IEC 62271-1:2017
(Main)High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
IEC 62271-1:2017 applies to AC switchgear and controlgear designed for indoor and/or outdoor installation and for operation at service frequencies up to and including 60 Hz and having rated voltages above 1 000 V.
This document applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear.
This second edition cancels and replaces the first edition published in 2007 and Amendment 1:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
New numbering in accordance with ISO/IEC directives, Part 2 (2016) and IEEE Std. C37.100.1.
4.1.2 a) The normal service condition for indoor switchgear is limited to one range of 40 °C to -5 °C.
4.1.3 a) The normal service condition for outdoor switchgear is limited to one range of 40 °C to -25 °C.
4.2.2: The specifications from IEC 60071-2:1996 are adopted for altitude correction factors above 1 000 m.
5.2.2: Range I, the rated voltage of 40,5 kV is added Series I Table 1; Table 2 and Table 4 are updated on recommendation of the US National Committee.
6.8: New subclause added for manual operated actuators consistent with “Man Machine Interface” recommendations of IEC 60447 .
7.2.6.1:Insert the wording regarding preliminary impulses across open vacuum interrupters according to the result of IEC 17/1026/RQ.
7.3: Changed the requirement for radio interference voltage to a rated voltage level of 245 kV and above, instead of 123 kV and above. This change is based on reported positive test and service experience of utility representatives in the maintenance team of this standard.
7.5.6, Table 14:
a. Introduced the distinction of parts in “OG” (oxidizing gas) or in “NOG” (not oxidizing gas) replacing the former “air” and “SF6”;
b. Increased the allowable temperature rise for some parts in groups 1 and 2 of Table 14 according to IEC TR 60943;
c. Expanded the definition of allowable temperature rise for categories of accessible surfaces with reference to IEC Guide 117. See also Point 15 in 7.5.6.2.
7.5.6.2: Point 5 is modified to clarify the introduction of “OG” and “NOG” gas.
7.10: Some tests were removed because the relevant test standards of IEC 60068 series were modified or withdrawn.
7.11.3: The acceptance criteria for X-radiation testing are modified to recognize higher rated vacuum interrupters.
Former informative Annex H: Corrosion is deleted, the content is part of
IEC TR 62271-306.
New Annex J (informative): Added informative guidelines for the extension of validity of type tests
New Annex K (informative): Added informative guidelines about exposure to pollution
The contents of the Interpretation Sheet 1 of May 2021 have been included in this copy.
Appareillage à haute tension - Partie 1: Spécifications communes pour appareillage à courant alternatif
L’IEC 62271:2017 s'applique à l'appareillage à courant alternatif prévu pour être installé à l'intérieur et/ou à l'extérieur et pour fonctionner à des fréquences de service inférieures ou égales à 60 Hz, et ayant des tensions assignées supérieures à 1 000 V.
Ce document s'applique à tout l'appareillage à haute tension, sauf spécification contraire dans les normes particulières de l’IEC pour le type d'appareillage considéré.
Cette deuxième édition annule et remplace la première édition parue en 2007 et l'Amendement 1:2011. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
Nouvelle numérotation conformément aux Directives ISO/IEC, Partie 2 (2016) et à l’IEEE Std. C37.100.1.
4.1.2 a): Limitation des conditions normales de service de l’appareillage pour l’intérieur à une plage de 40 °C à –5 °C.
4.1.3 a): Limitation des conditions normales de service de l’appareillage pour l’extérieur à une plage de 40 °C à –25 °C.
4.2.2: Adoption des spécifications de l’IEC 60071-2:1996 pour les facteurs de correction de l’altitude supérieure à 1 000 m.
5.2.2: Plage I, ajout de la tension assignée de 40,5 kV au Tableau 1 Série I; mise à jour du Tableau 2 et du Tableau 4 sur recommandation du comité national US.
6.8: Ajout d’un nouveau paragraphe pour les organes de commande à manœuvre manuelle conformes aux recommandations relatives à l’Interface Homme-Machine de l’IEC 60447.
7.2.6.1: Insertion du libellé concernant les impulsions préliminaires dans les ampoules à vide ouvertes selon le résultat de l’IEC 17/1026/RQ.
7.3: Modification de l’exigence relative à la tension de perturbation radioélectrique à une tension assignée supérieure ou égale à 245 kV, au lieu d’une tension assignée supérieure ou égale à 123 kV. Cette modification est basée sur des essais et retours d’expérience positifs rapportés par les représentants des utilités membres de l’équipe de maintenance de la présente norme.
7.5.6, Tableau 14:
a. Introduction de la distinction des parties dans les "OG" (gaz oxydants) et dans les "NOG" (gaz non oxydants) qui remplacent ici les termes "air" et "SF6" de l’édition précédente.
b. Augmentation de l’échauffement admissible pour certaines parties des groupes 1 et 2 du Tableau 14 selon l’IEC TR 60943;
c. Extension de la définition de l’échauffement admissible pour des catégories de surfaces accessibles en référence au Guide IEC 117. Voir également le point 15 de 7.5.6.2.
7.5.6.2: Modification du Point 5 pour clarifier l’introduction des gaz ‘’OG’’ et ‘’NOG’’.
7.10: Suppression de certains essais du fait de la modification ou suppression des normes d’essais correspondantes de la série IEC 60068.
7.11.3: Modification des critères d’acceptation des essais de rayonnements X pour prendre en compte les ampoules à vide de tension assignée supérieure.
Ancienne Annexe H informative: Le contenu concernant la corrosion est supprimé car il fait partie de l’IEC TR 62271-306.
Nouvelle Annexe J (informative): Ajout de lignes directrices informatives relatives à l’extension de la validité des essais de type.
Nouvelle Annexe K (informative): Ajout de lignes directrices informatives relatives à l’exposition à la pollution.
Le contenu de la feuille d’interprétation 1 de mai 2021 a été pris en considération dans cet exemplaire.
General Information
- Status
- Published
- Publication Date
- 03-Oct-2021
- Technical Committee
- TC 17 - High-voltage switchgear and controlgear
- Drafting Committee
- MT 1 - TC 17/MT 1
- Current Stage
- PPUB - Publication issued
- Start Date
- 02-Jun-2017
- Completion Date
- 12-Jul-2017
Relations
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
Overview
IEC 62271-1:2017, titled High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear, is an international standard developed by the International Electrotechnical Commission (IEC). It specifies requirements for alternating current (AC) high-voltage switchgear and controlgear designed for both indoor and outdoor installation. The standard covers equipment operating at service frequencies up to and including 60 Hz and rated voltages above 1,000 volts.
This second edition replaces the 2007 edition, incorporating technical revisions and updates aligned with ISO/IEC directives and IEEE standards. IEC 62271-1:2017 applies broadly to all types of high-voltage AC switchgear and controlgear, except where other specific IEC standards provide supplementary details.
