High-voltage switchgear and controlgear - Part 106: Alternating current contactors, contactor-based controllers and motor-starters

This part of IEC 62271 applies to AC contactors and/or contactor-based controllers and motorstarters designed for indoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 kV and up to and including 24 kV. This document also includes additional requirements for outdoor installations where the equipment is housed in an additional protective enclosure. It is applicable only to three-pole devices for use in three-phase systems, and single-pole devices for use in single-phase systems. Two-pole contactors and starters for use in single-phase systems are subject to agreement between manufacturer and user. Contactors and/or starters dealt with in this document typically do not have adequate short-circuit interruption capability. In this context, this document gives requirements for: - starters associated with separate short-circuit protective devices; - controllers - contactors combined with short-circuit protective devices (SCPD). Contactors intended for closing and opening electric circuits and, if combined with suitable relays, for protecting these circuits against operating overloads are covered in this document. This document is also applicable to the operating devices of contactors and to their auxiliary equipment. Motor-starters intended to start and accelerate motors to normal speed, to ensure continuous operation of motors, to switch off the supply from the motor and to provide means for the protection of motors and associated circuits against operating overloads are dealt with. Motor-starter types included are: - direct-on-line starters; - reversing starters; - two-direction starters; - reduced kVA (voltage) starters; - auto-transformer starters; - rheostatic starters; - reactor starters. This document does not apply to: - circuit-breaker-based motor-starters; - single-pole operation of multi-pole contactors or starters; - two-step auto-transformer starters designed for continuous operation in the starting position; - unbalanced rheostatic rotor starters, i.e. where the resistances do not have the same value in all phases; - equipment designed not only for starting, but also for adjustment of speed; - liquid starters and those of the "liquid-vapour" type; - semiconductor contactors and starters making use of semiconductor contactors in the main circuit; - rheostatic stator starters; - contactors or starters designed for special applications. This document does not deal with components contained in contactors and contactor-based motor-starters, for which individual specifications exist. NOTE 1 Thermal electrical relays are covered by IEC 60255-149. NOTE 2 High-voltage current-limiting fuses are covered by IEC 60282-1 and IEC 60644. NOTE 3 Metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV are covered by IEC 62271-200. NOTE 4 Disconnectors and earthing switches are covered by IEC 62271-102. NOTE 5 High-voltage switches above 1 kV and less than 52 kV are covered by IEC 62271-103. The object of this document is to state: a) the characteristics of contactors and starters and associated equipment; b) the conditions with which contactors or starters comply with reference to: 1) their operation and behaviour, 2) their dielectric properties, 3) the degrees of protection provided by their enclosures, where applicable, 4) their construction, 5) for controllers, interactions between the various components, for example SCPD co-ordination; c) the tests intended for confirming that these conditions have been met, and the methods to be adopted for these tests; d) the information to be given with the equipment or in the manufacturer's literature.

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 106: Wechselstrom-Schütze, Kombinationsstarter und Motorstarter mit Schützen

Appareillage à haute tension - Partie 106: Contacteurs, combinés de démarrage à contacteurs et démarreurs de moteurs, pour courant alternatif

L'IEC 62271-106:2021 s'applique aux contacteurs à courant alternatif et/ou aux combinés de démarrage à contacteurs et démarreurs de moteurs conçus pour des installations intérieures et pour fonctionner à des fréquences inférieures ou égales à 60 Hz, dans des réseaux de tensions supérieures à 1 kV, mais qui n'excèdent pas 24 kV. Le présent document comprend également des exigences supplémentaires pour les installations en extérieur, les équipements étant alors installés dans une enveloppe de protection supplémentaire. Cette deuxième édition annule et remplace la première édition parue en 2011. Elle constitue une révision technique. Cette édition inclut la modification technique majeure suivante par rapport à l'édition précédente:  le document a été renuméroté pour des raisons de cohérence avec l'IEC 62271-1:2017.  La présente version bilingue (2021-10) correspond à la version anglaise monolingue publiée en 2021-04. La version française de cette norme n'a pas été soumise au vote.

