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1、BS EN 6059-502:2009 ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Aerospace series Electrical cables, installation protection sleeves Test methods Part 502: Resistance to electrical arcs Licensed Copy: athen reading, Reading University Library, 24
2、/01/2010 02:05, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2010. BSI 2010 ISBN 978 0 580 62006 5 Amendments/corrigenda issued since publication Date Comments BS EN 6059-502:2009 National foreword Thi
3、s British Standard is the UK implementation of EN 6059-502:2009. The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology. A list of organizations represented on this committee can be obtained on request to its secret
4、ary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:0
5、5, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 6059-502 September 2009 ICS 49.060 English Version Aerospace series - Electrical cables, installation - Protection sleeves - Test methods - Part 502: Resistance to electrical arcs Srie arospatiale
6、- Cbles lectriques, installation - Gaines de protection - Mthodes dessais - Partie 502: Rsistance aux arcs lectriques Luft- und Raumfahrt - Elektrische Leitungen, Installation - Schutzschluche - Prfverfahren - Teil 502: Lichtbogenfestigkeit This European Standard was approved by CEN on 30 July 2009.
7、 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 lists and bibliographical references concerning such national standards may be obtained on
8、application to the CEN 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 under the responsibility of a CEN member into its own language and notified to the CEN Management Cen
9、tre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
10、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by a
11、ny means reserved worldwide for CEN national Members. Ref. No. EN 6059-502:2009: E Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Specimen
12、requirements 4 4 Definition and preparation of specimen 5 5 Apparatus .9 6 Method . 12 7 Requirements 13 Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 3 Foreword This document (EN 6059-502:2009) has bee
13、n prepared by the Aerospace and Defence Industries Association of Europe - Standardization (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
14、countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2010, and conflicting national standards shall be withdrawn at the latest by March 2010. A
15、ttention is drawn to the possibility that some of the elements of this document 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
16、 of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, S
17、lovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 4 1 Scope This European Standard specifies a method of assessing the behaviour of prot
18、ection sleeves or conduits subject to an external electric arc, ever at 115 Vac or 230 Vac 400 Hz. This European Standard shall be used together with EN 6059-100. The primary aim of this test is to produce, in a controlled fashion, electric arcs at the immediate vicinity of a protection sleeve or co
19、nduit and to examine possible consequences on cables inside this protection, which are supposed to be maintained in a safe condition. These electric arcs are representative of those, which may occur in service when a typical cable bundle is severely damaged. In order to optimize thickness and mass o
20、f such protection, it is necessary to associate a current limit In to each sleeves or conduits construction. Two levels of prospective fault current are specified for all protection sizes. 2 Normative references The following referenced documents are indispensable for the application of this documen
21、t. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2350, Aerospace series Circuit breakers Technical specification. EN 2267-010, Aerospace series Cables, electrical, for general purpose
22、 Operating temperatures between 55 C and 260 C Part 010: DR family, single UV laser printable Product standard. EN 3475-302, Aerospace series Cables, electrical, aircraft use Test methods Part 302: Voltage proof test. EN 6059-100, Aerospace series Electrical cables, installation Protection sleeves T
23、est methods Part 100: General. 1) EN 6059-501, Aerospace series Electrical cables, installation Protection sleeves Test methods Part 501: Voltage proof test. 1) A-A-52083, Specification for tape lacing and tying. 2) 3 Specimen requirements Protection sleeves or conduits to be tested shall be of trac
24、eable origin and, unless otherwise specified, shall have passed the voltage proof test (EN 6059-501) as defined in the concerned product standard. 1) Published as ASD Prestandard at the date of publication of this standard. 2) Published by Customer Service, Defense Printing Service Detachment Office
25、, 700 Robbins Ave, Building 4D, Philadelphia PA 19111-5094 USA. Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 5 Unless otherwise specified in the concerned technical product standard, at least one size
26、of protection sleeve per sleeve thickness or construction type (if different from one size to another) shall be assessed. If possible for each thickness or construction type the test must be performed on a sample having the minimum authorized thickness or minimum authorized mass. 4 Definition and pr
27、eparation of specimen 4.1 Protected bundle (bundle P) Bundles P are made of arc tracking resistant cables, typically from EN 2267-010 product standard unless otherwise specified in the concerned protection sleeves product standard, with bundle external protection to be tested. The cable bundle outer
28、 diameter shall be as closed as possible to the internal diameter of the protection to be tested. This diameter is obtained: with a full assembly of size 24 cables, or with a central part in various cable types covered with a full and uniform layer of size 24 cables. For open protection sleeves with
29、 an overlapping, in any case the overlap must be placed in front of the short circuit area. 4.2 Aggressive bundle (bundle A) 4.2.1 Definition and constitution Bundles A are made of 7 arc-tracking resistant cables, typically from EN 2267-010 product standard unless otherwise specified in the concerne
30、d protection sleeves product standard, without bundle external protection. The short circuit will be created on these bundles (see 4.3). The cables gauge is chosen in Table 1, in accordance with the In limit specified for the protection sleeves. Table 1 Choice of cable gauge In Amp. CB ratings 3 5 7
31、,5 10 10 15 20 25 50 Gauge 26 24 22 20 18 16 14 12 10 Circuit breaker used to protect these cables must be also in accordance with Table 1. EXAMPLE If the sleeve must provide a 15 amp. protection, take gauge 16 cables to built the bundle with 15 amp. CB ratings. For information the diameter of the b
32、undle will be three times the cable diameter. Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 6 4.2.2 Preparation Cut seven separate lengths of approximately 0,5 m consecutively from one length of cable,
33、and strip one 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. 4.2.3 Lay up the seven cables as follows a) Form the cables in a six around one configuration as shown in Figure 1. b) Ensure t
34、hat all cables are straight and geometrically parallel, and restrained by ties such that they are in continuous contact at least within the test zone. c) Position the ties at 50 mm spacing toward the end of the specimen as shown in Figure 2. NOTE The tie material shall be PTFE glass lacing tape conf
35、orming to A-A-52083, finish D size 3. A1-A2 : Phase A B1-B2 : Phase B C1-C2 : Phase C N : Neutral cable connected to earth Key 1 Drop needle Figure 1 Specimen configuration 1 (10 2) mm C2 N C1 B1 A1 B2 A2 Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy,
36、(c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 7 Key 1 Cable tie 2 Drop needle 3 Drops 4 10 mm to 20 mm 5 Ends of the 7 cables in the same plane Figure 2 Test configuration 4.3 Test configuration The bundles A shall be attached on bundle P by qualified tyraps, according to the following Figure 3 a
37、nd illustrated by photo next page. 50 mm 1 10 2 3 4 5 Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 8 Key 1 Ends of the 7 cables in the same plane 2 10 mm to 20 mm 3 Cable ties 4 Tyraps 5 Two attachment
38、 points 6 Length and end of bundle sample to be define with mechanical test setup 7 Drops 8 Protection 9 Bundle P 10 Bundle A Figure 3 Test bundles configuration 1 Area for droplet 250 mm 100 mm 10 3 2 4 5 7 8 6 9 10 Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontr
39、olled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 9 Figure 4 Illustration 5 Apparatus 5.1 Electrical equipment 5.1.1 For 115 Vac 400 Hz network Connect the seven cables of the test sample within a circuit as shown in Figure 5. This circuit shall have the following requirements: a) The pro
40、vision of adjustable levels of prospective fault currents for the six A, B and C cables. b) A three phase 200/115 Vac 400 Hz 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
41、 time for circuit protection to operate. In any case the generator shall have a 1 min rating of not less than 15 kVA. c) Circuit breakers shall be rated as given in Table 2 and shall be single pole units. They shall have trip characteristics in accordance with EN 2350 or as required in the product s
42、pecification. NOTE In particular case, others ratings of thermal breaker protection could be employed in accordance with aircraft manufacturer rules. d) The electrical power source shall be appropriately protected and it shall be established that no combination of test circuit events would activate
43、this protection. Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 10 e) The ballast Rb resistors shall be non inductive and of appropriate power rating. Care shall be taken to position all laboratory wirin
44、g such that inductive effects are reduced to a practical minimum. Supply cables shall be as short as possible. The ballast resistor Rb is in order to prevent over voltage (115 - 115 W per phase) during the arc extinction phases (opening of an inductive circuit). f) A rheostat, Rf, limiting maximum s
45、hort-circuit current per phase by simulating a line length. g) Appropriate instrumentation, recording and switching control shall be installed in accordance with good laboratory practice. Key 1 Supply protection 2 Test bundle Figure 5 Test schematic circuit 5.1.2 For 230 Vac 400 Hz network a) Apply
46、5.1.1 with the following modifications: in b) replace “200/115 Vac 400Hz” by “400/230 Vac 400Hz”; in e) replace “115 - 115 W per phase” by “230 - 230 W per phase”. Rf V V N U V A2 A1 C1 C2 D2 B1 B2 N 1 2 Rb Licensed Copy: athen reading, Reading University Library, 24/01/2010 02:05, Uncontrolled Copy
47、, (c) BSI BS EN 6059-502:2009 EN 6059-502:2009 (E) 11 b) Except if CBs are defined for 230 Vac uses, before starting tests, there must be CB preliminary verifications: Verify each CB voltage drop under his nominal intensity. Made a short-circuit directly on the terminals of each CB with a shunt with
48、out resistance. Verify again the voltage drop. Repeat five times this cycle. There must be no significant variations in the voltage drop values. If variations or bad tendency occur, CB must be changed after each tripping. 5.2 Test equipment Construct an apparatus as shown diagrammatically in Figure
49、2 which includes the following minimum provisions: a) Electrical terminations to provide a ready means of connecting test specimens into the circuit as shown in Figure 3. b) A transparent enclosure to protect personnel from ejected molten metal and short wavelength ultra violet light. c) An electrolyte delivery system which provides a constant rate of (100 10) mg/min and dispenses drops from an 18 gauge needle, cut of square at the outlet. NOTE The needle wall thickness shall be sele