SIST EN 62271-205:2008

High-voltage switchgear and controlgear -- Part 205: Compact switchgear assemblies for rated voltages above 52 kV

This part of IEC 62271 applies to compact switchgear assemblies consisting of at least one switching device directly connected to, or sharing components with, one or more other devices such that there is an interaction between the functions of the individual devices. Such assemblies are made up of devices defined in 1.101 and are designed, tested and supplied for use as a single unit. The interaction between devices may be due to proximity, sharing of components or a combination of both. The assemblies may contain components of air insulated switchgear (AIS) only or a combination of AIS and gas insulated switchgear (GIS), so called mixed technology switchgear (MTS) and may be delivered entirely prefabricated or partially assembled.

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 205: Kompakte Schaltanlagenanordnungen für Bemessungsspannungen über 52 kV

Appareillage à haute tension -- Partie 205: Ensembles d'appareillages compacts de tensions assignées supérieures à 52 kV

La présente partie de la CEI 62271 s'applique aux ensembles d'appareillages compacts comprenant au moins un appareil de connexion directement connecté à, ou partageant des composants avec, un ou plusieurs appareils tel(s) qu'il existe une interaction entre les fonctions des appareils individuels. De tels ensembles sont constitués des appareils définis en 1.101, ils sont conçus, essayés et fournis pour être utilisés comme une seule unité. L'interaction entre les appareils peut être due à la proximité, au partage de composants ou à une combinaison des deux. Les ensembles peuvent comprendre des composants d'appareillages isolés à l'air (Air Insulated Switchgear - AIS) uniquement ou une combinaison d'AIS et d'appareillages à isolation gazeuse (Gas Insulated Switchgear - GIS), désignée sous le terme appareillage à technologie mixte (Mixed Technology Switchgear - MTS), ils peuvent être livrés entièrement préfabriqués ou partiellement assemblés.

Visokonapetostne stikalne in krmilne naprave - 205. del: Sestav omrežnih stikalnih naprav za naznačene napetosti nad 52 kV (IEC 62271-205:2008)

General Information

• Status: Published
• Publication Date: 04-Jun-2008
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SKA - Switchgear and control gear
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-May-2008
• Due Date: 17-Jul-2008
• Completion Date: 05-Jun-2008
• Ref Project: EN 62271-205:2008 - High-voltage switchgear and controlgear - Part 205: Compact switchgear assemblies for rated voltages above 52 kV

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62271-205:2008
01-julij-2008
9LVRNRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO6HVWDYRPUHåQLKVWLNDOQLK
QDSUDY]DQD]QDþHQHQDSHWRVWLQDGN9,(&
High-voltage switchgear and controlgear - Part 205: Compact switchgear assemblies for
rated voltages above 52 kV (IEC 62271-205:2008)
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 205: Kompakte
Schaltanlagenanordnungen für Bemessungsspannungen über 52 kV (IEC 62271-
205:2008)
Appareillage a haute tension - Partie 205: Ensembles d'appareillages compacts de
tensions assignées supérieures a 52 kV (CEI 62271-205:2008)
Ta slovenski standard je istoveten z: EN 62271-205:2008
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN 62271-205:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD
EN 62271-205

NORME EUROPÉENNE
April 2008
EUROPÄISCHE NORM

ICS 29.130.10; 29.130.99


English version


High-voltage switchgear and controlgear -
Part 205: Compact switchgear assemblies
for rated voltages above 52 kV
(IEC 62271-205:2008)


Appareillage à haute tension -  Hochspannungs-Schaltgeräte
Partie 205: Ensembles d'appareillages und -Schaltanlagen -
compacts de tensions assignées Teil 205: Kompakte
supérieures à 52 kV Schaltanlagenanordnungen für
(CEI 62271-205:2008) Bemessungsspannungen über 52 kV
(IEC 62271-205:2008)




This European Standard was approved by CENELEC on 2008-03-01. 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, 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 62271-205:2008 E

