ASD-STAN PREN 4056-001-2013 Aerospace series Cable ties for harnesses Part 001 Technical specification (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4056-001 Edition P 2 September 2013 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATION Rue Montoyer 10 - 1000 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.org ICS: 49.060 Supersedes editio

2、n P 1 of June 2002 and will supersede EN 4056-001:2006 Descriptors: ENGLISH VERSION Aerospace series Cable ties for harnesses Part 001: Technical specification Srie arospatiale Frettes de cblage pour harnais Partie 001 : Spcification technique Luft- und Raumfahrt Befestigungsbnder fr Leitungsbndel T

3、eil 001: Technische Lieferbedingungen 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 Aerospace Industry. It has been technically a

4、pproved 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-identification of the standard. After exami

5、nation 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 have then to implement the EN at national

6、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 1 September 2013 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2013 by ASD-ST

7、AN prEN 4056-001:2013 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions .3 4 Conditions of use .4 5 Descriptions and design .4 6 Tests 5 7 Quality assurance 7 8 Designation and marking 8 9 Packaging and storage .9 Foreword This standard was reviewed by the Dom

8、ain Technical Coordinator of ASD-STANs 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. prEN 4056-001:2013 (E) 3 1 Scope This standard specifies the char

9、acteristics, test methods, qualification and acceptance conditions of plastic cable ties, used for the bundling, fixing and/or marking of cable harnesses in aircraft. The cable ties should be installed with a qualified application tool, which controls the application force thus avoiding damage to th

10、e cable insulation. It defines the aerospace requirements not specified in EN 62275. 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 t

11、he referenced document (including any amendments) applies. EN 2424, Aerospace series Marking of aerospace products EN 2825, Aerospace series Burning behaviour of non metallic materials under the influence of radiating heat and flames Determination of smoke densityEN 2826, Aerospace series Burning be

12、haviour of non metallic materials under the influence of radiating heat and flames Determination of gas components in the smokeEN 3475-100, Aerospace series Cables, electrical, aircraft use Test methods Part 100: General EN 4056-002, Aerospace series Cable ties for harnesses Part 002: Index of produ

13、ct standards 1)EN 4057 (all parts), Aerospace series Cable ties for harnesses Test methods EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts EN 62275, Cable management systems Cable ties for electrical installations ISO 8815, Aircraft Electrica

14、l Cables and Cable Harnesses Vocabulary MS 90387, Tool, hand, adjustable for plastic and metal tie down straps 2)3 Terms and definitions For the purposes of this standard, the terms and definitions given in EN 3475-100 and ISO 8815 and the following apply. 3.1 cable loom or cable harness any assembl

15、y of cables, complete with end terminals, which may be manufactured and formed on or off the aircraft, with two or more end destinations 3.2 cable bundle any group of cables which are tied together 1) Published as ASD-STAN Prestandard at the date of publication of this standard. http:/www.asd-stan.o

16、rg/ 2) Published by: DoD National (US) Mil. Department of Defense. http:/www.defenselink.mil/ prEN 4056-001:2013 (E) 4 4 Conditions of use 4.1 Temperature ratings (type) The ties shall be capable of use within the temperature range specified in the product standards. Temperature ratings shall be def

17、ined by the material codes specified in EN 4056-002. 4.2 Flammability class Ties shall meet either class 1 or class 2 flammability requirements as defined Table 2 test EN 4057-302 and in the appropriate product standard: Class 1 has the highest degree of flame retardant properties; Class 2 has a low

18、er degree of flame retardant properties. 5 Descriptions and design 5.1 Description Ties, see Figure 1, shall be designed for installation by a tool providing controlled tension in accordance with MS 90387. The head design, locking system and strap cross sectional dimensions shall be such that the re

19、quirements of the tests given in Clause 6 are met. Ties are available with plastic or metallic locking mechanisms and those with plastic locking mechanisms may have either internal or external serrations on the strap. Figure 1 prEN 4056-001:2013 (E) 5 5.2 Design and manufacture The finish shall prev

20、ent abrasion to the harness and to adjacent harnesses or breakouts. In completing the joint, no sharp or abrasive edges shall be formed that could damage the cable insulation of the loom or any adjacent looms, or that could cause injury to an operator. 5.3 Materials Ties shall be made from virgin ma

21、terials which may be formulated to be UV resistant. The use of in process reground material to a maximum of 25 % by mass is permissible but is limited to the percentage used in the qualification sample. Materials shall be identified by the codes in EN4056-002. 5.4 Colour Ties shall be either natural

22、 or un-pigmented material finish or a colour according to the codes shown in Table 1. Table 1 Colour codes Code Colour0 Black 1 Brown 2 Red3 Orange 4 Yellow 5 Green 6 Blue 7 Violet 8 Grey 9 Natural/un-pigmented The colour shall be uniform throughout any coloured tie. 6 Tests All non-metallic materia

23、ls used for the manufacture of cable ties shall be tested for their smoke and toxicity properties in accordance with EN 2825 and EN 2826 as defined in the product standard. Finished products shall be tested as detailed in Table 2 and the product standard. Before commencement of these tests the calib

24、ration of the application tools to be used shall be verified in accordance with EN 4057-407. prEN 4056-001:2013 (E) 6 Table 2 Tests (1 of 2) EN 4057- Designation of the test Number of specimens Details 201 Visual examination All test specimens to be examined. There shall be no sharp or abrasive edge

