BS 5772-9-1993 Specification for electromechanical components for electronic equipment basic testing procedures and measuring methods - Miscellaneous tests《电子设备用机电元件规范 基本试验规程和测量方法 .pdf

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1、BRITISH STANDARD BS 5772-9: 1993 IEC 512-9: 1992 Specification for Electromechanical components for electronic equipment: basic testing procedures and measuring methods Part 9: Miscellaneous testsBS5772-9:1993 This British Standard, having been prepared under the directionof the Electronic Component

2、s Standards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15 July 1993 BSI 10-1999 First published November 1979 Second edition July 1993 The following BSI references relate to the work on this standard: Committee reference ECL/21 Special announcem

3、ent in BSI News November 1992 ISBN 0 580 21860 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electronic Components Standards Policy Committee (ECL/-) to Technical Committee ECL/21, upon which the following bodies were represented: EE

4、A (the Association of Electronics, Telecommunications and Business Equipment Industries) Electronic Components Industry Federation Ministry of Defence National Supervising Inspectorate Amendments issued since publication Amd. No. Date CommentsBS5772-9:1993 BSI 10-1999 i Contents Page Committees resp

5、onsible Inside front cover National foreword ii Section 0. General 0.1 Scope 1 0.2 Normative references 1 Section 1. Cable-clamping tests 1 Test 17a: Cable clamp robustness 1 2 Test 17b: Cable clamp resistance to cable rotation 2 3 Test 17c: Cable clamp resistance to cable pull (tensile) 2 4 Test 17

6、d: Cable clamp resistance to cable torsion 3 Section 2. Explosion hazard tests 5 Test 18a: Explosion hazard deleted 3 Section 3. Chemical resistance tests 6 Test 19a: Fluid resistance of pre-insulated crimp barrels 3 7 Test 19b: Resistance to ozone deleted 4 Section 4. Fire hazard tests 8 Test 20a:

7、Flammability, needle-flame 4 9 Test 20b: Fireproofness under consideration 5 10 Test 20c: Flammability, glow-wire 5 Section 5. R.F. resistance tests 11 Test 21a: R.F. shunt resistance 6 Section 6. Capacitance tests 12 Test 22a: Capacitance 7 Section 7. Shielding and filtering tests 13 Test 23a: Scre

8、ening effectiveness under consideration 7 14 Test 23b: Suppression characteristics of integral filters 7 15 Test 23c: Crosstalk deleted 8 Section 8. Magnetic interference tests 16 Test 24a: Residual magnetism 8 17 Test 24b: Magnetic influence of a component on a compass deleted 8 Figure 1 Needle-fla

9、me test 5 Figure 2 Glow-wire and position of the thermocouple 6 List of references Inside back coverBS5772-9:1993 ii BSI 10-1999 National foreword This Part of BS 5772 has been prepared under the direction of the Electronic Components Standards Policy Committee. It is identical with IEC512-9:1992 El

10、ectromechanical components for electronic equipment; basic testing procedures and measuring methods, Part9: Miscellaneous tests, published by the International Electrotechnical Commission (IEC). This revision supersedes BS5772-9:1979, which is withdrawn. This Part of BS 5772 should be read in conjun

11、ction with BS5772-1:1985 General which contains information on fundamental test methods and procedures to be employed in implementing the requirements of this standard. IEC 512-2:1985 is related to BS5772 Basic testing procedures and measuring methods for electromechanical components for electronic

12、equipment Part2:1979 General examination, electrical continuity and contact resistance tests, insulation tests and voltage stress tests. IEC 695-2-2:1980 has been superseded by IEC695-2-2:1991, which is related to BS6458 Fire hazard testing for electrotechnical products Section2.2:1984 Needle-flame

13、test. 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 from legal obligations. Cross-references International Stan

14、dard Corresponding British Standard IEC 169-1:1965 a BS 3041 Radio-frequency connectors Part 1:1977 Specification for general requirements and measuring methods (Identical) IEC 695-2-1:1980 b BS 6458 Fire hazard testing for electrotechnical products Section 2.1:1984 Glow-wire test (Identical) CISPR

15、17:1981 BS 6299:1982 Methods of measurement of the suppression characteristics of passive radio interference filters and suppression components (Identical) a Superseded by IEC 169-1:1987 b Superseded by IEC 695-2-1:1991 Summary of pages This document comprises a front cover, an inside front cover, p

