IEC 62271-200:2021/AMD1:2024
(Amendment)Amendment 1 - High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
Amendment 1 - High-voltage switchgear and controlgear - Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
Amendement 1 - Appareillage à haute tension - Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
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IEC 62271-200 ®
Edition 3.0 2024-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
High-voltage switchgear and controlgear –
Part 200: AC metal-enclosed switchgear and controlgear for rated voltages
above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de
tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
IEC 62271-200:2021-05/AMD1:2024-06(en-fr)
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IEC 62271-200 ®
Edition 3.0 2024-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
High-voltage switchgear and controlgear –
Part 200: AC metal-enclosed switchgear and controlgear for rated voltages
above 1 kV and up to and including 52 kV
Appareillage à haute tension –
Partie 200: Appareillage sous enveloppe métallique pour courant alternatif de
tensions assignées supérieures à 1 kV et inférieures ou égales à 52 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-9058-3
– 2 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 200: AC metal-enclosed switchgear and controlgear for rated
voltages above 1 kV and up to and including 52 kV
AMENDMENT 1
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
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 62271-200:2021 has been prepared by subcommittee 17C: Assemblies,
of IEC technical committee 17: High-voltage switchgear and controlgear.
The text of this Amendment is based on the following documents:
Draft Report on voting
17C/933/FDIS 17C/938/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
© IEC 2024
The language used for the development of this Amendment is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
___________
INTRODUCTION
Add, at the end of the existing text, the following new paragraph:
Generally, gas-filled medium-voltage designs have design pressures below 500 kPa, as
mentioned for example in the introduction of EN 50187.
2 Normative references
Delete the existing reference to IEC 62271-203:2011.
Add the following normative reference:
ISO 4126-2, Safety devices for protection against excessive pressure – Part 2: Bursting disc
safety devices
3 Terms and definitions
Replace the existing 3.6.101 term, definition and notes to entry with the following:
3.6.101
loss of service continuity category
LSC
category defining the possibility to keep other high-voltage compartments
and/or functional units energized when opening its connection compartment or any other of its
high-voltage compartment(s) accessible in normal use, as stated in definitions 3.5.110 and
3.5.111, giving access to at least part of the high-voltage circuit contained within
Note 1 to entry: The LSC category describes the extent to which the assembly is intended to remain operational
where access to a high-voltage compartment is provided. The extent to which it is considered necessary to open
high-voltage compartments of an installation in service might be dependent on several aspects (refer to 9.101).
Note 2 to entry: The LSC category does not describe or relate to different levels of reliability of assemblies (refer
to 9.101).
Note 3 to entry: In relation to providing access to high-voltage compartments and the associated service continuity,
four categories are defined: LSC1, LSC2, LSC2A, LSC2B (refer to Annex D).
– 4 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
6 Design and construction
6.10 Pressure/level indication
Replace the existing sentence of this subclause with the following new text:
Subclause 6.10 of IEC 62271-1:2017 is applicable with the following addition to 6.10.1 of
IEC 62271-1:2017.
For gas-filled compartments where the minimum functional pressure exceeds 200 kPa (absolute
pressure at 20 °C) an indication shall be provided when the absolute pressure at 20 °C has
fallen below the minimum functional level (refer to 3.6.114).
NOTE 1 The indication might include monitoring of pressure (density).
Closed pressure systems with minimum functional pressure above 200 kPa (absolute pressure)
shall have a defined alarm pressure (density) level.
NOTE 2 Alarm pressure (density) is defined in IEC 62271-1:2017, 3.6.5.3 and 3.6.5.4.
An example of pressure coordination chart is shown in Figure E.1.
6.102.2 Covers and doors
Replace the existing item b) with the following new item:
b) Covers and doors that give access to interlock-controlled accessible or procedure-based
accessible compartments
These covers and doors shall be provided if there is a need to access the compartment for
normal use as stated by the manufacturer. These covers and doors shall not require tools
for their opening or removal. It is permissible that the manipulation of some fixing elements
for their opening or removal is required, and they shall have the following features:
– interlock controlled accessible compartments shall be provided with interlocking devices
so that opening of the compartment shall only be possible when the high-voltage parts
contained in the compartment being made accessible are isolated and earthed, or are in
the disconnected position with corresponding shutters closed;
– procedure-based accessible compartments shall be provided with provision for locking,
e.g. padlocking. Suitable procedures should be put in place by the user to ensure that a
procedure-based accessible compartment is opened only when the high-voltage parts
contained in the compartment being made accessible are isolated and earthed, or in the
disconnected position with corresponding shutters closed. Procedures can be dictated
by the legislation of the country of installation or by the user safety documentation.