---------------------- Page: 2 ----------------------

EN 62271-205:2008 - 2 -
Foreword
The text of document 17C/418/FDIS, future edition 1 of IEC 62271-205, prepared by SC 17C,
High-voltage switchgear and controlgear assemblies, of IEC TC 17, Switchgear and controlgear, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62271-205 on
2008-03-01.
This standard is to be used in conjunction with EN 62271-1:2007, to which it refers and which is
applicable, unless otherwise specified. In order to simplify the indication of corresponding requirements,
the same numbering of clauses and subclauses is used as in EN 62271-1. Amendments to these clauses
and subclauses are given under the same numbering, whilst additional subclauses are numbered
from 101.
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) 2008-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-03-01
Annexes ZA and ZB have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62271-205:2008 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 60044-6 NOTE  Harmonized as EN 60044-6:1999 (not modified).
IEC 60516 NOTE  Harmonized as HD 357 S2:1987 (not modified).
IEC 62271-2 NOTE  Harmonized as EN 62271-2:2003 (not modified).
__________

---------------------- Page: 3 ----------------------

- 3 - EN 62271-205:2008
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 60044-1 - Instrument transformers - EN 60044-1 1999
(mod) Part 1: Current transformers


1) 2)
IEC 60044-2 - Instrument transformers - EN 60044-2 1999
(mod) Part 2: Inductive voltage transformers


1) 2)
IEC 60044-3 - Instrument transformers - EN 60044-3 2003
Part 3: Combined transformers


1) 2)
IEC 60044-5 - Instrument transformers - EN 60044-5 2004
Part 5: Capacitor voltage transformers


1) 2)
IEC 60044-7 - Instrument transformers - EN 60044-7 2000
Part 7: Electronic voltage transformers


1) 2)
IEC 60044-8 - Instrument transformers - EN 60044-8 2002
Part 8: Electronic current transformers


1)
IEC 60050-441 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 441: Switchgear, controlgear and
fuses


1) 2)
IEC 60099-4 - Surge arresters - EN 60099-4 2004
(mod) Part 4: Metal-oxide surge arresters without
gaps for a.c. systems


1) 2)
IEC 60137 - Insulated bushings for alternating voltages EN 60137 2003
above 1 000 V


1) 2)
IEC 60265-2 - High-voltage switches - EN 60265-2 1993
Part 2: High-voltage switches for rated
voltages of 52 kV and above


1) 2)
IEC 61462 - Composite hollow insulators - Pressurized EN 61462 2007
and unpressurized insulators for use in
electrical equipment with rated voltage greater
than 1 000 V - Definitions, test methods,
acceptance criteria and design
recommendations


1)
IEC/TS 61639 - Direct connection between power - -
transformers and gas-insulated
metal-enclosed switchgear for rated voltages
of 72,5 kV and above


1)
IEC 61936-1 - Power installations exceeding 1kV a.c. - - -
Part 1: Common rules






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

---------------------- Page: 4 ----------------------

EN 62271-205:2008 - 4 -
Publication Year Title EN/HD Year
1) 2)
IEC 62155 - Hollow pressurized and unpressurized EN 62155 2003
(mod) ceramic and glass insulators for use in
electrical equipment with rated voltages
greater than 1 000 V


1)
IEC 62271-1 - High-voltage switchgear and controlgear - - -
Part 1: Common specifications


1) 2)
IEC 62271-100 - High-voltage switchgear and controlgear - EN 62271-100 2001
Part 100: High-voltage alternating-current
circuit-breakers


1) 2)
IEC 62271-102 - High-voltage switchgear and controlgear - EN 62271-102 2002
Part 102: Alternating current disconnectors + corr. March 2005
and earthing switches


1) 2)
IEC 62271-108 - High-voltage switchgear and controlgear - EN 62271-108 2006
Part 108: High-voltage alternating current
disconnecting circuit-breakers for rated
voltages of 72,5 kV and above


1) 2)
IEC 62271-203 - High-voltage switchgear and controlgear - EN 62271-203 2004
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV


1) 2)
IEC 62271-209 - High-voltage switchgear and controlgear - EN 62271-209 2007
Part 209: Cable connections for gas-insulated
metal-enclosed switchgear for rated voltages
above 52 kV - Fluid-filled and extruded
insulation cables - Fluid-filled and dry-type
cable-terminations

---------------------- Page: 5 ----------------------

- 5 - EN 62271-205:2008
Annex ZB
(informative)

A-deviations

A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC national member.

