Iec 61466 1 2016

This stan ard a pl es to strin in ulator u its of comp site typ with b l, sock t, ton ue, clevis, Y-clevis or eye coupl n s, or a combination there f.. The o ject of this stan ard is to

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CONTENTS

FOREWORD 4

1 Sco e 6

2 Normative referen es 6

3 Mec anical an dimen ional c aracteristic 6

4 Plan of the stan ard 7

5 In ulator desig ation 7

6 Markin 7

7 Comp site in ulator u its 7

An ex A (normative) Bal an sock t coupl n s, N series 9

A.1 General 9

A.2 Dimen ion 9

A.3 Con tru tional fe tures of the gau es 9

A.4 Plan of the an ex 9

A.5 Desig ation 9

A.6 Gau es for b l coupl n s 10 A.7 NOT GO an GO Gau es for sock t couplng 14 An ex B (normative) Clevis an ton ue coupl n s, N series 16 B.1 General 16 B.2 Dimen ion 16 B.3 Plan of the an ex 16 B.4 Desig ation 16 An ex C (normative) Y-clevis coupl n s 18 C.1 General 18 C.2 Dimen ion 18 C.3 Plan of the an ex 18 C.4 Desig ation 18 An ex D (normative) Eye coupl n s 2

D.1 General 2

D.2 Dimen ion 2

D.3 Plan of the an ex 20 D.4 Desig ation 20 Bibl ogra h 2

Fig re 1 – Desig ation let ers of coupl n s 8

Fig re A.1 – Dimen ion of NOT GO gau es for b l coupl n s 10 Fig re A.2 – Dimen ion of GO gau es for b l coupl n s 10 Fig re A.3 – Dimen ion of GO an NOT GO gau es for b l coupl n s 1

Fig re A.4 – Dimen ion of NOT GO gau es for b l coupl n s 12

Fig re A.5 – Dimen ion of gau es for b l coupl n size 16N and 18N 13

Fig re A.6 – Dimen ion of gau e for b l coupl n size 2 N 13

Fig re A.7 – Dimen ion of NOT GO an GO gau es for sock t coupl n s 14

Fig re B.1 – Dimen ion of clevis an ton ue coupl n s 17

Fig re C.1 – Dimen ion of Y-clevis gau es 18

INTERNATIONAL ELECTROTECHNICAL COMMISSION

Part 1: Standard strength classes and end fit ings

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

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International Stan ard IEC 614 6-1 has b en pre ared by IEC tec nical commite 3 :

In ulators

This secon edition can els an re laces the first edition publ s ed in 19 7 This edition

con titutes a tec nical revision

This edition in lu es the fol owin sig ificant tec nical c an es with resp ct to the previou

IEC 614 6-1:2 16 © IEC 2 16 – 5 –

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

Ful information on the votin for the a proval of this stan ard can b fou d in the re ort on

votin in icated in the a ove ta le

This publ cation has b en draf ed in ac ordan e with the ISO/IEC Directives, Part 2

A l st of al p rts in the IEC 614 6 series, publ s ed u der the general title Comp sie strin

insu lator u nis for o erh ad ln s wih a n min l v lage gre ter th n 1 0 00 V, can b fou d

on the IEC we site

The commite 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 cific publcation At this date, the publcation wi b

COMPOSITE STRING INSULATOR UNITS FOR OVERHEAD LINES

Part 1: Standard strength classes and end fit ings

This p rt of IEC 614 6 is a pl ca le to comp site strin in ulator u its for a.c overhe d lnes

with a nominal voltage gre ter than 1 0 0 V an a freq en y not gre ter than 10 Hz

It also a pl es to in ulators of simi ar desig u ed in s bstation or on electric traction l nes

This stan ard a pl es to strin in ulator u its of comp site typ with b l, sock t, ton ue,

clevis, Y-clevis or eye coupl n s, or a combination there f

The o ject of this stan ard is to pres rib sp cified values for the mec anical c aracteristic

of the comp site strin in ulator u its an define the main dimen ion of the coupl n s to b

u ed on the comp site strin in ulator u its in order to p rmit the as embly of in ulators or

fitin s s p l ed by dif erent man facturers an to al ow, whenever practical,

interc an e bi ty with existin in tal ation

It also defines a stan ard desig ation s stem for comp site strin in ulator u its

