1、BRITISH STANDARD AUTOMOBILE SERIES BSAU198: 1984 Specification for Electrical connections between towing vehicles and trailers with24V electrical equipment: type24S (supplementary) UDC 629.11.013.5:621.316.541BSAU198:1984 This BritishStandard, having been prepared under the directionof the Automobil
2、e Standards Committee, was published under the authority ofthe Board of BSI and comesintoeffect on 31January1984 BSI 02-2000 The following BSI references relate to the work on this standard: Committee referenceAUE/16 Draft for comment79/72184DC ISBN 0 580 13549 7 Committees responsible for this Brit
3、ishStandard The preparation of this BritishStandard was entrusted by the Automobile Standards Committee(AUE/-) to Technical Committee AUE/16 upon which the following bodies were represented: Association of Trailer Manufacturers Department of Transport Electric Cable Makers Confederation National Car
4、avan Council Limited Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No. Date of issue CommentsBSAU198:1984 BSI 02-2000 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 General 1 3 Performance 1 Figure 1 Socket 2 Figure 2 P
5、lug 3 Figure 3 Socket and plug assembly (free space) 4 Table 1 Allocation of cable colours 1 Publications referred to Inside back coverBSAU198:1984 ii BSI 02-2000 Foreword This BritishStandard has been prepared under the direction of the Automobile Standards Committee. It specifies requirements for2
6、4V type S (supplementary) electrical connectors between towing vehicles and trailers and is based on ISO3731:1980 “Road vehicles Electrical connections between towing vehicles and trailers with24V electrical equipment Type24S(supplementary)”, published by the International Organization for Standardi
7、zation (ISO). Connectors manufactured in accordance with this standard are interchangeable with those made in accordance with ISO3731, but the standards are not identical. This standard differs from ISO3731 in that contact f is designated as failure warning and contact j is designated as switched po
8、wer supply, to make provisions for the method preferred in the UnitedKingdom for wiring trailer brake antilock systems. Performance in accordance with BSAU194 is also specified. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are
9、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, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has b
10、een updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BSAU198:1984 BSI 02-2000 1 1 Scope This BritishStandard specifies requirements for sockets and plugs of type24S which will permit electrical connections
11、between towing vehicles and trailers with24V electrical equipment. NOTE 1These sockets and plugs are not interchangeable with type24N (normal) sockets and plugs (seeBSAU197). NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 General 2.1 Number o
12、f contacts. There shall be seven contacts designated as follows: e common return; f failure warning; g reversing light; h power supply; i sensing device with common return; j switched power supply; k rear fog light. 2.2 Arrangement of contacts. The arrangement of contacts shall be as shown inFigure
13、1 and Figure 2. 2.3 Socket. The socket shall be mounted on the rear of the towing vehicle in the case of a road train. It shall be mounted on the semi-trailer in the case of an articulated road train. The socket shall be provided with six contact pins(f to k) and one spring tube(e) corresponding to
14、pin e of the plug. All contacts shall be insulated. NOTEAfter fitting, contact e may be connected to the common return of the vehicle. The internal diameter of tube e shall be such that the corresponding pin of the plug can be connected with a moderate push, but it shall ensure a good electrical con
15、tact. Each rear terminal shall be capable of receiving two conductors of1.5mm 2 minimum cross section. The contact designations shall be permanently marked on the inside of the socket cover and on the terminal face in symbols not less than2mm high. NOTEThese symbols, which need not be numbers, may d
16、iffer from those indicated inFigure 1, provided that the specified pin locations of the different functions are complied with. The socket shall be provided with a splashproof cover which shall close automatically when the plug is disengaged. The hinged cover on the socket shall be provided with a lo
17、cking lug to retain the plug when it is engaged. All metallic parts of the socket shall be made of corrosion-resistant material or shall be protected against corrosion. 2.4 Plug. The plug shall be mounted on the trailer in the case of a road train and on the towing vehicle in the case of an articula
18、ted road train. The plug shall be provided with six spring tubes corresponding to pins f to k, and one contact pin(e). The internal diameter of tubes f to k shall be such that the corresponding pins of the socket can be connected with a moderate push, but they shall ensure a good electrical contact.
19、 Each rear terminal shall be capable of receiving one conductor of2.5mm 2 minimum cross section. The contact designations shall be permanently marked on the terminal face in symbols not less than2mm high. NOTEThese symbols, which need not be numbers, may differ from those indicated inFigure 2, provi
20、ded that the specified pin locations of the different functions are complied with. All metallic parts of the plug shall be made of corrosion-resistant material or shall be protected against corrosion. Means of fixing and sealing the cable shall be provided. 2.5 Allocation of cable colours. The cable
21、 colours of the seven-core connecting cable shall be allocated to the different circuits as shown inTable 1. Table 1 Allocation of cable colours 2.6 Distinguishing marking. A light and permanent colour shall be used for at least the insulating parts of the24S connector, to distinguish it from the24N
22、 connector. NOTEBS AU197 specifies that the24N connector is a dark and permanent colour, preferably black. 2.7 Dimensions for socket and plug. The dimensions for the socket and plug shall be as shown inFigure 1 andFigure 2. The clearance dimensions around the socket and plug assembly shall be as sho
23、wn inFigure 3. The location of the socket and plug assembly on the towing vehicle shall be as in BSAU195. 3 Performance The performance of connectors shall comply withBSAU194. Contact Circuit Cable colour e f g h i j k Common return Failure warning Reversing light Power supply Sensing device with co
24、mmon return Switched power supply Rear fog light White Black Yellow Red Green Brown BlueBSAU198:1984 2 BSI 02-2000 All dimensions in millimetres. NOTEThe numbers designating contacts correspond to those given in2.1. Figure 1 SocketBSAU198:1984 BSI 02-2000 3 All dimensions in millimetres. NOTE 1The n
25、umbers designating contacts correspond to those given in2.1. NOTE 2For clarification of terminal numbering seeFigure 1. Figure 2 PlugBSAU198:1984 4 BSI 02-2000 Horizontal free space (see note) All dimensions in millimetres. NOTEThe angle of45max. extends across the full horizontal free space. Figure
26、 3 Socket and plug assembly (free space)BSAU198:1984 BSI 02-2000 Publications referred to BS AU194, Specification for performance of electrical connections between towing vehicles and trailers. BS AU195, Specification for mounting electrical connections on rear cross members of towing vehicles. BS A
27、U197, Specification for electrical connections between towing vehicles and trailers with24V electrical equipment: type24N (normal). ISO3731, Road vehicles Electrical connections between towing vehicles and trailers with24V electrical equipment: type24S (supplementary) 1) . 1) Referred to in the fore
28、word only.BSAU198: 1984 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisio
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