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1、BRITISH STANDARD BS EN 61248-1:1997 IEC 61248-1: 1996 Transformers and inductors for use in electronic and telecommunication equipment Part 1: Generic specification The European Standard EN 61248-1:1997 has the status of a British Standard ICS 29.180 Licensed Copy: sheffieldun sheffieldun, na, Fri N
2、ov 10 13:38:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61248-1:1997 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 November 1997 BSI 04-2000 ISBN 0 580
3、 28434 4 National foreword This British Standard is the English language version of EN 61248-1:1997. It is identical with IEC 61248-1:1996. The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials, which h
4、as the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in
5、 the UK. A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over
6、from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European pu
7、blications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British S
8、tandard 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 This document comprises a front cov
9、er, an inside front cover, pages i and ii, the EN title page, pages 2 to 25 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 the inside front cover. Amendments issued since publication Amd
10、. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61248-1:1997 BSI 04-2000i Contents Page National forewordInside front cover Foreword2 Text of EN 61248-13 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46
11、 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61248-1 August 1997 ICS 29.180Supersedes EN 126000:1992 Descriptors: Transformers and i
12、nductors, generic specification, tests, capability approval English version Transformers and inductors for use in electronic and telecommunication equipment Part 1: Generic specification (IEC 61248-1:1996) Transformateurs et inductances destins aux quipements lectroniques et de tlcommunications Part
13、ie 1: Spcification gnrique (CEI 61248-1:1996) Transformatoren und Drosseln fr elektronische und nachrichtentechnische Einrichtungen Teil 1: Fachgrundspezifikation (IEC 61248-1:1996) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CEN/CENELEC
14、 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 the Central Secretariat or to any CENE
15、LEC 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 same status as the official versions.
16、 CENELEC members are the national 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 Standardiza
17、tion 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 worldwide for CENELEC members. Ref. No. EN 61248-1:1997 E Licen
18、sed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61248-1:1997 BSI 04-2000 2 Foreword The text of the International Standard IEC 61248-1:1996, prepared by IEC TC 51, Magnetic components and ferrite materials, was submitted to the Unique Acceptan
19、ce Procedure and was approved by CENELEC as EN 61248-1 on 1997-07-01 without any modification. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex ZA is normative
20、 and Annex A and Annex B are informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61248-1:1996 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword2 1General3 1.1Scope3 1.2Normative references3 1.3Ge
21、neral considerations4 1.4Terminology5 1.5AQLs for particular parameter and for the whole sample of components5 1.6Letter symbols, signs and abbreviations5 1.7Graphical symbols5 1.8Marking of the component and package5 1.9Structurally similar components5 1.10 Delayed delivery5 1.11 Certified test rec
22、ords5 1.12 Standard ratings and characteristics6 1.13 Ordering information7 1.14 Quality conformance inspection7 2Tests7 3Capability approval procedures7 3.1Eligibility for capability approval7 3.2Application for capability approval8 3.3Description of capability9 3.4Appraisal of capability9 3.5Annou
23、ncement of capability approval17 3.6Maintenance of capability approval18 3.7Changes to the approved capability19 Annex A (informative) Sample format for certified test record21 Annex B (informative) Sample format for abstract of description of capability for inclusion in QC 001005 (IECQ Register of
24、approval)21 Annex ZA (normative) Normative references to international publications with their corresponding European publications24 Index29 Table 1 Sample selection and test flow chart for the appraisal of capability11 Table 2 Sample selection and test flow chart for the maintenance of capability a
25、pproval20 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1998-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1998-06-01 Licensed Copy: sheffieldun sheffie
26、ldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61248-1:1997 BSI 04-20003 1 General 1.1 Scope This part of IEC 1248 is a generic specification which prescribes the compliance requirements for manufacturers of transformers and inductors for use in electronic equipment in o
27、rder to obtain capability approval in accordance with 11.7 of QC 001002, and the component test schedules to be used for the assessment of that capability. It applies to components, including polyphase types, that are primarily intended for use in electronic and telecommunication equipment. This spe
28、cification also prescribes requirements for marking, delayed delivery and ordering, and lists standard ratings and characteristics. In addition, it specifies how quality conformance testing should be carried out on ordered components. NOTEThe transformers and inductors that are the subject of this s
29、pecification may include other components essential to the operation of the device, e.g. capacitors associated with constant voltage transformers and resonated windings. 1.2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute p
30、rovisions of this part of IEC 1248. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 1248 are encouraged to investigate the possibility of applying the most recent editions of the norma
