1、 .- - CEN:PREN*3475 (PART*703) 92 m 3404589 0033507 b2T W Edition approved for publication 1992-08-31 A. E. C. M. A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 3475 Part 703 Issue P 1 August 1992 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEPOSPATIAL Technopolis - 175 rue
2、 Jean-Jacques Rousseaii - F-92138 Issy-ies-Mouineabx Ceaex - Tel 5 I J7 36 38 76 Comments should be sent within six months C2 Chairman after the date of publication decision AECMA Teclinopolts - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moui:neaux Cedex - FRANCE M. J. LE CUNFF I UDC : Key words
3、 ENGLISH VERSION Aerospace series Cables, electrical, aircraft use Test methods Part 703 - Permanence of manufacturers marking Srie arospatiale Luft- und Raumfahrt Cbles lectriques Elektrischen Leitungen Mthodes dessais Prfverf a hren usage aronautique Partie 703 - Tenue du marquage fabricant fr Luf
4、tfahrt Verwendung Teil 703 - Haltbarkeit der Herstellerkennzeichnung This .Aerospace Series. pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been te
5、chnically approved b y the experts of the concerned Commission following comment by the Member countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identifica
6、tion of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the OfficialServices of the Member countries it willbe submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. Copyright Associatio
7、n Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-CEN PRENr3LI75 (PART*703) 72 W 3404587 0033508 5bb prEN 3475-703 Page 3 1 Scope and field of application This standard specif
8、ies a method of testing the permanence of the manufacturers marking on finished cables. It shall be used together with EN 3475-100. 2 References EN 3475-100 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100 - General 1) 3 Preparation of specimens The specimens approximate
9、ly 0,75 m long shall be taken from a finished cable and subject to a scrape abrasion test by a needle. The test shall be performed at ambient temperature. 4 Apparatus The apparatus (see figure 1) shall consist of a device designed to wear the surface of the identification mark upon the insulation or
10、 jacket, over a length equal to the travel (10 f 1) mm at a frequency of (55 f 5) cycles/min. Mass -? .Travel (1021) mm _ Mechanism Electrical insulation Needle holder Counter mass I Anvil (low thermal mass) Cable . on test I Figure 1 - General arrangement 1) Published as AECMA pre-standard at the d
11、ate of publication of the present standard. Previous page is blank Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-prEN 3475-703 Page 4 5 Method A specim
12、en shall be fixed on the abrasion test device with the marking on the upper surface. The load on the abrading needle shall be 1,5 N. The diameter of the needle shall be (0,50 * 0,Ol) mm. Each specimen shall be subjected to 125 cycles. 6 Requirements Upon completion, the specimen shall be subjected t
13、o a visual inspection. A continuous line shall not be scored through .the printing which shall remain legible. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-
