1、BRITISH STANDARD AEROSPACE SERIES Elements of electrical and optical connection - Test methods - Part 409: Contact retention in insert The European Standard EN 2591-409:1999 has the status of a British standard ICs 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGH LAW BS EN 25
2、91-4091999 _- STD=BSI BS EN 2511-405-ENGL 1779 E lh24bb7 078Lb57 705 = been prepared under the direction of the Engineering Amd. No. Date Sector Committee, was published under the authority of the Standards Commi - present to the responsible inmnationaUEhropean committee any enquiries on the intepre
3、tation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizatons represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards wh
4、ich implement internalional or European publications refed to in this document may be found in the BSI Standards Catalogue under the section entitled “Intemational Standards Correspondence Index”, or by using the Find” faciiity of the BSI Standards Electronic Catalogue. A British standard does not p
5、urport to include all the necessary provisions of a conira - load to be applied and its applcation point; - allowable displacements 1) under load. 2) after removal of load, . - final measurements and requirements (if applicable). Page 4 EN 2591 -49:1999 1 to5 6 to 60 61 to 130 2 131 4 Method 1 O0 50
6、 (with a minimum of 6 specimens) 25 (with a minimum of 31 specimens) 10 (with a minimum of 34 specimens) 4.1 See table 1. Number of contacts to be tested for each size Table 1 Number to be tested 740 Number of contacts At least one contact shall be close to the insert periphery and one near the cent
7、re. 4.2 Procedure Each contact shall be submitted to the specified axial preload. The load shall be increased at a rate not exceeding 5 N/s until the specified value is reached and maintained for 10 s. The maximum contact displacement shall be measured: - while the load is applied; - after the load
8、is removed. This test shall then be repeated in the opposite direction. 4.3 The measured values shall be within the specified limits. The specimens shall be submitted to a visual examination (EN 2591-101). No damage which would impair their operation shall be observed. Final measurements and require
9、ments (if applicable) BS EN 25911409:1999 BSI 389 Ck-wick High bad London w4 4AL BSI - British Standards Institution BSI is the independent nationai body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international leveL It is incorporated by R
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