EN 61211:2005

SLOVENSKI STANDARD
01-januar-2006
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Insulators of ceramic material or glass for overhead lines with a nominal voltage greater
than 1 000 V - Impulse puncture testing in air
Isolatoren aus keramischem Werkstoff oder Glas für Freileitungen mit einer
Nennspannung über 1 kV - Stoßspannungs-Durchschlagsprüfungen unter
Luftatmosphäre
Isolateurs en matière céramique ou en verre destinés aux lignes aériennes de tension
nominale supérieure à 1 000 V - Essais de perforation par chocs dans l'air
Ta slovenski standard je istoveten z: EN 61211:2005
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 61211
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2005
ICS 29.080.10
English version
Insulators of ceramic material or glass for overhead lines
with a nominal voltage greater than 1 000 V –
Impulse puncture testing in air
(IEC 61211:2004)
Isolateurs en matière céramique  Isolatoren aus keramischem Werkstoff
ou en verre destinés aux lignes aériennes oder Glas für Freileitungen mit einer
de tension nominale supérieure à 1 000 V – Nennspannung über 1 kV –
Essais de perforation par chocs dans l'air Stoßspannungs-Durchschlagsprüfungen
(CEI 61211:2004) unter Luftatmosphäre
(IEC 61211:2004)
This European Standard was approved by CENELEC on 2005-03-01. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61211:2005 E
Foreword
The text of document 36B/239/FDIS, future edition 2 of IEC 61211, 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 61211 on 2005-03-01.
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) 2005-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61211:2004 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 61211:2005
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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1)
IEC 60050-471 - International Electrotechnical Vocabulary - -
(IEV)
Chapter 471: Insulators
1) 2)
IEC 60060-1 - High-voltage test techniques HD 588.1 S1 1991
Part 1: General definitions and test
requirements
1) 2)
IEC 60060-2 - Part 2: Measuring systems EN 60060-2 1994
+ A11 1998
1) 2)
IEC 60305 - Insulators for overhead lines with a EN 60305 1996
nominal voltage above 1 kV - Ceramic or
glass insulator units for a.c. systems -
Characteristics of insulator units of the
cap and pin type
1) 2)
IEC 60383-1 - Insulators for overhead lines with a EN 60383-1 1996
nominal voltage above 1 kV
Part 1: Ceramic or glass insulator units
for a.c. systems - Definitions, test
methods and acceptance criteria

1) 2)
IEC 61083-1 - Instruments and software used for EN 61083-1 2001
measurement in high-voltage impulse
tests
Part 1: Requirements for instruments

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

NORME CEI
INTERNATIONALE
IEC
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-11
Isolateurs en matière céramique ou en verre
destinés aux lignes aériennes de tension
nominale supérieure à 1 000 V –
Essais de perforation par chocs dans l'air

Insulators of ceramic material or glass
for overhead lines with a nominal voltage
greater than 1 000 V –
Impulse puncture testing in air

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61211  IEC:2004 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9

1 Scope and object .13
2 Normative references.13
3 Terms and definitions .13
4 Abbreviations.15
5 Impulse voltage puncture test on insulators in air .15
5.1 General requirements for the test.15
5.2 Mounting arrangements .15
5.3 Number of insulators to be tested .21
5.4 Measurement of the test voltage .21
5.5 Test voltage.21
5.6 Test procedure .23
5.7 Puncture determination.23
5.8 Acceptance criteria .25
5.9 Re-test procedure.25

Annex A (normative) Method for determining U of the insulator for the basis of
per unit (p.u.) values .27
Annex B (informative) Information on measuring short front high voltage impulses.29

Bibliography .33

Figure 1 – Mounting arrangements of cap and pin and long rod insulators.17
Figure 2 – Mounting arrangements of different pin insulators .19
Figure 3 – Example of the applied impulse chopped at the test voltage by flashover of
the insulator .23
Figure A.1 – Example for the per unit values .27
Figure B.1 – Example of a recommendable configuration of a small size voltage divider.29

61211  IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS OF CERAMIC MATERIAL OR GLASS
FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE
GREATER THAN 1 000 V –
IMPULSE PUNCTURE TESTING IN AIR

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,
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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-
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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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
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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 61211 has been prepared by subcommittee 36B: Insulators for
overhead lines, of IEC technical committee 36: Insulators.
This second edition cancels and replaces the first edition which was issued as a technical
report in 1994. It constitutes a technical revision and now has the status of an International
Standard.
The main changes from the previous edition are related to using per unit values in the
specification of test voltage, defining measurement uncertainty and improvements in the test
procedure. In addition, minor clarifying changes have been made in the test assembly and in
requirements for test voltage measuring systems. Unnecessary annexes have been deleted
and replaced by a bibliography.

61211  IEC:2004 – 7 –
The text of this standard is based on the following documents:
FDIS Report on voting
36B/239/FDIS 36B/242/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
...