As 3766-1990 Mechanical Fittings For Low Voltage Aerial Bundled Cables

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AS 3766—1990

 .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

Australian Standard󰂮 Mechanical fittings for low voltage aerial bundled cables

 

This Australian Standard was prepared by Committee EL/10, Overhead Lines. It was ap appro prove ved d on beha behalf lf of the Coun Counci cill of Stan Standar dards ds Aus Austral tralia ia on 21 Ma March rch 1990 1990 and published on 16 July 1990.

The following interests are represented on Committee EL/10:  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

Australian El ectrical an and d El ectronic M Manufac anufacturers turers Association Australian Porcelain Insulators Association Confederation of Australian Industry Electrical and Radio Federation of Victoria Electricity Electrici ty Supp Supply ly Association Association of Aust Australia ralia Railwayss of Australia Commi Railway Committee ttee

 Review of Austr alia n Standa rds.   To keep abreast abreast of progress progress in industry, industry, Australian Standards are subject  to periodic periodic review review and are kept kept up to date by the i ssu ssuee of amend amendment mentss or new editions as nece necessa ssary. ry. It is important impor tant t herefore herefore t hat Standar Standards ds users users ens ensure ure that they are in possession possession of the latest edition, and any amendmentss thereto. amendment Full Full details details of all Australian Australian Standard Standardss and related publications publications wil l be found in t he Standa Standards rds Aust Australia ralia Cat Catalogue alogue of Publications; Publications; t his information information is supplemen supplemented ted each month by the magazin magazinee ‘The Austra Australian lian Standar Stan dard’, d’, which subscrib subscribing ing member memberss receive, receive, and which which gives details of new publica publications, tions, new editions and amendments, amendments, and of withdrawn Standa Standards rds.. Suggestions for improvements t o Australian Standards, Suggestions Standards, addressed addressed to the hea head d office of Standa Standards rds Australia, are welcomed. Notification of any inaccuracy or ambiguity found in an Australian Standard should be made withoutt delay in order withou order that the matter may be investigated investigated and appr appropr opriate iate action taken taken..

This Standard was issued in draft form for comment as DR 89068.

 

AS 3766—1990

 .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i

Australian Standard󰂮 Mechanical fittings for low voltage aerial bundled cables

First published as AS 3766—1990.

   i   s    h    T

PUBLISHED BY STANDARDS STANDARDS OF AUSTRALIA (STANDARDS ASSOCIATION AUSTRALIA) 1 THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 0 7262 6113 0

 

AS 3766—1990

 

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PREFACE This Standard was prepared by the Standards Australia Committee on Overhead Lines with the close coo coopera peration tion of r epre epresenta sentatives tives f rom the Electr Electricity icity Supply Supply Assoc Association iation of Australia Australia and Australian Australian manufacturer manufacturerss of overhe overhead ad powe powerr line fittings. The Standard sets out perf performan ormance ce and gen general eral requiremen requirements ts for fitting fittingss designed designed specifically for use with the insulated aerial cables, manufactured to AS 3560,  Electric ca cabl bles es — Aerial Aerial bund bundled led — Voltage Voltagess up to and inc includ luding ing 0.6/ 0.6/1 1 kV . The particular fittings covered by this Standard are as follows: (a) Strain Strain cclam lamps ps.. (b) Tensio Tension n joi joints nts.. (c) Suspensio Suspension n clamp clamps. s. (d) Pole fitti fittings ngs..

