BS-9925-03.0-1988 IEC-60723-4-1987 QC-250300-1987.pdf
《BS-9925-03.0-1988 IEC-60723-4-1987 QC-250300-1987.pdf》由会员分享,可在线阅读,更多相关《BS-9925-03.0-1988 IEC-60723-4-1987 QC-250300-1987.pdf(14页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS 9925-03.0: 1988 IEC 723-4: 1987 QC 250300: 1987 Harmonized system of quality assessment for electronic components Inductor and transformer cores for telecommunications Part 03.0: Sectional specification: Magnetic oxide cores for transformers and chokes for power applications IEC
2、title: Inductor and transformer cores for telecommunications Part 4: Sectional specification: Magnetic oxide cores for transformers and chokes for power applications UDC 621.3.042.1:621.318.435 + 621.314.222.6:621.39 Licensed Copy: London South Bank University, London South Bank University, Fri Dec
3、08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9925-03.0:1988 This British Standard, having been prepared under the direction of the Electronic Components Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 May 1988 BSI 02-2000 The follow
4、ing BSI references relate to the work on this standard: Committee reference ECL/20 Draft for comment 83/29432 DC ISBN 0 580 16464 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Components Standards Committee (ECL/-) to Tech
5、nical Committee ECL/20, upon which the following bodies were represented: Electronic Components Industry Federation Electronic Engineering Association Ministry of Defence National Supervising Inspectorate Telecommunication Engineering and Manufacturing Association (TEMA) Amendments issued since publ
6、ication Amd. No.Date of issueComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9925-03.0:1988 BSI 02-2000i Contents Page Committees responsibleInside front cover National forewordii Section 1. Scope S
7、ection 2. General 2.1Related documents1 2.2Classification1 Section 3. Quality assessment procedures 3.1Formation of inspection lots and test methods2 3.2Inspection for qualification approval2 3.3Fixed sample size qualification approval test schedule2 3.4Quality conformance inspection3 Section 4. Add
8、itional information Section 5. Blank detail specification 5.1Identification of the specification4 5.2Identification of the core4 5.3Limiting conditions (not for inspection purposes)4 5.4Marking4 5.5Ordering information5 5.6Related documents5 5.7Additional specifications or test details5 5.8Certified
9、 test records (CTRs)5 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9925-03.0:1988 ii BSI 02-2000 National foreword This Part of BS 9925 has been prepared under th
10、e direction of the Electronic Components Standards Committee. It is identical with IEC Publication 723-4 (QC 250300) “Inductor and transformer cores for telecommunications. Part 4: Sectional specification: Magnetic oxide cores for transformers and chokes for power applications”, published in 1987 by
11、 the International Electrotechnical Commission (IEC). This standard is a harmonized specification within the IECQ system of quality assessment for electronic components, the basic rules of which are given, in the UK, in BS 9000-3:1987. Terminology and conventions. The text of the International Stand
12、ard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in British Standards. Cross-references International StandardCorresponding British Standard BS 2011 Basic environmental testing proced
13、ures IEC 68-1:1982Part 1.1:1983 General and guidance (Identical) IEC 68-2-1:1974Part 2.1A:1977 Tests A. Cold (Identical) IEC 68-2-2:1974Part 2.1B:1977 Tests B. Dry heat (Identical) IEC 133:1985BS 4061:1966 Specification for dimensions of pot cores made of ferromagnetic oxides for use in telecommunic
14、ation and allied electronic equipment (Technically equivalent) IEC 205:1966 plus supplements 205A:1968 and 205B:1974 BS 6454:1983 Method for calculation of the effective parameters of magnetic piece parts (Identical) BS 5938 Cores for inductors and transformers for telecommunications IEC 367-1:1982P
15、art 1:1984 Methods of measurement (Identical) IEC 367-2:1974 plus supplement 367-2A:1976 Part 2:1980 Guide to the drafting of performance specifications (Identical) IEC 424:1973BS 6786:1986 Guide to the specification of limits for physical imperfections of parts made from magnetic oxides (Identical)
16、 IEC 431:1983BS 6555:1984 Specification for dimensions of square cores (RM-cores) made of magnetic oxides and associated parts (Identical) BS 9925 Harmonized system of quality assessment for electronic components. Inductor and transformer cores for telecommunications IEC 723-1:1982 (QC 250000) Part
17、0:1984 Generic specification (Identical) IEC 723-4-1:1987a (QC 250301) Part 03.01:1988 Blank detail specification: Magnetic oxide cores for transformers and chokes for power applications. Assessment level A (Identical) a Dated in error as 1986 in 2.1 of this standard. Licensed Copy: London South Ban
18、k University, London South Bank University, Fri Dec 08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9925-03.0:1988 BSI 02-2000iii There are no corresponding British Standards for IEC Publications 226, 525 and 647, which are referred to in the text. The Technical Committee has reviewed the
19、provisions of this IEC Publications and has decided that they are acceptable for use in conjunction with this standard. 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
20、 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, pages i to iv, pages 1 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amend
21、ments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: London South Bank University, London South Ba
22、nk University, Fri Dec 08 02:06:21 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9925-03.0:1988 BSI 02-20001 Section 1. Scope This sectional specification lists the characteristics, ratings and also the inspection requirements for magnetic oxide cores of assessed quality for transformers and chokes
23、for power applications intended for professional and industrial applications, excluding broad-band and tuned transformers and mains frequency power transformers. It selects from the generic specification, IEC Publication 723-1, and from the basic specification, IEC Publication 367-1, the appropriate
24、 methods of test to be used in detail specifications derived from this specification, in accordance with the corresponding blank detail specification. Section 2. General 2.1 Related documents 2.2 Classification A core is classified by: a) shape: e.g. E core, EC core, RM core. NOTEU cores are also us
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS-9925-03.0-1988 IEC-60723-4-1987 QC-250300-1987 BS 9925 03.0 1988 IEC 60723 1987 QC 250300
链接地址:https://www.31doc.com/p-3736815.html