Bsi bs au 232 1989 (2000) iso 8854 1988

BRITISH STANDARD AUTOMOBILE SERIES BS AU 232 1989 ISO 8854 1988 Methods of test and general requirements for road vehicle alternators with regulators BS AU 232 1989 This British Standard, having been[.]

ISO 8854:1988

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Automo ile

Stan ards Policy Commi e ,

waspublished u der the

authoriyof the Bo rd of BSI

an comes into efect on

2 Se temb r 1 8

© BSI 0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/16

Draft for comment8 /70 6 DC

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

Stand rds Pol cy Commit e ( AUE/-) to Tech ical Commit e AUE/16, upon

which the fol owing bod ies were represented :

Association of Traier Man facturer

British Ca le Maker ’ Confed eration

Dep rtment of Transport ( Hig hway s)

Dep rtment of Transport ( Transport and Roa Resear h La oratory )

Institution of Electronic and Rad io Eng ine r

National Carav an Cou ci Ltd

Society of Motor Man facturer and Tra er Ltd

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

National foreword

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

Stand ards Pol cy Commit e and is identical with ISO8 5 :19 8 “ R oa d

vehicle — A lter na tor s wi h r egula tor s — Te t method s a nd gener a l

r equir ements”, publ shed b the International Org anization for Stand rd ization

( ISO)

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 a b ck cov er

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

1 Scope and field ofappl cation

This International Stand rd specifies test methods

an g eneral req uirements for the determination of

the electrical characteristic d ata of alternator for

road v ehicles

It a ples to alternator , co led ac ording to the

man facturer’s instructions, mounted on internal

combustion eng ines

2 Definitions

For the purposes of this International Stand rd , the

fol owing d efinitions a ply

2.1

test v ltag e, U

t

specified v alue, in v olts, at which the cur ent

measurements shal be car ied out

2.2

cut- in f equency, n

A

alternator rotational f equency , which is the

n mber of rev olutions div ided b time, in minutes to

the power min s one, at which it beg ins to sup ly

cur ent when f eq uency is inc eased for the fir t

time This d epends on pre-exciting power ( input),

f eq uency chang ing v elocity , b t ery v oltag e an

residual flux density of the rotor

2.3

zero- am p f equency, n

0

alternator rotational f eq uency , in min tes to the

power min s one, at which it reaches the specified

test v oltag e U

t

without any cur ent output

( thepoint where the cur ent feq uency

characteristic I=f(n) inter ects the a s is a)

2.4

m inimum a pl cation f equency, n

L

alternator rotational f eq uency , in min tes to the

power min s one, which cor espond s a proximately

to the idlng f eq uency of the eng ine This rotational

f eq uency is set at15 0min

–1

for the purpose of

this specification

2.5

rated f equency, n

R

alternator rotational f eq uency , in min tes to the

power min s one, at which it sup les its rated

cur ent I

the rated feq uency is specified as n

R

=60 0min

–1

2.6

m inim um a pl cation cur ent, I

L

cur ent, in amperes, which is delv ered b the

alternator at test v oltag e U

t and at f eq uency

n

L

=15 0min

–1

2.7

rated cur ent, I

minimum cur ent, in amperes, which the alternator

shal sup ly at a f eq uency n

R

=60 0min

–1

and at

test v olta e U

t

2.8

maxim um cur ent, I

ma

cur ent, in amperes, which the alternator sup les

at ma imum contin ous fequency ( as d efined b

the alternator man facturer) and at test v oltag e U

t

3 Test conditions

The tests shal be car ied out at a ro m temperature

of23±5°C wherev er pos ible A temperature

d ev iating f om this rang e shal be record ed

The reference point for record ing co lng air

temperature shal be at5cm f om the air intake of

the alternator

The d irection of alternator rotation shal be as

indicated b the man facturer

In the measuring cir uit, a b t ery an an

a justa le resistor R shu ted to the b t ery are

used ( se Fig ure 1 and Fig ure 2)

