BS 4G 198-3-1999 Sleeves and moulded components for aircraft electric cables and equipment wires Specification for heat-shrinkable sleeving for binding insulation and identificatio.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD AEROSPACE SERIES BS 4G 19

2、8-3:1999 ICS 49.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Sleeves and moulded components for aircraft electric cables and equipment wires Part 3: Specification for heat-shrinkable sleeving for binding, insulation, and identificationThis British Standard, having been

3、prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 December 1999 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment 98/707231

4、 DC ISBN 0 580 33097 4 BS 4G 198-3:1999 Amendments issued since publication Amd. No. Date Comments Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/6, Aerospace avionic, electrical and fibre optic technology, upon whic

5、h the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Manufacturers Assocaition Civil Aviation Authority (Airworthiness Division) Federation of the Electronics Industry Ministry of Defence Society of British Aerospace CompaniesBS 4G 198-3:1999 BSI

6、 12-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Normative references 1 3 Information to be supplied by the purchaser 5 4 Materials and characteristics 5 5 Colour 5 6 Finish 5 7 Dimensions 5 8 Shelf life 11 9 Type testing 11 10 Production routine and quality

7、 testing 12 11 Tests and requirements for finished sleeving 14 12 Tests and requirements for identification sleeves 35 13 Marking and packaging 36 Annex A (informative) Storage recommendations 37 Annex B (normative) Method for the determination of smoke index 37 Annex C (normative) Method for the de

8、termination of combustion products index 42 Bibliography 45 Figure 1 Test configuration for flammability test 32 Figure 2 Mandrel for restricted shrinkage test 34 Figure 3 Disposition of characters on identification sleeving 35 Figure B.1 Schematic details of burner for smoke index test 38 Figure B.

9、2 Schematic front view of smoke test piece holder, showing vertically mounted sleeving samples 39 Table 1 Types of heat-shrinkable sleeving 2 Table 2 Materials and characteristics 2 Table 3 Standard colours and availability 4 Table 4 Dimensions of types 10A and 10B sleeving 6 Table 5 Dimensions of t

10、ype 11A sleeving 6 Table 6 Dimensions of type 11B sleeving 7 Table 7 Dimensions of type 11C sleeving 8 Table 8 Dimensions of type 12A sleeving 8 Table 9 Dimensions of type 12B sleeving 9 Table 10 Dimensions of type 13 sleeving 9 Table 11 Dimensions of type 15 sleeving 10 Table 12 Standard cutting to

11、lerances for cut lengths of sleeving 11 Table 13 Type tests 12 Table 14 Production routine tests 12 Table 15 Production quality tests 13 Table 16 List of test fluids 33 Table 17 Mandrel for restricted shrinkage test 34 Table 18 Size and repetition of characters 36 Table 19 Allocation of numerals to

12、sleeve colours 36ii BSI 12-1999 BS 4G 198-3:1999 Foreword This part of BS G 198 has been prepared by Technical Committee ACE/6 and specifies requirements for heat-shrinkable sleeves and sleeving for aircraft electric cables and insulated equipment wires. BS G 198 is published in the following separa

13、te parts. Part 1: Specification for elastomeric sleeves for binding and identification; Part 2: Specification for slip-on sleeves for identification purposes; Part 3: Specification for heat-shrinkable sleeving for binding, insulation, and identification; Part 4: Specification for fluoropolymer heat-

14、shrinkable sleeving for binding and insulation; Part 5: Specification for heat-shrinkable moulded shapes. It is envisaged that there will be a further part on heat-shrinkable dual wall sleeves. (This work has been transferred to IEC SC15C WG5.) This part of BS G 198 supersedes BS 3G 198-3:1994 which

15、 is withdrawn. This part of BS G 198 specifies requirements for heat-shrinkable sleeving, in a range of diameters, lengths and materials for binding, insulation and identification purposes on electric cables and insulated equipment wires in aircraft. Sleeves are available as uncoloured transparent a

16、nd in a range of colours. The various types of sleeving covered by this British Standard have been designated by the allocation of type numbers. These numbers have been adopted by the aircraft industry over a period of years and do not necessarily run consecutively through the parts of BS G 198. Sle

17、eving should be installed in accordance with the manufacturers or the suppliers instructions and, in particular, it should be noted that when shrinkage is restricted some properties may be impaired, e.g. wall thickness will be reduced, and sleeving life may also be reduced. It should be noted that t

