IEC 62271-107:2012

High-voltage switchgear and controlgear - Part 107: Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV

IEC 62271-107:2012 applies to three-pole operated units for distribution systems that are functional assemblies of a circuit-switcher and current-limiting fuses designed so as to be capable of:
- breaking, at the rated recovery voltage, any load or fault current up to and including the rated short-circuit breaking current;
- making, at the rated voltage, circuits to which the rated short-circuit breaking current applies. This second edition cancels and replaces the first edition, published in 2005. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition.
- the reference to IEC 60694 has been changed to IEC 62271-1;
- the new clauses and subclauses from IEC 62271-1 have been added and where necessary new wording has been provided;
- the normative references have been updated: IEC 60265-1 to IEC 62271-103, IEC 60787 to IEC/TR 60787, IEC 60466 to IEC 62271-201, and IEC/TR 60787 was moved to the bibliography;
- the figures and tables have been placed in the document where they are first cited;
- the numbering of figures and tables has been changed to obtain the correct order;
- the definition of NSDD was deleted. This definition is included in IEC 62271-1;
- the acceptance criteria have been aligned with 6.101.4 of IEC 62271-103:2011;
- the various provisions expressed about "extension of the validity of type tests" have been grouped under 6.103: some of the rules were duplicated in Clauses 6 and 8, and it seems better fitted to deal within each type test sub-clause only with the type test to be performed. Conditions have not been changed, but the wording is clearer;
- new numbering of subclauses in Clauses 8 and 9 to avoid conflict with clauses from IEC 62271-1.
This publication is to be read in conjunction with IEC 62271-1:2007.

Appareillage à haute tension - Partie 107: Circuits-switchers fusiblés pour courant alternatif de tension assignée supérieure à 1 kV et jusqu'à 52 kV inclus

La CEI 62271-107:2012 s'applique aux appareils à man uvre tripolaire pour les réseaux de distribution, qui sont des ensembles fonctionnels constitués d'un circuit-switcher et de fusibles limiteurs, conçus de façon à être capables:
- de couper, à la tension de rétablissement assignée, tout courant de charge ou de défaut jusqu'au pouvoir de coupure en court-circuit assigné y compris;
- d'établir, à la tension assignée, les circuits pour lesquels le courant de court-circuit assigné s'applique. Cette deuxième édition annule et remplace la première édition parue en 2005. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente.
- la référence à la CEI 60694 a été remplacée par la CEI 62271-1;
- De nouveaux articles et paragraphes de la CEI 62271-1 ont été ajoutés et une nouvelle terminologie a été proposée lorsque nécessaire.
- les références normatives ont été mises à jour: CEI 60265-1 en CEI 62271-103, CEI 60787 en CEI/TR 60787, CEI 60466 en CEI 62271-201, et CEI/TR 60787 a été déplacée dans la bibliographie;
- les figures et les tableaux ont été placés à l'endroit où ils sont cités en premier dans le document;
- la numérotation des figures et des tableaux a été modifiée afin d'obtenir l'ordre convenable;
- la définition de la (décharge disruptive non entretenue (NSDD) a été supprimée. Cette définition est incluse dans la CEI 62271-1;
- les critères d'acceptation ont été alignés avec le 6.101.4 de la CEI 62271-103:2011;
- regroupement sous le 6.103 des diverses dispositions exprimées concernant "l'extension de la validité des essais de type". Certaines des règles étaient dupliquées dans les Articles 6 et 8 et il semble plus approprié de ne traiter dans chaque paragraphe que l'essai de type à effectuer. Les conditions n'ont pas été modifiées, mais la terminologie est plus claire;
- nouvelle numérotation des paragraphes des Articles 8 et 9 pour éviter les conflits avec les articles de la CEI 62271-1.
Cette publication doit être lue conjointement avec la CEI 62271-1:2007.