The tests shal be conducted using a fuly charg ed

lea -acid b t ery of the cor ect nominal v oltag e

hav ing a nominal ca acity of not les than5 % of

the rated cur ent I

, ex res ed in ampere-hour

The ov eral ca a i ty of the test eq uipment shal

alow p rameter measurements within the

tolerances shown in the Ta le

Ta le

All measurements of cur ent shal be car ied out b

ad justing the loa resistor R to maintain a constant

test v oltag e U

t

The measurements shal be car ied out with

integ ral or sep rate reg ulator

To prev ent the reg ulator working , measurements

shal be ma e at the folowing test v oltag es:

13,5±0,1V for1 V sy stems;

27±0,2 V for24V sy stems

4 Test equipment connection dia g ram

For alternator tests, con ections shal be mad e in

ac ord nce with Fig ure 1

Param ete

A ccuracy

%

Voltag e

Cur ent

Torque

Rotational feq uency

±0,3

±0,5

±2

±1

The v oltmeter shal be connected d irect to the

alternator power output terminals

The con ecting ca les used shal be a eq uate for the

output of the alternator u der test In the case of a

sep rate reg ulator, their leng ths shal be record ed

5.1 Cur ent/rotational f equency

characteristic

5.1.1 Warm te t s

5.1.1.1 R ota tiona l fr equencie a nd mea sur ing points

Cur ent measurement shal be taken at the

folowing rotational f eq uencies ( i min tes to the

power min s one); the temperature of the stator

shal be alowed to reach equi brium at each

ind iv idual f equency before cur ent v alues are

record ed :

2 A-rotational feq uency( ë 10 0)–15 0–

2 0 0–25 0–30 0–35 0–40 0–50 0–

60 0–90 0–1 0 0–n

ma

The cur ent/rotational fequency characteristic is

ind icated b the fol owing fiv e points:

a) Cut-n fequency , n

A

Inc ease the alternator rotational f equency

unti the charg e indicator sy stem ind icates the

commencement of b t ery charg ing , and record

this f eq uency

The v alue of charg e indicator influences the

cut- n f eq uency and its v alue shal be ag re d

betwe n the alternator man facturer and the

v ehicle man facturer

b) Zero-amp f eq uency , n

0

( i directmeasurement)

Reduce the alternator rotational f eq uency u ti

an alternator output cur ent betwe n5% of I

and2A, but not les than2A, is reached Recor d

feq uency an cur ent for g ra hic d etermination

of the z ro-amp f eq uency : i.e.the z ro-amp

spe d is determined b extension of the

cur ent/ rotational f eq uency characteristic u ti

the a s is a is inter ected

This g ra hic extra olation shal be mad e after

completing the measurements

c) Minimum a plcation cur ent, I

L

Ad just the alternator rotational feq uency to

n

L

=15 0min

–

, and record the alternator

output cur ent ( d efined as being the minimum

a pl cation cur ent I

L )

d ) Rated cur ent, I

Ad just the alternator rotational feq uency to

n

R

=60 0min

–

, and record the alternator

output cur ent ( d efined as being the rated

cur ent I )

e) Ma imum cur ent, I

ma

Ad just the alternator rotational feq uency to

n

ma

as specified b the alternator man facturer,

and record the alternator output cur ent

( d efinedas being the ma imum cur ent I

ma )

5.1.1.2 Cha r a cter istc o power a bsor bed

(d r ivepower ) a nd eficiency

The power a sorbed b the alternator shal be

calculated at the measuring points shown in5.1.1.1

I so desired,the eficiency of the alternator ma be

calculated an record ed

Fig ure 1 — Diag ram for alternator testing

5.1.2 Sho t f rm te ts

5.1.2.1 Shor t f r m wa r m te t

The alternator u d er test shal be warmed up

for3 min at30 0min

–

It is howev er permis ible

to red uce this time if it can be shown that the

temperature which would be reached after3 min

has be n at ained in a shorter period The v oltag e

shal be constant and eq ual to the test v oltag e U

t

during the warm-up and the measuring period

After the warm-up period, the rotational f eq uency

shal be reduced u ti the cur ent is betwe n2A

and0,0 I Record cur ent an rotational

f equency

Cur ent measurements shal be taken at least at the

folowing rotational f eq uency v alues ( in minutes to

the power min s one):

