1、BRITISH STANDARD Tkansformers and inductors for use in electronic and telecommunication equipment Part 3. Sectional specification for power transformers on the basis of the capability approval procedure The European standard EN 612483 : 1997 has the status of a British Standard ICs 29.180 NO COPYING
2、 WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 61248-3 : 1997 IEC 612483 : 1996 BS EN 612483 : 1997 Amd.No. Date National foreword Text affected This British Standard is the English language version of EN 612483 : 1997. It is identical with IEC 612483 : 1996. The UK participation
3、 in its prepamtion was entrusted to Technical Committee EPL61, Wformers, inductors, magnetic components and ferrite materiais, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationalEuropean committee any enquiries on the interpretation, or
4、 proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK This British Standard, having been prepared under the direction of the Electrotechnicai Sector Board, was published under the authority of the Standards
5、Board and comes into effect on 15 November 1997 O BSI 1997 ISBN O 680 28433 6 A list of organizations represented on this committee can be obtained on request to its secretary. Rom 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been ren
6、umbered as IEC 6027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is dram to the fact that CEN and CENELEC Standards normally include an annex which lists normative references
7、to intedonal publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or
8、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. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover an
9、d a back cover. EUROPEAN STANDARD NORME EUROPEENNE EUROPISCHE NORM EN 61 248-3 August 1997 ICs 29.180 Descriptors: Power transformers, sectional specification, capability approval, preparation of the detail specification, inspection requirements, detail specification English version Transformers and
10、 inductors for use in electronic and telecommunication equipment Part 3: Sectional specification for power transformers on the basis of the capability approval procedure (IEC 61 248-3: 1 996) Transformateurs et inductances destins aux quipements lectroniques et de tlcommunications Einrichtungen Part
11、ie 3: Spcification intermdiaire pour les transformateurs de puissance sur la base de la procdure de Transformatoren und Drosseln fr elektronische und nachrichtentechnische Teil 3: Rahmenspetifikation fr Leistungstransformatoren mit Befhigung saner ken nu ng lagrment de savoir-faire (CE! 61 248-3: 19
12、96) (IEC 61 248-31996) 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 standard without any alteration. Up-to-date list
13、s 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 the re
14、sponsibility 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, Luxembour
15、g, 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 Stasssrt 35, 8 - 1050 Brussels
16、 * 1997 CENELEC - All rights of exploitation in any form and by any means resewed worldwide for CENELEC members. Ref. NO. EN 61248-3:1997 E Page 2 EN 61248-3 : 1997 Foreword The text of the International Standard IEC 61 248-3:1996, prepared by IEC TC 5 1, Magnetic components and ferrite materials, w
17、as submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 61 248-3 on 1997-07-01 without any modification. 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
18、(dop) 1 998-06-0 1 - 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 this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text
19、 of the International Standard IEC 61 248-3:1996 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61248-3 : 1997 CONTENTS Clause Pagas .1 2 3 4 5 Scope . . . . . a . Normative references Preparation of the detail specification . 3.1 General 3.2 Ratings and character
20、istics . 3.3 Outline drawings and winding schematic diagram Inspection requirements to be listed in the detail specification . 4.1 Conformance inspection . - 4.2 Design verification . Detail specification . -. 4 4 5 6 6 6 7 7 7 7 Blank detail specfication 8 * * rn Annex ZA (normative) Normative refe
21、rences to international publications with their corresponding European publications 13 BSI 1997 STD-BSI BS EN bL248-3-ENGL L797 Lb24bb7 Ob587b5 b77 M Page 4 EN 61248-3 : 1997 TRANSFORMERS AND INDUCTORS FOR USE IN ELECTRONIC AND TELECOMMUNICATION EQUIPMENT - Part 3: Sectional specification for power
22、transformers on the basis of the capability approval procedure 1 Scope This part of IEC 1248 specifies how to prepare detail specifications for power transformers to be released under the terms of IEC 1248-1 (QC 260000) capability approval. It includes a blank detail specification (BDS), which shows
23、 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 specification writer. It also lists appropriate ratings and characteristics. The components co
24、vered by this pari of IEC 1248 are essentially concerned with maximum transfer of power at single frequency with an essentially symmetrical waveform. 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provisions of this part
25、 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 normative documents listed
26、below. Members of IEC and IS0 maintain registers of currently valid international standards. IEC Guide 102: 1989, Electronic components - Specification structures for quality assess- ment (Qualification approval and capability approval) IEC QC 001001: 1986, Basic rules of the IEC Quality Assessment
27、System for Electronic Components (IECQ) Amendment 2 (1994) IEC QC 001002: 1986, Rules of procedure of the Electronic Components (IECQ) Amendment 2 (1994) IECS QC 001004: Specifications list IEC QC 001005: Register of firms, products and System, including IS0 9000 IEC 68-2: Environmental testing - Pa