NOTE Examples of fixing elements are screws, bolts, nuts, turning fasteners and sliding fasteners.
If interlock-controlled or procedure-based accessible compartments have covers that can
be opened by tools, other than those that are interlocked or locked, proper procedures or
specific warning labels should be applied.
Access to a closed interlock-controlled or procedure-based compartment through covers
needing only the use of tools to be opened or removed is not intended for normal use. Once
an interlocked or locked door or cover of an accessible compartment is opened or removed
for normal use, it is permissible that the opening or removing of other covers of the same
accessible compartment requires the use of tools.
6.103.1 General
Replace the existing NOTE 1 with the following new note:
NOTE 1 Only interlock-controlled accessible compartments and procedure based accessible compartments are
considered when defining the LSC category of a functional unit.
© IEC 2024
Replace the existing fifth paragraph after NOTE 1 with the following new paragraph:
The LSC category can only be assigned to functional units that include a connection
compartment. This implies that e.g. a bus-sectionaliser or bus-coupler functional unit will have
no LSC category, refer to Figure 8 and Figure 9.
6.103.2.1 General
Replace, in the existing second sentence of the second paragraph, "are normally filled" with
"are filled".
Add, after the existing second paragraph, the following new NOTE 1:
NOTE 1 The non-corrosive conditions that prevail inside gas-filled compartments are maintained by appropriate
measures such as filter material to adsorb humidity and decomposition products, if any.
Replace the existing last paragraph of this subclause with the following new paragraph:
Materials used in the construction of enclosures should be of known and certified minimum
physical properties on which pressure tests are based (see 7.103). The manufacturer is
responsible for the selection of the materials and the maintenance of these minimum properties,
based on certification of the material supplier or tests conducted by the manufacturer, or both.
Renumber the existing NOTE as NOTE 2.
6.103.2.2 Design
Replace the existing first paragraph of this subclause with the following new paragraph:
The design of a fluid filled compartment shall be based on the nature of the fluid, the design
temperature and the design pressure as defined in this document.
Replace the existing third and fourth paragraphs of this subclause with the following new text:
The design pressure of a compartment is equal to the maximum pressure difference between
the fluid inside the compartment at design temperature that the fluid used for insulation can
reach under specified maximum service conditions, and the surrounding media, like ambient air
or insulation fluids in other compartments. Therefore, the design pressure calculation shall also
consider:
a) the full differential pressure possible across the compartment walls or partitions, including
any evacuation process if used during filling or maintenance operations;
b) the resulting pressure in the event of an accidental leak between the compartments in the
case of adjacent compartments having different service pressures.
Add, after the last existing paragraph of this subclause, the following new text:
The design of the fluid-filled compartment shall also take into account the possibility of the
occurrence of an internal arc fault.
In normal service, the pressure inside a gas-filled compartment varies from the filling pressure
p with the gas temperature variations, at different service conditions, and possible leaks.
re
Several pressure values shall be coordinated when designing a fluid-filled compartment. An
example is shown in Figure E.1.
– 6 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
6.103.2.3 Tightness
Delete the existing third paragraph of this subclause (now moved to 6.10).
6.103.2.4 Pressure relief of fluid-filled compartments
Replace the existing second sentence of this subclause with the following new sentence:
Pressure relief devices shall operate with relative pressure above 1,3 times the design
pressure.
7 Type tests
7.102.2 Mechanical and electromechanical interlocks and locking devices
Replace the existing sentence below the 5 dashed items of the fourth paragraph with the
following new text:
The force shall be applied at the midpoint of the gripping part of the handle or actuator with the
following considerations:
– For handles consisting of one or more levers, the gripping part shall be defined by the
manufacturer before testing. In this case, two different scenarios are considered:
• if intended for gripping with one hand, the gripping part shall not extend more than
100 mm from the end of the lever;
• if intended for gripping with two hands next to each other, the gripping part shall not
extend more than 200 mm from the end of the lever.