1 5 0–2 0 0–30 0–40 0–60 0–90 0–

1 0 0–n

ma

I so d esired, further intermed iate v alues ma be

record ed

The test time shal not ex ce d3 s, with constant

v ariation of f eq uency

5.1.2.2 Shor t f r m cold te t

Cur ent measurements shal be taken at least at the

fol owing rotational f equency v alues ( in minutes to

the power min s one):

2 A-rotational f equency–15 0–20 0–

30 0–40 0–60 0–90 0–1 0 0–n

ma

I so desired , further intermediate v alues ma be

recorded

The test time shal not exce d3 s with constant

v ariation of f equency

5.2 Testing offunctional a i ity of reg ulator

The alternator shal be ru at rated rotational

f equency and rated cur ent unti the temperature

of the reg ulator becomes sta le.The loa shal then

be red uced to5A and a check ma e to determine

that the v oltag e do s not rise a ov e the alternator

v oltag e specified b the alternator man facturer

NOT The set ng of the reg ulator is sp cific to the v hicle

man facturer

6 Presentation ofr sults

Measurements of cur ent/rotational feq uency and

power a sorption characteristic shal be presented

in ac ord nce with Fig ure 2

The tests d es ribed in5.1.1 and5.1.2 wi l produce

d iferent characteristic curv es an therefore

d iferent ma imum cur ent v alues The

man facturer shal indicate which test method has

be n used

Fig ure 2 — Presentation of results

ISO 8854:1988

BSI

3 9 Chiswick Hig h Roa

London

W 4 4AL

BSI is the independent national bod y responsible for prep ring

BritishStand ard s It presents the UK v iew on stand ard s in Europe an at the

international lev el It is incorporated b Roy al Charter

Revisions

BritishStand ards are up ated b amendment or rev ision User of

BritishStand ard s should make sure that they pos es the latest amendments or

editions

It is the constant aim of BSI to improv e the qual ty of our products and serv ices

W e would be g rateful if any one find ing an inac uracy or ambig uity whi e using

this BritishStand rd would inform the Sec etary of the technical commit e

responsible, the identity of which can be fou d on the inside f ont cov er

Tel:0208 9 9 0 Fa :0208 9 7 0

BSI ofer member an indiv id ual up ating serv ice caled PLUS which ensures

that subs riber automaticaly receiv e the latest editions of stand rds

Buying standards

Order for al BSI, international an foreig n stand ard s publcations should be

a d res ed to Customer Serv ices Tel:0208 9 9 01 Fa :0208 9 7 01

In response to ord er for international stand rd s, it is BSI pol cy to sup ly the

BSI implementation of those that hav e be n publ shed as BritishStand rds,

unles otherwise requested

Inform ation on standards

BSI prov id es a wide rang e of information on national, European and

international stand rds throug h its Library and its Tech ical Help to Ex orter

Serv ice Various BSI electronic information serv ices are also av aia le which g iv e

d etais on al its prod ucts an serv ices Contact the Information Centre

Tel:0208 9 71 1 Fa :0208 9 7 4

Subs ribing member of BSI are kept up to d te with stand rd s dev elopments

and receiv e substantial d is ou ts on the pur hase price of stand rds For d etai s

of these and other benefits contact Member hip Ad ministration

Tel:0208 9 7 02 Fa :0208 9 7 01

Co yrig ht

Copy rig ht subsists in al BSI publcations BSI also holds the copy rig ht, in the

UK, of the publcations of the international stand ardization bod ies Except as

permit ed u der the Cop rig ht, Desig ns and Patents Act 19 8 no extract ma be

reproduced , stored in a retriev al sy stem or transmit ed in any form or b any

means – electronic, photocopy ing , recording or otherwise – without prior writ en

permis ion fom BSI

This do s not preclude the fe use, in the cour e of implementing the stand ard,

of neces ary detai s such as sy mbols, and siz , ty pe or g ra e d esig nations I these

d etais are to be used for any other purpose than implementation then the prior

writ en permis ion of BSI must be obtained

I permis ion is g ranted, the terms ma includ e roy alty p y ments or a lcensing

ag re ment Detais and a v ice can be obtained f om the Copy rig ht Manag er

Tel:0208 9 7 7