BRITISH STANDARD AUTOMOBILE SERIES BS AU 194 1984 Specification for Performance of electrical connections between towing vehicles and trailers UDC 629 11 013 5 621 316 541 BS AU 194 1984 This British[.]
BRITISH STANDARD AUTOMOBILE SERIES Specification for Performance of electrical connections between towing vehicles and trailers UD C 62 1 : 62 41 BS AU 194:1984 BS AU 194:1984 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/- ) to Technical Committee AUE/1 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 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 984 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/1 Draft for comment 77/73236 DC ISBN 580 13542 X Amendments issued since publication Amd No Date of issue Comments BS AU 194:1984 Contents Page Committees responsib le Foreword ii Scope Performance Appendix A Tests Pub lications referred to © BSI 02 - 000 Inside front cover Inside back cover i BS AU 94 : 984 Fore word This British Standard has been prepared under the direction of the Automobile “Road vehicles — Electrical connections between towing vehicles and trailers — Test methods and requirements”, published by the International Organization for Standardization Standards Committee It is based on ISO 4091 : 978 (ISO) It is expected that in due course ISO 4091 will be revised and aligned with this British Standard This standard includes requirements for vibration, durability, and resistance to ingress of dust and water, and a reduced insertion force between plug and socket These not appear in ISO 4091 at present 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 C omp liance with a British S tand ard d oe s no t of itse lf confe r immunity from le gal ob ligatio ns S ummary of p age s This document comprises a front cover, an inside front cover, pages i and ii, pages 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 ii © BSI 02- 2000 BS AU 94 : 984 c) mV/A if the terminals in both plug and socket are not readily accessible When tested as described in , the insulation between the contacts and between each contact and the case shall withstand 000 V r.m.s (50 Hz or 60 Hz) for S cop e This British Standard specifies requirements for performance of electrical connections between towing vehicles and trailers It applies to electrical connections type 24 N and 24 S, used for vehicles fitted with electrical equipment operating at a nominal voltage of 24 V, and type 12 N and 12 S, used for vehicles fitted with When tested as described in , electrical equipment operating at a nominal voltage the connector shall show no visible cracks or of 12 V These are specified in BS AU 197, deformation and shall not exceed the values BS AU 198, BS AU 149a and BS AU 177a specified in , and respectively When tested as NOTE The titles of the publications referred to in this standard are listed on the inside back cover described in , the increase in maximum voltage drop shall be no higher than 50 % above the values specified in When When tested as described in , the degree of measured as described in , the insertion force protection against ingress of dust shall be IP5X, as shall be 150 N maximum The withdrawal force given in BS 5490 When tested as described shall be 20 N to 150 N , the degree of protection against ingress of When tested as in water shall be the second characteristic numeral 4, described in , each contact, but not more than as given in BS 5490 two adjacent contacts simultaneously, one being the When tested as common return, shall be capable of carrying 15 A d.c continuously for h, without the described in , there shall be no cracks in the components and they shall not exceed the values temperature of the contacts rising by more specified in and by more than 50 % than 20 °C above the ambient temperature When tested as described in , When tested as described in , the connector shall not exceed the values specified the maximum voltage drop shall be: in and by more than 50 % a) mV/A and 0.5 mV/A respectively, if all the terminals are readily accessible; b) 5.5 mV/A and 0.5 mV/A respectively, if the terminals in either the plug or the socket are not readily accessible; C ontact insulation A Ab ility to withstand e xtre me te mp e rature s 2.1 A 2.3 2.4 C orrosio n re sistance A Pe rformance 2.3 Re sistance to ingre ss of d ust and wate r Inse rtion and withdraw al force s A A A C urre nt carrying cap acity A 2 Vib ratio n re sistance A 2.1 Voltage drop A D urab ility 2.1 © BSI 02-2000 2.3 A 2.3 BS AU 94 : 984 Ap p e ndix A A Flash te st Tests The flash test shall be carried out on plug and socket separately The ambient temperature shall be 23 ± °C The relative humidity shall The insertion and withdrawal forces shall be be 65 ± % Measure the insulation between the measured between plug and socket of the same contacts and between each contact and the case, make The ambient temperature shall be 23 ± °C when metallic, for capability to The pins and tubes shall be dry and clean Measure withstand 000 V r.m.s (50 Hz or 60 Hz) the insertion and withdrawal by a static test (dead for weight method) at the tenth cycle of insertion and withdrawal The cover shall be disengaged Subject the connector to the following temperature cycle: The ambient temperature shall be 23 ± °C a) initial temperature of + 23 ± °C; Connections to the terminals shall be insulated b) high temperature of + 70 ± °C for 15 min; cables of 1.5 mm2 cross section and m minimum c) low temperature of – 25 ± °C for 15 length After the contacts have carried 15 A d.c continually for h, measure the temperature of After completion of the temperature cycle, subject each contact at the terminals of both tube and pin, the connector to the tests described in , as close as possible to the insulation and A Me asure me nt of inse rtion and withd rawal force s A D e te rmination of ab ility to withstand e xtre me te mp e rature s A D e te rmination of curre nt carrying cap acity A A A A Vo ltage d rop te st The voltage drop between the pins and the corresponding tubes shall be measured between plug and socket of the same make, at the tenth insertion, according to either , or as appropriate The ambient temperature shall be 23 ± °C Provided that all terminals on the connector are readily accessible, e.g that connecting cables are not moulded into either the socket or the plug, measure the following voltage drops, with a current of up to 10 A: a) between the terminals of each pin and its corresponding tube; b) between each terminal and a point 10 mm from the terminal