 .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

󰂩   Copyright Copyright

STAN STANDARDS DARDS AUSTRAL AUSTRALIA IA

Users of Standards Users Standards are reminded reminded that copyright copyright subsi subsists sts in all Standa Standards rds Austr Australia alia publica publications tions and sof software. tware. Except Except whe where re the Copyright Cop yright Act all allows ows and exc except ept where provid provided ed for below no publ publication icationss or software software prod produce uced d by Stan Standar dards ds Australia Australia may be rep reprod roduc uced ed,, st store ored d in a retrieva retrievall syst system em in an any y form or transm transmitt itted ed by an any y means means withou withoutt prior prior permiss permission ion in writing writing from Standards Standa rds Australia. Permission Permission may be conditional on an appropriate royalty payment payment.. Requests Requests f or permiss permission ion and inform ation on commercial software royalties should be directed to the head office of Standards Australia. Sta Standa ndards rds Australia Australia will permit up t o 10 percent percent of the techn technical ical conten contentt pages pages of a Sta Standa ndard rd to be cop copied ied for use exclusively in-house by purchasers exclusively purchasers of the Standard without payment of a royalty or advice t o Standards Standards Australia. Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royalty payment payme nt provided such programs are used exclusively exclusively in-house by the creators of the programs. Care Care should should be taken taken to ensur ensuree that mate material rial use used d is from the current current edit edition ion of t he Standard Standard and that it i s updated updated wheneve wheneverr the Standard Standa rd is amended amended or revised. The number number and date date of the Standard should t herefore be clearly clearly i dentified. The use of material material in print form or in com computer puter sof software tware programs programs to be used commercia commercially, lly, with or without without payment, payment, or in commercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any time.

 

 

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AS 3766—1990

CONTENTS Page

SECTIO SEC TION N 1 SCOPE SCOPE AND GENERAL GENERAL 1.1 SC SCO OPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 1.2 RE REFE FER RENCE ENCED DD DOC OCUM UMEN ENTS TS . . . . . . . . . . . . 1.3 DEFI FIN NITIONS . . . . . . . . . . . . . . . . . . . . . . . . 1.4 1.4 GE GENE NERA RAL L REQ REQUI UIRE REME MENT NTS S . . . .. . . .. . .. 1.5 1.5 1.6 1.6 1.7 1.8

 .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

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GE GENE NERA RAL L REQ REQUI UIRE REME MENT NTS S FOR FOR T TES ESTS TS . . . . . . . . . . . . . . . . . . . DI DIME MENS NSIO IONS NS AND T TO OLERA LERANC NCES ES . . . . . . . . . . . . . . . . . . . . . . . . CABLE PARAMETER ERS S . . . .. . . .. . .. . . .. . . . .. . . . .. . . . .. . MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTIO SEC TION N 2 STRAIN STRAIN CLAMPS CLAMPS 2.1 DESI SIG GN . . . . . . . . . . . . . . . . . 2.2 CLAMPIN ING G TO TO CA CABLE . . . . . 2.3 ASSEMB EMBLY . . . . . . . . . . . . . . 2.4 INS INSULATI LATIO ON . . . . . . . . . . . . 2.5 TE TES STS, GEN GENER ERA AL . . . . . . . . . 2.6 MARKING . . . . . . . . . . . . . . .

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4 4 4 5

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5 5 6 6

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SECTIO SEC TION N 3 TENSIO TENSION N JOINTS JOINTS 3.1 DESI SIG GN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 INS INSULATI LATIO ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 3.3 3.4 3.5 3.6 3.6 3.7 3.7 3.8 3.8 3.9

WA WATE TERP RPRO ROOF OFIN ING G . . . . . . . . . .. . . . . . .. . . . . . . . . .. . . . . . . . . . .. . TE TES STS, GEN GENER ERA AL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HEATING ING CY CYCLE T TES EST T . . . . .. . . . .. . . .. . .. . . . . .. . .. . . .. . .. . SH SHOR ORTT-TI TIM ME CUR CURRE RENT NT TEST TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HO HOLD LDIN ING G STR STREN ENG GTH TEST TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSU INSULA LATI TION ON IN INTE TEGR GRIT ITY YT TES ESTS TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 4 SUSPEN SECTION SUSPENSION SION CLAMPS CLAMPS 4.1 DESI SIG GN . . . . . . . . . . . . . . . . . 4.2 CLAMPIN ING G TO TO CA CABLE . . . . . 4.3 ASSEMB EMBLY . . . . . . . . . . . . . . 4.4 INS INSULATI LATIO ON . . . . . . . . . . . . 4.5 TESTS . . . . . . . . . . . . . . . . . . 4.6 MARKING . . . . . . . . . . . . . . .

