1、 STD-AECMA PREN bULI9-003-ENGL 1797 1012311 0013Li21 253 AECMA STANDARD NORME AECMA AECMA NORM prEN 6049-003 Edition P 1 September 1997 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 1 1 ICs: Desc
2、riptors: ENGLISH VERSION Aerospace series Electrical cables, installation Protection sleeve in meta-aramid fibres Part 003: Braided, tubular, expandable Product standard Srie arospatiale Luft- und Raumfahrt Cbles lectriques, installation Gaine de protection en fibres mta-aramides Partie 003 : Tresse
3、, tubulaire, expansible Schutzschlauch aus Meta-Aramidfasern, Elektrische Leitungen, Installation Teil 003: Geflecht, rhrenfrmig. dehnbar Norme de produit Produkt Norm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Indus
4、tries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an e
5、xtent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European
6、 Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be suDDlied by B.N.A.E. - TechnoDolis 54 - 199. rue Jean-Jacaues Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX I Comments should be sent within six months after the date of publication to I Edition appro
7、ved for publication 1997-09-30 AECMA Gulledelle 94 B-1200 BRUXELLES AIB/TF3 Chairman Mr J. Luck aecma 1997 Page 2 prEN 6049-003 : 1997 Contents list 1 Scope 2 Normative references 3 Terminology 4 Required characteristics 5 Test methods 6 Designation 7 Marking STD-AECMA PREN b049-003-ENGL 3997 301233
8、3 0033423 02b Page 3 prEN 6049-003 : 1997 1 Scope This standard defines the characteristics of tubular braided expandable mechanical protection sleeves for electrical cable and cable bundles made from Meta-aramid fibres and provided with a water repelled protection. 2 Normative references EN 3475-60
9、1 EN 3475602 EN 6049-001 EN 6059-1 O0 Aerospace series - Cables, electrical, aircraft use - Test methods - Part 601 : Smoke density 2). Aerospace series - Cables, electrical, aircraft use - Test methods - Part 602 : Toxicity 2), Aerospace series - Electrical cables, installation, protection sleeve i
10、n Meta- aramid fibres - Part O01 - Technical specification I). Aerospace series - Electrical cables, installation, protection sleeve - Test methods - Part 1 O0 - General. 3 Terminology See EN 6049-001 4 Required characteristics 4.1 Composition, dimensions and mass 4.1.1 Composition of the tows Each
11、tow shall be built-up of several groups of multifilament fibres made from Meta-aramid. The number of groups which forms a tow and the width of the tow depends on the braiding configuration (braiding figure and braiding angle) of the sleeve, see 4.1.2. The thickness of the tow shall be so that the fi
12、nished sleeve meet the mechanical and environmental requirements. One length of sleeve shall be built-up of one type of tow. 1 Published as AECMA Prestandard at the date of publication of this standard 2, In preparation at the date of publication of this standard STD-AECMA PREN bCIq7-003-ENGL 2777 =
13、 LOI12311 0013424 Tb2 Page 4 prEN 6049-003 : 1997 4.1.2 Composition, dimensions and mass of the sleeve Size code d d Delivered min. (mm) (mm) 20 25 12 12 15 15 The composition of the sleeve (braiding figure, braiding angle and tow width) shall be so that the sleeve meet the requirements for dimensio
14、ns, coverage, expansion range and mass. The coverage shall be 80 % minimum. The braiding figure shall consist of two groups of tows in two directions. The braiding angle between the two groups shall be equal over the length of the sleeve. The maximum difference in length of a sleeve measured in the
15、delivered condition and measured on a mandrel with the delivered diameter in accordance with EN 6059-202, is f 3 %. Figure 2 and table 2 give the composition and the dimensions of the sleeve. f Braiding pattern d : inner diameter Figure 1 : Composition of the sleeve Table 1 : Dimensions and mass d m
16、ax. (mm) d Mass Nominal max.2) 1 (mm) (g/m) 02 I 1 I 1 2 I 2 I 3 o4 I 2 I 2 4 I , 4 I 4 061 4 I 4 8 6 I 85 08 I 6 I 6 12 8 I 113 10 I 8 I 8 16 10 I 14 15 I 10 I 10 20 15 I 173 24 30 30 I 20 I 20 40 30 I 39.5 (1) In practice approximately the maximum diameter of a cable bundle. (2) At the delivered d
17、iameter. STD-AECMA PREN bOq9-003-ENGL 1997 LO12311 0013425 9T7 Page 5 prEN 6049-003 : 1997 4.2 Color and materials 4.2.1 Color Color shall be olive green, code 5. 4.2.2 Materials The materials shall be multifilament fibres of Meta-aramid and meet the requirements as specified in this standard, 4.3 M
18、echanical properties 4.3.1 Sun light exposure After testing according to EN 6059-301 for 40 hours, the retention of the tensile strength shall be 45 % minimum with respect to the determined values of non-tested tows. 4.3.2 Temperature range The operation temperature of the protection sleeves shall b
19、e : - Maximum : +240 OC, - Minimum : -55 “C. Note : Above +175 OC : loss of water repellent properties. 4.3.3 Resistance to fluids After testing according to EN 6059-303, the retention of the tensile strength shall be 90 % minimum with respect to the determined values of non-tested tows. 4.3.4 Water
20、 absorption To fulfil the requirements for water absorption, the sleeve shall repel water as tested in EN 6059-305 for 6 hours. This test shall be executed after a high temperature exposure test according to EN 6059-302 at +175 “C. 4.3.5 Mould growth After tested in accordance with EN 6059-306, ther
21、e shall no external deterioration which would affect service use and no mould growth visible to the naked eye. 4.3.6 Tensile strength of tows The tensile force to be applied per dTEX shall not be less than 0,03 N. Degradation of the tensile strength after environmental tests shall be within the limi
22、ts as mentioned in the relevant paragraph. For this test, unbraided tows of the batch which have been used for braiding of the sleeves may be used. STD-AECMA PREN bO47-003-ENGL 1797 D 1012311 001342b 835 Page 6 prEN 6049-003 : 1997 Test method EN 6059 - 201 5 Test methods Title Remarks Visual inspec
23、tion See 4.1 and 4.2.1 The tests shall be carried out as shown in table 1. For the number of samples to be tested, see EN 6049-00 1 . EN 6059 - 203 EN 6059 - 301 Table 2 : Test methods and sanctions Coverage See 4.1.2 Sun light exposure See 4.3.1 EN 6059 - 305 EN 6059 - 306 EN 6059 - 202 I Dimension
24、s and mass I See 4.1.2 Fluid absorption See 4.3.4 Mould growth See 4.3.5 EN 6059 - 401 EN 6059 - 402 EN 6059 - 302 Expansion range See 4.1.2 Bending properties Not applicable High temperature exposure EN 6059 - 403 EN 6059 - 404 At maximum operating temperature (continue). See 4.3.2 Scrape abrasion
25、Tensile strength See 4.3.6 Needle load shall be 10 N EN 6059 - 303 I Resistance to fluids I See 4.3.3 EN6059-304 I Flammability I EN 6059 - 405 I Dynamic cut through I Load shall be 30 N EN 3475 - 601 I Smoke density I EN3475-602 I Toxicity 6 Designation EXAMPLE : Description block BRAIDED, TUBULAR, EXPANDABLE ,vntity block EN 6049-003 - 02 -5 Size code (see table 1 , Color code (see 4.2.1) 7 Marking For the marking of the packaging, see EN 6049-001.