General Information

• Status: Published
• Publication Date: 28-May-2012
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SC 17A - Switching devices
• Drafting Committee: MT 30 - TC 17/SC 17A/MT 30
• Current Stage: DELPUB - Deleted Publication
• Start Date: 06-Oct-2017
• Completion Date: 28-May-2019

Relations

• Revised: IEC 62271-107:2019 - High-voltage switchgear and controlgear - Part 107: Alternating current fused circuit-switchers for rated voltages above 1 kV up to and including 52 kV
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62271-107


®


Edition 2.0 2012-05



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE


High-voltage switchgear and controlgear –
Part 107: Alternating current fused circuit-switchers for rated voltages above
1 kV up to and including 52 kV

Appareillage à haute tension –
Partie 107: Circuits-switchers fusiblés pour courant alternatif de tension
assignée supérieure à 1 kV et jusqu'à 52 kV inclus



IEC 62271-107:2012

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---------------------- Page: 2 ----------------------
IEC 62271-107



®



Edition 2.0 2012-05







INTERNATIONAL





STANDARD







NORME



INTERNATIONALE











High-voltage switchgear and controlgear –

Part 107: Alternating current fused circuit-switchers for rated voltages above

1 kV up to and including 52 kV




Appareillage à haute tension –

Partie 107: Circuits-switchers fusiblés pour courant alternatif de tension


assignée supérieure à 1 kV et jusqu'à 52 kV inclus














INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX X


ICS 29.130.10 ISBN 978-2-83220-119-0



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 62271-107 © IEC:2012



CONTENTS


FOREWORD . 5

1 General . 7

1.1 Scope . 7

1.2 Normative references . 7

2 Normal and special service conditions . 8

3 Terms and definitions . 8


3.1 General terms . 8
3.2 Assemblies of switchgear and controlgear . 8
3.3 Parts of assemblies . 8
3.4 Switching devices . 8
3.5 Parts of switchgear and controlgear . 9
3.6 Operation . 9
3.7 Characteristic quantities . 10
3.101 Fuses . 12
4 Ratings . 12
4.1 Rated voltage (U ) . 13
r
4.2 Rated insulation level . 13
4.3 Rated frequency (f ) . 13
r
4.4 Rated normal current and temperature rise . 13
4.4.1 Rated normal current (I ) . 13
r
4.4.2 Temperature rise. 13
4.4.101 Rated maximum thermal current (I ) . 13
th
4.5 Rated short-time withstand current (I ) . 13
k
4.6 Rated peak withstand current (I ) . 13
p
4.7 Rated duration of short circuit (t ) . 14
k
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ) . 14
a
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits . 14
4.10 Rated pressure of compressed gas supply for controlled pressure systems . 14
4.11 Rated filling levels for insulation and/or operation . 14
4.101 Rated short-circuit breaking current I . 14
sc

4.102 Rated transient recovery voltage . 14
4.103 Rated short-circuit making current . 14
4.104 Rated take-over current . 15
5 Design and construction . 15
5.1 Requirements for liquids in fused circuit-switchers . 15
5.2 Requirements for gases in fused circuit-switchers. 15
5.3 Earthing of fused circuit-switchers . 15
5.4 Auxiliary and control equipment . 15
5.5 Dependent power operation . 16
5.6 Stored energy operation . 16
5.7 Independent manual or power operation (independent unlatched operation) . 16
5.8 Operation of releases . 16
5.9 Low- and high- pressure interlocking and monitoring devices. 16
5.10 Nameplates . 16

