EN IEC 61952-1:2019

SLOVENSKI STANDARD
01-december-2019
Izolatorji za nadzemne vode - Kompozitni linijski podporni izolatorji za izmenične
sisteme z nazivno napetostjo nad 1000 V - 1. del: Definicije, končni priključki in
označevanje (IEC 61952-1:2019)
Insulators for overhead lines - Composite line post insulators for AC systems with a
nominal voltage greater than 1 000 V - Part 1: definitions, end fittings and designations
(IEC 61952-1:2019)
Isolatoren für Freileitungen - Verbund-Freileitungsstützer für Wechselstromsysteme mit
einer Nennspannung über 1 000 V - Teil 1: Begriffe, Endarmaturen und Bezeichnungen
(IEC 61952-1:2019)
Isolateurs pour lignes aériennes - Isolateurs composites rigides à socle pour systèmes à
courant alternatif de tension nominale supérieure à 1 000 V - Partie 1 : définitions, des
armatures d'extrémité et désignations (IEC 61952-1:2019)
Ta slovenski standard je istoveten z: EN IEC 61952-1:2019
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 61952-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 29.080.10; 29.240.20
English Version
Insulators for overhead lines - Composite line post insulators for
AC systems with a nominal voltage greater than 1 000 V - Part 1:
definitions, end fittings and designations
(IEC 61952-1:2019)
Isolateurs pour lignes aériennes - Isolateurs composites Isolatoren für Freileitungen - Verbund-Freileitungsstützer für
rigides à socle pour systèmes à courant alternatif de Wechselstromsysteme mit einer Nennspannung über 1 000
tension nominale supérieure à 1 000 V - Partie 1 : V - Teil 1: Begriffe, Endarmaturen und Bezeichnungen
définitions, des armatures d'extrémité et désignations (IEC 61952-1:2019)
(IEC 61952-1:2019)
This European Standard was approved by CENELEC on 2019-05-09. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, 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
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61952-1:2019 E

European foreword
The text of document 36/435/FDIS, future edition 1 of IEC 61952-1, 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) 2020-02-09
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-09
document have to be withdrawn
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 61952-1:2019 was approved by CENELEC as a European
Standard without any modification.

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 60050-471 -  International Electrotechnical Vocabulary - Part 471: - -
Insulators
IEC 60071-1 -  Insulation co-ordination - Part 1: Definitions, EN 60071-1 -
principles and rules
IEC 61952 2008 Insulators for overhead lines - Composite line post EN 61952 2008
insulators for A.C. systems with a nominal voltage
greater than 1 000 V - Definitions, test methods and
acceptance criteria
IEC 61952-1 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
Insulators for overhead lines – Composite line post insulators for AC systems

with a nominal voltage greater than 1 000 V –

Part 1: definitions, end fittings and designations

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.080.10; 29.240.20 ISBN 978-2-8322-6511-6

– 2 – IEC 61952-1:2019 © IEC 2019
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Mechanical, dimensional and electrical characteristics . 7
Characteristics . 7
Maximum design cantilever load (MDCL) and specified cantilever load (SCL) . 8
Minimum lightning impulse withstand voltage class (BIL) . 8
Standard coupling codes . 8
Standard base-plate codes . 18
5 Line post insulator designation . 22
6 Marking . 23
Bibliography . 32

Table 1 – Types of couplings . 9
Table 2 – Types of base plates . 19
Table 3 – Designation and characteristic of composite Line post insulators (IEC
practice) for IEC 60815-3, Class b . 24
Table 4 – Designation and characteristic of composite line post insulators (ANSI
practice) . 28

IEC 61952-1:2019 © IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES – COMPOSITE LINE
POST INSULATORS FOR AC SYSTEMS WITH A NOMINAL
VOLTAGE GREATER THAN 1 000 V –

Part 1: Definitions, end fittings and designations

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 this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
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 61952-1 has been prepared by IEC technical committee 36:
Insulators.
The text of this standard is based on the following documents:
FDIS Report on voting
36/435/FDIS 36/441/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.
A list of all parts in the IEC 61952 series, published under the general title Insulators for
overhead lines – Composite line post insulators for AC systems with a nominal voltage greater
than 1 000 V, can be found on the IEC website.

– 4 – IEC 61952-1:2019 © IEC 2019
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.
A bilingual version of this publication may be issued at a later date.

IEC 61952-1:2019 © IEC 2019 – 5 –
INTRODUCTION
This part of IEC 61952 is intended to give the main mechanical and dimensional characteristics
of composite line post insulators and their fittings in order to ensure their interchangeability.
Since line post insulators are usually subjected to combined loads (for example vertical due to
the conductor plus compressive and lateral due to the pole being at a line corner or turn), only
the MDCL is given as a specified characteristic for the mechanical strength of the insulator.
Furthermore, composite line post insulators are often used in a braced configuration for higher
voltages and mechanical loads. In these configurations the overall strength depends on the
components and geometry of the whole assembly – including notably the buckling strength of
the lin
...