Key Topics
The standard comprehensively addresses multiple critical aspects related to the design, operation, and environmental conditions of switchgear and controlgear:
- Normal and Special Service Conditions: Defines temperature ranges for normal indoor (from -5 °C to 40 °C) and outdoor (from -25 °C to 40 °C) service conditions, and considers altitude effects with correction factors applied above 1,000 meters based on IEC 60071-2:1996.
- Rated Parameters: Establishes requirements for rated voltage (including an additional 40.5 kV level), rated insulation levels (power-frequency, lightning impulse, and switching impulse voltages), rated current, short-time withstand current, peak withstand current, and short-circuit duration.
- Design and Construction: Specifies conditions for liquids and gases used, earthing requirements, gas and vacuum tightness standards, creepage distances for insulators, enclosure protection levels (IP and IK codes), fire hazard mitigation, and electromagnetic compatibility (EMC).
- Operational Features: Includes new provisions for manually operated actuators in line with man-machine interface recommendations (IEC 60447), requirements for preliminary impulse testing on vacuum interrupters, and acceptance criteria for X-radiation testing of high-rated vacuum interrupters.
- Environmental and Safety Considerations: Clarifies exposure to pollution, abnormal vibrations, wind speeds, humidity, and special altitude conditions. New informative annexes provide guidelines for extending the validity of type tests and exposure to pollution.
- Testing and Certification: Removal of certain obsolete tests in line with updates to IEC 60068 series and updates to radio interference voltage requirements for rated voltages of 245 kV and above.
Applications
IEC 62271-1:2017 is essential for manufacturers, designers, testing laboratories, and electrical engineers involved in the development, installation, and maintenance of high-voltage AC switchgear and controlgear used in:
- Power generation plants
- Electrical substations and switchyards
- Transmission and distribution networks
- Industrial power systems requiring reliable high-voltage switching and control
- Renewable energy facilities including wind and solar power integration
By following this standard, stakeholders ensure safe, reliable, and performance-compliant switchgear operation that meets global electrical utility and industrial needs.
Related Standards
IEC 62271-1:2017 relates to and references several other important standards for high-voltage equipment and related testing:
- IEC 60071-2: Insulation co-ordination, important for determining altitude correction factors and withstand voltage levels.
- IEC 60447: Man-machine interface guidelines applied to manual actuator operations.
- IEC 60068 series: Environmental testing of electrical equipment, updated in the context of this standard.
- IEC TR 62271-306: Technical report related to corrosion and type test validity extensions, replacing former Annex H.
- IEEE Std. C37.100.1: Standard for electrical power system device function numbers and contact designations, aligning numbering conventions.
- Other parts of IEC 62271 series focusing on specific switchgear types and controlgear functionalities.
Key Benefits of IEC 62271-1:2017
- Ensures compatibility and interoperability across international high-voltage equipment
- Provides updated, harmonized technical requirements reflecting latest field experience and testing methods
- Enhances safety and operational reliability for AC switchgear used in critical electrical infrastructures
- Supports manufacturers in complying with globally recognized specifications, facilitating market access
By adhering to IEC 62271-1:2017, industry professionals promote consistent quality, improved product safety, and better environmental adaptation for high-voltage switchgear and controlgear worldwide.
IEC 62271-1:2017+AMD1:2021 CSV - High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear Released:10/4/2021
IEC 62271-1:2017 - High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear
Frequently Asked Questions
IEC 62271-1:2017 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "High-voltage switchgear and controlgear - Part 1: Common specifications for alternating current switchgear and controlgear". This standard covers: IEC 62271-1:2017 applies to AC switchgear and controlgear designed for indoor and/or outdoor installation and for operation at service frequencies up to and including 60 Hz and having rated voltages above 1 000 V. This document applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear. This second edition cancels and replaces the first edition published in 2007 and Amendment 1:2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: New numbering in accordance with ISO/IEC directives, Part 2 (2016) and IEEE Std. C37.100.1. 4.1.2 a) The normal service condition for indoor switchgear is limited to one range of 40 °C to -5 °C. 4.1.3 a) The normal service condition for outdoor switchgear is limited to one range of 40 °C to -25 °C. 4.2.2: The specifications from IEC 60071-2:1996 are adopted for altitude correction factors above 1 000 m. 5.2.2: Range I, the rated voltage of 40,5 kV is added Series I Table 1; Table 2 and Table 4 are updated on recommendation of the US National Committee. 6.8: New subclause added for manual operated actuators consistent with “Man Machine Interface” recommendations of IEC 60447 . 7.2.6.1:Insert the wording regarding preliminary impulses across open vacuum interrupters according to the result of IEC 17/1026/RQ. 7.3: Changed the requirement for radio interference voltage to a rated voltage level of 245 kV and above, instead of 123 kV and above. This change is based on reported positive test and service experience of utility representatives in the maintenance team of this standard. 7.5.6, Table 14: a. Introduced the distinction of parts in “OG” (oxidizing gas) or in “NOG” (not oxidizing gas) replacing the former “air” and “SF6”; b. Increased the allowable temperature rise for some parts in groups 1 and 2 of Table 14 according to IEC TR 60943; c. Expanded the definition of allowable temperature rise for categories of accessible surfaces with reference to IEC Guide 117. See also Point 15 in 7.5.6.2. 7.5.6.2: Point 5 is modified to clarify the introduction of “OG” and “NOG” gas. 7.10: Some tests were removed because the relevant test standards of IEC 60068 series were modified or withdrawn. 7.11.3: The acceptance criteria for X-radiation testing are modified to recognize higher rated vacuum interrupters. Former informative Annex H: Corrosion is deleted, the content is part of IEC TR 62271-306. New Annex J (informative): Added informative guidelines for the extension of validity of type tests New Annex K (informative): Added informative guidelines about exposure to pollution The contents of the Interpretation Sheet 1 of May 2021 have been included in this copy.
