Bsi bs au 198 1984 (2000)

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[.]

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

comesinto fect on

3 J n ary1 8

© BSI 0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commi e referenceAUE/16

Draft for comment7 /72 8 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 folowing 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 req uirements for24V ty pe S ( sup lementary )

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

ISO3 31:19 0 “R oa d vehicle — Ele tr ica l con e tons betwe n towing vehicle

a nd tr a iler s wih24Vele tr ica l equipment— Type24S(sup lementa r y) ”,

publshed b the International Org anization for Stand rdization ( 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 ISO3 31, but the stand rd s are not

id entical

This stand ard d ifer fom ISO3 31 in that contact f is d esig nated as faiure

warning and contact j is desig nated as switched power sup ly , to make

prov isions for the method prefer ed in the UnitedKingd om for wiring traier

brake antiock sy stems Per ormance in ac ord nce with BSAU19 is also

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

1 Scope

This BritishStand rd specifies req uirements for

sockets and plug s of ty pe24S 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 4N (normal sockets an plug s ( se BSAU1 7)

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 fol ows:

e common return;

f fai ure warning ;

g rev er ing l g ht;

h power sup ly ;

i sensing dev ice with common return;

j switched power sup ly ;

k rear fog lg ht

2.2 Arrang em ent of contacts The ar ang ement

of contacts shal be as shown inFig 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 spring tube( e)

cor esponding to pin e of the plug

All contacts shal be insulated

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

common return of the v ehicle

The internal diameter of tube e shal be such that

the cor espond ing pin of the plug can be con ected

with a moderate push, but it shal ensure a g ood

electrical contact

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

conductor of1.5mm

2

minimum c os section

The contact desig nations shal be permanently

marked on the inside of the socket cov er and 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 inFig 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 ic p rts of the socket shal be mad 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, an one contact

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 desig 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 inFig ure 2,pro ided that the sp cified pin

locatons of the diferent fu ctons are complied wih

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 inTa le 1

Ta le 1 — Allocation of cable colour

2.6 Disting uishing m arking A l g ht and

permanent colour shal be used for at least the

insulating p rts of the24S con ector, to

disting uish it f om the24N con ector

NOT BS AU1 7 sp cifies that the2 N con ector is a dark

an p rmanent colour,prefera ly black

2.7 Dimensions for socket and plug The

dimensions for the socket an plug shal be as

shown inFigure 1 andFig ure 2 The clearance

dimensions aroun the socket an plug as embly

shal be as shown inFig ure 3

The location of the socket and plug as embly on the

towing v ehicle shal be as in BSAU19

3 Per ormance

The per ormance of con ector shal comply

withBSAU19

Ca le

colour

e

f

g

h

i

j

k

Common return

Faiure warning

Rev er ing lg ht

Power sup ly

Sensing d ev ice with common return

Switched power sup ly

Rear fog lg ht

W hite

Black

Yel ow

Red

Gre n

Brown

Blue

All dimensions in milimetres.

N T The n mb r desig natng contacts cor esp n to those g iv n 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

Horizontal fe sp ce ( se note)

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: type24N (nor ma l)

ISO3 31, R oa d vehicle — Ele tr ica l con e t ons betwe n towing vehicle a nd tr a iler s wih24Vele tr ica l

equipment: type24S (sup lementa r y)

1)

1)

Refered to in the foreword only

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