Bsi bs au 197 1984 (2000)

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 3[.]

Specification for

U C 6 9.1 0 3.5:6 1.3 6.5 1

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Automo ile

Stan ards Commi e ,was

published u der the authoriy

ofthe Bo rd of BSI an comes

into fect on

3 J n ary1 8

© BSI0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/16

Draft for comment7 /77 4 DC

The prep ration of this BritishStand rd was entrusted b the Automobi e

Stand rds Commit e ( AUE/-) to Tech ical Commit e AUE/16 upon which the

fol owing bodies were represented:

Association of Traier Man facturer

Dep rtment of Transport

Electric Ca le Maker ’ Confederation

National Carav an Cou ci Limited

Society of Motor Man facturer and Tra er Limited

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

Fig ure 3 — Socket and plug as embly ( fre sp ce) 4

This BritishStand ard has be n prep red u der the direction of the Automobie

Stand ards Commit e It specifies requirements for24V ty pe N ( normal

electrical con ector betwe n towing v ehicles and traier and is b sed on

ISO1 8 :19 5 “R oa d vehicle — Ele tr ica l con e tons betwe n towing vehicle

a nd towed vehicle wih24Vele tr ica l equipment— Type24N (nor ma l) ,

publshed b the International Org anization for Stand ard ization ( ISO)

Con ector man factured in ac ord nce with this stand rd are inter hang ea le

with those mad e in ac ord nce with ISO1 8 , but the stand rd s are not

id entical

This stand ard d ifer fom ISO1 8 in that there is an ad ditional clause for

mounting the socket and plug as embly , an that perormance in ac ord nce with

BS19 is specified

A British Stand ard d oes not purport to includ e al the neces ary prov isions of a

contract User of British Stand rd s are responsible for their cor ect a plcation

Com pl anc with a British Standard does not ofitself confer im m unity

f om leg al o l g ations

Sum mary of pag es

This document comprises a f ont cov er, an insid e font cov er, p g esi andi ,

p g es1 to4, an inside b ck cov er and a b ck cov er

This stand rd has be n up ated ( se copy rig ht d ate) an ma hav e ha

amendments incorporated This wi l be indicated in the amendment ta le on the

inside f ont cov er

1 Scope

This BritishStand rd specifies req uirements for

sockets and plug s of ty pe24N which wi permit

electrical con ections betwe n towing v ehicles an

traier with24V electrical equipment

NOT 1 These sockets an plug s are not inter hang ea le wih

ty e 4S (sup lementary) sockets an plug s ( se BS AU1 8)

NOT 2 The t les of the publicatons refer ed to in this

stan ard are listed on the inside b ck co er

2 General

2.1 Num ber of contacts There shal be sev en

contacts, desig nated as folows

e common return;

f left-hand rear position and end -outlne

marker l g ht, and rear reg istration-plate

i uminating d ev ice;

g left-han direction- nd icator lg ht;

h stop lg hts;

i rig ht-hand d irection- nd icator l g ht;

j rig ht-hand rear position and end-outlne

marker l g ht, and rear reg istration-plate

i uminating d ev ice;

k braking control for trai er

The rear reg istration-plate i uminating dev ice shal

be connected in such a man er that no lamp of such

a dev ice has a common con ection with both

contacts f and j

2.2 Arrang em ent of contacts The ar ang ement

of contacts shal be as shown in Fig ure 1 and

Fig ure 2

2.3 Socket The socket shal be mou ted on the rear

of the towing v ehicle in the case of a roa train It

shal be mou ted on the semi traier in the case of

an articulated road train

The socket shal be prov ided with six contact

pins (f to k) and one larg er contact pin ( e)