28、rt 2: Tests IEC Quality Assessment System for services approved under the IECQ IEC 68-2-6: 1982, Environmental testing - Patt 2: Tests - Test Fc and guidance: Vibration (sinusoidal) Page 5 EN 61248-3 : 1997 IEC 68-2-1 4: 1984, Environmental testing - Part 2: Tests - Test N: Change of temperature Ame
29、ndment 1 (1986) IEC 68-2-20: 1979, .Environmental testing - Part 2: Tests - Test 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 68-2-27: 1987, Env
30、ironmental testing - Part 2: Tests - Test 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 electronic and telec
31、ommunication equipment - Measuring methods and test procedures IEC 1248-1 : 1996, Transformers and inductors for use in electronic and telecommunication equipment - Part i: Generic specification IS0 128: 1982, Technical drawings - General principles of presentation IS0 129: 1985, Technical drawings
32、- Dimensioning - General principles, definitions, methods of execution and special indications - 3 This standard is intended to be used for the preparation of detail specifications for power transformers released under the terms of the IEC 1248-1 (OC 260000) capability approval procedure. Preparatio
33、n of the detail specification E * cn * It is intended for use by the following originators: a) a customer wishing to procure power transformers that are within the scope of the approved capability of his supplying component manufacturer, for example for detail specifications (DS); b) a capability-ap
34、proved manufacturer of power transformers wishing to prepare specifications for his own products which are within the scope of his capability approval. NOTES 1 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
35、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 ynderlined concern operating characteristics of fundamental importance, and it is strongly recommended that these are selected by the s
36、pecification writer for inclusion in the detail specification. The tests shown in plain type are listed for the convenience of the specification writer, and tests should be selected from them according to the particular application of the component. 3 The specification writer may specify tests and s
37、ampling levels different from, less than, or additional to those given in the BOS. STD-BSI BS EN bL248-3-ENGL 1777 W Lb24hb7 Ob587b7 44T Page 6 EN 61248-3 : 1997 3.1 General 3.1.1 these shall be fully specified in the detail specification. Where additional tests of a type not defined or invoked in I
38、EC 1007 are required, 3.1.2 by the addition of the notation “(D)“. Any tests considered as being destructive shall be so denoted in the test schedule NOTE - The use of this notation is not illustrated in the BDS. 3.1.3 Tests shall be grouped in the schedule according to the level of sampling require
39、d and, unless otherwise indicated (see 4.1 b), in the order of testing required. Where 100 % testing is not required, inspection levels and acceptable quality levels shall be selected from IEC 410. 3.1.4 The completed detail specification shall be allocated a component identity number and issue stat
40、us by the originator. NOTES 1 This number is chosen by the originator (manufacturer or customer) within his own system. It is thus not subject to any external rules or codification. 2 In the special case of a manufacturers detail specification for a standard catalogue item which the manufacturer wis
41、hes to be listed in IEC QC 001004, the mational committee will allocate an appropriate number from its register. 3.1.5 A number allocated by the component manufacturer shall be additionally included in the derail specification, comprising this specification number, his factory identification code le
42、tters, and a unique number within his registration system, for example QC 260200/PQR/1234. NOTE - After a detail specification has been allocated the manufacturers reference number in accordance with 3.1.5, it is to be considered a contractual pari of the order. Copies of ali such detail specifi- ca
43、tions are to be retained by the manufacturers chief inspector. 3.2 Ratings and characteristics 3 2.1 Ratings In the case of customer-originated detail specifications, customer and manufacturer agreement shall be obtained on the ratings to be ascribed to the component in the detail specification. The
44、se ratings shall not exceed the scope of the manufacturers capability approval (see also 1.12 of IEC 1248-1). 3.2.2 Characteris tics A customer shall prescribe in the detail specification any characteristic required for a component . 3.3 3.3.1 The detail specification shall incorporate a drawing of
45、the transformer showing important features, such as those dimensions affecting interchangeability, restrictions on mounting, and marking requirements. Outline drawings and winding schematic diagram I * * v, Page 7 EN 61248-3 1997 3.3.2 The detail specification shall incorporate a schematic diagram s
46、howing all windings, screens, taps and phasings, and giving termination identification. 3.3.3 current, full details of this circuit shall be given, together with I load and component values. Where the transformer is intended to be connected to a circuit supplying direct 4 Inspection requirements to
47、be listed in the detail specification 4.1 Conformance inspection The detail specification shall incorporate the following notes: a) sampling inspections shall be carried out in accordance with iEC 410, normal inspection; b) tests in a group may be carried out in any order, except where otherwise ind
48、icated (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) the values given for measurement limits are absolute values: measurement uncer- tainty is to be taken into account. 4.2 Design verification The tests to
49、be detailed under this heading are those which the specification writer con- siders to be inappropriate to lot-by-lot release, but appropriate to the verification 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 failures shall be stated in the detail specification. NOTE - Two specimens should normally be provided, unless ot
