BS-AU-88A-1985.pdf
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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 88a:1985 (Superseding BS AU 88:1965) Recommendations for ratings for light duty cables for automobile use UDC 629.113.066:621.315.3.021 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:46 GMT+00:00 2006, Uncontrolled
2、 Copy, (c) BSI BS AU 88a:1985 This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on 28 June 1985 BSI 02-2000 The following BSI references relate to the work on this standar
3、d: Committee reference AUE/16 Draft for comment 84/71812 DC ISBN 0 580 14507 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/-) to Technical Committee AUE/16, upon which the following bodies were rep
4、resented: Association of Trailer Manufacturers Department of Transport (Highways) Electric Cable Makers Confederation National Caravan Council Limited Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank
5、 University, London South Bank University, Sat Dec 09 01:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 88a:1985 BSI 02-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Recommended ratings1 Appendix A Guidance for designers2 Figure 1 Increase or decrease in ra
6、ting with temperature3 Table 1 Recommended ratings for single cables for automobile use1 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 88a:1985 ii BSI 02-2000 Foreword This British Standard has been pre
7、pared under the direction of the Automobile Standards Committee. It is a revision of BS AU 88:1965, which is withdrawn. BS AU 88:1965 calculated the current rating of a cable on the basis of a current density factor which was used as a multiplier with the nominal conductor cross-sectional area. This
8、 approach did not take into account various insulating materials which are used in present day cables, which give the possibility of similar conductor sizes being run at different temperatures depending upon the thermal rating of the insulation material. The recommendations in this edition permit th
9、e user to rate a cable according to the end use and the thermal performance of the insulation. 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 does
10、not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in
11、the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 88a:1985 BSI 02-20001 1 Scope This British Standard gives recommendations for nominal current ratings of ligh
12、t duty cables for automobile use for conductor sizes in the range 0.3 mm2 to 10 mm2 based on a temperature rise of 30 C in the conductor. NOTEAttention is drawn to Appendix A which gives guidance for designers. 2 Recommended ratings The recommended current ratings for single cables are given in Tabl
13、e 1. Table 1 Recommended ratings for single cables for automobile use Nominal cross-sectional area Number and diameter of wires Maximum resistance at 20 C (plain copper) Nominal current rating mm2 0.3 Strands/mm 7/0.23 m7/m 64.1 A 7.0 0.57/0.3 16/0.2 19/0.19 37.1 39.0 34.6 11.0 11.0 11.0 0.659/0.329
14、.313.0 0.7524/0.2 19/0.23 26.0 23.6 14.0 14.0 1.032/0.2 14/0.3 19/0.26 19.5 18.84 18.5 16.5 16.5 16.5 1.521/0.3 19/0.32 12.6 12.0 21.0 21.0 2.028/0.3 19/0.37 9.42 8.95 25.0 25.0 2.535/0.3 19/0.41 7.54 7.29 29.0 29.0 3.0 3.0 4.0 4.0 4.5 6.0 7.0 8.5 10.0 37/0.32 44/0.3 56/0.3 37/0.37 65/0.3 84/0.3 97/
15、0.3 120/0.3 80/0.4 6.15 6.0 4.71 4.60 4.06 3.14 2.72 2.2 1.82 33.0 33.0 39.0 39.0 42.0 50.0 55.0 63.0 70.0 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:46 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 88a:1985 2 BSI 02-2000 Appendix A Guidance for de
16、signers A.1 Nominal current rating gives a rise in temperature of 30 C above ambient in free air. Increases or decreases in rating due to variations in ambient temperature, or use of insulants with higher temperature capabilities may be determined from Figure 1. A.2 In order that the maximum conduct
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