1、STD-BSI BS EN b12Y8-5-ENGL 1777 Lb2YbbS Db58803 2011 BRITISH STANDARD Tkansformers and inductors for use in electronic and telecommunication equipment Part 5. Sectional specification for pulse transformers on the basis of the capability approval procedure * rn * The European Standard EN 612485 : 199
2、7 has the status of a British Standard ICs 29.180 BS EN 61248-5 : 1997 IEC 61248-5 : 1996 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGK LAW BS EN 61248-6 : 1997 Amd.No. National foreword Date Text affected This British Standard is the English language version of EN 612485 : 1997.
3、 It is identical with IEC 612485 : 1996. The UK participation in its preparation was entrusted to Technical Committee EPM1, lkmsformers, inductors, magnetic components and ferrite materials, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible interna
4、tionfluropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related intemational and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its se
5、cretaxy. 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 from one numbering system to the other, publications may contain identifiers from both systems. Cro
6、ss-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 publications. The British Standards which implement these international or European publications may
7、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. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Sta
8、ndard, having been prepared under the direction of the Electrotechnicai Sector Board, was published under the authority of the Standards Board and comes into effect on 15 November 1997 O BSI 1997 ISBN O 580 28431 X Summary of pages This document comprises a front cover, an inside front cover, the EN
9、 title page, pages 2 to 14, an inside back cover and a back cover. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61 248-5 August 1997 ICs 29.1 80 Descriptors: Pulse transformers, sectional specification, capability approval, preparation of the detail preparation, inspection requirements, deta
10、il specification English version Transformers and inductors for use in electronic and telecommunication equipment Part 5: Sectional specification for pulse transformers on the basis of the capability approval procedure (IEC 6 1 248-5: 1 996) Transformateurs et inductances destins aux quipements lect
11、roniques et de tlcommunications Einrichtungen Partie 5: Spcification intermdiaire pour les transformateurs dimpulsions sur la base de la procdure de Transformatoren und Drosseln fr elektronische und nachric htentec hnisc he Teil 5: Rahmenspezifikation fr Impulstransformatoren mit Befhigung saner ken
12、nung lagrment de savoir-faire (CE1 61 248-5: 1996) (IEC 61 248-5:1996) This European Standard was approved by CENELEC on 1997-07-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national
13、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 Standard exists in three official versions (English, French, German). A version in any
14、 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 national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Ger
15、many, Greece, Iceland, Ireland, Italy, Luxembourg, 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 Se
16、cretariat: 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 61248-5:1997 E STD*BSI BS EN bL248-5-ENGL 1997 m Lb24bbS Ob5880b TLT m Page 2 EN 61248-5 : 1997 Foreword The text of the Interna
17、tional Standard IEC 61 248-5:1996, prepared by IEC TC 5 1, Magnetic components and ferrite materials, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 61 248-5 on 1997-07-01 without any modification. The following dates were fixed: - latest date by which the EN has
18、to be implemented at national levei by publication of an identical national standard or by endorsement (dopl 1998-06-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1998-06-01 Annexes designated “normative“ are part of the body of the standard. In
19、this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61 248-5:1996 was approved by CENELEC as a European Standard without any modification. STD-BSI BS EN b1248-5-ENGL 1797 W Lb24bbS b58807 95b = Page 3 EN 61248-5 : 19
20、97 CONTENTS Clause Page Scope . . . . . . . . Normative references Preparation of the detail specification 3.1 General 3.2 Ratings and characteristics i 3.3 Outline drawings and winding schematic diagram . Inspection requirements to be listed in the detail specification . 4.1 Conformance inspection