18、he majority of heat guns available for the application of sleeving are not for use in potentially explosive atmospheres. Application tools for the installation of heat-shrinkable sleeving in these areas should be designed for Zone 2 areas in accordance with BS 5345-2. BSI 12-1999 iii BS 4G 198-3:199

19、9 This edition deletes types 11D and 14 and removes the requirement for a test for durability of marking. WARNING NOTE 1 This standard calls for the use of substances and/or test procedures that may be injurious to health if adequate precautions are not taken. It refers only to technical suitability

20、 and in no way absolves either the supplier or the user from statutory obligations relating to health and safety at any stage of manufacture or use. WARNING NOTE 2 It should be clearly understood that the combustion characteristics tests detailed in this standard, i.e. flammability, oxygen index, fl

21、ammability temperature, smoke index and combustion products index are in no way suitable for assessing a total fire hazard situation. They are solely for the purpose of specifying the basic quality requirements of the heat-shrinkable sleeving. A British Standard does not purport to include all the n

22、ecessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pag

23、es 1 to 45 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.iv blank BSI 12-1999 1 BS 4G 198-3:1999 1 Scope This part of BS G 198 specifies the design, performance, quality assurance and methods of test for the types of heat-shrinkable

24、 sleeving shown in Table 1 and Table 2. These sleeves are for binding, insulation and identification purposes. Routine and quality tests are also specified. These sleeves may be used in both aerospace and non-aerospace applications. When specified, sleeves used with bonding adhesives and/or heat-shr

25、inkable moulded shapes should conform to the compatibility test requirements detailed in part 5. In addition to the definitive requirements, this standard also requires the items detailed in clause 3 to be documented. For compliance with this standard, both the definitive requirements and the docume

26、nted items have to be satisfied. NOTE 1 Recommendations for the storage of finished sleeves is given in annex A. NOTE 2 The latest revision of an Aerospace Series standard is indicated by a prefix number. NOTE 3 Sleeving that has been shrunk is referred to as recovered. 2 Normative references The fo

27、llowing normative documents contain provisions which, through reference in this text, constitute provisions of this part of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of th

28、e publication referred to applies. BS 148:1999, Specification for unused insulating oils for transformers and switchgear. BS 903, Physical testing of rubber. BS 903-A1:1996, Determination of density. BS 903-A2:1995, Determination of tensile stress-strain properties. BS ISO 188:1998, Rubber, vulcaniz

29、ed or thermoplastic Accelerated ageing and heat resistance tests. BS 1595-1:1986, Specification for propan-2-ol (isopropyl alcohol). BS 2011-2.1J:1999, Environmental testing Tests Test J and guidance Mould growth. BS ISO 4589-2:1996, Plastics Determination of burning behaviour by oxygen index Ambien

30、t-temperature test. BS EN ISO 4589-3:1996, Plastics Determination of burning behaviour by oxygen index Elevated temperature test. BS 2782-3: Methods 320A to 320F:1976, Tensile strength, elongation and elastic modulus. BS 2782-4, Chemical properties. BS 2782-4: Method 430A to 430D:1983, Method 430A,

31、Determination of water absorption at 238C. Method 430B, Determination of water absorption at 23 C with allowance for water-soluble matter. Method 430C, Determination of boiling water absorption. Method 430D, Determination of boiling water absorption with allowance for water-soluble matter. BS 2782-5

32、: Method 540B:1982, Methods of exposure to laboratory light sources, (xenon arc lamp, enclosed carbon arc lamp, open-flame carbon arc lamp, fluorescent tube lamps). BS 6401:1983, Method for measurement, in the laboratory, of the specific optical density of smoke generated by materials. BS 2782-5: Me

33、thods 540D, E, F and G. BS 650:1992 Specification for corrosion inhibiting, engine cooling concentrate (“antifreeze”). BS 6746C:1993, Colour chart for insulation and sheath of electric cables. BS 3G 100, Specification for general requirements for equipment and indicating instruments for aircraft. BS

34、 3G 100-2, All equipment. BS 3G 100-2-3, Environmental conditions. BS 3G 100-2-3.12:1991, Fluid contamination. IEC 60216, Guide for the determination of thermal endurance properties of electrical insulating material. BS ISO 1817:1999 Rubber, vulcanized Determination of the effects of liquids.2 BSI 1