on a connecting conductor of 1.5 mm2 cross-sectional area If the terminals in either the plug or the socket, but not both, are not readily accessible, e.g if a cable is moulded in, measure the following voltage drops, with a current of up to 10 A: a) between each accessible terminal, and a point on the conductor connected to its corresponding pin or tube 100 mm from the face of the plug or socket; b) between each accessible terminal and a point 10 mm from the terminal on a connecting conductor of 1.5 mm2 cross-sectional area If the terminals in both plug and socket are not readily accessible, e.g if cables are moulded in, measure the voltage drops between each pair of corresponding conductors at points on the cables 100 mm from the faces of the plug and the socket, with a current of up to 10 A A A A A A A A C orrosio n te st This test shall be carried out in accordance with BS 5466-1 The test time shall be 48 h Carry out the test on: a) plug and socket mated and positioned as mounted on the vehicle with cable side covered; b) socket with cover closed and positioned as mounted on the vehicle and with cable side covered After having cleaned and dried the mated plug and socket as specified in BS 5466-1, carry out the test described in A A D e te rmination of re sistance to ingre ss o f dust and wate r Carry out the tests described in and on: a) a plug and socket mated; b) a socket with the cover closed In each case, position the items as mounted on the vehicle The cable entry shall be fitted with a boot, if it is normally provided with one, and a short length of cable Carry out the test as described in of BS 5490:1977 A A General A A Resis tance to ingress of dust 7.5 A © BSI 02-2000 BS AU 94 : 984 A Resistance to ingress of water Carry out the Subj ect the components to sinusoidal vibrations in test as described in BS 5490, but with the following each of the three perpendicular planes for h amendments Carry out the initial test along the central axis g There shall be a constant acceleration of Change a) The water pressure shall be increased to 400 kN/m (4 bar 1) ) approximately (see of BS 5490: 977) b) The radius of the oscillating tube shown the frequency from Hz to 50 Hz and 50 Hz to Hz during each The change of frequency shall be made progressively in Figure of BS 5490: 977 may be increased, A D urab ility te st but it shall be provided with spray holes The plug and socket, of the same make, shall of mm diameter over the whole 80 ° of the complete 000 cycles of insertions and semicircle and shall be capable of delivering withdrawals water at the rate of at least L/min c) The specimen being tested shall be mounted on a support with a vertical axis and located at approximately the centre point of the semicircle formed by the oscillating tube It shall be sprayed from every direction by oscillating the tube to the limit in each direction at a rate of approximately 90 °/s for A Vib ration te st Mount the mated plug and socket on a fixture using the designed fixing points, with the central axis horizontal Both the plug and socket shall include a typical length of cable The cables shall be positively restrained to a separate fixture m from the plug and 300 mm from the socket 1) bar = N/m = 00 kPa © BSI 02- 2000 blank BS AU 194:1984 Publications referred to BS 5466, Methods for corrosion testing of metallic coatings BS 5466- , BS 5490, Neutral salt spray test (NSS test) Specification for classification of degrees of protection provided by enclosures Specification for electrical connections between towing vehicles and trailers with V or V electrical equipment: type 12 N (normal) BS AU 49a, Specification for electrical connections between towing vehicles and trailers with V or V electrical equipment: type 12 S (supplementary) BS AU 77a, BS AU 97, Specification for electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 N (normal) BS AU 98, Specification for electrical connections between towing vehicles and trailers with 24 V electrical equipment: type 24 S (supplementary) ISO 4091 , Road vehicles — Electrical connections between towing vehicles and trailers — Test methods and requirements ) 2) Referred to in the foreword only © BSI 02 - 000 BS AU 194:1984 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the identity of which can b e found on the inside front cover Tel: 02 89 96 90 00 Fax: 02 89 96 40 BS I offers memb ers an individual up dating s ervice called PLUS which ens ures that s ub s crib ers automatically receive the lates t editions of s tandards Buying standards O rders for all BS I, international and foreign s tandards p ub lications s hould b e addres s ed to C us tomer S ervices Tel: 899 00 Fax: 899 7001 In res p ons e to orders for international standards , it is BS I p olicy to sup p ly the BS I imp lementation of thos e that have b een p ub lis hed as Britis h S tandards, unless otherwis e requested Information on standards BS I p rovides a wide range of information on national, E urop ean and international standards through its Lib rary and its Technical H elp to E xp orters S ervice Various BS I electronic information s ervices are also availab le which give details on all its p roducts and s ervices C ontact the Information C entre Tel: 02 89 96 71 1 Fax: 02 89 96 048 S ub s crib ing memb ers of BS I are kep t up to date with s tandards develop ments and receive sub s tantial discounts on the p urchase p rice of s tandards For details of thes e and other b enefits contact Memb ership Adminis tration Tel: 02 89 96 70 02 Fax: 02 89 96 00 Copyright C op yright s ub s is ts in all BS I p ub lications BS I als o holds the cop yright, in the UK, of the p ub lications of the international s tandardization b odies E xcep t as p ermitted under the C op yright, D es igns and Patents Act 988 no extract may b e rep roduced, s tored in a retrieval s ystem or transmitted in any form or b y any means – electronic, p hotocop ying, recording or otherwis e – without p rior written p ermis s ion from BS I This does not p reclude the free us e, in the cours e of imp lementing the standard, of necess ary details such as s ymb ols, and size, typ e or grade designations If thes e details are to b e used for any other p urp os e than imp lementation then the p rior written p ermiss ion of BS I must b e ob tained If p ermis sion is granted, the terms may include royalty p ayments or a licensing agreement D etails and advice can b e ob tained from the C op yright Manager BS I 89 C his wick H igh Road London W4 4AL Tel: 02 89 96 70