Visokonapetostne stikalne in krmilne narave - 106. del: Kontaktorji na izmenični tok, kontaktorski krmilniki in motorni starterji (IEC 62271-106:2021)

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Published
Current Stage
6060 - Document made available
Due Date
27-Oct-2020

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SLOVENSKI STANDARD
SIST EN IEC 62271-106:2021
01-september-2021
Nadomešča:
SIST EN 62271-106:2011
Visokonapetostne stikalne in krmilne narave - 106. del: Kontaktorji na izmenični
tok, kontaktorski krmilniki in motorni starterji (IEC 62271-106:2021)

High-voltage switchgear and controlgear - Part 106: Alternating current contactors,

contactor-based controllers and motor-starters (IEC 62271-106:2021)
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 106: Wechselstrom-Schütze,
Kombinationsstarter und Motorstarter mit Schützen (IEC 62271-106:2021)
Appareillage à haute tension - Partie 106: Contacteurs, combinés de démarrage à

contacteurs et démarreurs de moteurs, pour courant alternatif (IEC 62271-106:2021)

Ta slovenski standard je istoveten z: EN IEC 62271-106:2021
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 62271-106:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62271-106:2021
---------------------- Page: 2 ----------------------
SIST EN IEC 62271-106:2021
EUROPEAN STANDARD EN IEC 62271-106
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2021
ICS 29.130.10 Supersedes EN 62271-106:2011 and all of its
amendments and corrigenda (if any)
English Version
High-voltage switchgear and controlgear - Part 106: Alternating
current contactors, contactor-based controllers and motor-
starters
(IEC 62271-106:2021)

Appareillage à haute tension - Partie 106: Contacteurs, Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil

combinés de démarrage à contacteurs et démarreurs de 106: Wechselstrom-Schütze, Kombinationsstarter und

moteurs, pour courant alternatif Motorstarter mit Schützen
(IEC 62271-106:2021) (IEC 62271-106:2021)

This European Standard was approved by CENELEC on 2021-05-31. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62271-106:2021 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62271-106:2021
EN IEC 62271-106:2021 (E)
European foreword

The text of document 17A/1296/FDIS, future edition 2 of IEC 62271-106, prepared by SC 17A

"Switching devices" of IEC/TC 17 "High-voltage switchgear and controlgear" was submitted to the IEC-

CENELEC parallel vote and approved by CENELEC as EN IEC 62271-106:2021.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2022-02-28

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2024-05-31

document have to be withdrawn

This document supersedes EN 62271-106:2011 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 62271-106:2021 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 60034-11 NOTE Harmonized as EN 60034-11
IEC 60060 (series) NOTE Harmonized as EN 60060 (series)
IEC 60255-149:2013 NOTE Harmonized as EN 60255-149:2013 (not modified)
IEC 62271-103 NOTE Harmonized as EN 62271-103
---------------------- Page: 4 ----------------------
SIST EN IEC 62271-106:2021
EN IEC 62271-106:2021 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 1 Where an International Publication has been modified by common modifications, indicated by (mod), the

relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60060-1 2010 High-voltage test techniques - Part 1: EN 60060-1 2010
General definitions and test requirements
IEC 60068-2-1 2007 Environmental testing - Part 2-1: Tests - EN 60068-2-1 2007
Test A: Cold
IEC 60068-2-2 2007 Environmental testing - Part 2-2: Tests - EN 60068-2-2 2007
Test B: Dry heat

IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests - EN 60068-2-30 2005

Test Db: Damp heat, cyclic (12 h + 12 h
cycle)
IEC 60076-2 - Power transformers - Part 2: Temperature EN 60076-2 -
rise for liquid-immersed transformers
IEC 60076-11 2018 Power transformers - Part 11: Dry-type EN IEC 60076-11 2018
transformers

IEC 60255-21-1 1988 Electrical relays - Part 21: Vibration, shock, EN 60255-21-1 1995

bump and seismic tests on measuring
relays and protection equipment - Section
One: Vibration tests (sinusoidal)
IEC 60282-1 - High-voltage fuses - Part 1: Current-limiting EN IEC 60282-1 -
fuses
IEC 60417 - Graphical symbols for use on equipment. - -
Index, survey and compilation of the single
sheets.
IEC 60644 - Specification for high-voltage fuse-links for EN 60644 -
motor circuit applications
IEC 60947-5-1 - Low-voltage switchgear and controlgear - EN 60947-5-1 -
Part 5-1: Control circuit devices and
switching elements - Electromechanical
control circuit devices

IEC 61000-4-18 2019 Electromagnetic compatibility (EMC) - Part EN IEC 61000-4-18 2019