IEC 62271-1:2017 applies to AC switchgear and controlgear designed for indoor and/or outdoor installation and for operation at service frequencies up to and including 60 Hz and having rated voltages above 1 000 V. This document applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear. This second edition cancels and replaces the first edition published in 2007 and Amendment 1:2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: New numbering in accordance with ISO/IEC directives, Part 2 (2016) and IEEE Std. C37.100.1. 4.1.2 a) The normal service condition for indoor switchgear is limited to one range of 40 °C to -5 °C. 4.1.3 a) The normal service condition for outdoor switchgear is limited to one range of 40 °C to -25 °C. 4.2.2: The specifications from IEC 60071-2:1996 are adopted for altitude correction factors above 1 000 m. 5.2.2: Range I, the rated voltage of 40,5 kV is added Series I Table 1; Table 2 and Table 4 are updated on recommendation of the US National Committee. 6.8: New subclause added for manual operated actuators consistent with “Man Machine Interface” recommendations of IEC 60447 . 7.2.6.1:Insert the wording regarding preliminary impulses across open vacuum interrupters according to the result of IEC 17/1026/RQ. 7.3: Changed the requirement for radio interference voltage to a rated voltage level of 245 kV and above, instead of 123 kV and above. This change is based on reported positive test and service experience of utility representatives in the maintenance team of this standard. 7.5.6, Table 14: a. Introduced the distinction of parts in “OG” (oxidizing gas) or in “NOG” (not oxidizing gas) replacing the former “air” and “SF6”; b. Increased the allowable temperature rise for some parts in groups 1 and 2 of Table 14 according to IEC TR 60943; c. Expanded the definition of allowable temperature rise for categories of accessible surfaces with reference to IEC Guide 117. See also Point 15 in 7.5.6.2. 7.5.6.2: Point 5 is modified to clarify the introduction of “OG” and “NOG” gas. 7.10: Some tests were removed because the relevant test standards of IEC 60068 series were modified or withdrawn. 7.11.3: The acceptance criteria for X-radiation testing are modified to recognize higher rated vacuum interrupters. Former informative Annex H: Corrosion is deleted, the content is part of IEC TR 62271-306. New Annex J (informative): Added informative guidelines for the extension of validity of type tests New Annex K (informative): Added informative guidelines about exposure to pollution The contents of the Interpretation Sheet 1 of May 2021 have been included in this copy.
IEC 62271-1:2017 is classified under the following ICS (International Classification for Standards) categories: 29.130.10 - High voltage switchgear and controlgear; 29.130.99 - Other switchgear and controlgear. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 62271-1:2017 has the following relationships with other standards: It is inter standard links to IEC 62271-1:2017/AMD1:2021, IEC 62271-1:2017/ISH1:2021, IEC 62271-1:2007, IEC 62271-1:2007/AMD1:2011. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 62271-1:2017 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
Standards Content (Sample)
IEC 62271-1 ®
Edition 2.1 2021-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 1: Common specifications for alternating current switchgear and
controlgear
Appareillage à haute tension –
Partie 1: Spécifications communes pour appareillage à courant alternatif
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IEC 62271-1 ®
Edition 2.1 2021-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 1: Common specifications for alternating current switchgear and
controlgear
Appareillage à haute tension –
Partie 1: Spécifications communes pour appareillage à courant alternatif
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-5245-1
IEC 62271-1 ®
Edition 2.1 2021-10
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
High-voltage switchgear and controlgear –
Part 1: Common specifications for alternating current switchgear and
controlgear
Appareillage à haute tension –
Partie 1: Spécifications communes pour appareillage à courant alternatif
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 62271-1
Edition 2.0 2017-07
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 1: Common specifications for alternating
current switchgear and controlgear
INTERPRETATION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 17: High-voltage
switchgear and controlgear.
The text of this interpretation sheet is based on the following documents:
DISH Report on voting
17/1090/DISH 17/1095/RVDISH
Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
Interpretation of 4.2.2 of IEC 62271-1:2017 regarding the altitude correction factor
Subclause 4.2.2 of IEC 62271-1:2017 contains two references for calculation of the required
insulation withstand level at altitudes higher than 1 000 m, IEC 60071-2:1996 and
IEC TR 62271-306. The two references are in conflict, as the altitude correction factor
according to IEC 60071-2:1996 starts at sea level and that of IEC TR 62271-306 starts at an
altitude of 1 000 m. This results in different altitude correction factors.
As already stated in 5.3 of IEC 62271-1:2017, the rated insulation levels refer to normal
service conditions. Altitudes up to 1 000 m above sea level are covered and need no altitude
correction.
For altitudes higher than 1 000 m the equation provided in 4.5.1.1 b) of
IEC TR 62271-306:2012 and in H.3.4 of IEC 60071-2:2018 shall be used, i.e.
H−1 000
m( )
8 150
k =e
alt
ICS 29.130.10; 29.130.99
– 2 – IEC 62271-1:2017/ISH1:2021
© IEC 2021
where
is the altitude correction factor;
k
alt
H is the altitude in m above sea level;
m is an exponent.
Conservative values for the exponent m are provided in Table 4 of IEC TR 62271-306:2012.
For further details about the exponent m, see H.4 of IEC 60071-2:2018.
– 2 – IEC 62271-1:2017+AMD1:2021 CSV
IEC 2021
CONTENTS
FOREWORD . 8
INTRODUCTION . 11
1 Scope . 12
2 Normative references. 12
3 Terms and definitions . 14
3.1 General terms and definitions . 15
3.2 Assemblies of switchgear and controlgear . 18
3.3 Parts of assemblies . 18
3.4 Switching devices . 18
3.5 Parts of switchgear and controlgear . 18
3.6 Operational characteristics of switchgear and controlgear . 22
3.6.5 Terms and definitions relative to pressure (or density) . 23
3.6.6 Terms and definitions relating to gas and vacuum tightness . 23
3.6.7 Terms and definitions relating to liquid tightness . 25
3.7 Characteristic quantities . 25
3.8 Index of definitions . 26
4 Normal and special service conditions . 28
4.1 Normal service conditions . 28
