-dat
16、e lists and bibliographical references concerning such national standards 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
17、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 are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lux
18、embourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland 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 Brus
19、sels 1996 Copyright reserved to CENELEC members Ref. No. EN 125500:1996 EEN125500:1996 BSI 11-1998 2 Foreword This European Standard was prepared by the Technical Committee CENELEC/TC CECC/SC 51X, Magnetic components: Cores and soft magnetic materials. It is based, wherever possible, on the publicat
20、ions of the International Electrotechnical Commission and in particular on IEC367 Cores for inductors and transformers for telecommunications. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN125500 on 1995-07-04. The following dates were fixed: Contents Page F
21、oreword 2 1 Scope 3 2 General 3 2.1 Related documents 3 2.2 Classification 3 3 Quality assessment procedures 3 4 Additional information 3 5 Blank Detail Specification 3 5.1 Identification of the harmonized Detail Specification 4 5.2 Identification of the core 4 5.3 Limiting conditions 4 5.4 Marking
22、of components and package 4 5.4.1 Component 4 5.4.2 Package 4 5.5 Characteristics 4 5.5.1 Visual inspection 4 5.5.2 Dimensions 4 5.5.3 Effective parameters 4 5.5.4 Electrical properties 4 5.6 Certified test records 4 5.7 Additional information 5 5.8 Ordering information 5 5.9 Format of the Detail Sp
23、ecification CECC 25501 5 Annex A Breakdown voltage test of insulated ferrite ring cores Measurement principle 8 Annex B European standard series of ring cores 9 Figure A.1 Method A Measurement principle 8 Figure A.2 Method B1 Measurement principle 9 Figure A.3 Method B2 Measurement principle 9 Table
24、 1 Quality conformance inspection 3 Table B.1 Nominal dimensions of standardized ring cores 10 Table B.2 Dimensional limits of standardized ring cores 11 Table B.3 Effective parameter values of standardized ring cores 11 latest date by which the EN has to be implemented at national level by publicat
25、ion of an identical national standard or by endorsement (dop) 1996-09-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1996-09-01EN125500:1996 BSI 11-1998 3 1 Scope This Sectional Specification prescribes the characteristics, ratings and inspection re
26、quirements of assessed quality for ring cores made of soft magnetic oxides and iron powders. Such cores are intended for chokes for interference suppression and also for low level signal transformers for professional and industrial applications (see note below). In order to increase winding ease and
27、 to improve voltage breakdown, the cores are often provided with protective coatings. In annex A methods for testing voltage breakdown are given; in annex B a standard series of ring cores is listed. NOTERing cores used for power application are covered by CECC 25300. Ring cores used for other appli
28、cations (e.g. pulse, memory storage) are not considered here. It selects from the Generic Specification CECC 25000, the appropriate methods of test to be used in Detail Specifications derived from this specification, and contains the test schedules to be used in the preparation of such specification
29、s. Each test schedule, referenced by a CECC number, when taken with the appropriate information in clause 5 of this specification, forms a Blank Detail Specification. 2 General 2.1 Related documents Document CECC 25000 and any other reference documents, as appropriate. 2.2 Classification A core is c
30、lassified by: shape: ring core (form of cross section may be different) size: e.g. 10 6 4 mm grade: (combined electromagnetic properties, e.g. initial permeability as function of temperature and frequency). Since no systematic classification of the electromagnetic properties is available in the CECC
31、 each Detail Specification shall clearly define the grade to which it applies. It may also state the appropriate grade designation. insulation: (if required) e.g. by coating Normally, a Detail Specification will cover cores of one shape, size, grade and insulation. 3 Quality assessment procedures T
32、he tests given in Table 1 shall be included in each Detail Specification for magnetic oxide ring cores. These tests shall be carried out in accordance with measuring methods presented in clauses 2 and 4 of CECC25000. Table 1 Quality conformance inspection 4 Additional information Additional informat
33、ion in the form of curves and graphs may be given by the manufacturers. This should not be used for inspection purposes. 5 Blank Detail Specification The following information should be included in each Detail Specification together with the required values. The general data necessary to identify th