31、tive documents listed below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC Guide 102:1989, Electronic components. Specification structures for quality assessment (Qualification approval and capability approval). IEC QC 001001:1986, Basic rules of the IEC Q
32、uality Assessment System for Electronic Components (IECQ). Amendment 2 (1994) IEC QC 001002:1986, Rules of procedure of the IEC Quality Assessment System for Electronic Components (IECQ). Amendment 2 (1994) IEC QC 001004, Specifications list. IEC QC 001005, Register of firms, products and services a
33、pproved under the IECQ System, including ISO 9000. IEC 50, International Electrotechnical Vocabulary (IEV). IEC 68-1:1988, Environmental testing Part 1: General and guidance. Amendment 1 (1992) IEC 68-2, Environmental testing Part 2: Tests. IEC 68-2-1:1990, Environmental testing Part 2: Tests Tests
34、A: Cold. Amendment 1 (1993), Amendment 2 (1994) IEC 68-2-2:1974, Environmental testing Part 2: Tests Tests B: Dry heat. Amendment 1 (1993), Amendment 2 (1994) IEC 68-2-3:1969, Environmental testing Part 2: Tests Test Ca: Damp heat, steady state. IEC 68-2-6:1982, Environmental testing Part 2: Tests T
35、est Fc and guidance: Vibration (sinusoidal). IEC 68-2-7:1983, Environmental testing Part 2: Tests Test Ga and guidance: Acceleration, steady state. Amendment 1 (1986) IEC 68-2-13:1983, Environmental testing Part 2: Tests Test M: Low air pressure. IEC 68-2-14:1984, Environmental testing Part 2: Tests
36、 Test N: Change of temperature. Amendment 1 (1986) IEC 68-2-17:1994, Environmental testing Part 2: Tests Test Q: Sealing. IEC 68-2-20:1979, Environmental testing Part 2: Tests Test T: Soldering. Amendment 2 (1987) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncont
37、rolled Copy, (c) BSI EN 61248-1:1997 4 BSI 04-2000 IEC 68-2-21:1983, Environmental testing Part 2: Tests Test U: Robustness of terminations and integral mounting devices. Amendment 2 (1991), Amendment 3 (1992) IEC 68-2-27:1987, Environmental testing Part 2: Tests Test Ea and guidance: Shock. IEC 68-
38、2-29:1987, Environmental testing Part 2: Tests Test Eb and guidance: Bump. IEC 68-2-58:1989, Environmental testing Part 2: Tests Test Td: Solderability, resistance to dissolution of metallization and to soldering heat of Surface Mounting Devices (SMD). IEC 76-1:1993, Power transformers Part 1: Gener
39、al. IEC 367-1:1982, Cores for inductors and transformers for telecommunications Part 1: Measuring methods. Amendment 1 (1984), Amendment 2 (1992) IEC 410:1973, Sampling plans and procedures for inspection by attributes. IEC 617, Graphical symbols for diagrams. IEC 651:1979, Sound level meters. Amend
40、ment 1 (1993) IEC 695, Fire hazard testing. IEC 723, Inductor and transformer cores for telecommunication. IEC 852-5:1994, Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment Part 5: Transformers and inductors using the series Q of C-cores. IEC 1007
41、:1994, Transformers and inductors for use in electronic and telecommunication equipment Measuring methods and test procedures. ISO 31, Quantities and units. 1.3 General considerations For convenience, the following outline of the sequence of events in the capability approval procedure is given. a) A
42、 manufacturer wishing to obtain capability approval writes a capability manual which clearly defines the scope of his design capability, manufacturing processes and quality control, to the satisfaction of the National Supervising Inspectorate (NSI). b) The manufacturer, in collaboration with the NSI
43、, selects sample components to demonstrate the limits of this scope, and the sample is assessed. c) These components are submitted to a test programme in accordance with clause 3 of this generic specification. d) When testing is successfully completed and the manufacturers systems approved against t
44、he capability manual, capability approval is granted and the fact is published in QC 001005. The capability approval is maintained by periodic testing of sample components at the limits of the scope of the capability. e) A potential customer makes an enquiry to the manufacturer for components within
45、 the scope of capability published in QC 001005 (or by CODUS). f) The specification will be decided by the following two methods: 1) the specification is negotiated between the manufacturer and the customer until an agreed detail specification is finalized; 2) the detail specification is prepared by
46、 the manufacturer for his series of catalogue products. The customer will check the detail specification which will be modified by the customers request if necessary. NOTEThe detail specification is preferably based on one of the blanks included in the appropriate sectional specification. g) The man
47、ufacturer allocates a reference number to the resulting detail specification which is filed and is available for scrutiny by the NSI. The component is inspected and released in accordance with this specification. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:38:46 GMT+00:00 2006, Uncontr
48、olled Copy, (c) BSI EN 61248-1:1997 BSI 04-20005 1.4 Terminology For the purposes of this specification, the definitions of IEC 1007 apply, together with those given in IEC 50 and IEC 410. 1.5 AQLs for particular parameter and for the whole sample of components 1.5.1 AQL for particular parameter (PA
49、QL) The AQLs ratings designated for particular parameters listed in the inspection requirements of the detail specifications are the maximum numbers of defects per hundred units. 1.5.2 AQL for the whole sample of components (SAQL) The AQLs can be designated as the maximum percent defective for the whole sample of components, as defined in 3.4.1.1, or for a selected group (or groups) of parameters specified in the CQC schedules and listed in 3.4.2 (e.g. for the group or groups of par