All contacts shal be insulated

NOT After fi ing , contact ema b con ected to the

common return of the v ehicle

Each rear terminal shal be ca a le of receiv ing two

conductor of1.5mm

2

minimum c os section

The contact d esig nations shal be permanently

marked on the inside of the socket cov er an on the

terminal face in sy mbols not les than2mm hig h

NOT These symb ls, which ne d not b n mb r ,ma difer

fom those in icated in Fig ure 1, pro ided that the sp cified pin

locatons of the diferent fu ctons are complied wih

The socket shal be prov ided with a splashpro f

cov er which shal close automaticaly when the plug

is d iseng ag ed The hing ed cov er on the socket shal

be prov ided with a locking lug to retain the plug

when it is eng ag ed

All metal c p rts of the socket shal be ma e of

cor osion-resistant material or shal be protected

ag ainst cor osion

2.4 Plug The plug shal be mou ted on the trai er

in the case ofa roa train an on the towing v ehicle

in the case of an articulated roa train

The plug shal be prov id ed with six spring tubes

cor esponding to pins f to k and one larg er

spring tube cor esponding to pin e

The internal diameter of tubes f to k shal be

such that the cor espond ing pins of the socket can be

con ected with a moderate push, but they shal

ensure a g ood electrical contact

Each rear terminal shal be ca a le of receiv ing one

cond uctor of2.5mm

2

minimum c os section

The contact d esig nations shal be permanently

marked on the terminal face in sy mbols not les

than2mm hig h

NOT These sy mb ls, which ne d not b n mb r , ma difer

fom those in icated in Fig ure 2,pro ided that the sp cified pin

locatons of the diferent fu ctons are complied wih

It shal be impos ible to connect pin eto any of the

tubes f to k

All metal c p rts of the plug shal be ma e of

cor osion-resistant material or shal be protected

ag ainst cor osion

Means of fixing an sealng the ca le shal be

prov id ed

2.5 Allocation of ca le colour The ca le colour

of the sev en-core con ecting ca le shal be alocated

to the diferent cir uits as shown in Ta le 1

Ta le 1 — Allocation of cable colour

e

f

g

h

i

j

k

Common return

Left-hand rear position an

end-outl ne marker lg ht, and

rear reg istration-plate

i uminating d ev ice

Left-hand

d irection- nd icator l g ht

Stop l g hts

Rig ht-hand

d irection- nd icator l g ht

Rig ht-han rear position and

end-outl ne marker lg ht, and

rear reg istration-plate

i uminating d ev ice

Braking control for traier

W hite

Black

Yel ow

Red

Gre n

Brown

Blue

2.6 Disting uishing marking A d rk and

permanent colour, prefera ly black, shal be used

for at least the insulating p rts of the24N

con ector, to disting uish it f om the24S con ector

NOT BS AU1 8 sp cifies that the 4S con ector is a lig ht

an p rmanent colour

2.7 Dimensions for socket and plug The

d imensions for the socket and plug shal be as g iv en

in Fig ure 1 and Fig ure 2 The clearance dimensions

arou d the socket and plug as embly shal be as

shown in Fig ure 3

The location of the socket and plug as embly on the

towing v ehicle shal be as specified in BS AU19

3 Performance

The con ector shal comply with BS AU19

All dimensions in milimetres

NOT The n mb r desig natng contacts cor esp n to those g iv en in2.1

Fig ure 1 — Socket

All dimensions in milimetres.

NOT 1 The n mb r desig natng contacts cor esp n to those g iv n in2.1

NOT 2 For clarificaton of terminal n mb ring se Fig ure 1

Fig ure 2 — Plug

All dimensions in milimetres.

N T The ang le of4 °ma e ten s ac os the ful horizontal fe sp ce

Fig ure 3 — Socket and plug as em bly (f e spac )

Publica tions referred to

BS AU19 , Spe ifica tion f r per for ma nc o ele tr ica l con e tons betwe n towing vehicle a nd tr a iler s

BS AU19 , Spe ifica tion f r mou tng ele tr ica l con e t ons on r ea r cr os member s o towing vehicle

BS AU19 , Spe ifica tion fr ele tr ica l con e tons betwe n towing vehicle a nd tr a iler s wi h24Vele tr ica l

equipment: type24S (sup lementa r y)

ISO1 8 , R oa d vehicle — Ele tr ica l con e tons betwe n towing vehicle a nd towed vehicle wi h24V

ele tr ica l equipment— Type24N (nor ma l)

1)

1)

Refered to in the foreword only

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