34、e harmonized Detail Specification and the component shall preferably be presented as shown in 5.9. Numbers between square brackets on page 8 correspond to indications given in 5.1 and 5.2. Group Test Inspection level AQL % A lot by lot Visual examination, Marking I 1 Dimensions I 1 Low frequency pro
35、perties: Inductance factor (A L ) I 1 Loss factor (tgd/) or Quality factor (Q) (ifrequired) S3 4 High frequency properties, If required: Inductance factor (A L ) I 1 Parallel resistance (R p ) S3 4 B lot by lot voltage breakdown (U) (only for insulated ring cores) I 1EN125500:1996 4 BSI 11-1998 5.1
36、Identification of the harmonized Detail Specification 5.2 Identification of the core 5.3 Limiting conditions (not for inspection purposes) Operating conditions: Any mechanical or environmental conditions which shall not be exceeded, shall be stated as absolute values, e.g. temperature range for init
37、ial permeability or frequency range, climatic category rating (IEC68-1). Any known interdependence of these conditions shall also be stated. Storage conditions: 1) for uninsulated magnetic oxide cores: e.g. 55 C to + 100 C 2) for insulated magnetic oxide cores, depending on the type of insulation, a
38、 restricted temperature range may be required. 5.4 Marking of components and package 5.4.1 Component (minimum information) grade or designation of material (e.g. indicated by a colour coding) 5.4.2 Package (minimum information in the following sequence) Detail Specification reference Manufacturers c
39、omponent designation reference and name of manufacturer or trademark Manufacturer batch identification code Quantity A Lvalue 5.5 Characteristics 5.5.1 Visual inspection The conditions, workmanship and finish shall be satisfactory as determinated by visual examination. The permissibility of any phys
40、ical imperfections shall be judged on the basis of IEC424. Sharp edges are not allowed. 5.5.2 Dimensions Dimensions must be in accordance with the relevant drawings. 5.5.3 Effective parameters The effective parameters are calculated in accordance with IEC205. 5.5.4 Electrical properties 5.5.4.1 Low
41、frequency properties 5.5.4.1.1 AL, Specify winding, B, f, T; indicate U (test according to 4.3, 4.5 and 4.6 of CECC 25000). 5.5.4.1.2 if required, tand r+For tand r+F / i specify winding, f, B, N; indicate U (test according to 4.10.4 of CECC25000) 5.5.4.2 High frequency properties, if required 5.5.4
42、2.1 A L , specify winding, B, f, T; indicate U (test according to 4.3, 4.5 and 4.6 of CECC 25000. 5.5.4.2.2 tand r+For tand r+F / i (test according to4.10.4 of CECC 25000) or R p . Specify winding, f, B; indicate U. 5.5.4.3 Voltage breakdown, only for insulated cores Specify U (kV) and the measurin
43、g method (seeAnnex A). 5.6 Certified test records According to 3.6 of CECC 25000, the certified test records shall contain attributes information from Group B test. When Certified test records are not required for the Detail Specification, this shall be included by the statement: “Not applicable”. T
44、he name of the National Standards Organization under whose authority the Detail Specification is drafted. 1 The CECC number of the relevant Blank Detail Specification allotted by the CECC General Secretariat. 2 The number and issue number of the national Generic Specification. 3 The national number
45、of the Detail Specification, date of issue and any further information required by the national system. 4 Magnetic oxide ring core for interference suppression and low level signal transformer applications and the grade of material. 5 Typical construction (core shape, size and type of insulation). 6
46、 Detail drawing and dimensions (cf. 5.5.2), showing the outlines of the edges. 7 Application or group of applications covered by the Detail Specification. 8EN125500:1996 BSI 11-1998 5 5.7 Additional information As appropriate: e.g. application information 5.8 Ordering information 5.8.1 Detail Specif
47、ication reference 5.8.2 Manufacturers component designation reference 5.8.3 Other information specified by the manufacturer to identify the product 5.8.4 A Lvalue 5.9 Format of the Detail Specification CECC 25501 (see pages 8 to 11) 1 2 Specification available from: CECC 25501 4 3 ELECTRONIC COMPONE
48、NTS OF ASSESSED QUALITY DETAIL SPECIFICATION IN ACCORDANCE WITH 7 5 Outline and dimensions: 5.5.2 Magnetic Oxide Ring Cores for Interference Suppression and low level Signal Transformer: Class 6 8 9 Effective parameters 5.5.3 Information about manufacturers who have components qualified to this deta
49、il specification is available in the current CECC00200: Qualified Products List.EN125500:1996 6 BSI 11-1998 5.3 Limiting conditions (not for inspection purposes) values Operating conditions: Temperature range Frequency range Storage conditions either for uninsulated oxide cores or for insulated cores 5.4 Marking of components and package 5.4.1 Component Grade of material 5.4.2 Packaging Detail Specification reference Manufacturers component des