NOT 1 Ge eral d finitio s a d meth ds of testin are giv n in IEC 61 0

NOT 2 Only th dime sio s n c s ary for as embly of th c u ln s are d alt with in this Intern tio al

Sta d rd Pro erties of material a d workin lo ds are n t sp cifie Th c ordin tio of dime sio s of th e

d-fitin s with th stre gthclas es is sp cifie in Cla se 7

2 Normative reference

The fol owin doc ments, in whole or in p rt, are normatively referen ed in this doc ment

an are in isp n a le for its a pl cation For dated referen es, only the edition cited a pl es

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

amen ments) a pl es

IEC 6 12 :19 4, D ime sio s of b al a d sock t cou plngs of strin insu latoru nis

IEC 6 4 1:19 7, D ime sio s of cle is a d to gue cou plngs of strin insulatoru nis

3 Mecha ical and dimensional characteristic

Comp site strin in ulator u its are stan ardized by the fol owin sp cified c aracteristic :

– sp cified mec anical lo d (SML);

– stan ard coupl n s

Al dimen ion are expres ed in mi imetres

The dimen ion a ply to the finis ed prod ct af er an s rface tre tment

IEC 614 6-1:2 16 © IEC 2 16 – 7 –

4 Plan of the standard

This stan ard in lu es eleven stan ard SML clas es desig ated for u e together with 10

dif erent series of coupl n s as fol ows

– Two diferent stan ard series of b l coupl n s, one ac ordin to IEC 6 12 an one,

typ N, as s own in An ex A of this stan ard

– Two dif erent standard series of sock t coupl n s, one ac ordin to IEC 6 12 an one,

typ N, as s own in An ex A of this stan ard

– Two diferent stan ard series of ton ue coupl n s, one, type L, ac ordin to IEC 6 4 1

an one, typ N, as s own in An ex B of this stan ard

– Two dif erent stan ard series of clevis coupl n s, one, typ L, ac ordin to IEC 6 4 1,

an one, typ N, as s own in An ex B of this stan ard

– One stan ard series of Y clevis coupl n s, as s own in An ex C of this stan ard

– One stan ard series of eye couplng as s own in An ex D of this stan ard

5 Insulator designation

In ulators are desig ated in Ta le 1 by leter CS folowed by a n mb r in icatin the

sp cified mec anical lo d (SML) in ki onewton The leter B, S, T, C, Y or E or a

combination there f whic fol ows sp cifies a b l , sock t, ton ue, clevis, Y-clevis or eye

coupl n , se Fig re 1 The fol owin fig res sp cify the size of the coupl n When a

combination of coupln s are u ed, the first leter s al alway expres the coupl n on the

up er en of the in ulator The up er en of the in ulator is defined in relation to the slo e of

the s ed In the case of s mmetrical profi e of the s ed an order of the leters is

ac e ta le

As examples, p s ible desig ation could b :

CS 12 S/B16 in icates a comp site in ulator havin a SML eq al to 12 kN, a sock t

coupl n ac ordin to IEC 6 12 , size 16, at the up er en an a b l coupl n ac ordin to

IEC 6 12 , size 16, at the other en

CS 12 C/T19N in icates a comp site in ulator havin a SML eq al to 12 kN, a clevis

coupl n ac ordin to An ex B, size 19N, at the up er en an a ton ue coupl n ac ordin

to An ex B, size 19N, at the other en

Fit in s of the same series conformin to dif erent stan ard (e.g IEC 6 12 an An ex A of

this p rt of IEC 614 6) s ould b avoided on the same in ulator

Eac in ulator s al b cle rly an in el bly mark d with the name or trademark of the

man facturer, the ye r of man facture, the sp cified mec anical lo d (SML) an a me n

p rmit in identification of e c of the comp nent p rts

7 Composite insulator units

The values of the sp cified mec anical lo d (SML) for comp site strin in ulators together

with cor esp n in coupl n sizes are given in Ta le 1

The desig ation leters of the diferent desig s of coupl n s whic may b u ed in an

combination are s own in Fig re 1

Fig re 1 – De ignation let ers of coupl ngs

This an ex a pl es to the coupl n s of comp site strin in ulator u its.