– For handles where the lever is extensible or sliding, the lever shall be at the longest possible
length, and the full force shall be applied to only one of the gripping parts of the lever(s), if
more than one exists.
7.103.1 Pressure withstand test for gas-filled compartments with pressure relief devices
Replace the existing content of this subclause with the following new text:
Each design of a gas-filled compartment equipped with its pressure relief devices(s) shall be
subjected to pressure tests as follows:
– Adjacent compartments (if any) shall be set at a pressure not higher than the minimum
functional pressure of those compartments. If the manufacturer's instructions reference
allow for maintenance of those compartments, they shall be at atmospheric pressure.
Alternatively, they even may be evacuated, if allowed by the manufacturer.
NOTE 1 This test configuration covers the over-pressure behaviour under intended service conditions.
NOTE 2 The design pressure (relative pressure) calculation already considers the situation of adjacent
compartment evacuated, if allowed by the manufacturer.
– The ambient temperature shall be between 15 °C and 30 °C.
NOTE 3 The temperature range is in accordance with ISO 4126-2.
– For all the following pressure tests, the relative pressure shall be increased with a pressure
rise not exceeding 400 kPa/min in order to reach a value of 1,3 times the design pressure
of the compartment for a period of 1 min. The pressure relief device shall not operate and
the compartment shall not show signs of distress or any distortion likely to affect the
operation of the assembly.
© IEC 2024
– To determine the highest possible value at which the pressure relief device operates, two
possible scenarios shall be considered:
• if no certificate is available for the pressure relief device (for example, in case of integral
pressure relief devices), the operating pressure of the pressure relief device shall be
verified by testing 5 samples of the pressure relief on the specific compartment design;
• if a certificate according to ISO 4126-2 for the pressure relief device is available for the
range of service temperatures and up to the design temperature, it shall be verified that
the operating pressure is in the range given by the certificate by a single test on the
specific compartment design.
– For both scenarios, the relative pressure shall be increased with a pressure rise not
exceeding 400 kPa/min up to the pressure relief device operates, as designed by the
manufacturer.
• The opening pressure(s) shall be recorded in the type test report.
• A visual inspection of the orientation of the pressure relief device should be performed.
The direction of escaping gases should be indicated in the test report.
– Then, a verification of the safety margin of the compartment with respect to the pressure
relief operation shall be performed as follows:
• the pressure relief device shall be blocked or reinforced without impacting the withstand
pressure of the compartment;
• then, the relative pressure shall be increased with a pressure rise not exceeding
400 kPa/min up to the highest value where the pressure relief would operate (by
certificate or test mentioned above) multiplied by a safety factor. Two possible cases
shall be considered:
– if a certificate is available for the pressure relief device for the range of service
temperatures and up to the design temperature, the applied safety factor to the upper
value of operation given by the certificate shall be 1,1;
– if no certificate is available for the pressure relief device (for example, in case of
integral pressure relief devices), the highest opening pressure recorded in the 5
previous tests is taken and the applied safety factor shall be 1,5.
• the test pressure level shall be maintained for 1 min;
• the compartment may be distorted, but it shall not rupture during the test.
7.103.2 Pressure withstand test for gas-filled compartments without pressure-relief
devices
Replace the existing title and text of this subclause with the following new title and text:
7.103.2 Pressure withstand test for gas-filled compartments without pressure relief
devices
Each design of a gas-filled compartment without pressure relief device shall be subjected to a
pressure test according to the following procedure:
– Adjacent compartments (if any) shall be set at a pressure not higher than the minimum
functional pressure of those compartments. If the manufacturer's instructions reference
allow for maintenance of those compartments, they shall be at atmospheric pressure.
Alternatively, they even may be evacuated, if allowed by the manufacturer.
NOTE 1 This test configuration covers the over-pressure behaviour under intended service conditions.
NOTE 2 The design pressure (relative pressure) calculation already considers the situation of adjacent
compartment evacuated, if allowed by the manufacturer.
– The ambient temperature shall be between 15 °C and 30 °C.
– 8 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
– The relative pressure shall be increased with a pressure rise not exceeding 400 kPa/min up
to three times the design pressure of the compartment, except for those with cast aluminium
walls with design pressure above 300 kPa where the upper value shall be five times the
design pressure. The test pressure level shall be maintained for 1 min. After the test, the
compartment may be distorted but it shall not rupture.