4.1.1 General . 28
4.1.2 Indoor switchgear and controlgear . 28
4.1.3 Outdoor switchgear and controlgear . 29
4.2 Special service conditions . 29
4.2.1 General . 29
4.2.2 Altitude . 29
4.2.3 Exposure to pollution . 30
4.2.4 Temperature and humidity . 30
4.2.5 Exposure to abnormal vibrations, shock or tilting . 30
4.2.6 Wind speed . 31
4.2.7 Other parameters . 31
5 Ratings . 31
5.1 General . 31
5.2 Rated voltage (U ) . 31
r
5.2.1 General . 31
5.2.2 Range I for rated voltages of 245 kV and below . 31
5.2.3 Range II for rated voltages above 245 kV . 32
5.3 Rated insulation level (U , U , U ) . 32
d p s
5.4 Rated frequency (f ) . 36
r
5.5 Rated continuous current (I ) . 36
r
5.6 Rated short-time withstand current (I ) . 36
k
5.7 Rated peak withstand current (I ) . 37
p
5.8 Rated duration of short-circuit (t ) . 37
k
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 37
a
5.9.1 General . 37
5.9.2 Rated supply voltage (U ) . 37
a
5.10 Rated supply frequency of auxiliary and control circuits . 38
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 38
IEC 2021
6 Design and construction . 39
6.1 Requirements for liquids in switchgear and controlgear . 39
6.2 Requirements for gases in switchgear and controlgear . 39
6.3 Earthing of switchgear and controlgear . 39
6.4 Auxiliary and control equipment and circuits . 39
6.4.1 General . 39
6.4.2 Protection against electric shock . 40
6.4.3 Components installed in enclosures . 41
6.5 Dependent power operation . 44
6.6 Stored energy operation . 44
6.6.1 General . 44
6.6.2 Energy storage in gas receivers or hydraulic accumulators . 44
6.6.3 Energy storage in springs (or weights) . 44
6.6.4 Manual charging . 44
6.6.5 Motor charging . 45
6.6.6 Energy storage in capacitors . 45
6.7 Independent unlatched operation (independent manual or power operation) . 45
6.8 Manually operated actuators . 45
6.9 Operation of releases . 46
6.9.1 General . 46
6.9.2 Shunt closing release . 46
6.9.3 Shunt opening release . 46
6.9.4 Capacitor operation of shunt releases . 46
6.9.5 Under-voltage release . 46
6.10 Pressure/level indication . 46
6.10.1 Gas pressure . 46
6.10.2 Liquid level . 47
6.11 Nameplates . 47
6.11.1 General . 47
6.11.2 Application . 47
6.12 Locking devices . 48
6.13 Position indication . 49
6.14 Degrees of protection provided by enclosures . 49
6.14.1 General . 49
6.14.2 Protection of persons against access to hazardous parts and protection
of the equipment against ingress of solid foreign objects (IP coding) . 49
6.14.3 Protection against ingress of water (IP coding) . 49
6.14.4 Protection against mechanical impact under normal service conditions
(IK coding) . 49
6.15 Creepage distances for outdoor insulators . 49
6.16 Gas and vacuum tightness . 50
6.16.1 General . 50
6.16.2 Controlled pressure systems for gas . 50
6.16.3 Closed pressure systems for gas . 50
6.16.4 Sealed pressure systems . 50
6.17 Tightness for liquid systems . 51
6.17.1 General . 51
6.17.2 Leakage rates . 51
6.18 Fire hazard (flammability) . 51
– 4 – IEC 62271-1:2017+AMD1:2021 CSV
IEC 2021
6.19 Electromagnetic compatibility (EMC) . 51
6.20 X-ray emission . 51
6.21 Corrosion . 51
6.22 Filling levels for insulation, switching and/or operation . 52
7 Type tests . 52
7.1 General . 52
7.1.1 Basics . 52
7.1.2 Information for identification of test objects . 52
7.1.3 Information to be included in type-test reports . 52
7.2 Dielectric tests . 53
7.2.1 General . 53
7.2.2 Ambient air conditions during tests . 53
7.2.3 Wet test procedure . 54
7.2.4 Arrangement of the equipment . 54
7.2.5 Criteria to pass the test . 54
7.2.6 Application of the test voltage and test conditions . 55
7.2.7 Tests of switchgear and controlgear of U ≤ 245 kV . 59
r
7.2.8 Tests of switchgear and controlgear of U > 245 kV . 59
r
7.2.9 Artificial pollution tests for outdoor insulators . 60
7.2.10 Partial discharge tests . 60
7.2.11 Dielectric tests on auxiliary and control circuits . 60
7.2.12 Voltage test as condition check . 60
7.3 Radio interference voltage (RIV) test . 61
7.4 Resistance measurement . 61
7.4.1 Measurement of the resistance of auxiliary contacts class 1 and class 2 . 61
7.4.2 Measurement of the resistance of auxiliary contacts class 3 . 61
7.4.3 Electrical continuity of earthed metallic parts test . 61
7.4.4 Resistance measurement of contacts and connections in the main
circuit as a condition check . 61
7.5 Continuous current tests. 62
7.5.1 Condition of the test object . 62
7.5.2 Arrangement of the equipment . 62
7.5.3 Test current and duration . 63
7.5.4 Temperature measurement during test . 64
7.5.5 Resistance of the main circuit . 65
7.5.6 Criteria to pass test . 65
7.6 Short-time withstand current and peak withstand current tests . 69
7.6.1 General . 69
7.6.2 Arrangement of the equipment and of the test circuit . 69
7.6.3 Test current and duration . 70
7.6.4 Conditions of the test object after test . 71
7.7 Verification of the protection . 71
7.7.1 Verification of the IP coding . 71
7.7.2 Verification of the IK coding . 71
7.8 Tightness tests . 72
7.8.1 General . 72
7.8.2 Controlled pressure systems for gas . 73
7.8.3 Closed pressure systems for gas . 73
7.8.4 Sealed pressure systems . 74
IEC 2021
7.8.5 Liquid tightness tests . 74
7.9 Electromagnetic compatibility tests (EMC) . 74
7.9.1 Emission tests . 74
7.9.2 Immunity tests on auxiliary and control circuits . 77
7.9.3 Additional EMC tests on auxiliary and control circuits . 79
7.10 Additional tests on auxiliary and control circuits . 80
7.10.1 General . 80
7.10.2 Functional tests . 80
7.10.3 Verification of the operational characteristics of auxiliary contacts . 80
7.10.4 Environmental tests . 81
7.10.5 Dielectric test . 82
7.11 X-radiation test for vacuum interrupters . 82
7.11.1 General requirements . 82
7.11.2 Test voltage and measurement procedure . 84
7.11.3 Acceptance criteria . 84
8 Routine tests . 85
8.1 General . 85
8.2 Dielectric test on the main circuit . 85
8.3 Tests on auxiliary and control circuits . 86
8.3.1 Inspection of auxiliary and control circuits, and verification of conformity
to the circuit diagrams and wiring diagrams . 86
8.3.2 Functional tests . 86
8.3.3 Verification of protection against electrical shock . 86
8.3.4 Dielectric tests . 86
8.4 Measurement of the resistance of the main circuit . 86
8.5 Tightness test . 87
8.5.1 General . 87
8.5.2 Controlled pressure systems for gas . 87
8.5.3 Closed pressure systems for gas . 87
8.5.4 Sealed pressure systems . 87
8.5.5 Liquid tightness tests . 87
8.6 Design and visual checks . 87
9 Guide to the selection of switchgear and controlgear (informative) . 88
9.1 General . 88
9.2 Selection of rated values . 88
9.3 Cable-interface considerations . 88