This European Standard does not fall under any Directive of the EC.

In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the European
Standard until they have been removed.

Clause Deviation
5 Italy
*)
- (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.1; VSR.8.B.2; M.15.D.2)
Italian laws apply to gas pressurized enclosures made of both insulating and metallic
2
materials with a capacity of 25 litres or above, a design pressure higher than 0,05 kg/cm
and a temperature range: -25 °C/+100 °C (only for insulating materials).
Moreover the manufacturer of any electrical equipment which comprehends gas
pressurized enclosures must submit the design of the pressurized enclosures itself to a
proper legal Authority indicating the stresses and the loads which have any influence on
the design itself. For each of the stresses the manufacturer must indicate the design
values and the relevant computations.
- (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.1 and M.15.D.3. Table I for porcelain)
Only the use of porcelain type .A or S. (Aluminous or Siliceous) is permitted.
- (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.1 Clause 2)
The type test shall be performed in the presence of the Authority Supervisor.
- (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.2 Clause 2; M.15.D.4)
An additional pressure test shall be performed on a complete pressurized enclosure. This
has to withstand 1,5 times the design pressure without failure for five minutes.
Temperature cycles test and electrical test shall be made; after these tests shall be
carried out consecutively the pressure test at pressure p ≥ 4,25 times the design
pressure.
- (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.1 Subclause 4.1.2)
For a homogeneous batch of 100 pieces max., one hollow insulator shall be subjected to
the failure test with a pressure 4,25 times the design pressure.
- (Italian pressure vessel code for electrical switchgear DM 1 December 1980 and DM
10 September 1981 published in Gazzetta Ufficiale n° 285 dated 16.10.1981)
For metal-enclosed switchgear and controlgear containing gas-filled compartments, the
design pressure is limited to a maximum of 0,5 bar (gauge) and the volume is limited to a
maximum of 2 m³. Gas filled compartments having a design pressure exceeding 0,5 bar
(gauge) or a volume exceeding 2 m³ shall be designed according to the Italian pressure
vessel code for electrical switchgear.
__________


*)
I.S.P.E.S.L.: Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro.

---------------------- Page: 6 ----------------------

IEC 62271-205
Edition 1.0 2008-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


High-voltage switchgear and controlgear –
Part 205: Compact switchgear assemblies for rated voltages above 52 kV

Appareillage à haute tension –
Partie 205: Ensembles d'appareillages compacts de tensions assignées
supérieures à 52 kV

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
T
CODE PRIX
ICS 29.130.10; 29.130.99 ISBN 2-8318-9511-1

