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1、BRITISH STANDARD BS 9121:1988 Incorporating Amendment No. 1 Blank detail specification for Radio interference suppression filters of assessed quality basic and full assessment levels Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncont
2、rolled Copy, (c) BSI BS 9121:1988 BSI 03-2000 ISBN 0 580 35837 2 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
3、from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 14, 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 ame
4、ndment table on the inside front cover. Amendments issued since publication Amd. No.Date of issueComments 7548June 1993Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 91
5、21:1988 BSI 03-2000i Contents Page 1Scope1 2Additional test requirements1 3Detail specification1 Table 1 Group A Inspection4 Table 2 Group B Inspection5 Table 3 Group C Assessment6 Table 4 Group D Inspection9 Publications referred toInside back cover Licensed Copy: London South Bank University, Lond
6、on South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 BSI 03-20001 1 Scope This standard lists the rating
7、s, characteristics, inspection requirements and additional information for radio interference suppression filters of the stated assessment level which are to be included as minimum mandatory requirements in the detail specification, together with supplementary tests which may be called up at the dis
8、cretion of the specification writer to meet particular circumstances. It is a blank detail specification for radio interference suppression filters relating to BS 9120:1988 “Specification for radio interference suppression filters of assessed quality: generic data and methods of test”, in the BS 900
9、0 series. 2 Additional test requirements Detail specifications written in compliance with this blank detail specification shall not specify requirements inferior to those of the generic specification. However the specification writer may include greater severities and/or extra test requirements. In
10、either case the additional requirements shall be indicated in the assessment level by, for example “FULL plus additional requirements”. 3 Detail specification The blank detail specification which follows, when completed as indicated, will form the detail specification. Key The numbers between square
11、 brackets correspond to the following indications which should be given: Identification of the detail specification (DS) 1 Name and address of the British Standards Institution. 2 The number allocated by BSI Milton Keynes. 3 The manufacturer may add his name and address. 4 The number and date of the
12、 generic specification. Identification of the filter 5 A short description of the type of filter. 6 Information on typical construction (where applicable). 7 Outline drawing with main dimensions which are of importance for interchangeability and/or reference to the relevant documents for outlines. A
13、lternatively, this drawing may be given in an appendix to the detail specification. 8 Application or group of applications covered, or, preferably, the level of quality assessment covered by the detail specification. 9 Reference data on the most important properties, to allow comparison between the
14、various filter types. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 2 BSI 03-2000 BRITISH STANDARDS INSTITUTION12 2 PARK STREET LONDON W1A 2BSBS 9121 000X Specification available from:3 ISSUEDATE
15、 AS SHOWN IN PD 9002 AND ELECTRONIC COMPONENTS OF ASSESSED 4 MANUFACTURERS TYPE5 QUALITY DETAIL SPECIFICATION INNUMBER ACCORDANCE WITH BS 9120:1988 SEE PD 9002 For ordering information see clause 6 Outline and dimensions. Third angle projection 7 DESCRIPTION 6 (Where necessary the dimensions may be
16、given in an appendix to the detail specification) All dimensions are in millimetres ASSESSMENT LEVEL 8 9 Refer to Qualified Products List PD 9002 for details of manufacturers approved to this specification. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:1
17、2 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 BSI 03-20003 1 Specific methods of mounting for vibration shock and bump testing 2 Ratings and characteristics Rated voltage(s) or rated voltage range. Rated frequency or rated frequency range. Rated current. Class of insulation. Insertion lo
18、ss at stated frequency or range of frequencies in decibels. Rated temperature. Sealed/unsealed. Climatic category. NOTEInformation on the above characteristics may be given in Tabular form if necessary. 3 Other characteristics This section may be used for defining characteristics which are additiona
