EN 61952:2008

Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria

IEC 61952:2008 applies to composite line post insulators consisting of a load-bearing, cylindrical, insulating solid core made up of fibres - usually glass - in a resin-based matrix, a housing (outside the insulating core) made of elastomer material (e.g. silicone or ethylene-propylene) and end fittings permanently attached to the insulating core. The object of this standard is to - define the terms used, - prescribe test methods, - prescribe acceptance or failure criteria. This standard does not include requirements dealing with the choice of insulators for specific operating conditions. This edition includes the following significant technical changes with respect to the previous edition: - removal of tests procedures now given in IEC 62217; - inclusion of clauses on tolerances, environmental conditions, transport, storage and installation; - changes in the parameters determining the need to repeat design and type tests; and - modification of the specification of load application in bending tests to simplify testing.

Isolatoren für Freileitungen - Verbund-Freileitungsstützer für Wechselstromsysteme mit einer Nennspannung über 1 000 V - Begriffe, Prüfverfahren und Annahmekriterien

Isolateurs pour lignes aériennes - Isolateurs composites rigides à socle pour systèmes à courant alternatif de tension nominale supérieure à 1 000 V - Définitions, méthodes d'essai et critères d'acceptation

La CEI 61952:2008 est applicable aux isolateurs composites rigides à socle constitués d'un noyau isolant cylindrique supportant la charge, composé de fibres - habituellement en verre - dans une matrice à base de résine, d'un revêtement (extérieur au noyau isolant) en matériau élastomère (par exemple silicone ou éthylène-propylène) et d'armatures d'extrémité reliées de façon permanente au noyau isolant. La présente norme a pour objet: - de définir les termes employés, - de fixer les méthodes d'essai, - de fixer les critères d'acceptation ou de rejet d'une fourniture. Cette norme n'inclut pas d'exigences relatives au choix des isolateurs pour des conditions de service spécifiques. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - suppression des procédures d'essai qui sont maintenant données dans la CEI 62217; - ajout d'articles concernant les tolérances, les conditions environnementales, le transport, le stockage et l'installation; - modification des paramètres déterminant la nécessité de répéter les essais de conception et de type et modification des exigences d'application des charges dans les essais de flexion pour faciliter les essais.

Izolatorji za nadzemne vode - Sestavljeni togi izolatorji s podstavkom za izmenične sisteme z nazivno napetostjo nad 1 000 V - Definicije, preskuševalne metode in prevzemna merila (IEC 61952:2008)

General Information

• Status: Published
• Publication Date: 14-Oct-2008
• Withdrawal Date: 31-Aug-2011
• ICS: 29.080.10 - Insulators
• ICS: 29.240.20 - Power transmission and distribution lines
• Technical Committee: CLC/SR 36 - Insulators for substations
• Drafting Committee: IEC/TC 36 - IEC_TC_36
• Parallel Committee: IEC/SC 36B - IEC_SC_36B
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 15-Oct-2008
• Completion Date: 15-Oct-2008
• Ref Project: SIST EN 61952:2008 - Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria (IEC 61952:2008)

Relations

• Replaces: EN 61952:2003 - Insulators for overhead lines - Composite line post insulators for alternative current with a nominal voltage > 1 000 V
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2008
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SIST EN 61952:2004
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Insulators for overhead lines - Composite line post insulators for A.C. systems with a
nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
(IEC 61952:2008)
Isolatoren für Freileitungen - Verbund-Freileitungsstützer für Wechselstromsysteme mit
einer Nennspannung über 1 000 V - Begriffe, Prüfverfahren und Annahmekriterien (IEC
61952:2008)
Isolateurs pour lignes aériennes - Isolateurs composites rigides à socle pour systèmes à
courant alternatif de tension nominale supérieure à 1 000 V - Définitions, méthodes
d'essai et critères d'acceptation (CEI 61952:2008)
Ta slovenski standard je istoveten z: EN 61952:2008
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
October 2008
EUROPÄISCHE NORM
ICS 29.080.10; 29.240.20 Supersedes EN 61952:2003

English version
Insulators for overhead lines -
Composite line post insulators for A.C. systems
with a nominal voltage greater than 1 000 V -
Definitions, test methods and acceptance criteria
(IEC 61952:2008)
Isolateurs pour lignes aériennes -  Isolatoren für Freileitungen -
Isolateurs composites rigides à socle Verbund-Freileitungsstützer
pour systèmes à courant alternatif de für Wechselstromsysteme
tension nominale supérieure à 1 000 V - mit einer Nennspannung über 1 000 V -
Définitions, méthodes d'essai Begriffe, Prüfverfahren
et critères d'acceptation und Annahmekriterien
(CEI 61952:2008) (IEC 61952:2008)

