1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 6059-308 Edition P 1 June 2012 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH
2、VERSION Aerospace series Electrical cables, installation Protection sleeves Test methods Part 308: Rapid change of temperature Srie arospatiale Cbles lectriques, installation Gaines de protection Mthodes dessais Partie 308 : Variation rapide de temprature Luft- und Raumfahrt Elektrische Leitungen, I
3、nstallation Schutzschluche Prfverfahren Teil 308: Schneller Temperaturwechsel 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 Aeros
4、pace Industry. It has been technically approved 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-ide
5、ntification 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 Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members ha
6、ve 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. Edition approved for publication 30 June 2012 Comments should be sent within six months after the date of publication to ASD-STAN Electr
7、ical Domain Copyright 2012 by ASD-STAN prEN 6059-308:2012 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of specimens .3 4 Apparatus .4 5 Method 5 6 Requirements .5 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain
8、. 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 6059-308:2012 (E) 3 1 Scope This standard specifies a method of assessing the behaviour of conductive protection sle
9、eves or conduits after exposure to a rapid change of temperature. It shall be used together with EN 6059-100. 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
10、, the latest edition of the referenced document (including any 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 Par
11、t 100: General 3 Preparation of specimens Each sleeve or conduit 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 a
12、pplicable to the used sleeve or conduit. Then apply a twisting 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
13、bundle shall be installed with a pitch of 300 mm. The tying devices 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). prEN 6059-308:2012 (E) 4 Dimensi
14、ons in millimetres Key 1 Tying device 2 Cable 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 trans
15、fer (t2) of the specimen from one chamber to the 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 specim
16、ens, the temperature shall be within the specified 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 i
17、solated. prEN 6059-308:2012 (E) 5 5 Method The specimen shall be installed in an oven and subjected to a temperatures 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/fail requirements shall be specified in the product standard.
