1、BSI Standards PublicationBS EN 6059-308:2014Aerospace series Electricalcables, installation Protection sleeves TestmethodsPart 308: Rapid change of temperatureBS EN 6059-308:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 6059-308:2014.The UK participation
2、in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract
3、. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 84535 2ICS 49.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
4、 theStandards Policy and Strategy Committee on 31 December 2014.Amendments issued since publicationDate Text affectedBS EN 6059-308:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 6059-308 December 2014 ICS 49.060 English Version Aerospace series - Electrical cables, installation - Protecti
5、on sleeves - Test methods - Part 308: Rapid change of temperatureSrie arospatiale - Cbles lectriques, installation - Gaines de protection - Mthodes dessais - Partie 308: Variation rapide de temprature Luft- und Raumfahrt - Elektrische Leitungen, Installation - Schutzschluche - Prfverfahren - Teil 30
6、8: Schneller Temperaturwechsel This European Standard was approved by CEN on 4 January 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date
7、 lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation u
8、nder the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Forme
9、r Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT E
10、UROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 6059-308:2014 EBS EN 6059-308:2014EN 6059-308:2014 (E) 2 C
11、ontents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Preparation of specimens .4 4 Apparatus .5 5 Method 6 6 Requirements .6 BS EN 6059-308:2014EN 6059-308:2014 (E) 3 Foreword This document (EN 6059-308:2014) has been prepared by the Aerospace and Defence Industries Association of Europe - S
12、tandardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard s
13、hall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2015, and conflicting national standards shall be withdrawn at the latest by June 2015. Attention is drawn to the possibility that some of the elements of this documen
14、t may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Aus
15、tria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swed
16、en, Switzerland, Turkey and the United Kingdom. BS EN 6059-308:2014EN 6059-308:2014 (E) 4 1 Scope This European Standard specifies a method of assessing the behaviour of conductive protection sleeves or conduits after exposure to a rapid change of temperature. It shall be used together with EN 6059-
17、100. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
18、amendments) applies. EN 3475-301, Aerospace series Cables, electrical, aircraft use Test methods Part 301: Ohmic resistance per unit length EN 6059-100, Aerospace series Electrical cables, installation Protection sleeves Test methods Part 100: General 3 Preparation of specimens Each sleeve or condui
19、t specimen shall have a length of 600 mm minimum, and shall be prepared according to Figure 1. The cable bundle shall be made of standard aerospace cables, according to Figure 1. The diameter of the bundle shall be the maximum diameter applicable to the used sleeve or conduit. Then apply a twisting
20、with the number of twists per metre, as specified in the product standard. The cable bundle and the twisted sleeve shall be tied using standard aerospace tying devices compliant with the temperature range. The tying devices on the cable bundle shall be installed with a pitch of 300 mm. The tying dev
21、ices on the sleeve shall be installed with a pitch of 100 mm. Measure the ohmic resistance of each specimen according to EN 3475-301, tests shall be carried out at ambient temperature Ta (typically 20 C). BS EN 6059-308:2014EN 6059-308:2014 (E) 5 Dimensions in millimetres Key 1 Tying device 2 Cable
22、bundle 3 Sleeve 4 Bundle at the maximum allowed diameter of the sleeve Figure 1 Specimen configuration 4 Apparatus Two chambers, one for low temperature and one for high temperature, shall be provided. The chambers shall be located that the time of transfer (t2) of the specimen from one chamber to t
23、he other shall be less than 1 min. The chambers shall be capable of maintaining the specified temperatures (TA andTB) to 3 % at those locations where the specimens are installed. The volume of the chambers shall be such that after insertion of the specimens, the temperature shall be within the speci
24、fied tolerances after a time of not more than 5 min or 10 % of the exposure time, whichever is the smallest. Unless otherwise specified, the thermal conduction of the mounting shall be sufficiently low, so that the specimens may be considered thermally isolated. BS EN 6059-308:2014EN 6059-308:2014 (
25、E) 6 5 Method The specimen shall be installed in an oven and subjected to a temperature cycling defined in Figure 2. The number of cycles shall be 10. Keys 1 Time t min. 2 1 cycle A: start of the first cycle t1= 30 t2 1 min. B: end of first cycle Figure 2 Temperature cycle 6 Requirements The pass/fa
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