SIST EN IEC 63360:2025
(Main)Fluids for electrotechnical application: Mixtures of gases alternative to SF6
Fluids for electrotechnical application: Mixtures of gases alternative to SF6
IEC 63360:2025 This document specifies the quality of gases alternative to SF6 (subsequently referred to as gases) for use in electrical power equipment.
Detection techniques, applicable to the analysis of gases prior to their introduction into the electrical power equipment, are also described in this document.
Flüssigkeiten für elektrotechnische Anwendung: Gasgemische als Alternative zu SF6
Fluides pour applictions électrotechniques: Spécifications des gaz alternatifs au sf6 à utiliser dans les matériels électriques
IEC 63360:2025 Le présent document définit la qualité technique des gaz alternatifs au SF6 (dénommés par la suite "gaz") destinés à être utilisés dans les matériels électriques.
Le présent document décrit également les techniques de détection applicables à l'analyse des gaz avant leur introduction dans les matériels électriques.
Tekočine za elektrotehniko - Mešanica plinov kot alternativa SF6
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2025
Tekočine za elektrotehniko - Mešanica plinov kot alternativa SF6
Fluids for electrotechnical application: Mixtures of gases alternative to SF6
Flüssigkeiten für elektrotechnische Anwendung: Gasgemische als Alternative zu SF6
Fluides pour applictions électrotechniques: Spécifications des gaz alternatifs au sf6 à
utiliser dans les matériels électriques
Ta slovenski standard je istoveten z: EN IEC 63360:2025
ICS:
29.040.20 Izolacijski plini Insulating gases
71.100.20 Industrijski plini Gases for industrial
application
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 63360
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2025
ICS 29.040.20
English Version
Fluids for electrotechnical application - Specification of gases
alternative to SF6 to be used in electrical power equipment
(IEC 63360:2025)
Fluides pour applications électrotechniques - Spécifications Flüssigkeiten für elektrotechnische Anwendungen -
des gaz alternatifs au SF6 destinés à être utilisés dans les Spezifikation von Gasen als Alternative zu SF6 zur
matériels électriques Verwendung in elektrischen Energieanlagen
(IEC 63360:2025) (IEC 63360:2025)
This European Standard was approved by CENELEC on 2025-03-06. 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,
Türkiye 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63360:2025 E
European foreword
The text of document 10/1219/FDIS, future edition 1 of IEC 63360, prepared by TC 10 "Fluids for
electrotechnical applications" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 63360:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-03-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-03-31
document have to be withdrawn
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63360:2025 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 standard indicated:
1 2
IEC 63359:— NOTE Approved as EN IEC 63359:— (not modified)
IEC 62474:2018 NOTE Approved as EN IEC 62474:2019 (not modified)
IEC 60480:2019 NOTE Approved as EN IEC 60480:2019 (not modified)
IEC 60376:2018 NOTE Approved as EN IEC 60376:2018 (not modified)
IEC 62271-1:2017 NOTE Approved as EN 62271-1:2017 (not modified)
IEC 62271-1:2017/AMD1:2021 NOTE Approved as EN 62271-1:2017/A1:2021 (not modified)
IEC 62271-200:2021 NOTE Approved as EN IEC 62271-200:2021 (not modified)
IEC 62271-203:2022 NOTE Approved as EN IEC 62271-203:2022 (not modified)
IEC 80000 (series) NOTE Approved as EN IEC 80000 (series)
ISO 80000 (series) NOTE Approved as EN ISO 80000 (series)
ISO 80000-9:2019 NOTE Approved as EN ISO 80000-9:2019 (not modified)
Under preparation. Stage at the time of publication: IEC/CD 63359:2024.
Under preparation. Stage at the time of publication: prEN IEC 63359:2024.
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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-212 - International Electrotechnical Vocabulary - - -
Part 212: Electrical insulating solids, liquids
and gases
IEC 60050-441 - International Electrotechnical Vocabulary. - -
Switchgear, controlgear and fuses
IEC 60050-826 - International Electrotechnical Vocabulary - - -
Part 826: Electrical installations
IEC 62271-4 2022 High-voltage switchgear and controlgear - EN IEC 62271-4 2022
Part 4: Handling procedures for gases for
insulation and/or switching
IEC 63360 ®
Edition 1.0 2025-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fluids for electrotechnical application – Specification of gases alternative to
SF6 to be used in electrical power equipment
Fluides pour applications électrotechniques – Spécifications des gaz alternatifs
au SF6 destinés à être utilisés dans les matériels électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.040.20 ISBN 978-2-8327-0161-4
– 2 – IEC 63360:2025 © IEC 2025
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 9
4 Requirements for gases . 9
4.1 General . 9
4.2 Compressed air . 10
4.3 Technical grade synthetic air . 10
4.4 Technical grade natural-origin gases . 10
4.5 Technical grade C F O (C5-FK) . 11
5 10
4.6 Technical grade C F N (C4-FN) . 12
4 7
5 Mixing ratio and tolerances . 12
6 Handling, storage and transportation . 13
6.1 Gas handling procedures . 13
6.2 Storage and transportation . 13
7 Environmental impact . 13
Annex A (informative) Environmental, health, and safety effects of gases . 14
A.1 General . 14
A.2 Physical hazards . 14
A.3 Hazard to human health . 14
A.4 Environmental hazard . 15
A.5 Ozone depletion . 16
A.6 Global warming/climate change (greenhouse effect) . 16
A.7 Reducing the environmental impact of the use of gases in electrical
power equipment . 17
Annex B (informative) On-site detection techniques . 18
Annex C (informative) Mole fraction (% mol) versus volume fraction (% vol) . 22
C.1 General . 22
C.2 Definitions of the fractions and compressibility factor . 22
C.2.1 Mole fraction (x) . 22
C.2.2 Volume fraction (Ф ) . 22
i
C.2.3 Mass fraction (w) . 23
C.2.4 Compressibility factor (Z) . 23
C.2.5 Names and symbols . 24
C.3 Examples % mol vs % vol for C4-FN / O / CO mixtures . 24
2 2
C.3.1 General . 24
C.3.2 Variation with pressure . 25
C.3.3 Variation with temperature . 25
Bibliography . 27
Figure C.1 – Shift between mole and volume fractions with pressure for two mixtures
containing 5 % mol and 3,5 % mol C4-FN, 13 % mol O and the rest in CO (20 °C) . 25
2 2
IEC 63360:2025 © IEC 2025 – 3 –
Figure C.2 – Shift between mole and volume fractions with temperature for two
mixtures containing 5 % mol and 3,5 % mol C4-FN, 13 % mol O and the rest in CO
2 2
(101,3 kPa) . 26
Table 1 – Requirements for compressed air for electrical power equipment . 10
Table 2 – Requirements for technical grade synthetic air . 10
Table 3 – Requirements for technical grade nitrogen . 11
Table 4 – Requirements for technical grade oxygen . 11
Table 5 – Requirements for technical grade carbon dioxide . 11
Table 6 – Requirements for technical grade C5-FK . 12
Table 7 – Requirements for technical grade C4-FN . 12
Table A.1 – Global warming potential (GWP) of components of the gases according to
IPCC AR6 [12] or [13] . 17
Table B.1 – Detection techniques for the analysis of synthetic air . 18
Table B.2 – Detection techniques for the analysis of compressed air . 19
Table B.3 – Detection techniques for the analysis of natural-origin gases mixtures . 20
Table B.4 – Detection techniques for the analysis of C5-FK mixtures . 20
Table B.5 – Detection techniques for the analysis of C4-FN mixtures .
...
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