EN 62155:2003

SLOVENSKI SIST EN 62155:2004
STANDARD
september 2004
Hollow pressurized and unpressurized ceramic and glass insulators for use in
electrical equipment with rated voltages greater than 1000 V (IEC 62155:2003,
modified)
ICS 29.080.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

NORME CEI
INTERNATIONALE IEC
INTERNATIONAL
Première édition
STANDARD
First edition
2003-05
Isolateurs creux avec ou sans pression interne,
en matière céramique ou en verre, pour utilisation
dans des appareillages prévus pour des tensions
nominales supérieures à 1 000 V
Hollow pressurized and unpressurized ceramic
and glass insulators for use in electrical
equipment with rated voltages greater than 1 000 V
© IEC 2003 Droits de reproduction réservés ⎯ Copyright - all rights reserved
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Pour prix, voir catalogue en vigueur
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62155 © IEC:2003 – 3 –
CONTENTS
FOREWORD . 7
1 Scope and object . 9
1.1 General . 9
1.2 Hollow insulators or hollow insulator bodies intended for general use . 9
1.3 Ceramic hollow insulators intended for use with permanent gas pressure .11
2 Normative references.11
3 Terms and definitions .13
4 Insulating materials.19
5 General recommendations for design.19
5.1 General recommendations for design of hollow insulators and hollow insulator
bodies intended for general use.19
5.2 Design rules for hollow insulators and hollow insulator bodies for use with
permanent gas pressure .19
6 Classification of the tests, sampling rules and procedures .25
6.1 Classification of the tests.25
6.2 Relevant tests for type, sample and routine tests.27
6.3 Hollow insulator or hollow insulator body selection .29
6.4 Retest procedure for sample tests .31
6.5 Quality assurance.31
7 General test procedures and requirements .33
7.1 Verification of the dimensions and roughness of ground surfaces .33
7.2 Mechanical failing load tests.43
7.3 Temperature cycle test .49
7.4 Porosity test .53
7.5 Galvanizing test.55
8 Type tests.57
8.1 Tests .57
8.2 Pressure test .59
8.3 Bending test .59
9 Sample tests.61
9.1 Tests for hollow insulators or hollow insulator bodies intended for general use .61
9.2 Tests for ceramic hollow insulators or hollow insulator bodies intended for use
with permanent gas pressure.61
10 Routine tests .61
10.1 Tests for hollow insulators or hollow insulator bodies intended for general use .61
10.2 Tests for ceramic hollow insulators or hollow insulator bodies intended for use
with permanent gas pressure.63
10.3 Routine visual inspection .63
10.4 Electrical routine test .65
10.5 Routine mechanical tests for hollow insulators or hollow insulator bodies
intended for general use .67
10.6 Routine mechanical tests for ceramic hollow insulators or hollow insulator bodies
intended for use with permanent gas pressure.69
10.7 Routine thermal shock test .71

62155 © IEC:2003 – 5 –
11 Documentation.71
11.1 Marking .71
11.2 Records.71
Annex A (informative) Methods of testing for tolerances of parallelism, coaxiality,
eccentricity, angular deviation, camber and shed angle of hollow insulators or hollow
insulator bodies.73
Annex B (informative) Methods for bending tests of hollow insulator bodies .85
Annex C (informative) Alternative test method for the temperature-cycle test .91
Annex D (informative) Bending moment equivalent to the design pressure .93
Bibliography.95
Figure 1 – Bending moments.23
Figure 2 – Tolerance of wall thickness .35
Figure 3 – Deviation from roundness of inner or outer core diameter.37
Figure 4 – Effect of camber of the hollow insulator body.39
Figure 5 – Tolerance on height of sanding and porcelain chamfered end flange .41
Figure 6 – Definition of thickness Φ mm for temperature-cycle test .49
Figure A.1 – Measuring of tolerances of form and position .75
Figure A.2 – Measuring of angular deviation of fixing holes.75
Figure A.3 – Method for measuring camber.77
Figure A.4 – Measuring shed angle .79
Figure A.5 – Centring with conical shank screws.79
Figure A.6 – Axial run-out .81
Figure A.7 – Parallelism and perpendicularity.81
Figure A.8 – Coaxiality and concentricity, evenness, alignment of fixing holes
and proper sealing .83
Figure B.1 – Test ram for uniform distributed bending moment.85
Figure B.2 – Test ram for non-uniform distributed bending moment.87
Figure B.3 – Test method with bending load applied.89
Figure C.1 – Alternative test arrangement for the temperature-cycle test.91
Figure D.1 – Diameters for determining the equivalent bending moment to
the design pressure.93
Table 1 – Typical examples of load combinations and weighting factors.23
Table 2 – Hollow insulators or hollow insulator bodies intended for general use –
Relevant tests for type, sample and routine tests .27
Table 3 – Ceramic hollow insulators or hollow insulator bodies intended for use with
permanent gas pressure – Relevant tests for type, sample and routine tests.29
Table 4 – Number of samples for sample tests .31
Table 5 – Selection of temperature difference for temperature cycle test.51
Table 6 – Selection of temperature difference for the alternative temperature-cycle test .51
Table 7 – Selection of temperature difference for insulators of annealed glass.53

62155 © IEC:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
HOLLOW PRESSURIZED AND UNPRESSURIZED CERAMIC
AND GLASS INSULATORS FOR USE IN ELECTRICAL EQUIPMENT
WITH RATED VOLTAGES GREATER THAN 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 IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62155 has been prepared by subcommittee 36C: Insulators for
substations, of IEC technical committee 36: Insulators.
This International Standard cancels and replaces the second edition of IEC 60233, published
in 1974, and the second edition of IEC 61264, published in 1998, and constitutes a technical
revision of IEC 60233.
The text of this standard is based on the following documents:
FDIS Report on voting
36C/143/FDIS 36C/145/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until 2007.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
62155 © IEC:2003 – 9 –
HOLLOW PRESSURIZED AND UNPRESSURIZED CERAMIC
AND GLASS INSULATORS FOR USE IN ELECTRICAL EQUIPMENT
WITH RATED VOLTAGES GREATER THAN 1 000 V
1 Scope and object
1.1 General
This standard is applicable to
– ceramic and glass h
...