25、s. 202 Examination of mass and dimensions All test specimens to be tested. The mass and dimensions shall be in accordance with the product standard. 301 Salt mist test (applicable to ties containing metallic locking barbs) 3 specimens for each cross section grouping (i.e. loop tensile strength group

26、). The minimum loop tensile strength shall be in accordance with the product standard. The locking device shall show no sign of corrosion. 302 Flammability 3 specimens (see Table 5) of the largest cross-section each material code. (i.e. loop tensile strength group) aAfter removal of the burner from

27、the specimen, any flame shall extinguish within 5 s. If there are no flaming droplets (or particles) during the test, and the flame extinguishes within 5 s, the specimen will be classified as Class 1. If there are flaming droplets (or particles) but all the flames extinguish within 5 s, the specimen

28、 will be classified as Class 2. 303 Resistance to fluids 3 specimens for each material type and or class for each of the test solutions. The minimum loop tensile strength should be in accordance with the product standard. 304 Loop tensile strength at maximum working temperature 3 specimens for each

29、cross section grouping (see Table 5)(i.e. loop tensile strength group). The minimum loop tensile strength should be in accordance with the product standard. 305 Colour fastness (applicable only to coloured ties) 1 specimen per colour, material type and material class. The colour fastness of the spec

30、imen should be in accordance with the product standard. 306 Heat ageing test 3 specimens for each material code and cross section group.The tensile strength shall not be lower than that specified in the appropriate product standard 307 Resistance to ultra violet radiation As detailed. The average el

31、ongation at break of the exposed samples shall be not less than 60 % of the figure for the unexposed samples. 401 Loop tensile strength 3 specimens per cross section grouping (see Table 5). The minimum loop tensile strength shall be in accordance with the product standard. prEN 4056-001:2013 (E) 7 T

32、able 2 Tests (2 of 2) EN 4057- Designation of the test Number of specimens Details 402 Life cycle Specimens for each cross section grouping (see Table 5)(i.e. loop tensile strength group). 1. There shall be no damage to the cable insulation when viewed with a 10 times magnification aid. 2. The speci

33、mens shall be examined for cracks, breaking and/or release of the locking device during removal from the vibration test harness. 3. The minimum loop tensile strength shall be in accordance with the product standard. 404 Low temperature installation 3 specimens for each cross section grouping (see Ta

34、ble 5)(i.e. loop tensile strength group). The minimum loop tensile strength shall be in accordance with the product standard. 405 Compass safe distance (applicable to ties containing metallic locking barbs) 1 specimen The compass safe distance shall not exceed 125 mm. 406 Locking device retention (a

35、pplicable to ties containing metallic locking barbs) 3 specimens The force to pull out the barb from the tie head shall meet the requirement of the appropriate product standard. 407 Verification of application tool settings 5 specimens a At the appropriate setting the reading for all 5 specimens sha

36、ll be as detailed in the product standard 100%. aSmall sizes may contain insufficient mass for these tests to be performed satisfactorily. 7 Quality assurance 7.1 General conditions Quality assurance conditions shall conform to EN 9133. 7.2 Qualification testing All the applicable tests in Table 3 s

37、hall be performed on all types, classes and colours of product at the commencement of manufacture, the use of new manufacturing tooling or change of raw material. These tests shall also be carried out at the re-commencement of production in the event of a stoppage longer than three years. 7.3 Mainte

38、nance of qualification For products in continuous production, the tests in Table 3, maintenance of qualification, shall be performed every three years. prEN 4056-001:2013 (E) 8 Table 3 Maintenance of qualification EN 4057- Designation of the test Number of specimens 201 Visual examination 6 specimen

39、s to be tested 202 Examination of mass and dimensions 3 specimens to be tested 306 Heat ageing 3 specimens to be tested 401 Loop tensile strength 3 specimens to be tested 406 Locking device retention a3 specimens to be tested aOnly for cable ties with metal locking barbs. 7.4 Acceptance testing Samp

40、les should be taken at random in every batch and a test should be carried out as shown in Table 4. Table 4 Acceptance EN 4057- Designation of the test Number of specimens 201 Visual examination 6 specimens to be tested 202 Examination of mass and dimensions 3 specimens to be tested. Dimensions only.

41、 401 Loop tensile strength 3 specimens per batch 8 Designation and marking 8.1 Marking The manufacturers monogram in accordance with EN 2424, style F shall be marked on the strap of the tie as close to the head as possible such that it is on the outside of the cable bundle after installation. 8.2 De

42、signation EXAMPLE Description block CABLE TIE Identity block EN4056-001A1P1A Number of this standard Material code (see EN 4056-002) Flammability class (see 4.2) Size code (see Table 5) Colour code (see Table 1) Variant code (see Table 6) prEN 4056-001:2013 (E) 9 Table 5 Size code Size code Recommen

43、ded bundle diameter mm min. max. P 1,6 20 R 1,6 50S 1,6 80T 10 100 U 1,6 110V 10 130 Table 6 Variant of cable tie (serration position) Code Description A Serrations inside B Serrations outside C No serrations 9 Packaging and storage 9.1 Packaging Each packet shall be identified with the following information: a) Product designation, b) Manufacturers name, c) Manufacturers part number, d) Quantity, e) Batch number and date of manufacture. 9.2 Storage Until required for use, it is recommended that the product is protected from exposure to direct sunlight.