4-18: Testing and measurement
techniques - Damped oscillatory wave
immunity test
---------------------- Page: 5 ----------------------
SIST EN IEC 62271-106:2021
EN IEC 62271-106:2021 (E)
Publication Year Title EN/HD Year
IEC 61230 - Live working - Portable equipment for EN 61230 -
earthing or earthing and short-circuiting
IEC 61812-1 - Time relays for industrial and residential EN 61812-1 -
use - Part 1: Requirements and tests
IEC 62271-1 2017 High-voltage switchgear and controlgear - EN 62271-1 2017
Part 1: Common specifications for
alternating current switchgear and
controlgear

IEC 62271-100 2021 High-voltage switchgear and controlgear - EN IEC 62271-100 2021

Part 100: Alternating-current circuit-
breakers

IEC 62271-102 2018 High-voltage switchgear and controlgear – EN IEC 62271-102 2018

Part 102: Alternating current disconnectors
and earthing switches

IEC 62271-110 2017 High-voltage switchgear and controlgear – EN IEC 62271-110 2018

Part 110: Inductive load switching

IEC 62271-200 2021 High-voltage switchgear and controlgear - EN IEC 62271-200 2021

Part 200: AC metal-enclosed switchgear
and controlgear for rated voltages above 1
kV and up to and including 52 kV
---------------------- Page: 6 ----------------------
SIST EN IEC 62271-106:2021
IEC 62271-106
Edition 2.0 2021-04
INTERNATIONAL
STANDARD
High-voltage switchgear and controlgear –
Part 106: Alternating current contactors, contactor-based controllers and motor-
starters
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-9635-6

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN IEC 62271-106:2021
– 2 – IEC 62271-106:2021  IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 8

4 Normal and special service conditions ........................................................................... 23

5 Ratings .......................................................................................................................... 24

6 Design and construction ................................................................................................ 38

7 Type tests ..................................................................................................................... 42

8 Routine tests ................................................................................................................. 70

9 Guide to the selection of contactors and motor-starters for service (informative) ........... 72

10 Information to be given with enquiries, tenders and orders (informative) ........................ 76

11 Transport, storage, installation, operating instructions and maintenance........................ 78

12 Safety ............................................................................................................................ 78

13 Influence of the product on the environment .................................................................. 78

Annex A (normative) Identification of test objects ................................................................. 79

Annex B (informative) Determination of the equivalent RMS value of a short-time

current during a short-circuit of a given duration ................................................................... 80

Annex C (normative) Method for weatherproofing test for outdoor switchgear and

controlgear ........................................................................................................................... 81

Annex D (informative) References for auxiliary and control circuit components .................... 82

Annex E (normative) Tolerances on test quantities during tests ........................................... 83

Annex F (informative) Information and technical requirements to be given with

enquires, tenders and orders ................................................................................................ 88

Annex G (informative) List of symbols and abbreviations ..................................................... 89

Annex H (informative) Electromagnetic compatibility on site ................................................ 90

Annex I (informative) List of notes concerning certain countries ........................................... 91

Annex J (informative) Extension of validity type tests ........................................................... 92

Annex K (informative) Exposure to pollution ......................................................................... 93

Annex AA (normative) Records and reports of type tests for making, breaking and

short-time current performance ............................................................................................. 94

Annex BB (normative) Disconnectors and earthing switches used in controllers ................... 98

Bibliography ........................................................................................................................ 100

Figure 1 – Examples of speed/time curves ............................................................................ 32

Figure 2 – Representation by two parameters of a prospective TRV of a circuit .................... 60

Figure 3 – Representation of the specified TRV by a two-parameter reference line and

a delay line ........................................................................................................................... 60

Figure 4 – Determination of power-frequency recovery voltage ............................................. 61

Figure 5 – Test duties A and B – preferred earth point .......................................................... 63

Figure 6 – Test duties A and B – alternative earth point ........................................................ 64

Figure 7 – Test duty C – preferred earth point ....................................................................... 64

Figure 8 – Test duty C – alternative earth point ..................................................................... 65

Figure 9 – Characteristics for determining take-over current ................................................. 66

---------------------- Page: 8 ----------------------
SIST EN IEC 62271-106:2021
IEC 62271-106:2021  IEC 2021 – 3 –

Figure BB.1 – Disconnector and earthing switch locations .................................................... 98

Table 1 – Ratings and characteristics ................................................................................... 25

Table 2 – Utilization categories ............................................................................................. 31