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..... . .. . . . .. . . .. . .. .. . .. .....

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8 8 8 8 8 10

11 11 11 11 12 12 12 13 13

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15 15 15 15 15 18

SECTIO SEC TION N 5 POLE POLE FITTIN FITTINGS GS 5.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2 HOOK FO FORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3 5.3 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR HO HOOK OK BOLT BOLTS S . . .. .. . .. .. . .. .. .. 5.4 5.4 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR HOO HOOKN KNUT UTS S . . . .. . . . .. . . . .. . .. . . 5.5 5.5 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR HOO HOOK KB BRA RACK CKET ETS S . . . .. . . . .. . . . .. 5.6 5.6 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR SU SUPP PPOR ORT T BRA BRACK CKET ETS S . . .. .. . .. .. . 5.7 5.7 DE DESIG SIGN N REQ REQUI UIRE REME MENTS NTS FOR FOR SU SUPP PPOR ORTE TED D HOO HOOKS KS . . . . . . . . . . . . . . 5.8 5.8 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR LIN LINKS KS . . . . . . . . . . . . . . . . . . . . . . . . . 5.9 5.9 DE DESI SIGN GN REQU REQUIR IREM EMEN ENTS TS FOR FOR EX EXTE TENS NSIB IBLE LE LI LINK NKS S . . .. .. . .. .. . . 5.10 5.10 DES DESIG IGN N REQU REQUIR IREM EMEN ENTS TS FO FOR RY YOK OKES ES . . . . . . . . . . . . . . . . . . . . . . . . 5.11 TE TES STS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.12 MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19 19 20 20 20 21 21 22 22 22 22 22

SECTION 6 ELECTR SECTION ELECTRICAL ICAL TEST TESTS S 6.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 6.2 TE TEM MPE PER RATUR ATURE E CYC CYCLE LE TES TEST T . . . .. . . .. . .. . . .. . . . .. . . . .. . . . .. 6.3 6.3 HI HIGH GH VOLT VOLTAG AGE ET TES ESTS TS ON ON INS INSUL ULAT ATIO ION N . . . .. . . .. . .. . . .. . . . ..

23 23 23

APPENDICES A FI FITT TTIN ING G DES DESIG IGN N PHIL PHILOS OSO OPHY PHY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B PURC PURCH HASIN ASING G GU GUID IDEL ELIN INES ES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24 24

 

AS 3766—1990

 

4

STANDARDS STAN DARDS AUSTRALIA AUSTRALIA

Australian St andard andard Mechanical fittings for low voltage aerial bundled cables SECTION SECT ION 1 SCOPE SCOPE A ND GENERAL GENERAL 1.1 S COPE. COPE.  This Standard sets out performance and general requirements for mechanical fittings and dedicated pole fittings to support low voltage aerial bundled cables manufactured in accordance with AS 3560. This Standard Standard allow allowss spec specified ified componen components ts to fail un unde derr exte external rnal mechan mechanical ical overload overloads. s. The design philosophy for this controlled failure mechanism is defined in Appendix A. NOTE: NOT E: Appendix Appendix B contains contains the infor information mation whi which ch should be su suppl pplied ied by the purcha purchase serr at the time of enquiry enquiry and order. order.

1.2 REF REFERENCED ERENCED D DOCUME OCUMENTS. NTS.   The following documents are referred to in this Standard:  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

AS 11 1110 10

ISO me metric tric hex hexag agon on p prec recisio ision n bol bolts ts an and d screw screwss

11 1111 11

ISO me metric tric hex hexag agon on ccom ommer merci cial al b bolt oltss aand nd screw screwss

11 1112 12

ISO m metr etric ic h hexa exago gon n nuts, in inclu cludin ding g thin nuts, nuts, slo slotted tted nuts nuts and cas castle tle nut nutss

11 1154 54 11 1154 54.1 .1

In Insul sulat ator or and and con condu ducto ctorr fitting fittingss fo forr ove overhe rhead ad powe powerr lines lines Part 1: Perf Perform orman ance ce and gene general ral req requir uireme ement ntss