---------------------- Page: 7 ----------------------

– 2 – 62271-205 © IEC:2008
CONTENTS
FOREWORD.4

1 General .6
1.1 Scope.6
1.2 Normative references .7
2 Normal and special service conditions .8
3 Terms and definitions .8
3.1 General terms .8
3.2 Compact switchgear assembly .9
4 Rating .9
4.1 Rated voltage (U ) .9
r
4.2 Rated insulation level .10
4.3 Rated frequency (f ).10
r
4.4 Rated normal current (I ) and temperature rise .10
r
4.5 Rated short-time withstand current (I ) .10
k
4.6 Rated peak withstand current (I ) .10
p
4.7 Rated duration of short circuit (t ) .10
k
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ).10
a
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits .10
5 Design and construction .11
5.3 Earthing of switchgear and controlgear .11
5.101 Earthing of compact switchgear assemblies and their controlgear.11
5.102 Pressure relief devices .11
5.10 Nameplates .11
5.12 Position indication .11
5.103 Locking devices for maintenance operation .11
5.104 Movement of pressurized devices .12
5.105 Isolating distance for maintenance.12
6 Type tests .12
6.1 General .12
6.2 Dielectric tests.13
6.3 Radio interference voltage (r.i.v.) test .13
6.4 Measurement of the resistance of circuits .14
6.5 Temperature-rise tests.14
6.6 Short-time withstand current and peak withstand current tests.14
6.101 Mechanical and environmental tests .15
7 Routine tests .17
7.1 Dielectric test on the main circuit .17
7.2 Tests on auxiliary and control circuits .17
7.3 Measurement of the resistance of the main circuit .17
7.101 Functional tests on auxiliary and control circuits .17
8 Guide to the selection of switchgear and controlgear.17
8.101 Guide to the selection of compact switchgear assemblies .17
9 Information to be given with enquiries, tenders and orders .18

---------------------- Page: 8 ----------------------

62271-205 © IEC:2008 – 3 –
10 Transport, storage, installation, operation and maintenance .18
10.1 Conditions during transport, storage and installation .18
10.2 Installation .18
10.3 Operation .18
10.4 Maintenance.18
11 Safety.18

Annex AA (informative) Explanations of compact switchgear assemblies .19

Bibliography.23

Figure AA.1 – Example for type 1 .21
Figure AA.2 – Example for type 2 .21
Figure AA.3 – Example for type 3 .22
Figure AA.4 – Example for type 3 .22

Table 101 – Type tests on the compact switchgear assembly .12

---------------------- Page: 9 ----------------------

– 4 – 62271-205 © IEC:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 205: Compact switchgear assemblies
for rated voltages above 52 kV


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,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
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-
governmental organizations liaising with the IEC also participate in this preparation. 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 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
Publications.
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 62271-205 has been prepared by subcommittee 17C: High-voltage
switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and
controlgear.
This standard should be read in conjunction with IEC 62271-1, first edition, to which it refers
and which is applicable, unless otherwise specified. In order to simplify the indication of
corresponding requirements, the same numbering of clauses and subclauses is used as in
IEC 62771-1. Amendments to these clauses and subclauses are given under the same
numbering, whilst additional subclauses are numbered from 101.

---------------------- Page: 10 ----------------------

62271-205 © IEC:2008 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
17C/418/FDIS 17C/423/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.
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 will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

---------------------- Page: 11 ----------------------

– 6 – 62271-205 © IEC:2008
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 205: Compact switchgear assemblies
for rated voltages above 52 kV



1 General
1.1 Scope
This part of IEC 62271 applies to compact switchgear assemblies consisting of at least one
switching device directly connected to, or sharing components with, one or more other
devices such that there is an interaction between the functions of the individual devices. Such
assemblies are made up of devices defined in 1.101 and are designed, tested and supplied
for use as a single unit. The interaction between devices may be due to proximity, sharing of
components or a combination of both. The assemblies may contain components of air
insulated switchgear (AIS) only or a combination of AIS and gas insulated switchgear (GIS),
so called mixed technology switchgear (MTS) and may be delivered entirely prefabricated or
partially assembled.
It is not possible to define all potential arrangements of compact switchgear assemblies
however four examples are shown for information in Annex A.
These compact switchgear assemblies are for indoor and/or outdoor installations in systems
having rated voltages above 52 kV and service frequencies of 50 Hz and 60 Hz.
This standard covers the influence on performance of the interactions between devices within
compact switchgear assemblies and defines ratings and test procedures for these assemblies.
IEC 62271-1 is applicable if not stated otherwise.
This standard does not apply to switchgear assemblies consisting solely of GIS which are
covered by 62271-203.
1.101 Objective
The objective of this standard is to respond to the increasing use of compact switchgear
assemblies that perform the functions of a number of separate devices and their controlgear.
Numerous arrangements are possible and this standard provides guidance on basic types of
assemblies which might be envisaged.
As there are potential interactions between devices within such assemblies, it is necessary to
consider the standardization requirements for the assembly in its entirety.
The devices, defined by IEC standards, which may form part of a compact switchgear
assembly are listed below:

---------------------- Page: 12 ----------------------

62271-205 © IEC:2008 – 7 –
Switching devices:
• Circuit-breakers  IEC 62271-100
• Disconnectors/Earthing switches IEC 62271-102
• Switches  IEC 60265-2
• Disconnecting circuit-breakers IEC 62271-108
Devices:
• Instrument transformers
– Current transformers IEC 60044-1, IEC 60044-8
– Voltage transformers IEC 60044-2, IEC 60044-5, IEC 60044-7
– Combined transformers IEC 60044-3
• Surge arresters  IEC 60099-4
• Bushings  IEC 60137
• Insulators   IEC 61462, IEC 62155
• Cable connections  IEC 62271-209
• Transformer connections IEC 61639
Each switching device, device and their controlgear forming part of a compact switchgear
assembly shall comply with the relevant individual standard. If part of the compact switchgear
assembly is formed by metal enclosed switchgear devices the requirements of IEC 62271-203
apply.
Compact switchgear assemblies, as defined in this standard, are considered to be a single
product with a single serial number and one set of documentation.
1.2 Normative references
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.
IEC 60044-1, Instrument transformers – Part 1: Current transformers
IEC 60044-2, Instrument transformers – Part 2: Inductive voltage transformers
IEC 60044-3, Instrument transformers – Part 3: Combined transformers
IEC 60044-5, Instrument transformers – Part 5: Capacitor voltage transformers
IEC 60044-7, Instrument transformers – Part 7: Electronic voltage transformers
IEC 60044-8, Instrument transformers – Part 8: Electronic current transformers
IEC 60050-441, International Electrotechnical Vocabulary – Chapter 441: Switchgear,
controlgear and fuses
IEC 60099-4, Surge arresters – Part 4: Metal-oxide surge arresters without gaps for a.c.
systems
IEC 60137, Insulated bushings for alternating voltages above 1 000 V

---------------------- Page: 13 ----------------------

– 8 – 62271-205 © IEC:2008
IEC 60265-2, High-voltage switches – Part 2: High-voltage switches for rated voltages of 52
kV and above
IEC 62271-209, High-voltage switchgear and controlgear – Part 209: Cable connections for
gas-insulated metal-enclosed switchgear for rated voltages above 52 kV – Fluid-filled and
extruded insulation cables – Fluid-filled and dry-type cable-terminations
IEC 61462, Composite hollow insulators – Pressurized and unpressurized insulators for use in
electrical equipment with rated voltage greater than 1 000 V – Definitions, test methods,
acceptance criteria and design recommendations
IEC/TR 61639, Direct connection between power transformers and gas-insulated metal-
enclosed switchgear for rated voltages of 72,5 kV and above
IEC 61936-1, Power installations exceeding 1 kV a.c. – Part 1: Common rules
IEC 62155, Hollow pressurized and unpressurized ceramic and glass insulators for use in
electrical equipment with rated voltages greater than 1 000 V
IEC 62271-1, High-voltage switchgear and controlgear – Part 1:Common specifications
IEC 62271-100, High-voltage switchgear and controlgear – Part 100: High-voltage alternating-
current circuit-breakers
IEC 62271-102, High-voltage switchgear and controlgear – Part 102: Alternating current
disconnectors and earthing switches
IEC 62271-108, High-voltage switchgear and controlgear – Part 108: High-voltage alternating
current disconnecting circuit-breakers for rated voltages of 72,5 kV and above
IEC 62271-203, High-voltage switchgear and controlgear – Part 203: Gas-insulated metal-
enclosed switchgear for rated voltages above 52 kV
...