Iec 60794 3 21 2015

IEC 60794- 3- 21Edit io 2.0 2 15-1 Optical fibre cables – Part 3- 21: Out door cables – Product specification for opt ical self- support ing aerial t elecommunicat ion cables for use in

IEC 60794- 3- 21

Edit io 2.0 2 15-1

Optical fibre cables –

Part 3- 21: Out door cables – Product specification for opt ical self- support ing

aerial t elecommunicat ion cables for use in premises cabl ng

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Interntio l Eletr ote nicl Com isio

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IEC 60794- 3- 21

Edit io 2.0 2 15-1

Opt ical fibre cables –

Part 3- 21: Out door cables – Product specificat ion for optical self- supporting

aerial t elecommunicat ion cables for use in premises cabl ng

INT R NATIONA L

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CONTENTS

FOREWORD 3

1 Sco e 5

2 Normative ref eren es 5

3 General req irements

5 4 Partic lar req irements 6

4.1 General 6

4.2 En ironmental req irements – Temp rature c cl n 6

4.3 Tran mis ion req irements 6

4.3.1 At en ation of ca led f ibre 6

4.3.2 Fibre b n width req irements 7

4.3.3 Polarization mode disp rsion (PMD) req irements 7

Ta le 1 – Multimode maximum ca le aten ation co f f icient (dB/km) 6

Ta le 2 – Sin le-mode maximum ca le aten ation co f f icient (dB/km) 7

Ta le 3 – Minimum multimode f ibre b n width (MHz∙km) 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION

Part 3-21: Outdoor cables –

Product specification f or optical self -supporting aerial

telecommunication cables f or use in premises cabl ng

1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio c mprisin

al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote

intern tio al c -o eratio o al q e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic f i ld To

this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cif i atio s,

Te h ic l Re orts, Pu lcly Av ia le Sp cific tio s (PAS) a d Guid s (h re f ter refere to a “IEC

Pu lc tio (s)”) Th ir pre aratio is e tru te to te h ic l c mmite s; a y IEC Natio al Commite intere te

in th s bje t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n

n-g v rnme tal org niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely

with th Intern tio al Org niz tio for Sta d rdiz tio (ISO) in a c rd n e with c n itio s d termin d b

a re me t b twe n th two org niz tio s

2) Th formal d cisio s or a re me ts of IEC o te h ic l maters e pre s, a n arly a p s ible, a intern tio al

c n e s s of o inio o th rele a t s bje ts sin e e c te h ic l c mmite h s re re e tatio fom al

intere te IEC Natio al Commite s

3) IEC Pu lc tio s h v th form of re omme d tio s f or intern tio al u e a d are a c pte b IEC Natio al

Commite s in th t s n e Whie al re s n ble eforts are ma e to e s re th t th te h ic l c nte t of IEC

Pu lc tio s is a c rate, IEC c n ot b h ld re p n ible for th wa in whic th y are u e or f or a y

misinterpretatio b a y e d u er

4) In ord r to promote intern tio al u iformity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s

tra s are tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e

b twe n a y IEC Pu lc tio a d th c r e p n in n tio al or re io al p blc tio s al b cle rly in ic te in

th later

5) IEC its lf d e n t pro id a y ate tatio of c nformity In e e d nt c rtific tio b die pro id c nformity

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s rvic s c rie o t b in e e d nt c rtif i atio b die

6) Al u ers s o ld e s re th t th y h v th late t e itio of this p blc tio

7) No la i ty s al ata h to IEC or its dire tors, emplo e s, s rv nts or a e ts in lu in in ivid al e p rts a d

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oth r d ma e of a y n ture wh ts e er, wh th r dire t or in ire t, or f or c sts (in lu in le al fe s) a d

e p n e arisin o t of th p blc tio , u e of, or rela c u o , this IEC Pu lc tio or a y oth r IEC