9.4 Continuous or temporary overload due to changed service conditions . 88
9.5 Environmental aspects . 88
9.5.1 Service conditions . 88
9.5.2 Clearances affected by service conditions . 88
9.5.3 High humidity . 88
9.5.4 Solar radiation . 89
10 Information to be given with enquiries, tenders and orders (informative) . 89
10.1 General . 89
10.2 Information with enquiries and orders . 89
10.3 Information with tenders . 90
11 Transport, storage, installation, operating instructions and maintenance . 91
11.1 General . 91
11.2 Conditions during transport, storage and installation . 91
– 6 – IEC 62271-1:2017+AMD1:2021 CSV
IEC 2021
11.3 Installation . 91
11.3.1 General . 91
11.3.2 Unpacking and lifting . 91
11.3.3 Assembly . 92
11.3.4 Mounting . 92
11.3.5 Connections . 92
11.3.6 Information about gas and gas mixtures for controlled and closed
pressure systems . 92
11.3.7 Final installation inspection . 93
11.3.8 Basic input data by the user . 93
11.3.9 Basic input data by the manufacturer . 93
11.4 Operating instructions . 94
11.5 Maintenance . 94
11.5.1 General . 94
11.5.2 Information about fluids and gas to be included in maintenance manual . 94
11.5.3 Recommendations for the manufacturer . 94
11.5.4 Recommendations for the user . 95
11.5.5 Failure report . 96
12 Safety . 97
12.1 General . 97
12.2 Precautions by manufacturers . 98
12.3 Precautions by users . 98
13 Influence of the product on the environment . 98
Annex A (normative) Identification of test objects . 100
A.1 General . 100
A.2 Data . 100
A.3 Drawings. 100
Annex B (informative) Determination of the equivalent RMS value of a short-time
current during a short-circuit of a given duration . 102
Annex C (normative) Method for the weatherproofing test for outdoor switchgear and
controlgear . 103
Annex D (informative) References for auxiliary and control circuit components . 106
Annex E (normative) Tolerances on test quantities during tests . 108
Annex F (informative) Information and technical requirements to be given with
enquiries, tenders and orders . 111
F.1 General . 111
F.2 Normal and special service conditions (refer to Clause 4) . 111
F.3 Ratings (refer to Clause 5) . 112
F.4 Design and construction (refer to Clause 6) . 112
F.5 System information . 113
F.6 Documentation for enquiries and tenders . 113
Annex G (informative) List of symbols . 114
Annex H (informative) Electromagnetic compatibility on site . 115
Annex I (informative) List of notes concerning certain countries . 116
Annex J (informative) Extension of validity of type tests . 117
J.1 General . 117
J.2 Dielectric tests . 117
J.3 Short-time withstand current tests. 117
IEC 2021
J.4 Continuous current test . 117
J.5 Electromagnetic immunity test on auxiliary and control circuits . 118
J.6 Environmental tests on auxiliary and control circuits . 118
Annex K (informative) Exposure to pollution . 119
K.1 General . 119
K.2 Pollution levels . 119
K.3 Minimum requirements for switchgear . 119
Bibliography . 121
Figure 1 – Examples of classes of contacts . 43
Figure 2 – Diagram of connections of a three-pole switching device . 56
Figure 3 – Diagram of a test circuit for the radio interference voltage test . 75
Figure 4 – Test location of radiation survey instrument . 84
Figure B.1 – Determination of short-time current . 102
Figure C.1 – Arrangement for weatherproofing test . 104
Figure C.2 – Nozzle for weatherproofing test . 105
Table 1 – Rated insulation levels for rated voltages of range I, series I . 33
Table 2 – Rated insulation levels for rated voltages of range I, series II (based on
current practice in some countries, including US) . 34
Table 3 – Rated insulation levels for rated voltages of range II . 35
Table 4 – Additional rated insulation levels for range II, based on current practice in
some countries, including US . 36
Table 5 – Peak factors for rated peak withstand current . 37
Table 6 – Direct current voltage . 38
Table 7 – Alternating current voltage . 38
Table 8 – Auxiliary contact classes . 43
Table 9 – Nameplate information . 48
Table 10 – Test conditions in general case . 56
Table 11 – Power-frequency test conditions . 57
Table 12 – Impulse test conditions . 58
Table 13 – Test conditions for the alternative method . 58
Table 14 – Limits of temperature and temperature rise for various parts, materials and
dielectrics of high-voltage switchgear and controlgear . 66
Table 15 – Permissible leakage rates for gas systems . 73
Table 16 – Application of voltages at the fast transient/burst test . 78
Table 17 – Application of voltage at the damped oscillatory wave test . 78
Table 18 – Assessment criteria for transient disturbance immunity . 79
Table D.1 – List of reference documents for auxiliary and control circuit components . 106
Table E.1 – Tolerances on test quantities for type test . 109
Table K.1 – Environmental examples by site pollution severity (SPS) class . 120
Table K.2 – Minimum nominal specific creepage distance by pollution level . 120
– 8 – IEC 62271-1:2017+AMD1:2021 CSV
IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 1: Common specifications for alternating
current switchgear and controlgear
FOREWORD
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This consolidated version of the official IEC Standard and its amendment has b
...
IEC 62271-1 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 1: Common specifications for alternating current switchgear and
controlgear
Appareillage à haute tension –
Partie 1: Spécifications communes pour appareillage à courant alternatif
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IEC 62271-1 ®
Edition 2.0 2017-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 1: Common specifications for alternating current switchgear and
controlgear
Appareillage à haute tension –
Partie 1: Spécifications communes pour appareillage à courant alternatif
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-4353-4
– 2 – IEC 62271-1:2017 IEC 2017
CONTENTS
FOREWORD . 8
INTRODUCTION . 11
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 14
3.1 General terms and definitions . 15
3.2 Assemblies of switchgear and controlgear . 18
3.3 Parts of assemblies . 18
3.4 Switching devices . 18
3.5 Parts of switchgear and controlgear . 18
3.6 Operational characteristics of switchgear and controlgear . 22
3.6.5 Terms and definitions relative to pressure (or density) . 23
3.6.6 Terms and definitions relating to gas and vacuum tightness . 23
3.6.7 Terms and definitions relating to liquid tightness. 25
3.7 Characteristic quantities . 25
3.8 Index of definitions . 26
4 Normal and special service conditions . 28
4.1 Normal service conditions . 28
4.1.1 General . 28
4.1.2 Indoor switchgear and controlgear . 28