This an ex defines the dimen ion of a stan ardized series of b l an sock t coupl n s,

whic p rmit the re lacement of existin in ulator sets in ac ordan e with North American

practice, an p rmits the as embly of comp site in ulator u its an fit in s s p l ed by

dif erent man facturers

The dimen ion for the b l an sock t coupl n s are expres ed by dimen ion for the GO

an NOT GO gau es (se Fig res A.1 to A.7)

Al dimen ion in icated in Ta les A.1 to A.6 are given in mi imetres an refer to the finis ed

prod ct afer s rface tre tment s c as, for in tan e, hot dip galvanizin

The outside dimen ion of the sock t have not b en fixed, sin e they de en on the

mec anical c aracteristic of the material u ed Only the dimen ion neces ary for as embly

of the coupl n s are de lt with in this stan ard

In general, the b l is made of forged ste l an the sock t is made of mal e ble or d cti e

cast iron or forged ste l However, other materials may b u ed if they have mec anical

c aracteristic cor esp n in to those given in Ta le 1 of this p rt of IEC 614 6

NOT Dime sio s are c n erte from in h s

A.3 Constructional features of the gauges

The c oice of material, the hard es , the s rface finis , the s rface tre tment an the

method of man facture are l a le to vary from one cou try to another Therefore, the

fol owin recommen ation are given only for general g idan e:

This an ex in lu es thre stan ard sizes of b l and sock t coupln s, fol owed by the let er

N, whic reflect the North American practice

A.5 Designation

The b l an sock t coupl n s are desig ated by the s ank diameter, expres ed in

mi imetres, of the b l coupl n , fol owed by the let er N

A.6 Ga ges for bal coupl ngs

Figure A.1 – Dime sions of NOT GO ga g s for bal coupl ngs

Table A.1 – Dime sion of NOT GO ga ge for bal coupl ngs

rr

2h

3r

2r

3r

4r

5r

6α

Figure A.3 – Dime sions of GO a d NOT GO ga ge for bal coupl ngs

Table A.3 – Dime sions of GO a d NOT GO ga ge for bal coupl n s

Figure A.4 – Dime sions of NOT GO ga g s for bal coupl ngs

Table A.4 – Dime sion of NOT GO ga ge for bal coupl ngs

8h

6h

7r

9r

10r

1r

12r

IEC 614 6-1:2 16 © IEC 2 16 – 13 –

Figure A.5 – Dime sions of ga ge

for bal coupl ng size 16N a d 18N

Figure A.6 – Dime sions of g uge

for bal coupl ng size 2 N

Table A.5 – Dime sion of ga ge for bal coupl ngs

A.7 NOT GO and GO Gauges for soc et c upl ngs

Figure A.7 – Dime sions of NOT GO a d GO ga g s for soc et coupl ngs

2R

s

Gagcot

Annex B

(normativ )

Clevis and tongue coupl ngs, N series

This an ex a pl es to the coupl n s of comp site strin in ulator u its

This annex defines the dimen ion of a series of clevis an ton ue coupl n s, whic p rmit

artic lation p rp n ic lar to the coupl n pin axis to avoid b n in forces in the in ulator,

an p rmits the as embly of comp site in ulator u its an fitin s s p led by diferent

man facturers

B.2 Dimensions

Al dimen ion in icated in Ta le B.1 are given in mi imetres, an refer to the finis ed

articles afer s rface tre tment s c as, for in tan e, hot dip galvanizin

The outside dimen ion of the clevis have not b en fixed, sin e they de en on the

mec anical c aracteristic of the material u ed Therefore the len th of the coupl n pin is

not fixed an , u les otherwise agre d, the coupl n pin s al b del vered together with the

clevis A lockin device, s c as a n t or a spl t pin, s al b placed to hold the pin in its

place Only the dimen ion neces ary for as embly of the coupl n s are de lt with in this

stan ard

In general, the clevis is made of male ble or d cti e cast iron or forged ste l an the ton ue

of forged ste l However, other materials may b u ed if they have mec anical

c aracteristic cor esp n in to those given in Ta le 1

NOT Th dime sio s of this series of c u ln s are b se o th se of th IEC 6 4 1 C series, e c pt th t th y

alow artic latio p rp n ic lar to th c u ln pin

B.3 Plan of the annex

This an ex in lu es thre stan ard sizes of clevis an ton ue coupl n s whic reflect the

