1、BRITISH STANDARD C ornrnunication cables Specifications for test methods Part 3-12: Mechanical test methods - Shot gun damage The European Standard EN 50289-3-12:2001 has the status of a British Standard ICs 29.060.20; 3 1.120 BS EN 50289-3- 121200 1 present to the responsible European committee any
2、 enquiries on the interpretation, 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 organizations represented on this subcommittee can be obtained on request to its secretary. Cross-referenc
3、es 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 by using the “Find” facility of the BSI Standards Electronic Catalogu
4、e. A British Standard does not purport to include all the necessary provisions of a contract. Users ofBritish Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprise
5、s a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 30 November 2001 ISBN O 580 38750X EUROPEAN STANDARD NORME EUROPENNE EUROPflSCHE NORM EN 50289-3-1 2 August 2
6、001 ICs 33.120.10 English version Communication cables - Specifications for test methods Part 3-1 2: Mechanical test methods - Shot gun damage C, b I es de communication - Spcifications des mthodes dessai Partie 3-1 2: Mthodes dessais mcaniques - Dommages par les coups de fusil Kommunikationskabel -
7、 Spezifikationen far Prfverfahren Teil 3-12: Mechanische PrJfverahren - Besch%dig u ng durch Schrotkugel beschuss This European Standard was approved by CENELEC on 2001-05-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this
8、European Standard the status of a national standard without any alteration. Up-to-date lists 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
9、(English, French, German). A version in any other language made by translation under the responsibility 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 Aust
10、ria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique
11、Europo/o NOTE 1 The type of gun is likely to vary from country to country. b) a frame for holding the cable sample. It is important that the sample is free to move and the test set-up should also take into account that the shot may scatter in an elliptical manner depending on the gun used; - size 4
12、or 7 or as specified in the Detail Specification ; c) gun shot : NOTE 2 installation. The shot size is likely to vary from country to country, and should represent the hazard particular to the - the shot type shall be specified in the Detail Specification ; NOTE 3 Typically lead or steel is used, de
13、pending on the country. Lead shot deforms on impact and is less damaging than steel shot. - the cartridge type shall be specified in the Detail Specification. ) At draft stage. 4.3 Procedure 5- EN 50289-3-12:2001 The cable sample shall be mounted on the frame and shot at from the distance specified
14、in the Detail Specification. A typical distance is 20 m. The number of shots with visible impact should be low, typically three or less, in order to give a reproducible test. If more than three shots hit the cable, then the test may be repeated if any of the requirements are not met. 4.4 Details to
15、be specified The detail specification shall include : a) gun type, b) shot size, c) shot type, d) cartridge type, e) distance between gun and sample. 5 Requirements The acceptance criteria for the test shall be stated in the relevant Detail Specification. Typical failure modes include damage to the
16、cable core elements and cable sheath (e.9. piercing of loose tubes) and loss of continuity. 6 Test report The test report shall include: tem perature; sample length; details of test configuration, including cable orientation; report of damage inflicted, including fibre and conductor continuity; repo
17、rt of damages on sheath and screens; number of tests carried out, to achieve minimum visible impacts; pass/fai I criteria. BS EN 50289-3- 121200 1 B SI 389 Chiswick High Road London W4 4AL BSI is the independent national body responsible for preparing British Standards. It presents the UKview on sta
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