4.1.3 Outdoor switchgear and controlgear . 29
4.2 Special service conditions . 29
4.2.1 General . 29
4.2.2 Altitude . 29
4.2.3 Exposure to pollution . 30
4.2.4 Temperature and humidity . 30
4.2.5 Exposure to abnormal vibrations, shock or tilting . 30
4.2.6 Wind speed . 31
4.2.7 Other parameters . 31
5 Ratings . 31
5.1 General . 31
5.2 Rated voltage (U ) . 31
r
5.2.1 General . 31
5.2.2 Range I for rated voltages of 245 kV and below . 31
5.2.3 Range II for rated voltages above 245 kV . 32
5.3 Rated insulation level (U , U , U ) . 32
d p s
5.4 Rated frequency (f ) . 36
r
5.5 Rated continuous current (I ) . 36
r
5.6 Rated short-time withstand current (I ) . 36
k
5.7 Rated peak withstand current (I ) . 37
p
5.8 Rated duration of short-circuit (t ) . 37
k
5.9 Rated supply voltage of auxiliary and control circuits (U ) . 37
a
5.9.1 General . 37
5.9.2 Rated supply voltage (U ) . 37
a
5.10 Rated supply frequency of auxiliary and control circuits . 38
5.11 Rated pressure of compressed gas supply for controlled pressure systems . 38
6 Design and construction . 39
6.1 Requirements for liquids in switchgear and controlgear . 39
6.2 Requirements for gases in switchgear and controlgear . 39
6.3 Earthing of switchgear and controlgear . 39
6.4 Auxiliary and control equipment and circuits . 39
6.4.1 General . 39
6.4.2 Protection against electric shock . 40
6.4.3 Components installed in enclosures . 40
6.5 Dependent power operation . 43
6.6 Stored energy operation . 43
6.6.1 General . 43
6.6.2 Energy storage in gas receivers or hydraulic accumulators . 44
6.6.3 Energy storage in springs (or weights) . 44
6.6.4 Manual charging . 44
6.6.5 Motor charging . 44
6.6.6 Energy storage in capacitors . 44
6.7 Independent unlatched operation (independent manual or power operation) . 44
6.8 Manually operated actuators . 45
6.9 Operation of releases . 45
6.9.1 General . 45
6.9.2 Shunt closing release . 45
6.9.3 Shunt opening release . 45
6.9.4 Capacitor operation of shunt releases . 45
6.9.5 Under-voltage release . 46
6.10 Pressure/level indication . 46
6.10.1 Gas pressure . 46
6.10.2 Liquid level . 46
6.11 Nameplates. 46
6.11.1 General . 46
6.11.2 Application . 46
6.12 Locking devices . 48
6.13 Position indication . 48
6.14 Degrees of protection provided by enclosures . 48
6.14.1 General . 48
6.14.2 Protection of persons against access to hazardous parts and protection
of the equipment against ingress of solid foreign objects (IP coding) . 48
6.14.3 Protection against ingress of water (IP coding) . 48
6.14.4 Protection against mechanical impact under normal service conditions
(IK coding) . 48
6.15 Creepage distances for outdoor insulators . 49
6.16 Gas and vacuum tightness . 49
6.16.1 General . 49
6.16.2 Controlled pressure systems for gas . 49
6.16.3 Closed pressure systems for gas . 49
6.16.4 Sealed pressure systems . 50
6.17 Tightness for liquid systems . 50
6.17.1 General . 50
6.17.2 Leakage rates . 50
6.18 Fire hazard (flammability) . 50
– 4 – IEC 62271-1:2017 IEC 2017
6.19 Electromagnetic compatibility (EMC) . 50
6.20 X-ray emission . 51
6.21 Corrosion . 51
6.22 Filling levels for insulation, switching and/or operation . 51
7 Type tests . 51
7.1 General . 51
7.1.1 Basics . 51
7.1.2 Information for identification of test objects . 51
7.1.3 Information to be included in type-test reports . 52
7.2 Dielectric tests . 52
7.2.1 General . 52
7.2.2 Ambient air conditions during tests . 52
7.2.3 Wet test procedure . 53
7.2.4 Arrangement of the equipment . 53
7.2.5 Criteria to pass the test . 54
7.2.6 Application of the test voltage and test conditions . 54
7.2.7 Tests of switchgear and controlgear of U ≤ 245 kV . 58
r
7.2.8 Tests of switchgear and controlgear of U > 245 kV . 58
r
7.2.9 Artificial pollution tests for outdoor insulators . 59
7.2.10 Partial discharge tests . 59
7.2.11 Dielectric tests on auxiliary and control circuits . 59
7.2.12 Voltage test as condition check . 59
7.3 Radio interference voltage (RIV) test . 60
7.4 Resistance measurement . 60
7.4.1 Measurement of the resistance of auxiliary contacts class 1 and class 2. 60
7.4.2 Measurement of the resistance of auxiliary contacts class 3 . 60
7.4.3 Electrical continuity of earthed metallic parts test . 60
7.4.4 Resistance measurement of contacts and connections in the main
circuit as a condition check . 60
7.5 Continuous current tests . 61
7.5.1 Condition of the test object . 61
7.5.2 Arrangement of the equipment . 61
7.5.3 Test current and duration . 62
7.5.4 Temperature measurement during test . 63
7.5.5 Resistance of the main circuit . 64
7.5.6 Criteria to pass test . 64
7.6 Short-time withstand current and peak withstand current tests . 68
7.6.1 General . 68
7.6.2 Arrangement of the equipment and of the test circuit . 68
7.6.3 Test current and duration . 69
7.6.4 Conditions of the test object after test . 70
7.7 Verification of the protection . 70
7.7.1 Verification of the IP coding . 70
7.7.2 Verification of the IK coding . 70
7.8 Tightness tests . 71
7.8.1 General . 71
7.8.2 Controlled pressure systems for gas . 72
7.8.3 Closed pressure systems for gas . 72
7.8.4 Sealed pressure systems . 73
7.8.5 Liquid tightness tests . 73
7.9 Electromagnetic compatibility tests (EMC) . 73
7.9.1 Emission tests . 73
7.9.2 Immunity tests on auxiliary and control circuits . 76
7.9.3 Additional EMC tests on auxiliary and control circuits . 78
7.10 Additional tests on auxiliary and control circuits . 79
7.10.1 General . 79
7.10.2 Functional tests . 79
7.10.3 Verification of the operational characteristics of auxiliary contacts . 79
7.10.4 Environmental tests . 80
7.10.5 Dielectric test . 81
7.11 X-radiation test for vacuum interrupters . 81
7.11.1 General requirements . 81
7.11.2 Test voltage and measurement procedure . 83
7.11.3 Acceptance criteria . 83
8 Routine tests . 84
8.1 General . 84
8.2 Dielectric test on the main circuit . 84
8.3 Tests on auxiliary and control circuits . 85
8.3.1 Inspection of auxiliary and control circuits, and verification of conformity
to the circuit diagrams and wiring diagrams . 85
8.3.2 Functional tests . 85
8.3.3 Verification of protection against electrical shock . 85
8.3.4 Dielectric tests . 85
8.4 Measurement of the resistance of the main circuit . 85
8.5 Tightness test . 86
8.5.1 General . 86
8.5.2 Controlled pressure systems for gas . 86
8.5.3 Closed pressure systems for gas . 86
8.5.4 Sealed pressure systems . 86
8.5.5 Liquid tightness tests . 86
8.6 Design and visual checks . 86
9 Guide to the selection of switchgear and controlgear (informative) . 87
9.1 General . 87
9.2 Selection of rated values . 87
9.3 Cable-interface considerations . 87
9.4 Continuous or temporary overload due to changed service conditions . 87