Table 3 – Characteristics dependent on starter type ............................................................. 37

Table 4 – Applicable type tests ............................................................................................. 44

Table 5 – Intermittent duty operating cycles .......................................................................... 48

Table 6 – Verification of rated making and breaking capacities – Conditions for making

and breaking corresponding to the several utilization categories at rated voltage U ............. 52

Table 7 – Relationship between current broken I and OFF time .......................................... 55

Table 8 – Overload current withstand requirements .............................................................. 56

Table 9 – Transient recovery voltage characteristics ............................................................. 63

Table 10 – Verification of the number of on-load operating cycles – Conditions for

making and breaking corresponding to the several utilization categories ............................... 68

Table E.101 – Tolerances on test quantities for type test ...................................................... 83

Table G.101 – Additional list of symbols and abbreviations ................................................... 89

---------------------- Page: 9 ----------------------
SIST EN IEC 62271-106:2021
– 4 – IEC 62271-106:2021  IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 106: Alternating current contactors,
contactor-based controllers and motor-starters
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

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 62271-106 has been prepared by subcommittee 17A: Switching

devices, of IEC technical committee 17: High-voltage switchgear and controlgear.

This second edition cancels and replaces the first edition published in 2011. It constitutes a

technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
• document numbered to correspond to IEC 62271-1 2017.
---------------------- Page: 10 ----------------------
SIST EN IEC 62271-106:2021
IEC 62271-106:2021  IEC 2021 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
17A/1296/FDIS 17A/1301/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

This standard is to be read in conjunction with IEC 62271-1:2017. In order to simplify the

indication of corresponding requirements, the same numbering of clauses and subclauses is

used as in IEC 62271-1. Modifications to these clauses and subclauses are given under the

same numbering, whilst additional subclauses are numbered from 101.

A list of all parts of 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 document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 11 ----------------------
SIST EN IEC 62271-106:2021
– 6 – IEC 62271-106:2021  IEC 2021
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 106: Alternating current contactors,
contactor-based controllers and motor-starters
1 Scope

This part of IEC 62271 applies to AC contactors and/or contactor-based controllers and motor-

starters designed for indoor installation and operation at frequencies up to and including 60 Hz

on systems having voltages above 1 kV and up to and including 24 kV. This document also

includes additional requirements for outdoor installations where the equipment is housed in an

additional protective enclosure.

It is applicable only to three-pole devices for use in three-phase systems, and single-pole

devices for use in single-phase systems. Two-pole contactors and starters for use in single-phase

systems are subject to agreement between manufacturer and user.

Contactors and/or starters dealt with in this document typically do not have adequate

short-circuit interruption capability. In this context, this document gives requirements for:

– starters associated with separate short-circuit protective devices;

– controllers – contactors combined with short-circuit protective devices (SCPD).

Contactors intended for closing and opening electric circuits and, if combined with suitable

relays, for protecting these circuits against operating overloads are covered in this document.

This document is also applicable to the operating devices of contactors and to their auxiliary

equipment.

Motor-starters intended to start and accelerate motors to normal speed, to ensure continuous

operation of motors, to switch off the supply from the motor and to provide means for the

protection of motors and associated circuits against operating overloads are dealt with.

Motor-starter types included are:
– direct-on-line starters;
– reversing starters;
– two-direction starters;
– reduced kVA (voltage) starters;
• auto-transformer starters;
• rheostatic starters;
• reactor starters.
This document does not apply to:
– circuit-breaker-based motor-starters;
– single-pole operation of multi-pole contactors or starters;

– two-step auto-transformer starters designed for continuous operation in the starting position;

– unbalanced rheostatic rotor starters, i.e. where the resistances do not have the same value

in all phases;
– equipment designed not only for starting, but also for adjustment of speed;
---------------------- Page: 12 ----------------------
SIST EN IEC 62271-106:2021
IEC 62271-106:2021  IEC 2021 – 7 –
– liquid starters and those of the "liquid-vapour" type;

– semiconductor contactors and starters making use of semiconductor contactors in the

main circuit;
– rheostatic stator starters;
– contactors or starters designed for special applications.

This document does not deal with components contained in contactors and contactor-based

motor-starters, for which individual specifications exist.
NOTE 1 Thermal electrical relays are covered by IEC 60255-149.

NOTE 2 High-voltage current-limiting fuses are covered by IEC 60282-1 and IEC 60644.