19、l to or tighter than those given in the generic specification. 4 Related documents Generic specification BS 9120:1988. 5 Marking The following details selected from those listed in 1.1.6 of BS 9120:1988 shall be marked on the filter. 6 Ordering information Quantity of filters BS 9000 specification n
20、umber, issue number and date. The style or variant. Manufacturers reference number. Other information to identify a specific rating, size, constructional or other variant etc., as necessary. An example of ordering information shall be given. 7 Qualification approval and quality conformance inspectio
21、n For qualification approval testing and quality conformance inspection, the test schedule severities and requirements given in the generic specification shall apply. In addition, Table 1 to Table 4 specify test severities and requirements to be included in the detail specification. NOTEAdditional t
22、ests, and additional or more severe requirements may also be specified in these tables. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 4 BSI 03-2000 Table 1 Group A Inspection (for notes see page
23、14) Clause number and test (see note 1) D or ND (2) Conditions of test (See note 2) Performance requirement Basic assessment Full assessment ILAQL %ILAQL % Group A Subgroup A0 1.2.3 Visual examination 1.2.5.2 Electrical continuity 1.2.5.1 Voltage proof ND To be applied on a sampling basis: lot by lo
24、t If applicable, the d.c. resistance shall be recorded All filters shall be tested between line terminals; mains filters shall also be tested between lines and earth. The test points, test voltage, method, duration, maximum charging and discharging currents and, if applicable, the maximum value of t
25、he time constant shall be specified in the detail specification 100 % inspection 100 % inspection As 1.2.3. As 1.2.5.2. There shall be no breakdown or flashover. Subgroup A4 1.2.5.11 Insertion loss (no load) (see note 6) 1.2.7.10 Sealing (if applicable) ND Method to be in accordance with BS 6299. Th
26、e conditions shall be specified in the detail specification Procedure Qc, Qd or Qk to be specified in the detail specification Not applicable II4.0 Shall be within the limits specified in the detail specification. Appropriate requirements to be specified in the detail specification. Licensed Copy: L
27、ondon South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 BSI 03-20005 Table 2 Group B Inspection (for notes see page 14) Clause number and test (see note 1) D or ND (2) Conditions of test (See note 2) Performance requireme
28、nt Basic assessment Full assessment ILAQL %ILAQL % Group B Subgroup B1 1.2.4 a) Dimensions (outline) 1.2.6.2 Connector engaging and separating force (if applicable) ND To be applied on a sampling basis: lot by lot Engaging and separating forces shall be measured, and if applicable, details of specia
29、l tools shall be stated S31.5II1.0 Shall be within the limits given on page 1 or in the appendix, as appropriate. Shall be within the limits specified in the detail specification. Subgroup B2 1.2.7.3.1 Solderability (if applicable) ND Method to be stated S32.5S32.5 Subgroup B4 1.2.5.3 Insulation res
30、istance 1.2.5.11 Insertion loss (no load) ND Method to be in accordance with BS 6299. The conditions shall be specified in the detail specification S34.0II1.5 Shall be within the limits specified in the detail specification. Shall be within the limits specified in the detail specification. Subgroup
31、B8CTR information (full assessment only). If required by the detail specification the results of B1, B2 and B4 tests shall be reported as attributes information. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
32、BS 9121:1988 6 BSI 03-2000 Table 3 Group C Assessment (applicable to full assessment only); (for notes see page 14) Clause number and test (see note 1) D or ND (2) Conditions of test pnc Performance requirements (see note 2) Group C Subgroup C2 1.2.4 d) Connector engaging (if applicable) 1.2.5.10 Co
33、nnector contact resistance (if applicable) 1.2.5.4 Leakage current (if applicable) ND Applicable to full assessment only. To be conducted on a sampling basis at the periodicity given in months in column p Compatibility requirements shall be stated in full in the detail specification. Details of nece
34、ssary gauges, number of measuring cycles and maximum value of current shall be prescribed in the detail specification As stated in BS 9120 Appendix C as appropriate 3121 (note 4) (note 5)Shall be within the limits specified in the detail specification. Shall be within the limits specified in the det
35、ail specification. As in BS 9120 Appendix C Subgroup C4a Initial measurements 1.2.5.11 Insertion loss (no load) 1.2.7.2 Robustness of terminations (if applicable) 1.2.7.3.2 Resistance to soldering heat DPart of the sample As stated in subgroup B4 Test Ua, Ub, Uc, Ud as applicable The appropriate met
36、hod shall be specified in the detail specification 361 (note 4) Shall be within the limits specified in the detail specification. As 1.2.7.2. As 1.2.7.3.2. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 912
37、1:1988 BSI 03-20007 Table 3 Group C Assessment (applicable to full assessment only); (for notes see page 14) Clause number and test (see note 1) D or ND (2) Conditions of test pnc Performance requirements (see note 2) Subgroup C4b 1.2.5.11 Insertion loss (no load) 1.2.7.9 Rapid change of temperature
38、 1.2.7.5 Bump or 1.2.7.6 Shock 1.2.7.7 Vibration DRemainder of the sample Method to be in accordance with BS 6299. The conditions shall be specified in the detail specification Temperature extremes, duration of exposure and number of cycles shall be specified in the detail specification The severity
39、 to be stated in the detail specification The severity to be stated in the detail specification The severity to be stated in the detail specification 3121 (note 4) Shall be within the limits specified in the detail specification. As 1.2.7.9. As 1.2.7.5. As 1.2.7.6. As 1.2.6.6. Subgroup C4 1.2.7.10 S
40、ealing (if applicable) 1.2.7.14 Climatic sequence 1.2.7.14.1 Initial measurements As specified in the detail specification 1.2.7.14.2 Dry heat 1.2.7.14.3 Damp heat, cyclic (first cycle) DWhole of the sample Procedure (Qc, Qd, Qf, or Qk) to be specified in the detail specification Test Ba. Temperatur
41、e to be specified Test Db (one cycle) Not for /04. Temperature to be specified 3181 (note 4) (note 5) Shall meet the requirements of the detail specification Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9
42、121:1988 8 BSI 03-2000 Table 3 Group C Assessment (applicable to full assessment only); (for notes see page 14) Clause number and test (see note 1) D or ND (2) Conditions of test pnc Performance requirements (see note 2) 1.2.7.14.4 Cold 1.2.7.14.5 Low air pressure (if applicable) 1.2.7.14.6 Damp hea
43、t, cyclic (remaining cycles) Test Aa. Temperature to be specified Test M Temperature, severity and duration to be specified Test Db Temperature to be specified Final measurements 1.2.3 Visual examination 1.2.5.1 Voltage proof 1.2.5.11 Insertion loss (no load) 1.2.5.8 Voltage drop at rated current (i
44、f applicable) 1.2.5.2 Electrical continuity As stated in subgroup A0 As stated in subgroup B4 There shall be no visible damage. Shall be within the limits specified in the detail specification. Shall be within the limits specified in the detail specification. Shall be within the limits specified in
45、the detail specification. Shall be within the limits specified in the detail specification. Subgroup C5 1.2.5.5 Endurance D The detail specification shall specify the appropriate procedures to comply with 1.2.5.5 3121 (note 4) (note 5) Shall meet the requirements of the appropriate Section of BS 907
46、0 or BS 9120 Appendix D. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:27:12 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9121:1988 BSI 03-20009 Table 3 Group C Assessment (applicable to full assessment only); (for notes see page 14) Table 4 Group D Inspec
47、tion (for notes see page 14) Clause number and test (see note 1) D or ND (2) Conditions of test pnc Performance requirement (see note 2) Subgroup C6CTR information (full assessment only) if required by the detail specification. Values of insertion loss at the conclusion of the climatic sequence in C
48、4 and of C5 shall be presented as variables information. The results of the remaining tests shall be presented as attributes information. Clause number and test (see note 1) D or ND (2) Conditions of test Assessment level pnc Performance requirements (see note 2)(see note 2) GROUP D Subgroup D1 1.2.
49、7.2 Robustness of terminations (if applicable) 1.2.7.3.2 Resistance to soldering heat 1.2.7.11 Damp heat steady state Final measurements 1.2.5.1 Voltage proof 1.2.5.3 Insulation resistance D To be conducted on a sampling basis at the periodicity given in months in column p Method to be prescribed in the detail specification Test Ca at the severity prescribed in the detail specification for the climatic category. Electrical loading, if required, shall be specified in the detail specification Within 30 min of rec