7.105.2 Test conditions
Replace the existing paragraph between NOTE 1 and NOTE 2 with the following text:
If, during the test, an arc ignites in another already arc-tested compartment of the same test
object (see 7.105.3), the test is not valid. However, if during the test, an arc ignites in a non-
previously arc-tested compartment(s) of the same test object, the test shall be regarded as valid
for the compartment where the arc was initiated, under the condition that it can be proven that
the ignition was the consequence of design construction, as declared by the manufacturer
before the test. Examples of such design constructions are:
– a lower short-circuit withstand of part of the circuit, upstream in the current path from the
compartment under test;
– burn-through, or opening of pressure relief flaps, to another compartment.
The manufacturer’s declaration shall be referred to in the test report.
The other affected compartment(s) shall be (or shall have been) tested with the point of initiation
as required in A.5.2.1. The number of phases to be tested shall be in accordance with A.5.2.1
and Table A.1 provided that the arc initiation involves at least the number of phases involved
in this take-over ignition.
8 Routine tests
8.103 Pressure tests of gas-filled compartments
Replace the existing text of this subclause with the following new text:
Each gas-filled compartment with a filling pressure above 150 kPa (absolute pressure) shall
withstand during 1 min:
– 2,0 times the design pressure for cast resin, ceramic or cast aluminium gas-filled
compartments without pressure relief device;
– 1,3 times the design pressure in other cases.
After this test the compartment shall show no signs of distress or any distortion likely to affect
the operation of the assembly.
9 Guide to the selection of switchgear and controlgear (informative)
9.101.2 Architecture and accessibility to high-voltage compartments
Replace the existing content of this subclause with the following new text:
The forms of internal partitioning defined in this document attempt to balance requirements as
service continuity and maintainability. In this subclause, some guidance is given regarding the
extent to which the different forms can provide maintainability.
NOTE 1 Temporary inserted partitions, to prevent accidental contact with live parts while performing certain
maintenance procedures, are addressed in 11.5.
NOTE 2 Possible alternative maintenance procedures, e.g. the establishment of safety distances and/or setting up
and use of temporary barriers, are outside the scope of this document.
© IEC 2024
The complete description of an assembly includes the list and type of high-voltage
compartments, e.g. busbar compartment, circuit-breaker compartment, etc., the type of
accessibility provided to each and the pattern (withdrawable/non-withdrawable).
There are four types of high-voltage compartments, three being accessible to the user and one
non-accessible.
For accessible high-voltage compartments there are three methods of controlling the opening
of these compartments:
– the first is by use of interlocks to ensure that all live parts inside are isolated and earthed
before opening or are in the disconnected position with corresponding shutters closed. Such
compartments are designated "interlock-controlled accessible compartments";
NOTE 3 Generally, it can be possible to open shutters or temporary inserted partitions manually after accessing
the high-voltage compartment.
– the second relies on user procedure and locking to ensure safety, the compartment being
supplied with facilities for padlocking or equivalent; this type of compartment is designated
a "procedure-based accessible compartment";
– the third does not provide any built-in feature to ensure electrical safety before opening.
Such compartments need tools to be opened; they are designated "tool-based accessible
compartments".
The first two types of accessible high-voltage compartment are available to the user to be
opened for normal use (see 3.1.107). The opening of these two types of accessible high-voltage
compartments can additionally require manipulating some fixing elements for opening. These
compartments can also have other covers and/or doors requiring tools for opening following a
proper procedure and identified with specific warning labels about the electrical risk behind if
opened or removed.
If the access to a high-voltage compartment is only limited by the need of tools for opening,
then this is a clear indication that this compartment is not designed for opening in normal use.
The user should take other measures to ensure safety, and possibly to ensure performance
integrity, e.g. insulating conditions. When made accessible, attention should be paid to the
requirement (if any) to operate the switching devices without voltage/current on the main circuit
with doors and covers open as part of the maintenance procedures.
Non-accessible high-voltage compartments (see 3.5.113) should not be opened by the user as
the opening could destroy the integrity of the compartment. Sometimes, an indication not to
open is provided on, or is evident by a feature of the compartment, e.g. a completely welded
GIS tank. However, by default, every high-voltage compartment not declared accessible by the
manufacturer in the manufacturer’s instructions reference, is considered as a non-accessible
compartment.