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62271-107 © IEC:2012 – 3 –


5.11 Interlocking devices . 17

5.12 Position indication . 17

5.13 Degrees of protection by enclosures . 17

5.14 Creepage distances for outdoor insulators . 17

5.15 Gas and vacuum tightness . 17

5.16 Liquid tightness . 17

5.17 Fire hazard (flammability) . 17

5.18 Electromagnetic compatibility (EMC) . 17

5.19 X-ray emission . 17

5.20 Corrosion . 17

5.101 Linkages between the fuse striker(s) and the circuit-switcher release . 18
5.102 Low over-current conditions (long fuse pre-arcing time conditions) . 18
6 Type tests . 18
6.1 General . 18
6.1.1 Grouping of tests . 19
6.1.2 Information for identification of specimens . 19
6.1.3 Information to be included in type-test reports . 19
6.2 Dielectric tests . 19
6.3 Radio interference voltage (r.i.v.) test . 19
6.4 Measurement of the resistance of circuits . 19
6.5 Temperature-rise tests . 19
6.6 Short-time withstand current and peak withstand current tests . 19
6.7 Verification of the protection . 19
6.8 Tightness tests . 20
6.9 Electromagnetic compatibility tests (EMC) . 20
6.10 Additional tests on auxiliary and control circuits . 20
6.11 X-radiation test procedure for vacuum interrupters . 20
6.101 Making and breaking tests . 20
6.101.1 Conditions for performing the tests. 20
6.101.2 Test duty procedures . 25
6.101.3 Behaviour of the fused circuit-switcher during tests . 30
6.101.4 Condition of the apparatus after tests . 30
6.102 Mechanical operation tests . 31
6.102.1 Condition of fused circuit-switcher during and after mechanical
operation tests . 32

6.102.2 Condition of the fuses during and after mechanical operation tests . 32
6.103 Extension of validity of type tests . 32
6.103.1 Dielectric properties . 32
6.103.2 Temperature rise. 32
6.103.3 Making and breaking . 33
7 Routine tests . 33
7.101 Mechanical operating tests . 33
8 Guide for the selection of fused circuit-switchers . 34
8.1 Selection of rated values . 34
8.2 Continuous or temporary overload due to changed service conditions . 34
8.101 Additional criteria . 34
8.102 Short-circuit breaking current . 34
8.103 Rated maximum thermal current . 35
8.104 Currents between thermal current and I of the fuses . 35
3

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– 4 – 62271-107 © IEC:2012


8.105 Transfer current . 35

8.106 Take-over current . 35

8.107 Extension of the validity of type tests . 35

8.108 Operation . 36

8.109 Comparison of performances of fused circuit-switchers with performances

of switch-fuse combinations and circuit-breakers . 36

9 Information to be given with enquiries, tenders and orders . 37

9.1 Information to be given with enquiries and orders . 37

9.2 Information to be given with tenders . 37

10 Rules for transport, storage, installation, operation and maintenance . 38

11 Safety . 38
12 Influence of the product on the environment . 38
Annex A (informative) Applicability of the rated take-over current test duty . 39
Bibliography . 47

Figure 1 – Characteristics for determining the take-over current . 15
Figure 2 – Arrangement of test circuits for test duties TD , TD , TD and TD . 22
Ith Isc Ito Ilow
Figure 3 – Representation of a specified TRV by a two-parameter reference line and a
delay line . 24
Figure 4 – Example of a two parameters envelope for a TRV . 25
Figure 5 – Measurement of the power frequency recovery voltage with striker operation . 27
Figure A.1 – Visualization of the application margin for a given fuse . 41

Table 1 – Nameplate markings . 16
Table 2 – Summary of test parameters for test duties . 29
Table 3 – Comparison between switch-fuse combination and fused circuit-switcher . 37
Table 4 – Comparison between fused circuit-switcher and circuit breaker . 37
Table A.1 – Minimum application margin Am according to fuse characteristic . 44
Table A.2 – Minimum protection time delay . 45
Table A.3 – Examples of possible need for time delay . 45

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62271-107 © IEC:2012 – 5 –


INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________



HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –



Part 107: Alternating current fused circuit-switchers

for rated voltages above 1 kV up to and including 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
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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
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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 62271-107 has been prepared by subcommittee 17A: High voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
This second edition cancels and replaces the first edition, published in 2005. It constitutes a
technical revision.
This edition includes the following significant technical changes with respect to the previous
edition.
– the reference to IEC 60694 has been changed to IEC 62271-1;
– the new clauses and subclauses from IEC 62271-1 have been added and where
necessary new wording has been provided;
• 4.11 Rated filling levels for insulation and/or operation
• 5.19 X-ray emission
• 5.20 Corrosion