9.5 Environmental aspects . 87
9.5.1 Service conditions . 87
9.5.2 Clearances affected by service conditions . 87
9.5.3 High humidity . 87
9.5.4 Solar radiation . 88
10 Information to be given with enquiries, tenders and orders (informative) . 88
10.1 General . 88
10.2 Information with enquiries and orders . 88
10.3 Information with tenders . 89
11 Transport, storage, installation, operating instructions and maintenance. 90
11.1 General . 90
11.2 Conditions during transport, storage and installation . 90
– 6 – IEC 62271-1:2017 IEC 2017
11.3 Installation . 90
11.3.1 General . 90
11.3.2 Unpacking and lifting . 90
11.3.3 Assembly . 91
11.3.4 Mounting . 91
11.3.5 Connections . 91
11.3.6 Information about gas and gas mixtures for controlled and closed
pressure systems . 91
11.3.7 Final installation inspection . 92
11.3.8 Basic input data by the user . 92
11.3.9 Basic input data by the manufacturer . 92
11.4 Operating instructions . 93
11.5 Maintenance . 93
11.5.1 General . 93
11.5.2 Information about fluids and gas to be included in maintenance manual . 93
11.5.3 Recommendations for the manufacturer . 93
11.5.4 Recommendations for the user . 94
11.5.5 Failure report . 95
12 Safety . 96
12.1 General . 96
12.2 Precautions by manufacturers . 97
12.3 Precautions by users . 97
13 Influence of the product on the environment . 97
Annex A (normative) Identification of test objects . 99
A.1 General . 99
A.2 Data . 99
A.3 Drawings. 99
Annex B (informative) Determination of the equivalent RMS value of a short-time
current during a short-circuit of a given duration . 101
Annex C (normative) Method for the weatherproofing test for outdoor switchgear and
controlgear . 102
Annex D (informative) References for auxiliary and control circuit components . 105
Annex E (normative) Tolerances on test quantities during tests . 107
Annex F (informative) Information and technical requirements to be given with
enquiries, tenders and orders . 110
F.1 General . 110
F.2 Normal and special service conditions (refer to Clause 4) . 110
F.3 Ratings (refer to Clause 5) . 111
F.4 Design and construction (refer to Clause 6) . 111
F.5 System information . 112
F.6 Documentation for enquiries and tenders . 112
Annex G (informative) List of symbols . 113
Annex H (informative) Electromagnetic compatibility on site . 114
Annex I (informative) List of notes concerning certain countries . 115
Annex J (informative) Extension of validity of type tests . 116
J.1 General . 116
J.2 Dielectric tests . 116
J.3 Short-time withstand current tests . 116
J.4 Continuous current test . 116
J.5 Electromagnetic immunity test on auxiliary and control circuits . 117
J.6 Environmental tests on auxiliary and control circuits . 117
Annex K (informative) Exposure to pollution . 118
K.1 General . 118
K.2 Pollution levels . 118
K.3 Minimum requirements for switchgear . 118
Bibliography . 120
Figure 1 – Examples of classes of contacts. 43
Figure 2 – Diagram of connections of a three-pole switching device . 55
Figure 3 – Diagram of a test circuit for the radio interference voltage test . 74
Figure 4 – Test location of radiation survey instrument . 83
Figure B.1 – Determination of short-time current . 101
Figure C.1 – Arrangement for weatherproofing test . 103
Figure C.2 – Nozzle for weatherproofing test . 104
Table 1 – Rated insulation levels for rated voltages of range I, series I . 33
Table 2 – Rated insulation levels for rated voltages of range I, series II (based on
current practice in some countries, including US) . 34
Table 3 – Rated insulation levels for rated voltages of range II . 35
Table 4 – Additional rated insulation levels for range II, based on current practice in
some countries, including US . 36
Table 5 – Peak factors for rated peak withstand current . 37
Table 6 – Direct current voltage . 38
Table 7 – Alternating current voltage . 38
Table 8 – Auxiliary contact classes . 42
Table 9 – Nameplate information . 47
Table 10 – Test conditions in general case . 55
Table 11 – Power-frequency test conditions . 56
Table 12 – Impulse test conditions . 57
Table 13 – Test conditions for the alternative method . 57
Table 14 – Limits of temperature and temperature rise for various parts, materials and
dielectrics of high-voltage switchgear and controlgear . 65
Table 15 – Permissible leakage rates for gas systems . 72
Table 16 – Application of voltages at the fast transient/burst test . 77
Table 17 – Application of voltage at the damped oscillatory wave test. 77
Table 18 – Assessment criteria for transient disturbance immunity. 78
Table D.1 – List of reference documents for auxiliary and control circuit components . 105
Table E.1 – Tolerances on test quantities for type test . 108
Table K.1 – Environmental examples by site pollution severity (SPS) class. 119
Table K.2 – Minimum nominal specific creepage distance by pollution level . 119
– 8 – IEC 62271-1:2017 IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 1: Common specifications for alternating
current switchgear and controlgear
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
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6) All users should ensure that they have the latest edition of this publication.
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62271-1 has been prepared by technical committee 17: High-
voltage switchgear and controlgear.
This second edition cancels and replaces the first edition published in 2007 and Amendment
1:2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
New numbering in accordance with ISO/IEC directives, Part 2 (2016) and IEEE
Std. C37.100.1.
4.1.2 a) The normal service condition for indoor switchgear is limited to one range of 40 °C
to –5 °C.
4.1.3 a) The normal service condition for outdoor switchgear is limited to one range of 40 °C
to –25 °C.
4.2.2: The specifications from IEC 60071-2:1996 are adopted for altitude correction factors
above 1 000 m.
5.2.2: Range I, the rated voltage of 40,5 kV is added Series I Table 1; Table 2 and Table 4
are updated on recommendation of the US National Committee.
6.8: New subclause added for manual operated actuators consistent with “Man Machine
Interface” recommendations of IEC 60447 [1] .
7.2.6.1:Insert the wording regarding preliminary impulses across open vacuum interrupters
according to the result of IEC 17/1026/RQ.
7.3: Changed the requirement for radio interference voltage to a rated voltage level of
245 kV and above, instead of 123 kV and above. This change is based on reported
positive test and service experience of utility representatives in the maintenance
team of this standard.
7.5.6, Table 14:
a) Introduced the distinction of parts in “OG” (ox
...