16、ages i and ii, pages1 to 8, 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 amendment table on the inside front cover.BS5772-9:1993 BSI 10-1999 1 Section 0. General 0.1 Scope The tests

17、contained in this part of International Standard, IEC512, when required by the detail specification, shall be used for electromechanical components within the scope of Technical Committee No. 48 1) . They also may be used for similar devices when specified in a detail specification. 0.2 Normative re

18、ferences The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC512. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this p

19、art of IEC512 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 169-1:1965, Radio-frequency connectors Part1: General requirements an

20、d measuring methods. IEC 512-2:1985, Electromechanical components for electronic equipment; basic testing procedures and measuring methods Part2: General examination, electrical continuity and contact resistance tests, insulation tests and voltage stress tests. IEC 695-2-1:1980, Fire hazard testing

21、Part 2: Test methods Glow-wire test and guidance. IEC 695-2-2:1980, Fire hazard testing Part 2: Test methods Needle flame test. CISPR 17:1981, Methods of measurement of the suppression characteristics of passive radio interference filters and suppression components. Section 1. Cable-clamping tests 1

22、 Test 17a: Cable clamp robustness 1.1 Object The object of this test is to detail a standard method to assess the ability of a cable-clamping device to withstand mechanical stresses likely to be encountered during normal usage. 1.2 Preparation of the specimen The specimen shall consist of the specif

23、ied cable/wire bundle fitted in the normal manner to its associated component or sub-assembly by means of the cable-clamping device. The specimen shall be prepared and mounted in accordance with the detail specification. 1.3 Test method With the specimen rigidly mounted in such an attitude that the

24、cable/wire bundle is in a horizontal position, a bending moment shall be produced by applying a specified vertical force to the cable/wire bundle at a specified distance from the cable clamp. This force shall be increased gradually at a rate not to exceed20N/s until the specified value is reached. I

25、t shall be maintained at that value for1min. The force shall then be removed and the cable returned to the horizontal attitude. The specimen is then rotated at90 increments around the horizontal axis. At each90 increment, the specified bending moment is reapplied. This test shall be repeated the num

26、ber of times stated in the detail specification. 1.4 Final measurements The specimen shall be examined visually in accordance with Test1a of IEC512-2 at the junction of the cable/wire bundle and the clamping device and at the junction of the clamping device and the component or sub-assembly. 1.5 Req

27、uirements There shall be no damage to the cable/wire bundle, nor to the specimen. The cable/wire bundle shall not be displaced permanently by more than the amount specified in the detail specification. 1.6 Details to be specified When this test is required by the detail specification, the following

28、details shall be specified: a) preparation of the specimen and type of cable/wire bundle to be used and whether contacts have to be connected; b) mounting of the specimen; c) force and torque to be applied and point of application; d) number of applications; 1) Scope of Technical Committee No. 48: T

29、o prepare International Standards regarding components having an inherent electromechanical connecting or switching function, intended for use in equipment for telecommunication and in electronic devices employing similar techniques. NOTE 1R.F. connectors will not be dealt with by this Technical Com

30、mittee as they will be covered by Technical Committee No.46, together with r.f. cables. NOTE 2Sockets for components such as crystals or electronic tubes shall be considered in co-operation with the relevant Technical Committee.BS5772-9:1993 2 BSI 10-1999 e) requirements for final measurements; f) a

31、ny deviation from the standard test method. 2 Test 17b: Cable clamp resistance to cable rotation 2.1 Object The object of this test is to detail a standard method to assess the ability of a cable-clamping device to allow rotary movement of the cable/wire bundle without damage to the external surface

32、 of the cable/wire bundle, the cable-clamping device, the component or the sub-assembly. 2.2 Preparation of the specimen The specimen shall consist of the specified cable/wire bundle fitted in the normal manner to its associated component or sub-assembly by means of the cable-clamping device. The sp

33、ecimen shall be prepared and mounted in accordance with the detail specification. 2.3 Test method The free end of the cable/wire bundle shall be deflected at an angle of45 to50 to the axis of the entry to the specimen and rotated360 . The number and the maximum speed of the rotations shall be stated