9.101.3 Service continuity of the switchgear
Replace the existing second to sixth paragraphs of this subclause with the following new
paragraphs:
For each functional unit of an assembly, the Loss of Service Continuity category (LSC)
describes the extent to which other high-voltage compartments and/or functional units may
remain energised when the connection compartment or any other high-voltage compartment of
this functional unit accessible in normal use is opened. See 3.5.110 and 3.5.111.
Category LSC1: this form is not intended to provide service continuity when opening any
accessible compartment of the functional unit for normal use. Complete disconnection of the
functional unit from the system and the isolation and earthing of the high-voltage conductive
parts is required before opening any compartment.
– 10 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
Category LSC2 family: these forms are intended to allow maximum continuity of service of the
network during access to the high-voltage compartments of the functional unit accessible in
normal use. It means that opening of accessible high-voltage compartments of a functional unit
in normal use is possible while keeping the other functional units of the same section energised.
This implies that at least one busbar may be kept energised. Insertion of a movable partition
may be used to achieve this category, refer to 11.5.
LSC2 requires as a minimum that it is possible to open the connection compartment of the
functional unit while keeping the busbar(s) live. There may or may not be other high-voltage
compartments that are accessible in normal use (e.g. main switching device compartment).
LSC2A is applicable to a functional unit that has compartments (at least one), other than the
high-voltage connection compartment, that are accessible in normal use (for instance the main
switching device compartment); this requires that it is allowed, after isolating and earthing the
relevant high-voltage circuit, or moving the withdrawable part to the disconnected position with
corresponding shutters closed, to open such high-voltage compartment while keeping the
busbar(s) energised (it is of course not allowed to open the live busbar compartment(s) unless
the live conductors are embedded by solid insulation material and comply with at least
protection category PA of IEC 62271-201:2014).
Replace the existing item 8) of the list of examples with the following:
8) No LSC assigned (Figure 8): a bus-sectionaliser functional unit with a tool-based accessible
compartment and both busbar sections in one compartment. No LSC can be assigned,
because no connection compartment is present in this functional unit. Furthermore, the only
accessible compartment is a tool-based one, therefore not accessible in normal use (see
3.5.112) as defined in 3.6.101.
Figure 8 – LSC1
Replace the existing title of this figure with the following new title:
Figure 8 – No LSC assigned
Add, after the existing Annex D, the following new Annex E:
© IEC 2024
Annex E
(informative)
Pressure coordination chart for gas-filled compartments
NOTE To be comparable, all pressures are represented as relative pressures in this figure.
Figure E.1 – Example of pressure coordination chart
___________
– 12 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILLAGE À HAUTE TENSION –
Partie 200: Appareillage sous enveloppe métallique pour courant
alternatif de tensions assignées supérieures à 1 kV
et inférieures ou égales à 52 kV
AMENDEMENT 1
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour objet
de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. À cet effet, l’IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et
des Guides (ci-après dénommés "Publication(s) de l’IEC"). Leur élaboration est confiée à des comités d'études,
aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l’IEC, participent également
aux travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon
des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l’IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l’IEC
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de l’IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l’IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l’IEC s'engagent, dans toute
la mesure possible, à appliquer de façon transparente les Publications de l’IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l’IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L’IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques
de conformité de l’IEC. L’IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l’IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l’IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les dépenses
découlant de la publication ou de l'utilisation de cette Publication de l’IEC ou de toute autre Publication de l’IEC,
ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L'IEC attire l'attention sur le fait que la mise en application du présent document peut entraîner l'utilisation d'un ou
de plusieurs brevets. L'IEC ne prend pas position quant à la preuve, à la validité et à l'applicabilité de tout droit
de brevet revendiqué à cet égard. À la date de publication du présent document, l'IEC n'a pas reçu notification
qu'un ou plusieurs brevets pouvaient être nécessaires à sa mise en application. Toutefois, il y a lieu d'avertir
les responsables de la mise en application du présent document que des informations plus récentes
sont susceptibles de figurer dans la base de données de brevets, disponible à l'adresse https://patents.iec.ch.
L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de brevets.
L’Amendement 1 à l’IEC 62271-200:2021 a été établi par le sous-comité 17C: Ensembles,
du comité d'études 17 de l'IEC: Appareillage haute tension.
