1、BRITISH STANDARD BS G250:1994 ISO2574:1994 Specification for Identification marking of electric cablesBSG250:1994 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comesintoeffect on 15October199
2、4 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment92/73423 DC ISBN 0 580 23268 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Engineering Sector Board (E/-) to Te
3、chnical Committee ACE/6, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Manufacturers Association Civil Aviation Authority (Airworthiness Division) Federation of the Electronics Industry Ministry of Defence Society of British Aeros
4、pace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSG250:1994 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative reference 1 3 Identification of cable 1 4 Marking of cores 1 5 Identification of cores of single-
5、 and multicore screened cables 2 6 Identification of cables by coloured threads 4 Figure 1 Arrangement of rings 4 Table 1 Cable size code 1 Table 2 Year of manufacture code 2 Table 3 Method1A 3 Table 4 Method1B 3 Table 5 Method1C 3 Table 6 Methods1A,1B and1C for greater than10cores 4 Table 7 Method2
6、 5 Table 8 Coloured threads for indication of year of manufacture 6 List of references Inside back coverBSG250:1994 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Engineering Sector Board and is identical with ISO2574:1994 Aircraft Electrical Cabl
7、es Identification marking published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard doe
8、s not of itself confer immunity from legal obligations. Cross-reference International Standard Corresponding British Standard ISO3166:1993 BS5374:1989 Specification for codes for the representation of names of countries (Identical) Summary of pages This document comprises a front cover, an inside fr
9、ont cover, pagesi andii, pages1 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BSG250:1994 BSI 12-1999 1 1 Scope This International Stand
10、ard specifies the way in which single-core, multi-core and coaxial cables used in the wiring of aircraft are to be marked as to type, size, origin, date, etc.in order to facilitate servicing, the investigation of faults and replacement, when necessary, with an equivalent cable. It also specifies the
11、 approved methods for the marking of cores. This International Standard supplements those relating to marking that already exist. It allows for the codification of manufacturers identities by individual countries. 2 Normative reference The following standard contains provisions which, through refere
12、nce in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the mos
13、t recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO3166:1993, Codes for the representation of names of countries. 3 Identification of cable 3.1 Because of variation in requirements for cable coverings, the minimu
14、m size of cable that can be marked will depend upon the overall diameter and should be stated in the national individual cable specification. The marking shall consist of a legend printed in green or in a contrasting colour to that of the covering, using characters of the size required by the nation
15、al standard, repeated at intervals of300mm 50mm, and containing the following information: name of cable or number of specification/standard, type and size (as specifiedin Table 1); country of origin in accordance with the alpha-2 code specified in ISO3166; manufacturer (one-letter code) in accordan
16、ce with a code prepared by the standards organization in the country of origin; year of manufacture (one- or two-letter code) as specified in Table 2. Table 1 Cable size code 3.2 Dashes shall be used to separate the name of the cable or the number of the specification/standard, the type and the size
17、. This information shall be clearly separated from the codes for the country of origin and the manufacturer by a space equivalent to eight characters. The codes for the country of origin and the manufacturer shall also be separated with a dash. EXAMPLE EN2266 003 006 _ _ _ _ _ _ _ _ DE R91 4 Marking
18、 of cores Marking of cores shall be carried out by the cable manufacturer according to cable type as specified in the following subclauses. 4.1 Single-core cables (without screen or without screen and jacket) The outer surface shall be marked in a permanent and legible manner. 4.2 Single-core cables
19、 (with screen and jacket) The outer jacket shall be marked in a permanent and legible manner. Nominal cross-sectional area Size code mm 2 EN AWG 0,15 0,25 0,4 0,6 1 1,2 2 3 5 5 9 14 22 34 42 53 68 85 107 001 002 004 006 010 012 020 030 050 051 090 140 220 340 420 530 680 850 107 26 24 22 20 18 16 14
20、 12 10 10 8 6 4 2 1 0 00 000 0000BSG250:1994 2 BSI 12-1999 Table 2 Year of manufacture code 4.3 Multicore cables (without jacket) The marking shall be carried out on: a) the white core if method1A is used (see Table 3 and Table 6); b) the blue or red core if method1B is used (seeTable 4 and Table 6)
21、; c) the red core if method1C is used (see Table 5 and Table 6); d) the white core if method2 is used (see Table 7); or e) any core if method3 is used (see5.2). 4.4 Multicore cables (with jacket or with screen and jacket) The marking shall be carried out optionally on the jacket or on: a) the white
22、core if method1A is used (see Table 3 and Table 6); b) the blue or red core if method1B is used (see Table 4 and Table 6); c) the red core if method1C is used (see Table 5 and Table 6); d) the white core if method2 is used (see Table 7); or e) any core if method3 is used (see5.2). 4.5 Coaxial cables
23、 The outer jacket shall be marked in a legible manner in green or white and shall include: a) the standard number of the coaxial cable; b) the country, manufacturer and year (see3.1). 5 Identification of cores of single- and multicore screened cables Cores of single- and multicore screened cables sh
24、all be identified using one of the methods described in5.1 to5.2. 5.1 Identification by colour The insulation of each core is coloured in accordance with method1A,1B or1C as specified in Table 3 to Table 6. 5.2 identification by numbers (method3) All cores in a multicore cable are numbered in natura
25、l sequence. The identification shall be printed in arabic numerals on the insulator of each core, the insulator being coloured white. 5.3 Identification by coloured rings (method2) Each core is identified, on its insulation, by coloured rings in accordance with Table 7 and Figure 1. Year of manufact
26、ure Code Year of manufacture Code Year of manufacture Code 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 J K L M N P R S T U V W X Y Z 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 AA AB AC AD AE 91 92 93 94 95 96 97 98 99 00 2001 2002 2003 2
27、004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15BSG250:1994 BSI 12-1999 3 Table 3 Method1A Table 4 Method1B Table 5 Method1C Number of cores in cable 1 2 3 4 5 6 7 8 9 10 White White White White White White White White White White Blue Blue Blue
28、 Blue Blue Blue Blue Blue Blue Orange Orange Orange Orange Orange Orange Orange Orange Green Green Green Green Green Green Green Red Red Red Red Red Red Black Black Black Black Black Yellow Yellow Yellow Yellow Violet Violet Violet Grey Grey Brown NOTEFor cables having more than10cores, see Table 6.
