1、ASD STANDARD NORME ASD ASD NORM prEN 3745-411 Edition P 1 September 2006 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.org ICS: 49.060 Descriptors: ENGLISH VERSION
2、 Aerospace series Fibres and cables, optical, aircraft use Test methods Part 411: Resistance to fluids Srie arospatiale Fibres et cbles optiques usage aronautique Mthodes dessais Partie 411 : Rsistance aux fluides Luft- und Raumfahrt Faseroptische Leitungen fr Luftfahrzeuge Prfverfahren Teil 411: Be
3、stndigkeit gegen Flssigkeiten This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved
4、by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination a
5、nd review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by
6、 giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 30 September 2006 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2006 by ASD-STAN prEN
7、 3745-411:20062 Contents Page Foreword . 2 1 Scope 3 2 Normative references 3 3 Test procedures 3 4 Preparation of specimen 4 5 Methods 4 6 Requirements 4 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in
8、accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 3745-411:2006 3 1 Scope This standard specifies methods of measuring the fluid resistance of a finished cable. It shall be used together with EN 3745-100, EN 3
9、909 and TR 4542. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3745-1
10、00, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 100: General. 1) EN 3745-201, Aerospace series Fibres and cables, optical, aircraft use Test methods Part 201: Visual examination. EN 3745-503, Aerospace series Fibres and cables, optical, aircraft use Test methods Part
11、503: Scrape abrasion. EN 3909, Aerospace series Test fluids for electric components and sub-assemblies. 2) TR 4542, Aerospace series Guidance for fluid tests. 3) 3 Test procedures Two test procedures are proposed, depending of the need. Test method 1: occasional contamination Aim: to offer a test me
12、thod to appreciate the behaviour of the insulation in case of occasional contamination. See EN 3909. Test method 2: extended contamination Aim: to measure the fluid resistance and to be applied for qualification of a product standard. See EN 3909 (and associated TR 4542). Unless otherwise specified
13、in the product standard, all fluids mentioned in EN 3909 are mandatory. 1) In preparation at the date of publication of this standard.2) Published as ASD Prestandard at the date of publication of this standard. 3) Published as ASD Technical Report at the date of publication of this standard.prEN 374
14、5-411:20064 4 Preparation of specimen For each fluid to be tested, take a clean specimen at least 1 m in length from a finished cable. If necessary an initial cleaning may be performed according to EN 3909. Unless otherwise stated in the product standard, each specimen shall be wound seven complete
15、turns onto a mandrel of diameter 12 times the maximum outer diameter of the specimen without torsion, but with sufficient tension to ensure the specimen remains fully in contact with the mandrel. Remove the mandrel. 5 Methods With each so prepared specimen apply the procedure described in: EN 3909 f
16、or method 1 or; EN 3909 for method 2. Only the coiled part shall be contaminated. 6 Requirements After being returned to ambient temperature and without final cleaning, examine the test sample visually, according to EN 3745-201 and record any change of condition from the initial examination. Straighten or uncoil the coiled part of the cable. The contaminated specimen shall pass: the scrape abrasion test, according to EN 3745-503 as defined in the product standard for ambient temperature.