34、 in the detail specification. During the test, the cable/wire bundle shall be subjected to a torque or a pull not greater than the minimum value necessary to maintain the proper alignment of the cable/wire bundle. 2.4 Final measurements The specimen shall be examined visually in accordance with Test

35、1a of IEC512-2 at the junction of the cable/wire bundle and the clamping device and at the junction of the clamping device and the component or sub-assembly. 2.5 Requirements There shall be no damage to the cable/wire bundle external surface, nor to the specimen. 2.6 Details to be specified When thi

36、s test is required by the detail specification, the following details shall be specified: a) preparation of the specimen and type of cable/wire bundle to be used; b) mounting of the specimen; c) number and speed of rotations; d) requirements for final measurements; e) any deviation from the standard

37、 test method. 3 Test 17c: Cable clamp resistance to cable pull (tensile) 3.1 Object The object of this test is to detail a standard method to assess the ability of a cable-clamping device to prevent longitudinal movement of the cable/wire bundle. 3.2 Preparation of the specimen The specimen shall co

38、nsist of the specified cable/wire bundle fitted in the normal manner to the component or sub-assembly by means of the cable-clamping device. The specimen shall be prepared and mounted in accordance with the detail specification. The specimen shall not be wired. 3.3 Test method With the specimen rigi

39、dly mounted in such an attitude that the cable/wire bundle is in a vertical position, a specified tensile force shall be applied axially to the free end of the cable/wire bundle. This force shall be increased gradually at a rate not exceeding20N/s until the specified value is reached. The maximum va

40、lue shall be maintained for1min. 3.4 Final measurements The specimen shall be examined visually according to Test1a of IEC512-2 at the junction of the cable/wire bundle and the clamping device and at the junction of the clamping device and the component or sub-assembly. 3.5 Requirements There shall

41、be no damage such as would impair operation and the cable/wire bundle shall not be displaced by more than the amount specified in the detail specification. 3.6 Details to be specified When this test is required by the detail specification, the following details shall be specified: a) preparation of

42、the specimen and type of cable/wire bundle to be used; b) mounting of the specimen; c) force to be applied; d) requirements for final measurements; e) any deviation from the standard test method.BS5772-9:1993 BSI 10-1999 3 4 Test 17d: Cable clamp resistance to cable torsion 4.1 Object The object of

43、this test is to detail a standard method to assess the ability of a cable-clamping device to prevent the rotation of the cable/wire bundle around its axis. 4.2 Preparation of the specimen The specimen shall consist of the specified cable/wire bundle fitted in the normal manner to its associated comp

44、onent or sub-assembly by means of the cable-clamping device. The specimen shall be prepared and mounted in accordance with the detail specification. 4.3 Test method With the specimen rigidly mounted, a torque shall be applied to the cable/wire bundle at a specified distance from the cable-clamping d

45、evice. This torque shall be increased gradually at a rate not exceeding0,5Nm/s until the specified value is reached. The maximum value shall be maintained for1min. 4.4 Final measurements The specimen shall be examined visually according to Test1a of IEC512-2 at the junction of the cable/wire bundle

46、and the clamping device and at the junction of the clamping device and the component or sub-assembly. 4.5 Requirements The cable/wire bundle shall not have slipped or rotated within the clamping device nor shall the clamp have moved in relation to the component or sub-assembly body beyond the limits

47、 specified in the detail specification. 4.6 Details to be specified When this test is required by the detail specification, the following details shall be specified: a) preparation of the specimen and type of cable/wire bundle to be used; b) mounting of the specimen; c) details of the test; d) value

48、 of the torque, direction and point of application; e) requirements for final measurements; f) any deviation from the standard test method. Section 2. Explosion hazard tests 5 Test 18a: Explosion hazard Deleted. Section 3. Chemical resistance tests 6 Test 19a: Fluid resistance of pre-insulated crimp

49、 barrels 6.1 Object The object of this test is to detail a standard method to assess the ability of the insulation of pre-insulated crimp barrels to withstand specified fluids under specified conditions. 6.2 Preparation of the specimen The specimen shall consist of a crimp contact or a terminal end having a pre-insulated crimp barrel and the appropriate cable/wire and shall be prepared in accordance with the detail specification. The cable or wire, stripped as specified, shall be fitted to the crimp barrel and then crimped in the normal manner. 6.3 Visu