29、 Number of cores in cable 1 2 3 4 5 6 7 8 9 10 White Red Red Red Red Red Red Red Red Red Blue Blue Blue Blue Blue Blue Blue Blue Blue Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yellow Green Green Green Green Green Green Green White White White White White White Black Black Black Black Black Br
30、own Brown Brown Brown Orange Orange Orange Purple Purple Grey NOTEFor cables having more than10cores, see Table 6. Number of cores in cable 1 2 3 4 5 6 7 8 9 10 White Red Red Red Red Red Red Red Red Red Blue Blue Blue Blue Blue Blue Blue Blue Blue Yellow Yellow Yellow Yellow Yellow Yellow Yellow Yel
31、low Green Green Green Green Green Green Green Black Black Black Black Black Black Violet Violet Violet Violet Violet Orange Orange Orange Orange Brown Brown Brown Pink Pink Grey NOTEFor cables having more than10cores, see Table 6.BSG250:1994 4 BSI 12-1999 Table 6 Methods1A,1B and1C for greater than1
32、0cores 6 Identification of cables by coloured threads Multicore cables or single cables of cross-sectional area greater than14mm 2(AWG6) which cannot be marked by the manufacturer, for example, cables of irregular cross-section, shall be identified by coloured threads indicating year of manufacture
33、and manufacturer. The material and colour of the threads shall withstand the maximum operating temperature specified in the relevant cable standards. The colours of the threads shall be visible on the finished cables and shall conform to the specifications of6.1 and6.2. 6.1 Indication of year of man
34、ufacture Two coloured threads shall be used but shall not be stranded. Colours of the threads shall be as indicated in Table 8. 6.2 Indication of manufacturer The colour and number of threads shall be allocated on request by the different countries. Core number Colour Core number Colour Core number
35、Colour Insulation Stripe Insulation Stripe Insulation Stripe 11 12 13 14 15 16 17 18 19 Grey Grey Grey Grey Grey Grey Grey Grey Grey Red Blue Yellow Green Black Violet Orange Brown Pink 20 21 22 23 24 25 26 27 Red Red Red Red Red Red Red Red Blue Yellow Green Black Violet Orange Brown Pink 28 29 30
36、Blue Blue Blue Yellow Green Black NOTEWhere a second colour is required, this shall be in the form of a helical stripe approximately0,75mm wide applied with a lay length of approximately12times the core diameter. NOTE 1Each ring shall cover at least3/4 of the circumference. NOTE 2The wide rings shal
37、l be twice the width of the narrow rings. Figure 1 Arrangement of ringsBSG250:1994 BSI 12-1999 5 Table 7 Method2 Number of core in cable Ring group configuration Number of rings a 1 White None 2 2 narrow 3 3 narrow 4 4 narrow 5 5 narrow 6 6 narrow 7 7 narrow 8 1 wide 1 narrow 9 1 wide 2 narrow 10 1
38、wide 3 narrow NOTEColour of rings: Green. a See also Figure 1.BSG250:1994 6 BSI 12-1999 Table 8 Coloured threads for indication of year of manufacture Year 1st thread 2nd thread Year 1st thread 2nd thread 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989
39、1990 1991 1992 Brown Green Green Green Black Black White Blue Blue Blue Yellow Yellow Yellow Grey Grey Grey Violet Violet Violet Orange Orange Orange Red Black White Red White Red Red Black White Red Black White Red Black White Red Black White Red Black White Red 1993 1994 1995 1996 1997 1998 1999 2
40、000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Green Green Green Green Green Green Blue Blue Blue Blue Blue Brown Brown Brown Brown Yellow Yellow Yellow Grey Grey Orange Brown Brown Violet Orange Grey Yellow Brown Blue Violet Orange Grey Yellow Brown Violet Orange Gre
41、y Yellow Violet Orange Grey Violet Orange Violet Black WhiteBSG250:1994 BSI 12-1999 List of references See national foreword.BS G250:1994 ISO2574:1994 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandar
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