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– 6 – 62271-107 © IEC:2012


• 6.10 Additional tests on auxiliary and control circuits


• 6.11 X-radiation test procedure for vacuum interrupters

• 12 Influence of the product on the environment

– the normative references have been updated: IEC 60265-1 to IEC 62271-103, IEC 60787

to IEC/TR 60787, IEC 60466 to IEC 62271-201, and IEC/TR 60787 was moved to the

bibliography;

– the figures and tables have been placed in the document where they are first cited;


– the numbering of figures and tables has been changed to obtain the correct order;

– the definition of NSDD was deleted. This definition is included in IEC 62271-1;

– the acceptance criteria have been aligned with 6.101.4 of IEC 62271-103:2011;
– the various provisions expressed about "extension of the validity of type tests" have been
grouped under 6.103: some of the rules were duplicated in Clauses 6 and 8, and it seems
better fitted to deal within each type test sub-clause only with the type test to be
performed. Conditions have not been changed, but the wording is clearer;
– new numbering of subclauses in Clauses 8 and 9 to avoid conflict with clauses from
IEC 62271-1.
The text of this standard is based on the following documents:
FDIS Report on voting
17A/997/FDIS 17A/1004/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.
This International Standard is to be read in conjunction with IEC 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
IEC 62271-1. Amendments to these clauses and subclauses are given under the same
numbering, whilst additional subclauses, are numbered from 101.
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.

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62271-107 © IEC:2012 – 7 –


HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –



Part 107: Alternating current fused circuit-switchers

for rated voltages above 1 kV up to and including 52 kV








1 General


1.1 Scope
Subclause 1.1 of IEC 62271-1:2007 is not applicable, and is replaced as follows.
This part of IEC 62271 applies to three-pole operated units for distribution systems that are
functional assemblies of a circuit-switcher and current-limiting fuses designed so as to be
capable of:
– breaking, at the rated recovery voltage, any load or fault current up to and including the
rated short-circuit breaking current;
– making, at the rated voltage, circuits to which the rated short-circuit breaking current
applies.
They are intended to be used for circuits or applications requiring only a normal mechanical
and electrical endurance capability. Such applications cover protection of HV/LV transformers
for instance, but exclude distribution lines or cables, as well as motor circuits and capacitor
bank circuits.
Short-circuit conditions with low currents, up to the fused circuit-switcher rated take-over
current, are dealt with by supplementary devices (strikers, relays, etc.), properly arranged,
tripping the circuit-switcher. Fuses are incorporated in order to ensure that the short-circuit
breaking capacity of the device is above that of the circuit-switcher.
NOTE 1 In this standard the term "fuse" is used to designate either the fuse or the fuse-link where the general
meaning of the text does not result in ambiguity.
This standard applies to fused circuit-switchers designed with rated voltages above 1 kV up to
and including 52 kV for use on three-phase alternating current systems of either 50 Hz or
60 Hz. Comparison with other existing switching devices is provided in Clause 8.
1
NOTE 2 Other circuit-switchers exist; see reference [1] .

Devices that require a dependent manual operation are not covered by this standard.
Fuses are covered by IEC 60282-1.
Earthing switches forming an integral part of a circuit-switcher are covered by IEC 62271-102.
Installation in enclosure, if any, is covered either by IEC 62271-200 or by IEC 62271-201.
1.2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
___________
1
 Numbers between brackets refer to the Bibliography.

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– 8 – 62271-107 © IEC:2012


undated references, the latest edition of the referenced document (including any

amendments) applies.


IEC 60282-1:2009, High-voltage fuses – Part 1: Current-limiting fuses


IEC 62271-1:2007, High-voltage switchgear and controlgear – Par
...