North American practice

B.4 Designation

The clevis an ton ue coupl n s are desig ated by the diameter, expres ed in mi imetres, of

the coupl n pin whic con ects the clevis an the ton ue, fol owed by the leter N

IEC 614 6-1:2 16 © IEC 2 16 – 17 –

Figure B.1 – Dime sion of cle is a d ton ue coupl n s

Table B.1 – Dime sions of cle is a d tong e coupl ngs

Annex C

(normativ )

Y-clevis coupl ngs

This an ex a pl es to the coupl n s of comp site strin in ulator u its

This an ex defines the dimen ion of a series of Y-clevis coupl n s, whic p rmit artic lation

p rp n ic lar an lon itu inal to the coupl n pin axis, to avoid b n in forces in the

in ulator, an p rmits the as embly of comp site in ulator u its an fitin s s p l ed by

dif erent man facturers

C.2 Dimensions

Al dimen ion in icated in Ta le C.1 are given in mi imetres, an refer to the finis ed

articles afer s rface tre tment s c as, for in tan e, hot dip galvanizin

The outside dimen ion of the clevis have not b en fixed, sin e they de en on the

mec anical c aracteristic of the material u ed Therefore, the len th of the coupl n pin is

not fixed an , u les otherwise agre d, the coupl n pin s al b del vered together with the

clevis A lockin device, s c as a n t or a spl t pin, s al b placed to hold the pin in its

place Only the dimen ion neces ary for as embly of the coupl n s are de lt with in this p rt

of IEC 614 6

In general, the clevis is made of mal e ble or d ctie cast iron or forged ste l However, other

materials may b u ed if they have mec anical c aracteristic cor esp n in to those given

in Ta le 1

C.3 Plan of the annex

This an ex in lu es thre stan ard sizes of Y-clevis coupl n s whic reflect the North

American practice

C.4 Designation

The Y-clevis coupl n s are desig ated by diameter, expres ed in mi imetres, of the coupl n

pin whic con ects the clevis to the eq ipment to whic it s al b fited, as s own in

Annex D

(normativ )

Eye coupl ngs

This an ex a pl es to the coupl n s of comp site strin in ulator u its

This an ex defines the dimen ion of a series of eye coupl n s, whic p rmit artic lation

p rp n ic lar an lon itu inal to the coupl n , to avoid b n in forces in the in ulator, an to

p rmit the as embly of comp site in ulator u its an fit in s s p l ed by diferent

man facturers

D.2 Dimensions

Al dimen ion in icated in Ta le D.1 are given in mi imetres, an refer to the finis ed

articles afer s rface tre tment s c as, for in tan e, hot dip galvanizin

The dimen ion of the eye have only b en fixed for s c dimen ion that are imp rtant for

the con ectin p rts sin e al other dimen ion de en on the mec anical c aracteristic of

the material u ed

In general, the eye is made of forged ste l However, other materials may b u ed if they

have mec anical c aracteristic cor esp n in to those given in Ta le 1 of this stan ard

D.3 Plan of the annex

This an ex in lu es thre stan ard sizes of eye coupl n s whic reflect the North American

practice

D.4 Designation

The eye coupl n s are desig ated by the in ide width, expres ed in mi imetres, of the

coupl n eye, as s own in Fig re D.1

Bibl ography

[1] IEC 61 0 :2 0 , Insulators for o erh ad ln s – Comp sie su sp nsio a d te sio

insu lators fora.c systems wih a n min l v lage gre ter th n 1 0 00 V – D efini o s,

test meth ds a d ac e ta ce crieria