Pu lc tio s

8) Ate tio is drawn to th Normativ refere c s cite in this p blc tio Us of th refere c d p blc tio s is

in is e s ble for th c re t a plc tio of this p blc tio

9) Ate tio is drawn to th p s ibi ty th t s me of th eleme ts of this IEC Pu lc tio ma b th s bje t of

p te t rig ts IEC s al n t b h ld re p n ible f or id ntifyin a y or al s c p te t rig ts

International Stan ard IEC 6 7 4-3-21 has b en pre ared by s bcommite 8 A: Fibres an

ca les, of IEC tec nical commit e 8 : Fibre o tic

This secon edition can els an re laces the f irst edition publ s ed in 2 0 This edition

con titutes a tec nical revision

This edition in lu es the f ol owin sig if i ant tec nical c an es with resp ct to the previou

edition:

a) ref eren e to ISO 2 7 2;

b) ref eren e to Fibre B6 (IEC 6 7 3-2-5 );

c) ref eren e to the OS2 Fibre as def i ed by ISO/IEC 1 8 1

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This stan ard s al b u ed in conju ction with IEC 6 7 4-1-1, IEC 6 7 4-1-2, IEC 6 7 4-3

The text of this stan ard is b sed on the f ol owin doc ments:

Ful inf ormation on the votin f or the a proval of this stan ard can b f ou d in the re ort on

votin in icated in the a ove ta le

This publcation has b en draf ted in ac ordan e with the ISO/IEC Directives, Part 2

A l st of al p rts in the IEC 6 7 4 series, publ s ed u der the general title Optic l fibre

c bles, can b fou d on the IEC we site

The commit e has decided that the contents of this publ cation wi remain u c an ed u ti

the sta i ty date in icated on the IEC we site u der "htp:/we store.iec.c " in the data

related to the sp cif i publ cation At this date, the publ cation wi b

• with rawn,

• re laced by a revised edition, or

A bi n ual version of this publ cation may b is ued at a later date

IMPORTANT – The 'colour in ide' logo on the cov r pa e of this publ c tion indic te

that it contains colours whic are consid re to be u ef ul f or the cor e t

understa ding of its conte ts Us rs s ould theref ore print this doc me t using a

colour printer

OPTICAL FIBRE CABLES –

Part 3-21: Outdoor cables –

Product specification f or optical self -supporting aerial

telecommunication cables f or use in premises cabl ng

This p rt of IEC 6 7 4 is a prod ct sp cif i ation It presents the detaied req irements

sp cif i to o tical self -s p ortin a rial telecommu ication ca les f or u e in premises ca l n

to en ure comp tibi ty with ISO/IEC 1 8 1 an ISO/IEC 2 7 2 The req irements of the

f ami y sp cifi ation IEC 6 7 4-3-2 an sectional sp cifi ation IEC 6 7 4-3 are a pl ca le to

ca les covered by this stan ard

The f olowin doc ments, in whole or in p rt, are normatively ref eren ed in this doc ment an

are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a pl es For

u dated ref eren es, the latest edition of the referen ed doc ment (in lu in an

IEC 6 7 3-2-10:2 1 , Optic l fibre − P art 2-10: P rod uct s e ific tio s – Se tio al

s e ific tio for c te ory A1 multimod e fibre

IEC 6 7 3-2-5 :2 12, Optic l fibre − P art 2-5 : P rod uct s e ific tio s − Se tio al

s e ific tio for cla s B sin le-mode fibre

IEC 6 7 4-1-1, Optic l fibre c bles – P art 1-1: Ge eric s e ificatio – Ge eral

IEC 6 7 4-1-2, Optic l fibre c ble – P art 1-2: Ge eric s e ificatio – Cro s refere c table

for o tic l c ble te t pro edure

IEC 6 7 4-3, Optic l fibre c ble – P art 3: Outdoor c ble – Se tio al s e ific tio

IEC 6 7 4-3-2 , Optic l fibre c ble − P art 3-20: Outdoor c ble − Famil s e ific tio for

