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1、BRITISH STANDARD BS G 250:1994 ISO 2574:1994 Specification for Identification marking of electric cables Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 This British Standard, having been prepared
2、 under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1994 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment 92/73423 DC ISBN 0 580 232
3、68 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Engineering Sector Board (E/-) to Technical Committee ACE/6, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Manufac
4、turers Association Civil Aviation Authority (Airworthiness Division) Federation of the Electronics Industry Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank Universi
5、ty, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 BSI 12-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Normative reference1 3Identification of cable1 4Marking of cores1 5Identification of cores of single- and multicore screen
6、ed cables2 6Identification of cables by coloured threads4 Figure 1 Arrangement of rings4 Table 1 Cable size code1 Table 2 Year of manufacture code2 Table 3 Method 1A3 Table 4 Method 1B3 Table 5 Method 1C3 Table 6 Methods 1A, 1B and 1C for greater than 10 cores4 Table 7 Method 25 Table 8 Coloured thr
7、eads for indication of year of manufacture6 List of referencesInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 ii BSI 12-1999 National foreword This British Standard has been prep
8、ared under the direction of the Engineering Sector Board and is identical with ISO 2574:1994 Aircraft Electrical Cables Identification marking published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provisions of a contr
9、act. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-reference International StandardCorresponding British Standard ISO 3166:1993BS 5374:1989 Specification for codes for the
10、representation of names of countries (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will
11、 be indicated in the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 BSI 12-19991 1 Scope This International Standard specifies the way in which single-c
12、ore, 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 approved methods for the marking of c
13、ores. 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 reference in this text, constitute provision
14、s 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 most recent edition of the standard indic
15、ated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 3166:1993, Codes for the representation of names of countries. 3 Identification of cable 3.1 Because of variation in requirements for cable coverings, the minimum size of cable that can be marked wi
16、ll 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 national standard, repeated at intervals of
17、 300 mm 50 mm, and containing the following information: name of cable or number of specification/standard, type and size (as specified in Table 1); country of origin in accordance with the alpha-2 code specified in ISO 3166; manufacturer (one-letter code) in accordance with a code prepared by the s
18、tandards 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. This information shall be clea
19、rly 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 EN 2266 003 006 _ _ _ _ _ _ _ _ DE R 91 4 Marking of cores Marking of cores sha
20、ll 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 (with screen and jacket) The
21、outer jacket shall be marked in a permanent and legible manner. Nominal cross-sectional area Size code mm2ENAWG 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 12 10 10 8 6 4 2 1 0 00 000 0000
22、 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 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 meth
23、od 1A is used (see Table 3 and Table 6); b) the blue or red core if method 1B is used (see Table 4 and Table 6); c) the red core if method 1C is used (see Table 5 and Table 6); d) the white core if method 2 is used (see Table 7); or e) any core if method 3 is used (see 5.2). 4.4 Multicore cables (wi
24、th jacket or with screen and jacket) The marking shall be carried out optionally on the jacket or on: a) the white core if method 1A is used (see Table 3 and Table 6); b) the blue or red core if method 1B is used (see Table 4 and Table 6); c) the red core if method 1C is used (see Table 5 and Table
25、6); d) the white core if method 2 is used (see Table 7); or e) any core if method 3 is used (see 5.2). 4.5 Coaxial cables 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 (see
26、3.1). 5 Identification of cores of single- and multicore screened cables Cores of single- and multicore screened cables shall be identified using one of the methods described in 5.1 to 5.2. 5.1 Identification by colour The insulation of each core is coloured in accordance with method 1A, 1B or 1C as
27、 specified in Table 3 to Table 6. 5.2 identification by numbers (method 3) All cores in a multicore cable are numbered in natural 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 (
28、method 2) Each core is identified, on its insulation, by coloured rings in accordance with Table 7 and Figure 1. Year of manufacture 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 19
29、87 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 2004 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 15 Licensed Copy: London South Bank University, London South Bank Univ
30、ersity, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 BSI 12-19993 Table 3 Method 1A Table 4 Method 1B Table 5 Method 1C 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 Blue Blue Blue Blue Blue Bl
31、ue 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 than 10 cores, see Table 6. Number of cores in cable
32、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 Brown Brown Brown Brown Oran
33、ge Orange Orange Purple Purple Grey NOTEFor cables having more than 10 cores, 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 Yellow Green Green Green Gr
34、een 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 than 10 cores, see Table 6. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35
35、:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 4 BSI 12-1999 Table 6 Methods 1A, 1B and 1C for greater than 10 cores 6 Identification of cables by coloured threads Multicore cables or single cables of cross-sectional area greater than 14 mm2 (AWG 6) which cannot be marked by the manufa
36、cturer, for example, cables of irregular cross-section, shall be identified by coloured threads indicating year of manufacture 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 thre
37、ads shall be visible on the finished cables and shall conform to the specifications of 6.1 and 6.2. 6.1 Indication of year of manufacture 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 a
38、nd number of threads shall be allocated on request by the different countries. Core number Colour Core number Colour Core number Colour InsulationStripeInsulationStripeInsulationStripe 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 B
39、rown 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 Blue Blue Blue Yellow Green Black NOTEWhere a second colour is required, this shall be in the form of a helical stripe approximately 0,75 mm wide applied with a lay length of a
40、pproximately 12 times the core diameter. NOTE 1Each ring shall cover at least 3/4 of the circumference. NOTE 2The wide rings shall be twice the width of the narrow rings. Figure 1 Arrangement of rings Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+
41、00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 BSI 12-19995 Table 7 Method 2 Number of core in cableRing group configurationNumber of ringsa 1WhiteNone 22 narrow 33 narrow 44 narrow 55 narrow 66 narrow 77 narrow 8 1 wide 1 narrow 9 1 wide 2 narrow 10 1 wide 3 narrow NOTEColour of rings: Green.
42、 a See also Figure 1. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 6 BSI 12-1999 Table 8 Coloured threads for indication of year of manufacture Year1st thread2nd threadYear1st thread2nd thread
43、1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 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
44、 White Red Black White Red Black White Red Black White Red 1993 1994 1995 1996 1997 1998 1999 2000 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 Bro
45、wn Brown Violet Orange Grey Yellow Brown Blue Violet Orange Grey Yellow Brown Violet Orange Grey Yellow Violet Orange Grey Violet Orange Violet Black White Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 2
46、50:1994 BSI 12-1999 List of references See national foreword. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:35:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS G 250:1994 ISO 2574:1994 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Instituti
47、on BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should
48、 make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers