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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 198: 1984 Specification for Electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 S (supplementary) UDC 629.11.013.5:621.316.541 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 0
2、9 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 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 31 January 1984 BSI 02-2000 The following BSI ref
3、erences relate to the work on this standard: Committee reference AUE/16 Draft for comment 79/72184 DC ISBN 0 580 13549 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
4、 upon which the following bodies were represented: Association of Trailer Manufacturers Department of Transport Electric Cable Makers Confederation National Caravan Council Limited Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No.Date of issueComments Li
5、censed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 BSI 02-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2General1 3Performance1 Figure 1 Socket2 Figure 2 Plug3 Figure
6、 3 Socket and plug assembly (free space)4 Table 1 Allocation of cable colours1 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 ii BSI 02-2000 Foreword Th
7、is British Standard has been prepared under the direction of the Automobile Standards Committee. It specifies requirements for 24 V type S (supplementary) electrical connectors between towing vehicles and trailers and is based on ISO 3731:1980 “Road vehicles Electrical connections between towing veh
8、icles and trailers with 24 V electrical equipment Type 24 S (supplementary)”, published by the International Organization for Standardization (ISO). Connectors manufactured in accordance with this standard are interchangeable with those made in accordance with ISO 3731, but the standards are not ide
9、ntical. This standard differs from ISO 3731 in that contact f is designated as failure warning and contact j is designated as switched power supply, to make provisions for the method preferred in the United Kingdom for wiring trailer brake antilock systems. Performance in accordance with BS AU 194 i
10、s also specified. 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 not of itself confer immunity from legal obligations. Summary of pages This d
11、ocument comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, 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. Licensed
12、 Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 BSI 02-20001 1 Scope This British Standard specifies requirements for sockets and plugs of type 24 S which will permit electrical connections between towin
13、g vehicles and trailers with 24 V electrical equipment. NOTE 1These sockets and plugs are not interchangeable with type 24 N (normal) sockets and plugs (see BS AU 197). NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 General 2.1 Number of cont
14、acts. 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 in Figure 1 and
15、 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 pin
16、 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 contac
17、t. Each rear terminal shall be capable of receiving two conductors of 1.5 mm2minimum 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 than 2 mm high. NOTEThese symbols, which need not be numbers, may di
18、ffer from those indicated in Figure 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
19、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
20、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
21、. Each rear terminal shall be capable of receiving one conductor of 2.5 mm2minimum cross section. The contact designations shall be permanently marked on the terminal face in symbols not less than 2 mm high. NOTEThese symbols, which need not be numbers, may differ from those indicated in Figure 2, p
22、rovided 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 c
23、able colours of the seven-core connecting cable shall be allocated to the different circuits as shown in Table 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 the 24 S connector, to distinguish it from
24、 the 24 N connector. NOTEBS AU 197 specifies that the 24 N 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 in Figure 1 and Figure 2. The clearance dimensions around the socket and plug assembly s
25、hall be as shown in Figure 3. The location of the socket and plug assembly on the towing vehicle shall be as in BS AU 195. 3 Performance The performance of connectors shall comply with BS AU 194. ContactCircuit Cable colour e f g h i j k Common return Failure warning Reversing light Power supply Sen
26、sing device with common return Switched power supply Rear fog light White Black Yellow Red Green Brown Blue Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 2 BSI 02-2000 All dimensions in millime
27、tres. NOTEThe numbers designating contacts correspond to those given in 2.1. Figure 1 Socket Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 BSI 02-20003 All dimensions in millimetres. NOTE 1The
28、numbers designating contacts correspond to those given in 2.1. NOTE 2For clarification of terminal numbering see Figure 1. Figure 2 Plug Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198:1984 4 BSI 02-2
29、000 Horizontal free space (see note) All dimensions in millimetres. NOTEThe angle of 45 max. extends across the full horizontal free space. Figure 3 Socket and plug assembly (free space) Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Un
30、controlled Copy, (c) BSI BS AU 198:1984 BSI 02-2000 Publications referred to BS AU 194, Specification for performance of electrical connections between towing vehicles and trailers. BS AU 195, Specification for mounting electrical connections on rear cross members of towing vehicles. BS AU 197, Spec
31、ification for electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 N (normal). ISO 3731, Road vehicles Electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 S (supplementary)1). 1) Referred to in the forewor
32、d only. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 198: 1984 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing
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