ISO/IEC 1 8 1, I nformatio te h olo y − Ge eric c bln for c stomers premis s

ISO/IEC 2 7 2, I nformatio te h olo y − Ge eric c bln – I ndustrial premise

The ca le s al comply with the f ami y sp cif i ation, IEC 6 7 4-3-2 , an me t the

req irements whic are def i ed in it, in lu in req irements in the sectional sp cif i ation,

IEC 6 7 4-3

The o tical f ibre contained in ca les covered by this stan ard s al comply with one of the

f ol owin stan ard , an me t the normative req irements def i ed within them as a plca le:

• IEC 6 7 3-2-5 :2 12, An ex A (Sin le-mode f ibre category B1.1);

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• IEC 6 7 3-2-5 : 2 12, An ex C (Sin le-mode f ibre category B1.3);

• IEC 6 7 3-2-10:2 1 , An ex A (Multimode f ibre, s b-category A1a, 5 µm core diameter);

• IEC 6 7 3-2-10:2 1 , An ex B (Multimode f ibre, s b-category A1b, 6 ,5 µm core

diameter)

To en ure comp tibi ty with ISO/IEC 1 8 1 an ISO/IEC 2 7 2, o tical p rforman e level

req irements are presented in terms of the fol owin p rforman e clas if i ation codes:

• OS1 sin le-mode f ibre, category B1.1, B1.3, or B6;

• OS2 sin le-mode f ibre, category B1.3 or s b-category B6_a;

• OM1 multimode fibre, s b-category A1a or A1b;

• OM2 multimode fibre, s b-category A1a or A1b;

• OM3 multimode fibre, model A1a.2;

• OM4 multimode fibre, model A1a.3

NOT Th s c d s are informativ fom th p rs e tiv of th re uireme ts d f i e in IEC 6 7 4-3-2

4 Particular requireme ts

These req irements either def i e a sp cif i o tion relative to the req irements of

IEC 6 7 4-3-2 or def i e ad itional req irements

4.2 En ironme tal re uireme ts – Temperature c cl ng

The ca le s al me t the req irements of ISO/IEC 1 8 1 an ISO/IEC 2 7 2, with the

f ol owin values:

• TB1:+ 0 °C TB2: + 0 °C

4.3 Tra smis ion re uireme ts

4.3.1 At e uation of c ble f ibre

De en in on the f ibre typ , the at en ation co f f icient of the ca led f ibre s al b les than

the maximum values in Ta le 1 f or the multimode f ibres, an les than the maximum values in

Ta le 2 for sin le-mode f ibres – for the wavelen th l sted in the Ta le 1 column he din s

an in Ta le 2

Table 1 – Multimode ma imum c ble at e uation coef f icie t (dB/km)

Table 2 – Single-mode ma imum c ble at e uation coef f icie t (dB/km)

NOT IEC SC8 A h s re omme d d to ISO/IEC JTC1 SC2 to mo ify th re uireme ts f or OS1 a d OS2 fibre in

ISO/IEC 1 8 1 Th re uireme ts in Ta le 2 are c n iste t with th s re omme d tio s In th c s of OS1 fibre

in in talatio s s e ifie prior to ISO 1 8 1, in whic eith r B1.1 fibre is u e or if th B1 f i re ty e is u k own, th

1 3 3 nm re uireme t is n t a plc ble

4.3.2 Fibre ba dwidth re uireme ts

There are no b n width req irements on sin le-mode f ibres

For ca les containin multimode fibres, the u ca led f ibre s al b sp cif ied at one of

p rf orman e levels defi ed in Ta le 3 in terms of minimum b n width (MHz∙km), wavelen th,

an typ of me s rement

The f ibre typ an p rf orman e level s al b agre d b twe n c stomer an s p l er

Table 3 – Minimum multimode fibre ba dwidth (MHz∙km)

core

µm

IEC 6 7 3-2- 0, s b-c te ory

A1b

IEC 6 7 3-2- 0, s b-c te ory

A1b

4.3.3 Polarization mode dispersion (PMD) re uireme ts

Ca les containin sin le-mode fibres s al me t the PMD req irements of IEC 6 7 4-3

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