AECMA PREN 3475-604-2009 Aerospace series Cables electrical aircraft use Test methods Part 604 Resistance to dry arc propagation Edition P 2《航空航天系列.航空用电缆.测试方法.第604部分 抗干电弧传导.版本P2》.pdf
《AECMA PREN 3475-604-2009 Aerospace series Cables electrical aircraft use Test methods Part 604 Resistance to dry arc propagation Edition P 2《航空航天系列.航空用电缆.测试方法.第604部分 抗干电弧传导.版本P2》.pdf》由会员分享,可在线阅读,更多相关《AECMA PREN 3475-604-2009 Aerospace series Cables electrical aircraft use Test methods Part 604 Resistance to dry arc propagation Edition P 2《航空航天系列.航空用电缆.测试方法.第604部分 抗干电弧传导.版本P2》.pdf(12页珍藏版)》请在麦多课文档分享上搜索。
1、ASD STANDARD NORME ASD ASD NORM prEN 3475-604 Edition P 2 June 2009 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: 49.060 Supersedes edition P 1 of
2、 October 1997 and will supersede EN 3475-604:2002 Descriptors: Aerospace industry, aircraft equipment, electrical cable, test ENGLISH VERSION Aerospace series Cables, electrical, aircraft use Test methods Part 604: Resistance to dry arc propagation Srie arospatiale Cbles lectriques usage aronautique
3、 Mthodes dessais Partie 604 : Rsistance lamorage et la propagation darc lectrique, essai sec Luft- und Raumfahrt Elektrische Leitungen fr Luftfahrtverwendung Prfverfahren Teil 604: Lichtbogenfestigkeit, trocken This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STA
4、N (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 by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, th
5、e technical 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 (E
6、uropean 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 giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edi
7、tion approved for publication 10 June 2009 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2009 by ASD-STAN Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without licens
8、e from IHS-,-,-prEN 3475-604:20092 Contents Page Foreword Erreur ! Signet non dfini. 1 Scope 3 2 Normative references 3 3 Specimen requirements 4 4 Preparation of specimen.4 5 Apparatus .5 6 Method 9 7 Requirements 11 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STA
9、Ns 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. Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networki
10、ng permitted without license from IHS-,-,-prEN 3475-604:20093 1 Scope This standard specifies a method for appraising the behaviour of cable insulation when an electric arc is initiated and maintained by two powered cables rubbing against a blade. This standard shall be used together with EN 3475-10
11、0. The primary aim of this test is: to produce, in a controlled fashion, continuous failure effects which are representative of those which may occur in service when a typical cable bundle is damaged by abrasion such that electrical arcing occurs, both between cables and between cables and conductiv
12、e structure, and to examine the aptitude of the insulation to track, to propagate electric arc to the electrical origin. Originally defined for 115 Vac network, this test also proposes conditions for 230 Vac network. Unless otherwise specified in product standard, only 115 Vac conditions shall be sa
13、tisfied. Six levels of prospective fault current have been specified for concerned cable sizes (see Clause 7). It is generally agreed that larger sizes need not be assessed since the short-circuit phenomenon becomes dominant at low line impedances. Unless otherwise specified in the technical/product
14、 standard sizes 002, 006 and 020 cable shall be assessed. 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 (inc
15、luding any amendments) applies. EN 2350, Aerospace series Circuit breakers Technical specification. EN 2702, Aerospace series Aluminium alloy AL-P6061 T6 or T62 Drawn or extruded bar and section a or D 200 mm. EN 3197, Aerospace series Installation of aircraft electrical and optical interconnection
16、systems.1)EN 3475-100, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General. EN 3475-302, Aerospace series Cables, electrical, aircraft use Test methods Part 302: Voltage proof test. A-A-52083, Tape, lacing and tying, glass. 2)1) Published as ASD Prestandard at the date o
17、f publication of this standard. 2) Published by : Department of Defense Industrial Supply Center, ATTN: DISC-BBEE, 700 Robbins Avenue, Philadelphia, PA 19111-5096 USA. Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license fr
18、om IHS-,-,-prEN 3475-604:2009 4 3 Specimen requirements Cables to be tested shall be of traceable origin and shall have passed the high voltage dielectric test defined in the product standard. 4 Preparation of specimen 4.1 Cut seven separate lengths of approximately 0,5 m consecutively from one leng
19、th of cable, and strip each of the ends of insulation to permit electrical connection. Clean each length of cable with a clean cloth moistened with propan-2-ol (isopropyl alcohol) fluid. 4.2 Lay up the seven cables as follows: a) Form the cables in a six around one configuration as shown in Figure 1
20、. b) Ensure that all cables are straight and geometrically parallel, and restrained by ties such that they are in continuous contact for at least a 75 mm continuous length around the mid point of the loom length. This is called the test zone. c) Position the ties at 15 mm to 20 mm spacing within the
21、 test zone. The tie material shall be PTFE glass lacing tape conforming to A-A-52083 type IV, finish D, size 3. d) Number the cables as shown in Figure 1 such that the cables in contact with the blade are numbers A1 and B1. Test Blade Key 1 Original position 2 Final position A1-A2 : Phase A B1-B2 :
22、Phase B C1-C2 : Phase C N1-N2 : Inactive cables connected to earth Figure 1 Specimen configuration B2 C1 A2 B1 A1 N1 N2 12Copyright ASD-STAN Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-prEN 3475-604:20095 5 Apparatus 5.1
23、 Electrical equipment Connect the seven cables of the test sample within a circuit as shown in Figure 2. This circuit shall have the following requirements: a) The provision of adjustable levels of prospective fault currents for the five A, B and C cables and an electrical return path for the two N
24、cables. b) A three phase 115/200 V 400 Hz (115 Vac network) or 230/400 V 400 Hz (230 Vac network) star (Y) connected supply shall be derived from a dedicated rotary machine capable of sustaining the maximum prospective fault current given in Table 1 for at least sufficient time for circuit protectio
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