ASD-STAN PREN 3475-701-2016 Aerospace series Cables electrical aircraft use Test methods Part 701 Strippability and adherence of insulation to the conductor (Edition P 2).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3475-701 Edition P 2 May 2016 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: 49.060 Supersedes edition P 1

2、of August 1992 and will supersede EN 3475-701:2002 Descriptors: ENGLISH VERSION Aerospace series Cables, electrical, aircraft use Test methods Part 701: Strippability and adherence of insulation to the conductor Luft- und Raumfahrt Elektrische Leitungen fr Luftfahrtverwendung Prfverfahren Teil 701:

3、Abisolierbarkeit und Haftfestigkeit der Isolierung auf dem Leiter Srie arospatiale Cbles lectriques usage aronautique Mthodes dessais Partie 701 : Dnudabilit et adhrence de lisolation sur le conducteur This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The Ae

4、roSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technic

5、al content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European C

6、ommittee 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 giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. ASD-STAN Tec

7、hnical Committee approves that: “This document is published by ASD-STAN for the needs of the European Aerospace Industry. The use of this standard is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefrom, is the sole res

8、ponsibility of the user.” ASD-STAN reviews each standard and technical report at least every five years at which time it may be revised, reaffirmed, stabilized or cancelled. ASD-STAN invites you to send your written comments or any suggestions that may arise. All rights reserved. No parts of this pu

9、blication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of ASD-STAN. Order details: E-mail: salesasd-stan.org Web address: http:/www.asd-stan.org/ Edition ap

10、proved for publication 1st May 2016 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2016 ASD-STAN prEN 3475-701:2016 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of specimens 3 4 Methods 4 5 Requiremen

11、ts . 4 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 3475-70

12、1:2016 (E) 3 1 Scope This standard specifies methods of measuring the strippability and adherence of the insulation to a conductor of a finished cable. When a particular method is not specified in the detail product specification, method A shall be used. Method B is recommended for wires insulated w

13、ith materials showing a Low adhesion to the conductor due to the poor repeatability of the test Method A with this type of wires. It shall be used together with EN 3475-100. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indis

14、pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2812, Aerospace series Stripping of electric cables EN 3475-100, Aerospace series Cables, electrical, aircr

15、aft use Test methods Part 100: General 3 Preparation of specimens 3.1 General Measurement shall be done on samples directly out of a reel or out of a coil with a minimum of deformation. 3.2 Insulation stripping properties Stripping shall be carried out without difficulty over 5 mm for cables with se

16、ctions up to 5 mm2 and over 8 mm for cables with a section greater than 5 mm2 at the two ends of each specimen using the stripping tools in accordance with EN 2812. The manufacturer shall state in the test report which tools have been used. 3.3 Adherence of insulation to the conductor 3.3.1 Method A

17、 The adherence of the insulation shall be adequate when tests are carried out on the specimens prepared according to Figure 1. The insulation shall be cut around the whole periphery of each specimen 5 mm and 30 mm from one end (for sizes up to 5 mm2). The insulation shall then be stripped from both

18、ends to leave a length of insulation on the conductor. Figure 1 prEN 3475-701:2016 (E) 4 3.3.2 Method B The adherence of the insulation shall be adequate when tests are carried out on the specimens prepared according to Figure 2. The insulation shall be cut around the whole periphery of each specime

19、n 5 mm and 55 mm from one end. The insulation shall then be stripped from both ends to leave a length of insulation on the conductor. Figure 2 4 Methods 4.1 Method for stripping capability of the jacket (screened cables) The stripping capability is characterised by the time required to strip a 80 mm

20、 length of the jacket. A suitable tool shall be used. 4.2 Methods for adherence of the insulation 4.2.1 Method A Pass the conductor through a calibrated hole (conductor diameter 0,05 mm) and subject it to an increasing tensile force F until it slides inside the insulating cover. The tensile speed sh

21、all be (100 10) mm/min. 4.2.2 Method B 3 measurements per sample are required. Pass the conductor through a calibrated hole (conductor diameter 0,05 mm) and subject it to an increasing tensile force F until it slides inside the insulating cover. The tensile speed shall be (100 10) mm/min. 5 Requirem

22、ents 5.1 Requirements for stripping capability of the jacket (screened cables) The stripping operation shall not exceed 40 s for a suitably skilled operator. prEN 3475-701:2016 (E) 5 5.2 Requirement for adherence of the insulation 5.2.1 Method A The minimum values of the forces of adherence shall be

23、 at least equal to the values specified in the technical specification. 5.2.2 Method B The minimum value of each measurement of the force of adherence shall be at least equal to the value specified in the product standard. If one measurement is less than the value specified in the product standard, 2 other measurements are done. The median value of the 5 measurements shall be at least equal to the value specified in the product standard.

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