21、4.2. Design verification Detail specification . Blank detail specrfcation . Annex ZA (nonnative) Nonnative references to international publications with their corresponding European publications . 3 3 5 6 6 6 7 7 7 7 8 13 * * VI Q BSI 1997 Page 4 EN 61248-5 1997 TRANSFORMERS AND INDUCTORS FOR USE IN
22、ELECTRONIC AND TELECOMMUNICATION EQUIPMENT - Part 5: Sectional specification for pulse transformers on the basis of the capability approval procedure 1 Scope This part of IEC 1248 specifies how to prepare detail specifications for pulse transformers to be released under the terms of IEC 1248-1 (QC 2
23、60000) capability approval. It includes a blank detail specification (BDS), which shows the format and indicates which tests are considered to be appropriate to this type of component, although the final selection of tests to be included in the inspection schedule is at the discretion of the specifi
24、cation writer. It also lists appropriate ratings and characteristics. The components covered by this part of IEC 1248 are essentially concerned with uni-directional pulses and the transfer of the energy and signals of these pulses from one section of a circuit to another. Whilst no specific dividing
25、 line is practicable, low power pulse transformers are regarded as transferring information and high power pulse trans- formers are regarded as transferring power. 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provision
26、s of this part of IEd 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 normative doc
27、uments listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC Guide 102: 1989, Electronic components - Specification stmctures for quality assess- ment (Qualification approval and capability approval) IEC QC 001001: 1986, Basic rules of the EC Quality
28、 Assessrnent System for Electronic Components (ECO) Amendment 2 (1994) IEC QC 001002: 1986, Rules of procedure of the IEC Quality Assessment System for Electronic Components (If CQ) Amendment 2 (1994) IEC QC 001004: SpecificatiQns list IEC QC 001005: Register of firms. products and services approved
29、 under the IECQ System, including IS0 9000 IEC 68-2: Environmental testing - Parf 2: Tests IEC 68-2-6: 1982, Environmental testing - Parf 2: Tests - Test Fc and guidance: Vibration (sinusoidal) Page 5 EN 61248-5 : 1997 IEC 68-2-1 4: 1 984, Environmental testing - Part 2: Tests - Test N: Change of te
30、mperature Amendment 1 (1986) IEC 68-2-20: 1979, Environmental testing - Part 2: Tests - fest T: Soldering Amendment 2 (1987) IEC 68-2-21: 1983, Environmental testing - Part 2: Tests - Test U: Robustness of ter- minations and integral mounting devices Amendment 2 (1991), Amendment 3 (1992) IEC 68-2-2
31、7: 1987, Environmental testing - Part 2: Tests - fest Ea and Guidance: Shock IEC 68-2-29: 1987, Environmental testing - Part 2: Tests - Test Eb and Guidance: Bump IEC 41 O: 1973, Sampling plans and procedures for inspection by attributes IEC 1007: 1994, Transformers and inductors for use in electron
32、ic and telecommunication equipment - Measuring methods and test procedures IEC 1248-1 : 1996, Transformers and inductors for use in electronic and telecornmunication equipment - Patt 1: Generic specification IS0 128: 1982, Technical drawings - Generai principles of presentation IS0 129: 1985, Techni
33、cal drawings - Dimensioning - General principles, definitions, methods of execution and special indications 3 Preparation of the detail speciflcation This standard is intended to be used for the preparation of detail specifications for pulse transformers released under the terms of IEC 1248-1 (QC 26
34、0000) capability approval procedure. It is intended for use by the following originators: a) a customer wishing to procure pulse transformers that are within the scope of the approved capability of his supplying component manufacturer, for example for detail specifications (DS); b) a capability-appr
35、oved manufacturer of pulse transformers wishing to prepare specifi- cations for his own products which are within the scope of his capability approval. NOTES 4 The detail specification should take the form of the BDS shown in clause 5, particularly in respect of the front page format and. in princip
