IEC TS 62271-304:2008
(Main)High-voltage switchgear and controlgear - Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and includuing 52 kV to be used in severe climatic conditions
High-voltage switchgear and controlgear - Part 304: Design classes for indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and includuing 52 kV to be used in severe climatic conditions
IEC/TS 62271-304:2008 applies to indoor enclosed switchgear and controlgear complying with IEC 62271-200 and IEC 62271-201, intended to be used in service conditions more severe with respect to condensation and pollution than the normal service conditions specified in IEC 62271-1. This technical specification covers equipment where any of the insulation is exposed to indoor climatic conditions. This first edition of IEC/TS 62271-304 cancels and replaces the first edition of IEC/TS 60932, published in 1988, and constitutes a technical revision. This revised document has been basically changed to be updated to today's use of high-voltage switchgear and controlgear up to 52 kV. The contents of the corrigendum of January 2010 have been included in this copy.
Appareillage à haute tension - Partie 304: Classes de construction pour l'appareillage d'intérieur sous enveloppe pour tensions assignées à partir de 1 kV jusqu'à 52 kV inclus pour usage sous conditions climatiques sévères
La CEI/TS 62271-304:2008 s'applique à l'appareillage d'intérieur sous enveloppe conforme à la CEI 62271-200 et à la CEI 62271-201, destiné à être utilisé dans des conditions de service plus sévères en ce qui concerne la condensation et la pollution, que les conditions normales de service spécifiées dans la CEI 62271-1. Cette spécification technique couvre tous les équipements dans lesquelles il existe une partie isolante exposée aux conditions climatiques d'intérieur. Cette première édition de la CEI/TS 62271-304 annule et remplace la première édition de la CEI/TS 60932 parue en 1988 dont elle constitue une révision technique. Le fondement des modifications de ce document révisé consiste en la prise en compte du mode d'utilisation actuel de l'appareillage haute tension de moins de 52 kV. Le contenu du corrigendum de janvier 2010 a été pris en considération dans cet exemplaire.
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IEC/TS 62271-304
Edition 1.0 2008-05
TECHNICAL
SPECIFICATION
SPÉCIFICATION
TECHNIQUE
High-voltage switchgear and controlgear –
Part 304: Design classes for indoor enclosed switchgear and controlgear for
rated voltages above 1 kV up to and including 52 kV to be used in severe
climatic conditions
Appareillage à haute tension –
Partie 304: Classes de construction pour l'appareillage d’intérieur sous
enveloppe pour tensions assignées à partir de 1 kV jusqu’à 52 kV inclus pour
usage sous conditions climatiques sévères
IEC/TS 62271-304:2008
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IEC/TS 62271-304
Edition 1.0 2008-05
TECHNICAL
SPECIFICATION
SPÉCIFICATION
TECHNIQUE
High-voltage switchgear and controlgear –
Part 304: Design classes for indoor enclosed switchgear and controlgear for
rated voltages above 1 kV up to and including 52 kV to be used in severe
climatic conditions
Appareillage à haute tension –
Partie 304: Classes de construction pour l'appareillage d’intérieur sous
enveloppe pour tensions assignées à partir de 1 kV jusqu’à 52 kV inclus pour
usage sous conditions climatiques sévères
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 29.130.10 ISBN 2-8318-9828-5
– 2 – TS 62271-304 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope and object.5
2 Normative references .5
3 Degrees of severity of service conditions under condensation and pollution .6
4 Classification of enclosed switchgear and controlgear .7
5 Classification procedure .7
6 Test facilities and associated requirements .9
6.1 Climatic test room .9
6.2 Control requirements.9
6.3 Energizing facilities .9
7 Selection and arrangement of the equipment for test .9
7.1 Selection of the equipment .9
7.2 Arrangement of the equipment .9
8 Ageing test .10
8.1 Level 1 ageing test .10
8.2 Level 2 ageing test .11
9 Diagnostic procedure after ageing test .11
9.1 General .11
9.2 Electrical diagnostic procedure.12
9.3 Mechanical diagnostic procedure (optional).13
9.4 Evaluation .13
Annex A (normative) Climatic cycle.14
Annex B (normative) Climatic test room .15
Annex C (informative) Example of typical environment.16
Figure 1 – Flow chart for classification procedure .8
Figure 2 – Level 1 ageing test.11
Figure 3 – Power-frequency withstand voltage test with high humidity after ageing test .12
Figure B.1 – Climatic test room.15
Table C.1 – Example of typical environment .16
TS 62271-304 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 304: Design classes for indoor enclosed
switchgear and controlgear for rated voltages above 1 kV up to and
including 52 kV to be used in severe climatic conditions
FOREWORD
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Technical specifications are subject to review within three years of publication to decide
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– 4 – TS 62271-304 © IEC:2008
IEC 62771-304, which is a technical specification, has been prepared by subcommittee 17C:
High-voltage switchgear and controlgear assemblies, of IEC technical committee 17:
Switchgear and controlgear.
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
17C/402/DTS 17C/422A/RVC
Full information on the voting for the approval of this technical specification can be found in
the report on voting indicated in the above table.
This first edition of IEC/TS 62271-304 cancels and replaces the first edition of IEC/TR 60932,
published in 1988, and constitutes a technical revision.
This revised document has been basically changed to be updated to today’s use of high-
voltage switchgear and controlgear up to 52 kV.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 62271 series, under the general title High-voltage switchgear
and controlgear, can be found on the IEC website.
The committee has decided that the contents of this publication wil
...
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