IEC 60376:2018
(Main)Specification of technical grade sulphur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipment
Specification of technical grade sulphur hexafluoride (SF<sub>6</sub>) and complementary gases to be used in its mixtures for use in electrical equipment
IEC 60376:2018 defines the quality for technical grade sulphur hexafluoride (SF6) and complementary gases such as nitrogen (N2) and carbon tetra-fluoride (CF4), for use in electrical equipment. Detection techniques, covering both laboratory and in-situ portable instrumentation, applicable to the analysis of SF6, N2 and CF4 gases prior to the introduction of these gases into the electrical equipment are also described in this document.
This document provides some information on sulphur hexafluoride in Annex A and on the environmental effects of SF6 in Annex B.
Information about SF6 by-products and the procedure for evaluating the potential effects of SF6 by-products on human health are covered by IEC 60480, their handling and disposal being carried out according to international and local regulations with regard to the impact on the environment. Handling of SF6 and its mixtures is covered by IEC 62271-4.
Procedures to determine SF6 leakages are described in IEC 60068-2-17.
For the purposes of this document, the complementary gases used in SF6 mixtures will be limited to N2 or CF4.
This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the requirements for the use of SF6 in electrical equipment have been confirmed;
b) a specification for complementary gases to be used in SF6 mixtures with N2 and CF4 has been included;
c) the introduction and scope have been merged;
d) a new repartition of the annexes of IEC 60376, IEC 60480 and IEC 62271-4 has been included.
Spécification de la qualité technique de l'hexafluorure de soufre (SF<sub>6</sub>) et des gaz complémentaires à employer dans les mélanges de SF<sub>6</sub> pour utilisation dans les matériels électriques
L'IEC 60376:2018 définit la qualité technique de l'hexafluorure de soufre (SF6) et des gaz complémentaires (l'azote (N2) et le tétrafluorure de carbone (CF4), par exemple) utilisés dans les matériels électriques. Le présent document décrit également les techniques de détection couvrant les instruments de laboratoire et les instruments portables in situ, applicables à l'analyse des gaz SF6, N2 et CF4 avant leur introduction dans les matériels électriques.
Le présent document donne des informations relatives à l'hexafluorure de soufre (Annexe A) et à ses effets sur l'environnement (Annexe B).
Les informations relatives aux sous-produits du SF6 et à la procédure d'évaluation de leurs effets potentiels sur la santé humaine sont données dans l'IEC 60480, leur manipulation et leur élimination étant assurées selon les réglementations internationales et locales, du fait de leur effet sur l'environnement. La manipulation du SF6 et des mélanges de SF6 est couverte par l'IEC 62271-4.
Les procédures de détermination des fuites de SF6 sont décrites dans l'IEC 60068-2-17.
Pour les besoins du présent document, les gaz complémentaires utilisés dans les mélanges de SF6 se limitent au N2 et au CF4.
Cette troisième édition annule et remplace la deuxième édition parue en 2005. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) les exigences en matière d'utilisation du SF6 dans les matériels électriques ont été confirmées;
b) une spécification relative aux gaz complémentaires (N2 et CF4 par exemple) à employer dans les mélanges de SF6 est incluse;
c) l'introduction et le domaine d'application ont été fusionnés;
d) les annexes de l'IEC 60376, l'IEC 60480 et l'IEC 62271-4 ont fait l'objet d'une nouvelle répartition.
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IEC 60376 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
Specification of technical grade sulphur hexafluoride (SF ) and complementary
gases to be used in its mixtures for use in electrical equipment
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
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IEC 60376 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
Specification of technical grade sulphur hexafluoride (SF ) and complementary
gases to be used in its mixtures for use in electrical equipment
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.040.20 ISBN 978-2-8322-5744-9
– 2 – IEC 60376:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
4 General requirements . 8
5 Requirements for technical grade SF . 8
6 Requirements for complementary gases to be used in SF mixtures . 9
7 Environmental impact . 10
8 Handling, storage and transportation . 10
8.1 Gas handling procedures . 10
8.2 Storage and transportation . 10
Annex A (informative) Sulphur hexafluoride . 11
A.1 General . 11
A.2 Chemical properties . 11
A.3 Physical properties . 11
A.4 Electrical properties . 12
Annex B (informative) Environmental effects of SF and its mixtures . 14
B.1 General . 14
B.2 Ecotoxicology . 14
B.3 Ozone depletion . 14
B.4 Global warming/climate change (greenhouse effect) . 14
B.5 Reducing the environmental impact of the use of SF and CF in
6 4
electrical equipment . 15
Annex C (informative) Detection techniques . 16
C.1 Detection techniques of SF . 16
C.2 Detection techniques of N . 17
C.3 Detection techniques of CF . 17
Bibliography . 18
Figure A.1 – Pressure/temperature/density characteristics for SF [3] . 12
Table 1 – Requirements for technical grade SF . 8
Table 2 – Requirements for N to be used in SF mixtures . 9
2 6
Table 3 – Requirements for CF to be used in SF mixtures . 9
4 6
Table A.1 – Main chemical characteristics of SF [3] . 11
Table A.2 – Main physical characteristics of SF [3] . 12
Table A.3 – Main electrical characteristics of SF [3] . 13
Table C.1 – Detection techniques for laboratory analysis of technical grade SF (not
exhaustive) . 16
Table C.2 – Detection techniques for on-site analysis of technical grade SF (not
exhaustive) . 16
Table C.3 – Detection techniques for laboratory analysis of technical grade N used in
SF mixtures (not exhaustive). 17
Table C.4 – Detection techniques for laboratory analysis of technical grade CF used
in SF mixtures (not exhaustive) . 17
– 4 – IEC 60376:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATION OF TECHNICAL GRADE SULPHUR
HEXAFLUORIDE (SF ) AND COMPLEMENTARY GASES
TO BE USED IN ITS MIXTURES FOR USE IN ELECTRICAL EQUIPMENT
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 60376 has been prepared by IEC technical committee 10: Fluids
for electrotechnical applications.
