EN IEC 60433:2021

SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 60433:2000
Izolatorji za nadzemne vode za nazivne napetosti nad 1000 V - Keramični izolatorji
za izmenične sisteme - Karakteristike izolatorskih členov za paličaste izolatorje
(IEC 60433:2021)
Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators
for AC systems - Characteristics of insulator units of the long rod type (IEC 60433:2021)
Isolatoren für Freileitungen mit einer Nennspannung über 1 000 V - Keramische
Isolatoren für Wechselstromsysteme - Kenngrößen von Kettenisolatoren in
Langstabausführung (IEC 60433:2021)
Isolateurs pour lignes aériennes de tension nominale supérieure à 1 000 V - Isolateurs
en céramique pour réseaux à tension alternative - caractéristiques des éléments
d'isolateurs du type à long fût (IEC 60433:2021)
Ta slovenski standard je istoveten z: EN IEC 60433:2021
ICS:
29.080.10 Izolatorji Insulators
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60433

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.080.10; 29.240.20 Supersedes EN 60433:1998 and all of its amendments
and corrigenda (if any)
English Version
Insulators for overhead lines with a nominal voltage above
1 000 V - Ceramic insulators for AC systems - Characteristics of
insulator units of the long rod type
(IEC 60433:2021)
Isolateurs pour lignes aériennes de tension nominale Isolatoren für Freileitungen mit einer Nennspannung über
supérieure à 1 000 V - Isolateurs en céramique pour 1 000 V - Keramische Isolatoren für Wechselstromsysteme
réseaux à tension alternative - caractéristiques des - Kenngrößen von Kettenisolatoren in Langstabausführung
éléments d'isolateurs du type à long fût (IEC 60433:2021)
(IEC 60433:2021)
This European Standard was approved by CENELEC on 2021-02-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60433:2021 E
European foreword
The text of document 36/498/FDIS, future edition 4 of IEC 60433, prepared by IEC/TC 36 "Insulators"
was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-11-16
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-02-16
document have to be withdrawn
This document supersedes EN 60433:1998 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60433:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 60071-1 NOTE Harmonized as EN IEC 60071-1
IEC 60120 NOTE Harmonized as EN IEC 60120
IEC 60471 NOTE Harmonized as EN IEC 60471
IEC 60672-1 NOTE Harmonized as EN 60672-1
IEC 60672-3 NOTE Harmonized as EN 60672-3
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60383-1 - Insulators for overhead lines with a EN 60383-1 -
nominal voltage above 1000 V - Part 1:
Ceramic or glass insulator units for a.c.
systems - Definitions, test methods and
acceptance criteria
IEC 60433 ®
Edition 4.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulators for overhead lines with a nominal voltage above 1 000 V – Ceramic

insulators for AC systems – Characteristics of insulator units of the long rod

type
Isolateurs pour lignes aériennes de tension nominale supérieure a 1 000 V –

Isolateurs en céramique pour réseaux à tension alternative – Caractéristiques

des éléments d'isolateurs du type a long fût

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.10; 29.240.20 ISBN 978-2-8322-9204-4

– 2 – IEC 60433:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Characteristics, dimensions and type of long rod insulators . 6
5 Designation and marking . 6
Bibliography . 11

Figure 1 – Long rod insulator with clevis couplings, type C . 10
Figure 2 – Long rod insulator with socket couplings, type B . 10

Table 1 – Specified values for long rod insulators . 8

IEC 60433:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES
WITH A NOMINAL VOLTAGE ABOVE 1 000 V –
CERAMIC INSULATORS FOR AC SYSTEMS –
CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60433 has been prepared by IEC technical committee 36:
Insulators.
This fourth edition cancels and replaces the third edition published in 1998. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) wording in Scope changed from "should" to "are intended to";
b) new normative references added;
c) title of Clause 4 amended, new Note 4 added;
d) Table 1 expanded to include more specified mechanical failing loads.

– 4 – IEC 60433:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
36/498/FDIS 36/500/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 60433:2021 © IEC 2021 – 5 –
INSULATORS FOR OVERHEAD LINES
WITH A NOMINAL VOLTAGE ABOVE 1 000 V –
CERAMIC INSULATORS FOR AC SYSTEMS –
CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE

1 Scope
This International Standard is applicable to string insulator units of the long rod type with
insulating parts of ceramic material intended for use in AC overhead power lines with a
nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It is also
applicable to insulators of similar design, used in substations.
This document is applicable to ceramic string insulator units of the long rod type, either with a
clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both
ends for coupling with a pin ball.
The object of this document is to prescribe specified values for electrical and mechanical
characteristics, and for the principal dimensions of ceramic string insulator units of the long
rod type.
This document is applicable to string insulator units for use on overhead lines situated in
lightly polluted areas, and the creepage distances given in Table 1 have been established
accordingly, using the IEC TS 60815-2 recommendation of 27,8 mm/kV for S
...