EN IEC 60305:2021

SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 60305:1997
Izolatorji za nadzemne vode za nazivne napetosti nad 1000 V - Keramični ali
stekleni izolatorski členi za izmenične sisteme - Karakteristike izolatorskih členov
za kapaste izolatorje (IEC 60305:2021)
Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or glass
insulator units for AC systems - Characteristics of insulator units of the cap and pin type
(IEC 60305:2021)
Isolatoren für Freileitungen mit einer Nennspannung über 1000 V – Keramik- oder Glas-
Kettenisolatoren für Wechselstromsysteme – Kenngrößen von Kettenisolatoren vom Typ
Kappenisolator (IEC 60305:2021)
Isolateurs pour lignes aériennes de tension nominale supérieure à 1000 V - Eléments
d'isolateurs en matière céramique ou en verre pour systèmes à courant alternatif -
Caractéristiques des éléments d'isolateurs du type capot et tige (IEC 60305:2021)
Ta slovenski standard je istoveten z: EN IEC 60305:2021
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 60305

NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.080.10; 29.240.20 Supersedes EN 60305:1996 and all of its amendments
and corrigenda (if any)
English Version
Insulators for overhead lines with a nominal voltage above
1 000 V - Ceramic or glass insulator units for AC systems -
Characteristics of insulator units of the cap and pin type
(IEC 60305:2021)
Isolateurs pour lignes aériennes de tension nominale  Isolatoren für Freileitungen mit einer Nennspannung über
supérieure a 1 000 V - Éléments d'isolateurs en céramique 1000 V – Keramik- oder Glas-Kettenisolatoren für
ou en verre pour réseaux à tension alternative - Wechselstromsysteme – Kenngrößen von Kettenisolatoren
Caractéristiques des éléments d'isolateurs du type capot et vom Typ Kappenisolator
tige (IEC 60305:2021)
(IEC 60305:2021)
This European Standard was approved by CENELEC on 2021-02-15. 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 60305:2021 E
European foreword
The text of document 36/499/FDIS, future edition 5 of IEC 60305, 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) 2021-11-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-02-15
document have to be withdrawn
This document supersedes EN 60305:1996 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 60305:2021 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 60120:2020 NOTE Harmonized as EN IEC 60120:2020 (not modified)
IEC 60471:2020 NOTE Harmonized as EN IEC 60471:2020 (not modified)
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 60305 ®
Edition 5.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulators for overhead lines with a nominal voltage above 1 000 V – Ceramic or

glass insulator units for AC systems – Characteristics of insulator units of the

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

Éléments d’isolateurs en céramique ou en verre pour réseaux à tension

alternative – Caractéristiques des éléments d'isolateurs du type capot et tige

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.10; 29.240.20 ISBN 978-2-8322-9203-7

– 2 – IEC 60305:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Mechanical characteristics, dimensions and types . 6
5 Designation and marking with respect to shed profile . 6
6 Tolerances . 8
Bibliography . 14

Figure 1 – Typical "standard" profile . 7
Figure 2 – Typical "anti-fog" profile "P" . 7
Figure 3 – Typical "aerodynamic" profile "D" . 7
Figure 4 – Typical "two-alternating" profile "V" . 7
Figure 5 – Typical "three-alternating" profile "T" . 8
Figure 6 – String insulator unit of standard and anti-fog profile with ball and socket
coupling . 8
Figure 7 – String insulator unit of standard and anti-fog profile with clevis and tongue
coupling . 10
Figure 8 – String insulator unit of aerodynamic profile with ball and socket coupling . 11
Figure 9 – String insulator unit of two-alternating profile with ball and socket coupling . 11
Figure 10 – String insulator unit of three-alternating profile with ball and socket
coupling . 12

Table 1 – Specified values of mechanical and dimensional characteristics for string
insulator units of standard and anti-fog profile with ball and socket couplings . 9
Table 2 – Specified values of mechanical and dimensional characteristics for string
insulator units of standard and anti-fog profile with clevis and tongue couplings . 10
Table 3 – Specified values of mechanical and dimensional characteristics for string
insulator units of aerodynamic profile with ball and socket couplings . 11
Table 4 – Specified values of mechanical and dimensional characteristics for string
insulator units of two-alternating profile with ball and socket couplings . 12
Table 5 – Specified values of mechanical and dimensional characteristics for string
insulator units of three-alternating profile with ball and socket couplings . 13

IEC 60305:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES WITH
A NOMINAL VOLTAGE ABOVE 1 000 V –
CERAMIC OR GLASS INSULATOR UNITS FOR AC SYSTEMS –
CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE

FOREWORD
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International Standard IEC 60305 has been prepared by IEC technical committee 36:
Insulators.
This fifth edition cancels and replaces the fourth edition published in 1995. This edition
constitutes a technical revision.
This edition includes the following significant technical changes w
...