This third edition cancels and replaces the second edition published in 2005. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the requirements for the use of SF in electrical equipment have been confirmed;
b) a specification for complementary gases to be used in SF mixtures with N and CF has
6 2 4
been included;
c) the introduction and scope have been merged;
d) a new repartition of the annexes of IEC 60376, IEC 60480 and IEC 62271-4 has been
included.
The text of this International Standard is based on the following documents:
FDIS Report on voting
10/1056/FDIS 10/1060/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.
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.
A bilingual version of this publication may be issued at a later date.
– 6 – IEC 60376:2018 © IEC 2018
SPECIFICATION OF TECHNICAL GRADE SULPHUR
HEXAFLUORIDE (SF ) AND COMPLEMENTARY GASES
TO BE USED IN ITS MIXTURES FOR USE IN ELECTRICAL EQUIPMENT
1 Scope
This document defines the quality for technical grade sulphur hexafluoride (SF ) and
complementary gases such as nitrogen (N ) and carbon tetra-fluoride (CF ), for use in
2 4
electrical equipment. Detection techniques, covering both laboratory and in-situ
portable instrumentation, applicable to the analysis of SF , N and CF gases prior to the
6 2 4
introduction of these gases into the electrical equipment are also described in this document.
This document p
...
IEC 60376 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specification of technical grade sulphur hexafluoride (SF ) and complementary
gases to be used in its mixtures for use in electrical equipment
Spécification de la qualité technique de l'hexafluorure de soufre (SF ) et des gaz
complémentaires à employer dans les mélanges de SF pour utilisation dans les
matériels électriques
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
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3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
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IEC 60376 ®
Edition 3.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Specification of technical grade sulphur hexafluoride (SF ) and complementary
gases to be used in its mixtures for use in electrical equipment
Spécification de la qualité technique de l'hexafluorure de soufre (SF ) et des gaz
complémentaires à employer dans les mélanges de SF pour utilisation dans les
matériels électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.040.20 ISBN 978-2-8322-6148-4
– 2 – IEC 60376:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 7
4 General requirements . 8
5 Requirements for technical grade SF . 8
6 Requirements for complementary gases to be used in SF mixtures . 9
7 Environmental impact . 10
8 Handling, storage and transportation . 10
8.1 Gas handling procedures . 10
8.2 Storage and transportation . 10
Annex A (informative) Sulphur hexafluoride . 11
A.1 General . 11
A.2 Chemical properties . 11
A.3 Physical properties . 11
A.4 Electrical properties . 12
Annex B (informative) Environmental effects of SF and its mixtures . 14
B.1 General . 14
B.2 Ecotoxicology . 14
B.3 Ozone depletion . 14
B.4 Global warming/climate change (greenhouse effect) . 14
B.5 Reducing the environmental impact of the use of SF and CF in
6 4
electrical equipment . 15
Annex C (informative) Detection techniques . 16
C.1 Detection techniques of SF . 16
C.2 Detection techniques of N . 17
C.3 Detection techniques of CF . 17
Bibliography . 18
Figure A.1 – Pressure/temperature/density characteristics for SF [3] . 12
Table 1 – Requirements for technical grade SF . 8
Table 2 – Requirements for N to be used in SF mixtures . 9
2 6
Table 3 – Requirements for CF to be used in SF mixtures . 9
4 6
Table A.1 – Main chemical characteristics of SF [3] . 11
Table A.2 – Main physical characteristics of SF [3] . 12
Table A.3 – Main electrical characteristics of SF [3] . 13
Table C.1 – Detection techniques for laboratory analysis of technical grade SF (not
exhaustive) . 16
Table C.2 – Detection techniques for on-site analysis of technical grade SF (not
exhaustive) . 16
Table C.3 – Detection techniques for laboratory analysis of technical grade N used in
SF mixtures (not exhaustive). 17
Table C.4 – Detection techniques for laboratory analysis of technical grade CF used
in SF mixtures (not exhaustive) . 17
– 4 – IEC 60376:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATION OF TECHNICAL GRADE SULPHUR
HEXAFLUORIDE (SF ) AND COMPLEMENTARY GASES
TO BE USED IN ITS MIXTURES FOR USE IN ELECTRICAL EQUIPMENT
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. I
...
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