기사 제목: IEC 62271-1:2017 - 고전압 스위치기어 및 제어기어 - 제1부: 교류 스위치기어 및 제어기어를 위한 일반 사양 기사 내용: IEC 62271-1:2017은 실내 및/또는 실외 설치용, 60 Hz 이하의 봉매도 주파수에서 작동하며, 1,000 V 이상의 고정압을 가진 교류 스위치기어 및 제어기어에 적용됩니다. 이 문서는 특정 유형의 스위치기어 및 제어기어에 대한 관련 IEC 표준에서 다르게 규정하지 않는 한 모든 고전압 스위치기어 및 제어기어에 적용됩니다. 이 번째 개정판은 2007년에 발표된 초판과 개정 1판:2011을 취소하고 대체합니다. 이 버전은 기술적 개정을 구성합니다. 이 버전에는 이전 버전에 비해 다음과 같은 중요한 기술적 변경 사항이 포함되어 있습니다. ISO/IEC 지침, 제2판(2016) 및 IEEE 표준 C37.100.1에 따른 새로운 번호 매기기. 4.1.2 a) 실내 스위치기어의 정상 서비스 조건은 40 °C에서 -5 °C의 범위로 제한됩니다. 4.1.3 a) 실외 스위치기어의 정상 서비스 조건은 40 °C에서 -25 °C의 범위로 제한됩니다. 4.2.2: IEC 60071-2:1996의 사양은 1,000 m를 초과하는 고도 교정 계수에 적용됩니다. 5.2.2: 40.5 kV의 정격 전압이 I 범위에 추가되었습니다. I 테이블 1; 테이블 2 및 테이블 4는 미국 국가위원회의 추천에 따라 업데이트되었습니다. 6.8: IEC 60447의 "인간-기계 인터페이스" 권고를 일치시키기 위해 수동 조작하는 액추에이터에 대한 새로운 하위 절이 추가되었습니다. 7.2.6.1: IEC 17/1026/RQ의 결과에 따라 개방형 진공 차단기 사이의 예비 유도에 대한 문구를 삽입합니다. 7.3: 라디오 장애 전압에 대한 요구 사항을 123 kV 이상이 아닌 245 kV 이상의 정격 전압 수준으로 변경했습니다. 이 변경 사항은 유틸리티 대표들의 테스트 및 서비스 경험에 기초합니다. 7.5.6, 테이블 14: a. "OG" (산화 가스) 또는 "NOG" (비산화 가스)의 부분을 구분하기 위해 이전의 "공기" 및 "SF6"을 대체합니다. b. IEC TR 60943에 따라 1 및 2 그룹의 일부 부품에 대한 허용 온도 상승을 증가시켰습니다. c. 접근 가능한 표면 범주에 대한 IEC Guide 117 참조를 기준으로 온도 상승 허용 범위의 정의를 확장했습니다. 7.5.6.2의 15점도 참조하십시오. 7.5.6.2: 5점이 수정되어 "OG" 및 "NOG" 가스의 도입을 명확히합니다. 7.10: IEC 60068 시리즈의 관련 시험 표준이 수정되거나 철회되어 일부 시험을 삭제했습니다. 7.11.3: X-방사선 시험에 대한 수용 기준을 더 높은 정격 진공 차단기를 인식하도록 수정했습니다. 이전 정보적 부록 H: 부식은 삭제되었으며 이 내용은 IEC TR 62271-306의 일부입니다. 새로운 정보적 부록 J: 유형 시험의 유효성 연장에 대한 정보적 가이드라인 추가 새로운 정보적 부록 K: 오염에 노출되는 것에 대한 정보적 가이드라인 추가 2021년 5월의 Interpretation Sheet 1의 내용이 이 복사본에 포함되었습니다.
The article is about the second edition of IEC 62271-1:2017, which is a standard that applies to high-voltage switchgear and controlgear. The standard specifies common specifications for AC switchgear and controlgear designed for indoor and/or outdoor installation, with rated voltages above 1,000 V and service frequencies up to 60 Hz. This edition of the standard includes several technical changes compared to the previous edition. Some of the notable changes include new numbering based on ISO/IEC directives and IEEE standards, revised temperature ranges for indoor and outdoor switchgear, adoption of altitude correction factors from IEC 60071-2:1996 for altitudes above 1,000 m, and updates to tables and recommendations related to voltage ratings. Other changes include the addition of a new subclause for manual operated actuators, clarification on preliminary impulses across open vacuum interrupters, revised requirements for radio interference voltage, introduction of distinctions for parts in oxidizing gas or non-oxidizing gas, increased allowable temperature rise for certain parts, expanded definition of allowable temperature rise for accessible surfaces, removal of some tests due to modified or withdrawn standards, deletion of an informative annex on corrosion (content now part of IEC TR 62271-306), and addition of informative guidelines on the extension of type test validity and exposure to pollution. The article also mentions that the contents of Interpretation Sheet 1 from May 2021 are included in this edition of the standard.
記事タイトル：IEC 62271-1:2017 - 高電圧スイッチギアおよび制御機器- 第1部：交流スイッチギアおよび制御機器の共通仕様 記事の内容：IEC 62271-1:2017は、屋内および/または屋外設置、定格電圧が1,000 Vを超え、60 Hz以下のサービス周波数で動作する交流スイッチギアおよび制御機器に適用されます。 この文書は、スイッチギアおよび制御機器の特定のタイプに関する該当するIEC標準以外で、すべての高電圧スイッチギアおよび制御機器に適用されます。 この第2版では、以前の版と比較して以下の重要な技術的変更が含まれています： ISO/IEC規則、第2部（2016）およびIEEE規格C37.100.1に基づく新しい番号付け。 4.1.2 a）屋内スイッチギアの正常な使用条件は、40℃から-5℃の範囲に制限されます。 4.1.3 a）屋外スイッチギアの正常な使用条件は、40℃から-25℃の範囲に制限されます。 4.2.2：高度1,000m以上の高度補正係数には、IEC 60071-2:1996の仕様が採用されています。 5.2.2：評価電圧40.5 kVがIシリーズテーブル1に追加されました。米国国内委員会の推奨に基づいて、テーブル2およびテーブル4が更新されました。 6.8：IEC 60447の「人間-機械インタフェース」の推奨事項に一貫性を持たせるために、手動操作アクチュエータに関する新しいサブクラウスが追加されました。 7.2.6.1：IEC 17/1026/RQの結果に基づき、開放型真空遮断器間の予備インパルスに関する文言を挿入します。 7.3：電波干渉電圧の要件を123 kV以上ではなく、245 kV以上の定格電圧レベルに変更しました。この変更は、この規格のメンテナンスチームのユーティリティ代表のポジティブな試験およびサービス経験に基づいています。 7.5.6、テーブル14： a. "OG"（酸化ガス）または"NOG"（非酸化ガス）の部品の区別を導入し、以前の"空気"および"SF6"を置き換えました。 b. IEC TR 60943に基づき、1および2グループの一部の部品の許容温度上昇を増加させました。 c. IEC Guide 117を参照して、アクセス可能な表面の許容温度上昇のカテゴリの定義を拡大しました。7.5.6.2の15項も参照してください。 7.5.6.2：5項が修正され、"OG"および"NOG"ガスの導入が明確にされました。 7.10：IEC 60068シリーズの関連する試験規格が変更または撤回されたため、一部の試験が削除されました。 7.11.3：X線放射試験の受け入れ基準が改定され、より高いレートの真空遮断器を認識するようになりました。 以前の補足資料H：腐食は削除され、その内容はIEC TR 62271-306の一部になりました。 新しい補足資料J（情報提供）：試験の有効期間延長に関する情報提供型ガイドラインが追加されました。 新しい補足資料K（情報提供）：汚染への曝露に関する情報提供型ガイドラインが追加されました。 2021年5月の解釈シート1の内容がこの複製物に含まれています。
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