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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 29.100.10 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 125500:1996 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board an
3、d comes into effect on 15 December 1996 BSI 11-1998 The following BSI references relate to the work on this standard: 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
4、 Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials, upon which the following bodies were represented: Federation of the Electronics Industry Ministry of Defence National Supervising Inspectorate (BSI-PC) Amendments issued since publication Amd. No.DateCom
5、ments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 125500:1996 BSI 11-1998i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 1255003 List of referencesInside back cover Licensed Copy: s
6、heffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 125500:1996 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee EPL/51, and is the English language version of EN 125500:1996: Sectional specification: Magneti
7、c oxide ring cores for 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/SC 51
8、X, Magnetic components: 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 toCorresponding Britis
9、h Standard CECC 25000:1976BS CECC 25000:1977 Specification for harmonized system of quality assessment for electronic components: Generic specification: Inductor and transformer cores for telecommunications CECC 25300:1980BS CECC 25300:1981 Harmonized system of quality assessment for electronic comp
10、onents: sectional specification: magnetic oxide cores for power applications (EN 60068-1:1994BS EN 60068 Environmental testing (IEC 68-1:19881)BS EN 60068-1:1995 General and guidance IEC 205:1966BS 6454:1983 Method for calculation of the effective IEC 205A:1968parameters of magnetic piece parts IEC
11、205B:1974 IEC 367BS 5938 Cores for inductors and transformers for telecommunications IEC 367-1:1982Part 1:1984 Methods of measurement IEC 367-2:1974Part 2:1980 Guide to the drafting of performance specifications IEC 424:1973BS 6786:1986 Guide to the specification of limits for physical imperfections
12、 of parts made 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. Summa
13、ry of pages 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 tab
14、le on the inside front cover. 1) The text refers to IEC 68-1. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 125500 June 1996 ICS 29.100.10 Descriptors: Magnetic oxide ring cores, interfe
15、rence suppression, low level signal transformer, identification, marking, characteristics English version Sectional specification: Magnetic oxide ring cores for interference suppression and low level signal transformer applications Spcification intermdiaire: Noyaux toriques en oxyde magntique pour a
16、pplications dantiparasitage et transformateurs faibles signaux Rahmenspezifikation: Ferritringkerne fr Entstrfilter und Breitbandbertrageranwendungen This European Standard was approved by CENELEC on 1995-07-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stip
17、ulate 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 European Standa
18、rd 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 are the nationa
19、l electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisat
20、ion Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1996 Copyright reserved to CENELEC members Ref. No. EN 125500:1996 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) B
21、SI EN 125500:1996 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 publications of the International Electrotechnical Commission and in particul
22、ar on IEC 367 Cores for inductors and transformers for telecommunications. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 125500 on 1995-07-04. The following dates were fixed: Contents Page Foreword2 1Scope3 2General3 2.1Related documents3 2.2Classification3
23、 3Quality assessment procedures3 4Additional information3 5Blank Detail Specification3 5.1Identification of the harmonized Detail Specification4 5.2Identification of the core4 5.3Limiting conditions4 5.4Marking of components and package4 5.4.1 Component4 5.4.2 Package4 5.5Characteristics4 5.5.1 Visu
24、al inspection4 5.5.2 Dimensions4 5.5.3 Effective parameters4 5.5.4 Electrical properties4 5.6Certified test records4 5.7Additional information5 5.8Ordering information5 5.9Format of the Detail Specification CECC 25 5015 Annex A Breakdown voltage test of insulated ferrite ring cores Measurement princ
25、iple8 Annex B European standard series of ring cores9 Figure A.1 Method A Measurement principle8 Figure A.2 Method B1 Measurement principle9 Figure A.3 Method B2 Measurement principle9 Table 1 Quality conformance inspection3 Table B.1 Nominal dimensions of standardized ring cores10 Table B.2 Dimensi