This European Standard was approved by CENELEC on 2008-09-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61952:2008 E
Foreword
The text of document 36B/273/FDIS, future edition 2 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 2008-09-01.
This standard supersedes EN 61952:2003.
– removal of tests procedures now given in EN 62217,
– inclusion of clauses on tolerances, environmental conditions, transport, storage and installation,
– changes in the parameters determining the need to repeat design and type tests,
– clarification of the mounting arrangements for electrical type tests,
– modification of the specification of load application in bending tests to simplify testing,
– additional requirements for the visual examination,
– removal of the annex explaining the concept of classes for design tests.
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) 2009-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61952:2008 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 60507 NOTE  Harmonized as EN 60507:1993 (not modified).
IEC 61462 NOTE  Harmonized as EN 61462:2007 (not modified).
__________
- 3 - EN 61952:2008
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 60383-1 - Insulators for overhead lines with a nominal EN 60383-1 1996
voltage above 1 kV - + A11 1999
Part 1: Ceramic or glass insulator units for
a.c. systems - Definitions, test methods and
acceptance criteria
1) 2)
IEC 60383-2 - Insulators for overhead lines with a nominal EN 60383-2 1995
voltage above 1 kV -
Part 2: Insulator strings and insulator sets for
a.c. systems - Definitions, test methods and
acceptance criteria
1) 2)
IEC 62217 - Polymeric insulators for indoor and outdoor EN 62217 2006
use with a nominal voltage > 1 000 V - + corr. December 2006
General definitions, test methods and
acceptance criteria
1)
ISO 3452 - Non-destructive testing - Penetrant - -
inspection - General principles

1)
Undated reference.
2)
Valid edition at date of issue.

IEC 61952
Edition 2.0 2008-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulators for overhead lines – Composite line post insulators for A.C. systems
with a nominal voltage greater than 1 000 V – Definitions, test methods and
acceptance criteria
Isolateurs pour lignes aériennes – Isolateurs composites rigides à socle pour
systèmes à courant alternatif de tension nominale supérieure à 1 000 V –
Définitions, méthodes d’essai et critères d’acceptation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 29.080.10; 29.240.20 ISBN 2-8318-9784-X

– 2 – 61952 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.8
2 Normative references .8
3 Terms and definitions .8
4 Abbreviations .10
5 Identification.10
6 Environmental conditions.11
7 Transport, storage and installation.11
8 Tolerances .11
9 Classification of tests .11
9.1 Design tests .11
9.2 Type tests .12
9.3 Sample tests .12
9.4 Routine tests .12
10 Design tests .13
10.1 General .13
10.2 Test specimens for IEC 62217.14
10.2.1 Tests on interfaces and connections of end fittings.14
10.2.2 Tracking and erosion test .14
10.2.3 Tests on core material .15
10.3 Product specific pre-stressing for IEC 62217 tests on interfaces and
connections of end fittings.15
10.3.1 Thermal-mechanical pre-stressing .15
10.4 Assembled core load tests.15
10.4.1 Test for the verification of the maximum design cantilever load
(MDCL).15
10.4.2 Tensile load test .16
11 Type tests .16
11.1 Electrical tests.17
11.1.1 Vertical mounting arrangement .17
11.1.2 Horizontal mounting arrangement .17
11.2 Mechanical tests .18
11.2.1 Cantilever failing load test .18
12 Sample tests .19
12.1 General rules .19
12.2 Verification of dimensions (E1 + E2).19
12.3 Galvanizing test (E1 + E2).19
12.4 Verification of the SCL (E1) .19
12.4.1 Test procedure .19
12.4.2 Acceptance criteria.20
12.5 Re-testing procedure.20
13 Routine tests .20
13.1 Tensile load test.20
13.2 Visual examination .20

61952 © IEC:2008 – 3 –
Annex A (informative) Notes on the mechanical loads and tests .22
Annex B (informative) Determination of the equivalent bending moment caused by
combined loads.24
Bibliography.27

Figure 1 – Thermal-mechanical pre-stressing test – Typical cycles .21
Figure B.1 – Combined loads applied to unbraced insulators .25
Figure B.2 – Combined loads applied to braced insulators .26

Table 1 – Tests to be carried out after design changes .13
Table 2 – Design tests .14
Table 3 – Mounting arrangements for electrical tests .17
Table 4 – Sample sizes according to lot size.19

– 4 – 61952 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES –
COMPOSITE LINE POST INSULATORS FOR A.C.
SYSTEMS WITH A NOMINAL VOLTAGE
GREATER THAN 1 000 V –
DEFINITIONS, TEST
...