NOTE 3 Metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

are covered by IEC 62271-200.
NOTE 4 Disconnectors and earthing switches are covered by IEC 62271-102.

NOTE 5 High-voltage switches above 1 kV and less than 52 kV are covered by IEC 62271-103.

The object of this document is to state:
a) the characteristics of contactors and starters and associated equipment;
b) the conditions with which contactors or starters comply with reference to:
1) their operation and behaviour,
2) their dielectric properties,
3) the degrees of protection provided by their enclosures, where applicable,
4) their construction,

5) for controllers, interactions between the various components, for example SCPD

co-ordination;

c) the tests intended for confirming that these conditions have been met, and the methods to

be adopted for these tests;

d) the information to be given with the equipment or in the manufacturer's literature.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 60060-1:2010, High-voltage test techniques – Part 1: General definitions and test

requirements
IEC 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat

IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic

(12 h + 12 h cycle)

IEC 60076-2, Power transformers – Part 2: Temperature rise for liquid-immersed transformers

IEC 60076-11:2018, Power transformers – Part 11: Dry-type transformers
---------------------- Page: 13 ----------------------
SIST EN IEC 62271-106:2021
– 8 – IEC 62271-106:2021  IEC 2021

IEC 60255-21-1:1988, Electrical relays – Part 21: Vibration, shock, bump and seismic tests on

measuring relays and protection equipment – Section One: Vibration tests (sinusoidal)

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

IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-

symbols.info/equipment)

IEC 60644, Specification for high-voltage fuse-links for motor circuit applications

IEC 60947-5-1, Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices and

switching elements – Electromechanical control circuit devices

IEC 61000-4-18:2019, Electromagnetic compatibility (EMC) – Part 4-18: Testing and

measurement techniques – Damped oscillatory wave immunity test

IEC 61230, Live working – Portable equipment for earthing or earthing and short-circuiting

IEC 61812-1, Time relays for industrial use and residential use – Part 1: Requirements and

tests

IEC 62271-1:2017, High-voltage switchgear and controlgear – Part 1: Common specifications

for alternating current switchgear and controlgear

IEC 62271-100:2021, High-voltage switchgear and controlgear – Part 100: Alternating current

circuit-breakers

IEC 62271-102:2018, High-voltage switchgear and controlgear – Part 102: Alternating current

disconnectors and earthing switches

IEC 62271-110:2017, High-voltage switchgear and controlgear – Part 110: Inductive load

switching

IEC 62271-200:2021, 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

3 Terms and definitions

For the purposes of this document, the terms and definitions given in Clause 3 of

IEC 62271-1:2017, as well as the following, apply.
3.1 General terms and definitions
Subclause 3.1 of IEC 62271-1: 2017 applies with the following additions:
3.1.101
controlgear

general term covering switching devices and their combination with associated control,

measuring, protective and regulating equipment, also assemblies of such devices and

equipment with associated interconnections, accessories, enclosures and supporting

structures, intended in principle for the control of electric energy consuming equipment

[SOURCE: IEC 60050-441:2000, 441-11-03]
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SIST EN IEC 62271-106:2021
IEC 62271-106:2021  IEC 2021 – 9 –
3.1.102
overcurrent
current exceeding the rated current
[SOURCE: IEC 60050-441:2000, 441-11-06]
3.1.103
short-circuit current

over-current resulting from a short circuit due to a fault or an incorrect connection in an electric

circuit
[SOURCE: IEC 60050-441:2000, 441-11-07]
3.1.104
overload

operating conditions in an electrically undamaged circuit, which cause an over-current

[SOURCE: IEC 60050-441:2000, 441-11-08]
3.1.105
conductive part

part which is capable of conducting current although it may not necessarily be used for carrying

service current
[SOURCE: IEC 60050-441:2000, 441-11-09]
3.1.106
ambient air temperature

temperature, determined under prescribed conditions, of the air surrounding the complete

switching device or fuse

Note 1 to entry: For switching devices or fuses installed inside an enclosure, it is the temperature of the air outside

the enclosure.
[SOURCE: IEC 60050-441:2000, 441-11-13]
3.2 Assemblies of switchgear and controlgear
Subclause 3.2 of IEC 62271-1: 2017 applies.
3.3 Parts of assemblies
Subclause 3.3 of IEC 62271-1: 2017 applies.
3.4 Switching devices
Subclause 3.4 of IEC 62271-1: 2017 applies with the followi
...

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