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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 197:1984 Specification for Electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 N (normal) UDC 629.11.013.5:621.316.541 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:57:
2、51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 197:1984 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 01-2000 The following BSI references
3、relate to the work on this standard: Committee reference AUE/16 Draft for comment 74/77643 DC ISBN 0 580 13547 0 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 wh
4、ich 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 Licensed C
5、opy: London South Bank University, London South Bank University, Sat Dec 09 01:57:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 197:1984 BSI 01-2000i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2General1 3Performance2 Figure 1 Socket2 Figure 2 Plug3 Figure 3 Socke
6、t 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 197:1984 ii BSI 01-2000 Foreword This Briti
7、sh Standard has been prepared under the direction of the Automobile Standards Committee. It specifies requirements for 24 V type N (normal) electrical connectors between towing vehicles and trailers and is based on ISO 1185:1975 “Road vehicles Electrical connections between towing vehicles and towed
8、 vehicles with 24 V electrical equipment Type 24 N (normal)”, published by the International Organization for Standardization (ISO). Connectors manufactured in accordance with this standard are interchangeable with those made in accordance with ISO 1185, but the standards are not identical. This sta
9、ndard differs from ISO 1185 in that there is an additional clause for mounting the socket and plug assembly, and that performance in accordance with BS 194 is specified. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsi
10、ble 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, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been
11、updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front 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 197:1984 BSI
12、 01-20001 1 Scope This British Standard specifies requirements for sockets and plugs of type 24 N which will permit electrical connections between towing vehicles and trailers with 24 V electrical equipment. NOTE 1These sockets and plugs are not interchangeable with type 24 S (supplementary) sockets
13、 and plugs (see BS AU 198). NOTE 2The titles of the publications referred to in this standard are listed on the inside back cover. 2 General 2.1 Number of contacts. There shall be seven contacts, designated as follows. e common return; f left-hand rear position and end-outline marker light, and rear
14、 registration-plate illuminating device; g left-hand direction-indicator light; h stop lights; i right-hand direction-indicator light; j right-hand rear position and end-outline marker light, and rear registration-plate illuminating device; k braking control for trailers. The rear registration-plate
15、 illuminating device shall be connected in such a manner that no lamp of such a device has a common connection with both contacts f and j. 2.2 Arrangement of contacts. The arrangement of contacts shall be as shown in Figure 1 and Figure 2. 2.3 Socket. The socket shall be mounted on the rear of the t
16、owing 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 larger contact pin (e). All contacts shall be insulated. NOTEAfter fitting, contact e may be connected to t
17、he common return of the vehicle. Each rear terminal shall be capable of receiving two conductors of 1.5 mm2 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 than 2 mm high. NOTEThese symbols, wh
18、ich need not be numbers, may differ 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 soc
19、ket shall be provided with a locking 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 veh
20、icle in the case of an articulated road train. The plug shall be provided with six spring tubes corresponding to pins f to k and one larger spring tube corresponding to 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 modera
21、te push, but they shall ensure a good electrical contact. Each rear terminal shall be capable of receiving one conductor of 2.5 mm2 minimum 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 b
22、e numbers, may differ from those indicated in Figure 2, provided that the specified pin locations of the different functions are complied with. It shall be impossible to connect pin e to any of the tubes f to k. All metallic parts of the plug shall be made of corrosion-resistant material or shall be
23、 protected against corrosion. Means of fixing and sealing the cable shall be provided. 2.5 Allocation of cable colours. The cable 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 ContactCircuitCable colou
24、r e f g h i j k Common return Left-hand rear position and end-outline marker light, and rear registration-plate illuminating device Left-hand direction-indicator light Stop lights Right-hand direction-indicator light Right-hand rear position and end-outline marker light, and rear registration-plate
25、illuminating device Braking control for trailers 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 197:1984 2 BSI 01-2000 2.6 Distinguishing marking. A dark and perma
26、nent colour, preferably black, shall be used for at least the insulating parts of the 24 N connector, to distinguish it from the 24 S connector. NOTEBS AU 198 specifies that the 24 S connector is a light and permanent colour. 2.7 Dimensions for socket and plug. The dimensions for the socket and plug
27、 shall be as given in Figure 1 and Figure 2. The clearance dimensions around the socket and plug assembly shall be as shown in Figure 3. The location of the socket and plug assembly on the towing vehicle shall be as specified in BS AU 195. 3 Performance The connectors shall comply with BS AU 194. Al
28、l dimensions in millimetres. 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 197:1984 BSI 01-20003 All dimensions in m
29、illimetres. NOTE 1The 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
30、AU 197:1984 4 BSI 01-2000 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, Uncontrolled
31、Copy, (c) BSI BS AU 197:1984 BSI 01-2000 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 198, Specification f
32、or electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 S (supplementary). ISO 1185, Road vehicles Electrical connections between towing vehicles and towed vehicles with 24 V electrical equipment Type 24 N (normal)1). 1) Referred to in the foreword only
33、. 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 197:1984 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British
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