36、le. in respect of the presentation of the inspection requirements. 2 Unless otherwise specified, all the tests shown in the BOS are taken from IEC 1007. Those shown underlined concern operating characteristics of fundamental importance, and it is strongly recommended that these are selected by the s
37、pecification writer for inclusion in the detail specification. The tes. b) tests in a group may be carried out in any order, except where otherwise indicated (see 3.1.3); c) components submitted to any tests marked (D) may not be released under IEC 1248-1 capability approval (D = destructive); d) th
38、e values given for measurement limits are absolute values: measurement uncer- tainty is to be taken into account. 4.2 Design verification The tests to be detailed under this heading are those which the specification writer considers to be inappropriate to lot-by-lot release, but appropriate to the v
39、erification of new and original designs. Accordingly, they are to be performed only when specifically so stated in the order, and the detail specification shall carry a statement to this effect. If design verification is required, the number of specimens and the requirement that there shall be no fa
40、ilures shall be stated in the detail specification. NOTE - Two specimens should normally be provided, unless otherwise stated. 5 Detail specification The BDS which follows, when completed in accordance with clause 3, shall form the relevant detail specification. NOTE - The front page of the BDS has
41、been based upon the need for a customers detail specification. Where a manufacturers detail specification is required, some changes will be necessary, but the basic for- mat should be retained. STD-BSI BS EN b1248-5-ENGL 1777 H Lb2LibbS b588L2 213 = Specification available from: Page 8 EN 61248-6 :
42、1997 ISSUE STATUS DATE Blank detail specification Sheet 1 (of 5) Originators component identity number PULSE TRANSFORMER BRIEF TECHNICAL DESCRIPTION 1) Core type and type of construction 2) Range of core size, pulse wave form, frequency range For detail dimensions and schematic diagram, see sheet 5.
43、 IECQ Register of approvals (QC 001005, Part 2, Section 1) Rules for variants Additional capability Manufacturer Address Capability approval No. Manufacturers reference number QC 260400lPQ W 1 234 (Continued on page 17) STD-BSI BS EN bL248-5-ENGL 1997 m Lb24bbS Ob58813 L5T m Page 9 EN 61248-6 : 1997
44、 Blank detall SpeClflCatiOn (continued) Sheet 2 (of 5) I Originators component identity number Pulse transformer according to IEC 1248-5 (OC 260400) ISSUE STATUS RATINGS AND CHARACTERISTICS (see 3.2 Of IEC 1248-5) Climatic category (see 3.2.2.2 of IEC 1248-1 (QC 260000) Maximum temperature range (st
45、orageltran sport) Maximum temperature rise Mass Vibration (sinusoidal) (see IEC 68-2-6) DATE Bump (see IEC 68-2-29) Shock (see IEC 68-2-27) Solderability (see IEC 68-2-20) Robustness of terminations (see IEC 68-2-21) Rapid change of temperature (see test Na of IEC 68-2-14) Peak working voltage I Inp
46、ut) I Output) Puise amplitude Pulse rise time Pulse droop Puise duration Pulse decay time Pulse repetition frequency (PRF) Voltage transformation ratio(s) Impedance Source load( s) Direct current in windings (Continued on page 19) Page 10 EN 61248-5 : 1997 Pulse transformer according to IEC 1248-5 (
47、QC 260400) INSPECTION REQUIREMENTS (see notes) Blank detail speclficatlon (continued) Sheet 3 (of 5) Originators component identity number I ISSUE STATUS DATE 4.4.1 1 4.4.15 4.5.16 Performance requirements and conditions of test The appropriate pulse parameters to be measured shall be specified) SAQ
48、L I I I I I saMuaMn Safetv screen Dosition DESIGN VERIFICATION ONLY: two specimens, no failures (see 4.2 of IEC 1248-5) Design verification inspection comprises those tests listed below plus all those selected for conformance inspection. Design verification tests shall only be performed when specifi
49、cally invoked by the relevant order. 100 % 4.4.18.2 See 4.2.2 of IEC 1007 S4 1 % 4.2.1 Insulation resistance I As required (hot) Safetv screens (if a screen is specified) Pulse characteristics 100 Yo As required - 4.2 Short-term endurance As required I A test is made to confirm the presence of safety screens using the capacitance test for screens (see 4.4.18.1 of IEC 1007) 4.4.2.3 Visual insDection Dimensionina and aauaing IxQGSAm Induced voltaae test The insulation resistance shall be measured immediately after conditioning: t