35、2-1999 BS 4G 198-3:1999 Table 1 Types of heat-shrinkable sleeving Type Guide to temperature range Exposure temperature Recommended minimum shrink temperature d and shrink ratio 8C 8C a a b b c c 10A 275 to 120 120 150 215 150 2:1 10B 275 to 120 120 150 215 120 2:1 11A 255 to 135 135 175 225 100 2:1

36、11B 255 to 135 135 175 225 120 2:1, 3:1, 4:1 11C 255 to 135 135 175 225 120 2:1 12A 255 to 200 200 250 300 175 2:1 12B 255 to 200 200 250 300 175 2:1 13 255 to 90 90 120 150 150 2:1 15 230 to 105 105 135 175 135 2:1, 3:1 a Temperature a is for a minimum of 10,000 h when assessing in accordance with

37、11.22. b Temperature b is for a minimum of 168 h when assessing in accordance with 11.15. c Temperature c is for a minimum of 4 h when assessing in accordance with 11.19. d The minimum shrink temperature is the minimum temperature at which full recovery occurs. Refer to the manufacturer/supplier for

38、 actual values. Table 2 Materials and characteristics Type Material Characteristics 10A Very flexible polymer This sleeving has very good flexibility, is flame retarded and has a thick wall for mechanical protection. It is for use as cable protection in areas where wiring is subject to contamination

39、 by aircraft fuels and hydraulic fluids. The standard available colours are black or red. 10B Flexible polymer This sleeving has good flexiblity, is flame retarded and has a thick wall for mechanical protection. It is for use as cable protection in areas where wiring is subject to occasional contami

40、nation by aircraft fuels and hydraulic fluids. The standard colour is black. 11A Very flexible polyolefin This sleeving has good flexibility, is flame retarded and will shrink at low temperatures. It is suitable where sensitive components and delicate wiring need protection from excessive heat durin

41、g shrinking. It is available in colours (see Table 3) and transparent. The transparent sleeving is not flame retarded. 11B Flexible polyolefin This sleeving is flexible and flame retarded. It is suitable for general purposes and is available with high shrink ratios (see Table 6). It is available in

42、colours (see Table 3) and transparent. The transparent sleeving is not flame retarded. 11C Semi-rigid polyolefin This sleeving is semi-rigid and flame retarded. It is suitable where strain relief and mechanical support are required. It is available in colours (see Table 3) and transparent. The trans

43、parent sleeving is not flame retarded. 12A Vinylidene fluoride co-polymer (low electric strength) a This sleeving has good flexibility, is flame retarded and has a thick wall for mechanical protection. It is for use in areas subject to prolonged contamination by aircraft fuel and fluids with the exc

44、eption of phosphate ester-based hydraulic fluids. It has low electric strength. The standard colour is black. BSI 12-1999 3 BS 4G 198-3:1999 Table 2 Materials and characteristics (continued) Type Material Characteristics 12B Vinylidene fluoride co-polymer (high electric strength) a This sleeving has

45、 good flexibility, is flame retarded and has a thick wall for mechanical protection, but is generally thinner than type 12A. It is suitable for use in areas subject to prolonged contamination by aircraft fuel and fluids with the exception of phosphate ester-based hydraulic fluids. It has high electr

46、ic strength. The standard colour is black. 13 Polychloroprene This sleeving has good flexibility, is flame retarded and has a thick wall for mechanical protection. It is suitable for use as general purpose cable protection. The standard colour is black. 15 Limited fire hazard flexible polymer This s

47、leeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. a

48、s cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. a Includes hexafluoropropylene or 1-hydropentafluoropropylene.4 BSI 12-1999 BS 4G 198-3:1999 Table 3 Standard colours and availability Type Black Red Yellow Blue White Green Brown Pink Viol

49、et Orange Grey Green and yellow stripes Available as transparent 1 0 AXX 1 0 BX 1 1 AXXXXXXXXXXXX 1 1 BXXXXXXXXXXXXX 1 1 CXXXXXXXXXXXX 1 2 AX 1 2 BX 1 3X 1 5XXXXXX Key X signifies available. signifies not available as standard. See clause 5. BSI 12-1999 5 BS 4G 198-3:1999 3 Information to be supplied by the purchaser The following information to be supplied by the purchaser shall be fully documented. For compliance with t