ASD-STAN PREN 6059-304-2015 Aerospace series Electrical cables installation Protection sleeves Test methods Part 304 Flammability (Edition P 2).pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 6059-304 Edition P 2 December 2015 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: Supersedes edition P 1 of

2、 September 1997 Descriptors: ENGLISH VERSION Aerospace series Electrical cables, installation Protection sleeves Test methods Part 304: Flammability Luft- und Raumfahrt Elektrische Leitungen, Installation Schutzschluche Prfverfahren Teil 304: Flammwidrigkeit Srie arospatiale Cbles lectriques, instal

3、lation Gaines de protection Mthodes dessais Partie 304 : Rsistance au feu 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

4、 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-identif

5、ication 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 have t

6、hen 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 1st December 2015 Comments should be sent within six months after the date of publication to ASD-STAN Elect

7、rical Domain Copyright 2015 by ASD-STAN prEN 6059-304:2015 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Preparation of specimens . 3 4 Apparatus . 4 5 Methods 4 6 Requirements . 7 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical D

8、omain. 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 6059-304:2015 (E) 3 1 Scope This standard specifies methods for determining the flammability characteristics of

9、 protective sleeves, including heat shrink dual wall sleeves, for electric cable and cable bundles. It shall be used together with EN 6059-100. These tests are designed to satisfy the requirements in JAR-25 Section 1, Part 1, Appendix F. There are two methods included in this standard: Method 1 Appl

10、icable for textile fabric sleeves. Method 2 Applicable non-textile sleeves for use on electrical/ optical cables and harness components. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dat

11、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1057, Copper and copper alloys Seamless, round copper tubes for water and gas in sanitary and heating applications EN 3844-1, Aerospace series F

12、lammability of non-metallic materials Part 1: Small burner test, vertical Determination of the vertical flame propagation EN 6059-100, Aerospace series Electrical cables, installation Protection sleeves Test methods Part 100: General JAR-25, Joint Aviation Requirements for Large Aircraft 3 Preparati

13、on of specimens 3.1 Method 1 The specimen for fabric sleeves shall be a rectangular shape of at least 75 mm by 305 mm. 3.2 Method 2 A length of sleeving of at least 250 mm is to be mounted on a bundle of 7 AD 8 cables which has been covered in a copper braid 1). If necessary to ensure that the sleev

14、e is correctly fitted it may be secured at either end by ptfe/glass ties. Figure 1. Heat shrinkable sleeves shall be recovered onto a copper tube, Table 1, of diameter approximately one size larger than the specified maximum recovered internal diameter. The copper tube shall have a maximum wall of n

15、ot greater than 1,05 mm. The specimen shall be marked 100-105 mm from the lower end to indicate the central point for flame application. 1) Alternatively a length of thin wall copper tube pipe could be substituted for the cable bundle. prEN 6059-304:2015 (E) 4 4 Apparatus 4.1 Test chamber Method 1:

16、the test chamber and specimen holder is described in EN 3844-1 alternatively the chamber used for Method 2 can be utilised. Method 2: this shall be a chamber measuring not less than 700 mm high 300 mm wide 300 mm deep, open at the top, open at the front and situated in a draught-free environment but

17、 with sufficient air supply to provide normal combustion. General arrangements are shown in Figures 1 and 2. 4.2 Burner Bunsen type gas burner: the burner shall have a 6 mm inlet, a needle valve in the base for gas adjustment, a nominal bore of 9,5 mm and a barrel of approximately 100 mm above the a

18、ir inlets. Methane, propane or natural gas may be used provided it meets the temperature requirements of 5.2. WARNING NOTE Care should be exercised in setting up and performing this test as toxic fumes may be given off during combustion. The test chamber shall be placed in a fume cabinet that will a

19、llow evacuation of gaseous products of combustion at the end of the test. 5 Methods 5.1 Method 1 Vertical test The specimen shall be hung vertically in the centre of the test cabinet. For fabrics, the direction of weave corresponding to the most critical flammability conditions must be parallel to t

20、he longest dimension. Each specimen must be supported vertically. The test shall be carried out in accordance with EN 3844-1 and the flame shall be not less than 1550F (843,33 C) when measured in the centre of the flame Six separate specimens shall be tested, three with application times of 12-14 s

21、and three with application times of 60-62 s. 5.2 Method 2 60 test The specimen shall be placed at an angle of 60 with the horizontal in the test cabinet. The specimen shall be parallel to and 150 mm from the front of the chamber. The lower end of the specimen must be held rigidly. The upper end of t

22、he specimen be retained either by attaching it to a cable which is pass over a pulley to a mass or by means of a spring anchored at the top so that the specimen is held tautly throughout the flammability test. The burner shall be positioned so that hottest part of the flame is applied to the test ma

23、rk. The burner must be mounted underneath the test mark on the specimen, perpendicular to the specimen and at an angle of 30 to the vertical plane of the specimen. See Figure 2. The flame shall be adjusted to provide an overall height of approximately 76 mm with an inner cone approximately one third

24、 of the flame height. The hottest part of the flame, tip of the inner cone, is to be measured with a calibrated thermocouple pyrometer, and shall be between 950 C and 965 C. The flame is to be applied to the specimen for 30-32 s and on removal of the flame the maximum after burn time, burn length an

25、d the maximum time of any flaming droplets shall be recorded. Burn length is the distance from the lowest to the highest points where the flame has caused partial or complete consumption and charring. Ignore any areas that are sooted, warped or discoloured and areas where material has shrunk or melt

26、ed away from the heat source. prEN 6059-304:2015 (E) 5 Table 1 Copper tube sizes (EN 1057) Nominal tube OD mm 6 8 10 12 15 22 28 35 42 Wall thickness mm 0,6 - 0,8 0,6 - 0,8 0,6 - 0,80 0,6 - 0,80 0,7 - 1,0 0,9 - 1,2 0,9 - 1,2 1,2 - 1,5 1,2 - 1,5 Figure 1 Method 1 Vertical test prEN 6059-304:2015 (E)

27、6 Key 1 Box construction aluminium alloy 3,15 mm 2 Upper datum point 3 Pulley support bracket (lowthermal conductivity) 4 Support frame open at front 5 Weights as required 6 600 mm Distance between reference marks 7 Flame application point (flame centre datum) 8 Bottom clamp support (lowthermal cond

28、uctivity) 9 Bunsen burner support (lowthermal conductivity) a approx. Figure 2 Method 2 60 test prEN 6059-304:2015 (E) 7 6 Requirements A minimum of three specimens per flame application time shall be tested and results be not greater than. 6.1 Method 1 Application time 12 s 60 s Maximum burn length

29、 203 mm 152 mm Flame extinction after burner removal 15 s 15 s Droplets maximum flaming after dropping 5 s 3 s 6.2 Method 2 The maximum burn length shall not exceed 76 mm and the maximum flame time after removal of the flame source shall not exceed 30 s. Droplets from the test specimen shall not continue to flame for more than a maximum of 3 s. Application time 30 s Maximum burn length 76 mm Maximum after burn time 30 s Maximum time of any flaming droplets 3 s