1214 1214

HotHot-dip dip galv galvani anized zed coati coatings ngs on thre threade aded d fas fasteners teners (ISO me metric tric course course th thread read ser series) ies)

1390

Metr etric cup cup head bolts lts

1442 1442

Carb Carbon on st steels eels and car carbon-ma bon-manga nganese nese steel steelss — Hot-rolled Hot-rolled bars bars and semi-fin semi-finishe ished d produ products cts

16 1650 50

Ho Hot-dip t-dippe ped d galva galvaniz nized ed coat coating ingss o on n ferro ferrous us ar article ticless

16 1660 60 16 1660 60.2 .2

Me Metho thods ds o off test test for electri electricc ca cabl bles, es, co cords rds and co cond nduc uctor torss Part 2: In Insul sulat ation ion,, ext extrude ruded d se semi-c mi-con ondu ducti ctive ve scre screens ens and non non-me -metalli tallicc sheat sheaths hs

31 3100 00

Ap Appr prova ovall and and test sp spec ecifica ification tion — Def Definiti initions ons an and d gene general ral requ require iremen ments ts for elec electrica tricall materials and equipment

35 3560 60

Elec Electric tric cable cabless — A Aeri erial al bun bundle dled d voltag voltages es u up p to and inc includ luding ing 0. 0.6/ 6/1 1 kV.

39 3902 02

Qu Quality ality systems systems for pro produ duct ction ion an and d ins instal tallation lation

purpose se of this S tanda tandard rd the defin definition itionss giv given en in AS 35 3560 60 an and d the 1.3 DEF DEFINITIO INITIONS. NS.   For the purpo following apply. 1.3.1 1.3 .1 Aerial bundled cabl cablee (ABC) — (ABC)  — a cable manufactured in accordance with AS 3560. 1.3. 1.3.2 2 Cab Cable le  — complete laid-up assembly of the required number of cores. 1.3.3 1.3 .3 Compo Componen nentt   — individual item forming part of a fitting. 1.3.4 1.3 .4 Conducto Conductorr  — assembly of stranded, laid-up wires without insulation.  — any fitting for which both minimum and maximum failing loads 1.3.5 Cont 1.3.5 Controlled rolled fai failure lure fitting fitting — are specified (see Appendix A). 1.3. 1.3.6 6 Cor Coree (o (off a cabl cable) e) —  — conductor with its insulation. 1.3. 1.3.7 7 Fittin Fitting g  — complete assembly which can be applied to secure an aerial bundled cable. 1.3. 1.3.8 8 Mains  Mains   — the supply authority’s electrical circuit, formed in this case by one or more aerial bundled cables. 1.3.9 Maxi 1.3.9 Maximum mum failing load (MaxFL) (MaxFL)   — the highest value of mechanical load under which a fitting or component may fail. owest value of mecha mechanica nicall load at which t he core, 1.3.10 Minimum breaki 1.3.10 breaking ng load (MBL) (MBL)   — the l owest or cable as appropriate, may break. lowest val value ue of mechan mechanical ical l oad under under whic which h a fitting 1.3.11 Minimum failin 1.3.11 failing g load (MinFL) — the lowest or component may fail. 1.3.12 1.3 .12 Nom Nominated inated cable tension tension (NCT) (NCT)   — the value of tension in an aerial bundled cable given in Table 1.1. 1.3.13 1.3 .13 Second Secondary ary dama damage ge —  — damage to the cable after a mechanical fitting failure.

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AS 3766-1990, Mechanical fittings for low voltage aerial bundled cables  .   m   o   c  .    l   a    b   o    l   g    i   a   s  .   e   r   o    t   s   o    f   n    i    /    /   :   p    t    t    h    t   a   n   o    i   s   r   e   v    l    l   u    f   e    h    t   s   s   e   c   c    A  .   e    l   p   m   a   s   e   g   a   p    6   e   e   r    f   a   s    i    i   s    h    T

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