EN 61952:2003

SLOVENSKI STANDARD
01-september-2004
Insulators for overhead lines - Composite line post insulators for alternative
current with a nominal voltage > 1000 V (IEC 61952:2002)
Insulators for overhead lines - Composite line post insulators for alternative current with a
nominal voltage > 1 000 V
Isolatoren für Freileitungen - Verbund-Freileitungsstützer für
Wechselspannungsfreileitungen mit einer Nennspannung über 1 000 V
Isolateurs pour lignes aériennes - Isolateurs composites rigides à socle pour courant
alternatif de tension nominale > 1 000 V
Ta slovenski standard je istoveten z: EN 61952:2003
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 61952
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2003

ICS 29.080.10; 29.240.20
English version
Insulators for overhead lines -
Composite line post insulators for alternative current
with a nominal voltage > 1 000 V
(IEC 61952:2002)
Isolateurs pour lignes aériennes - Isolatoren für Freileitungen -
Isolateurs composites rigides à socle Verbund-Freileitungsstützer
pour courant alternatif für Wechselspannungsfreileitungen
de tension nominale > 1 000 V mit einer Nennspannung über 1 000 V
(CEI 61952:2002) (IEC 61952:2002)

This European Standard was approved by CENELEC on 2002-12-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61952:2003 E
Foreword
The text of document 36B/208/FDIS, future edition 1 of IEC 61952, prepared by SC 36B, Insulators for
overhead lines, of IEC TC 36, Insulators, was submitted to the IEC-CENELEC parallel vote and was
approved by CENELEC as EN 61952 on 2002-12-01.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-09-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-12-01

Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B and C are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61952:2002 was approved by CENELEC as a European
Standard without any modification.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60507 NOTE Harmonized as EN 60507:1993 (not modified).
__________
- 3 - EN 61952:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60060-1 1989 High-voltage test techniques
+ corr. March 1990 Part 1: General definitions and test HD 588.1 S1 1991
requirements
IEC 60383-1 1993 Insulators for overhead lines with a EN 60383-1 1996
nominal voltage above 1 kV A11 1999
Part 1: Ceramic or glass insulator units
for a.c. systems - Definitions, test
methods and acceptance criteria

IEC 60383-2 1993 Part 2: Insulator strings and insulator EN 60383-2 1995
sets for a.c. systems - Definitions, test
methods and acceptance criteria

IEC 60695-11-10 1999 Fire hazard testing EN 60695-11-10 1999
Part 11-10: Test flames - 50 W
horizontal and vertical flame test
methods
ISO 868 1985 Plastics and ebonite - Determination of EN ISO 868 1997
indentation hardness by means of a
durometer (Shore hardness)
ISO 3274 1996 Geometrical Product Specifications EN ISO 3274 1997
Cor 1 1998 (GPS) - Surface texture: Profile
method - Nominal characteristics of
contact (stylus) instruments
ISO 3452 Series Non-destructive testing - Penetrant - -
inspection
ISO 4287 1997 Geometrical Product Specifications EN ISO 4287 1998
Cor 1 1998 (GPS) - Surface texture: Profile
method - Terms, definitions and
surface texture parameters
ISO 4892-1 1999 Plastics - Methods of exposure to EN ISO 4892-1 2000
laboratory light sources
Part 1: General guidance
Publication Year Title EN/HD Year
ISO 4892-2 1994 Part 2: Xenon arc sources EN ISO 4892-2 1999

ISO 4892-3 1994 Part 3: Fluorescent UV lamps EN ISO 4892-3 1999

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Première édition
STANDARD
First edition
2002-07
Isolateurs pour lignes aériennes –
Isolateurs composites rigides
à socle pour courant alternatif
de tension nominale >1 000 V
Insulators for overhead lines –
Composite line post insulators
for alternative current
with a nominal voltage >1 000 V
 IEC 2002 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
V
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Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61952  IEC:2002 – 3 –
CONTENTS
FOREWORD . 5
INTRODUCTION .7
1 Scope and object .11
2 Normative references.11
3 Definitions .13
4 Identification .17
5 Classification of tests.17
5.1 Design tests .17
5.2 Type tests.21
5.3 Sample tests.21
5.4 Routine tests .21
6 Design tests.21
6.1 General .21
6.2 Tests on interfaces and connections of end fittings.21
6.3 Assembled core load tests.25
6.4 Tests of shed and housing material .27
6.5 Tests for the core material .33
7 Type tests.35
7.1 Verification of dimensions.37
7.2 Electrical tests .37
7.3 Mechanical tests.39
8 Sample tests.41
8.1 General rules.41
8.2 Verification of dimensions (E1 + E2) .41
8.3 Galvanizing test (E1 + E2) .41
8.4 Verification of the SCL (E1) .41
8.5 Re-testing procedure .43
9 Routine tests .43
9.1 Tensile load test .43
9.2 Visual examination .43
Annex A (informative) Notes on the mechanical loads and tests.51
Annex B (informative) Determination of the equivalent bending moment
caused by combined loads.55
Annex C (informative) Explanation of the concept of classes for the design tests .61
Bibliography.63
Figure 1 – Thermal-mechanical pre-stressing test –Typical cycles .45
Figure 2 – Example of a boiling container for the water diffusion test .47
Figure 3 – Electrodes for the voltage test .49
Figure 4 – Typical circuit for the voltage test .49
Figure B.1 – Combined loads applied to unbraced insulators.57
Figure B.2 – Combined loads applied to braced insulators .59

61952  IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES –
COMPOSITE LINE POST INSULATORS FOR ALTERNATIVE CURRENT
WITH A NOMINAL VOLTAGE >>1 000 V
>>
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IE
...