26、onal limits of standardized ring cores11 Table B.3 Effective parameter values of standardized ring cores11 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-09-01 latest date by which the national standard
27、s conflicting with the EN have to be withdrawn(dow) 1996-09-01 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 125500:1996 BSI 11-19983 1 Scope This Sectional Specification prescribes the characteristics, ratings and inspection requiremen
28、ts 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 to impr
29、ove 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 25 300. Ring cores used for other applications
30、 (e.g. pulse, memory storage) are not considered here. It selects from the Generic Specification CECC 25 000, 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 specifications. Eac
31、h 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 25 000 and any other reference documents, as appropriate. 2.2 Classification A core is classi
32、fied 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, eac
33、h 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 The te
34、sts 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 CECC 25 000. Table 1 Quality conformance inspection 4 Additional information Additional information
35、 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 the h
36、armonized 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. GroupTestInspection level AQL % A lot by lot Visual examination, Marking I1 DimensionsI1 Low frequency properties:
37、 Inductance factor (AL ) I 1 Loss factor (tg/) or Quality factor (Q) (if required) S34 High frequency properties, If required: Inductance factor (AL ) I 1 Parallel resistance (Rp) S34 B lot by lot voltage breakdown (U) (only for insulated ring cores) I1 Licensed Copy: sheffieldun sheffieldun, na, Sa
38、t Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 125500:1996 4 BSI 11-1998 5.1 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 wh
39、ich shall not be exceeded, shall be stated as absolute values, e.g. temperature range for initial permeability or frequency range, climatic category rating (IEC 68-1). Any known interdependence of these conditions shall also be stated. Storage conditions: 1) for uninsulated magnetic oxide cores: e.g
40、. 55 C to + 100 C 2) for insulated magnetic oxide cores, depending on the type of insulation, a 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
41、 (minimum information in the following sequence) Detail Specification reference Manufacturers component designation reference and name of manufacturer or trademark Manufacturer batch identification code Quantity AL value 5.5 Characteristics 5.5.1 Visual inspection The conditions, workmanship and fin
42、ish shall be satisfactory as determinated by visual examination. The permissibility of any physical imperfections shall be judged on the basis of IEC 424. Sharp edges are not allowed. 5.5.2 Dimensions Dimensions must be in accordance with the relevant drawings. 5.5.3 Effective parameters The effecti
43、ve parameters are calculated in accordance with IEC 205. 5.5.4 Electrical properties 5.5.4.1 Low 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 25 000). 5.5.4.1.2 if required, tan r+F or tan r+F/i specify winding, f, B, N; indicate
44、 U (test according to 4.10.4 of CECC 25 000) 5.5.4.2 High frequency properties, if required 5.5.4.2.1 AL, specify winding, B, f, T; indicate U (test according to 4.3, 4.5 and 4.6 of CECC 25 000. 5.5.4.2.2 tan r+F or tan r+F/i (test according to 4.10.4 of CECC 25 000) or Rp. Specify winding, f, B; in
45、dicate U. 5.5.4.3 Voltage breakdown, only for insulated cores Specify U (kV) and the measuring method (see Annex A). 5.6 Certified test records According to 3.6 of CECC 25 000, the certified test records shall contain attributes information from Group B test. When Certified test records are not requ
46、ired for the Detail Specification, this shall be included by the statement: “Not applicable”. The 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 Secretari
47、at. 2 The number and issue number of the national Generic Specification. 3 The national number 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
48、 and the grade of material. 5 Typical construction (core shape, size and type of insulation). 6 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. 8 Licensed Copy: sheffieldun sheffieldun, na, Sat
49、Oct 28 07:15:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 125500:1996 BSI 11-19985 5.7 Additional information As appropriate: e.g. application information 5.8 Ordering information 5.8.1 Detail Specification reference 5.8.2 Manufacturers component designation reference 5.8.3 Other information specified by the manufacturer to identify the product 5.8.4 AL value 5.9 Format of the Detail Specification CECC 25 501 (see pages 8 to 11) 12 Specification available from:CEC
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