© IEC 2024
Le texte de cet Amendement est issu des documents suivants:
Projet Rapport de vote
17C/933/FDIS 17C/938/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l’élaboration de cet Amendement est l’anglais.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé
selon les Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles
sous www.iec.ch/members_experts/refdocs. Les principaux types de documents développés
par l'IEC sont décrits plus en détail sous www.iec.ch/publications/.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l’IEC sous webstore.iec.ch dans les données relatives au document
recherché. À cette date, le document sera
• reconduit,
• supprimé, ou
• révisé.
___________
INTRODUCTION
Ajouter, à la fin du texte existant, le nouvel alinéa suivant:
Les appareillages moyenne tension à remplissage de gaz ont généralement des pressions
de calcul inférieures à 500 kPa, comme cela est mentionné par exemple dans l'introduction
de l’EN 50187.
2 Références normatives
Supprimer la référence existante à l’IEC 62271-203:2011.
Ajouter la référence normative suivante:
ISO 4126-2, Dispositifs de sécurité pour protection contre les pressions excessives – Partie 2:
Dispositifs de sûreté à disque de rupture
3 Termes et définitions
Remplacer le terme 3.6.101 existant, la définition et les notes à l’article par ce qui suit:
3.6.101
catégorie de perte de continuité de service
LSC
catégorie définissant la possibilité de maintenir sous tension
d’autres compartiments à haute tension et/ou unités fonctionnelles quand son compartiment
connexions ou l’un de ses autres compartiments à haute tension accessibles en utilisation
normale est ouvert, comme cela est défini aux 3.5.110 et 3.5.111, donnant accès à au moins
une partie du circuit à haute tension contenu dans celui-ci
– 14 – IEC 62271-200:2021/AMD1:2024
© IEC 2024
Note 1 à l’article: La catégorie LSC décrit le degré selon lequel l’ensemble est destiné à rester opérationnel
dans le cas où l’accès à un compartiment à haute tension est prévu. Le degré selon lequel l’ouverture
d’un compartiment à haute tension d’une installation en service est considérée comme nécessaire peut dépendre
de plusieurs facteurs (se reporter au 9.101).
Note 2 à l’article: La catégorie LSC ne décrit pas les différents niveaux de fiabilité des ensembles ni ne s'y rapporte
(se reporter au 9.101).
Note 3 à l’article: En ce qui concerne l'accès aux compartiments à haute tension et la continuité de service associée,
quatre catégories sont définies: LSC1, LSC2, LSC2A, LSC2B (se reporter à l’Annexe D).
Note 4 à l'article: L’abréviation "LSC" est dérivée du terme anglais développé correspondant "loss of service
continuity".
6 Conception et construction
6.10 Indication de la pression/du niveau
Remplacer la phrase existante de ce paragraphe par le nouveau texte suivant:
Le paragraphe 6.10 de l'IEC 62271-1:2017 s’applique avec l’ajout suivant au 6.10.1 de
l'IEC 62271-1:2017.
Pour les compartiments à remplissage de gaz dont la pression minimale de fonctionnement
dépasse 200 kPa (pression absolue à 20 °C), une indication doit être fournie quand la pression
absolue à 20 °C est tombée au-dessous du niveau minimal de fonctionnement (se reporter
au 3.6.114).
NOTE 1 L’indication peut inclure la surveillance de la pression (masse volumique).
Les systèmes à pression autonome dont la pression minimale de fonctionnement est supérieure
à 200 kPa (pression absolue) doivent avoir un niveau défini de pression (masse volumique)
d’alarme.
NOTE 2 La pression (masse volumique) d’alarme est définie aux 3.6.5.3 et 3.6.5.4 de l’IEC 62271-1:2017.
Un exemple de diagramme de coordination de pression est présenté à la Figure E.1.
6.102.2 Capots et portes
Remplacer le point b) existant par le nouveau point suivant:
b) Capots et portes donnant accès à des compartiments accessibles contrôlés par verrouillage
ou selon procédure
Ces capots et portes doivent être fournis s’il est nécessaire d’accéder au compartiment pour
une utilisation normale telle qu’elle est définie par le fabricant. Ces capots et portes
ne doivent pas exiger d'outils pour leur ouverture ou leur retrait. Il est admis
que la manipulation de certains éléments de fixation pour leur ouverture ou leur retrait
soit nécessa
...
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