IEC 62271-209:2019
(Main)High-voltage switchgear and controlgear - Part 209: Cable connections for gas-insulated metal-enclosed switchgear for rated voltages above 52 kV - Fluid-filled and extruded insulation cables - Fluid-filled and dry-type cable terminations
High-voltage switchgear and controlgear - Part 209: Cable connections for gas-insulated metal-enclosed switchgear for rated voltages above 52 kV - Fluid-filled and extruded insulation cables - Fluid-filled and dry-type cable terminations
IEC 62271-209:2019 covers the connection assembly of fluid-filled and extruded cables to gas-insulated metal enclosed switchgear (GIS), in single- or three-phase arrangements where the cable terminations are fluid-filled or dry-type and there is a separating insulating barrier between the cable insulation and the gas insulation of the switchgear. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) New numbering in accordance with ISO/IEC directives, Part 2 (2016) and to IEC 62271‑1:2017;
b) Clause 3: addition of a definition for plug-in cable termination, filling pressure and minimum function pressure for insulation;
c) Clause 7: An additional dielectric type test for plug-in cable termination was added; also a pressure type test as well as a leak rate test on the insulator of a cable termination was implemented;
d) Clause 12: New clause about safety practices;
e) Clause 13: New clause about influence of the product on the environment;
f) New informative Annex A: Mechanical forces applied on the flange of the cable connection enclosure.
Appareillage à haute tension - Partie 209: Raccordement de câbles pour appareillage sous enveloppe métallique à isolation gazeuse de tension assignée supérieure à 52 kV - Câbles remplis d’un fluide ou à isolation extrudée - Extrémité de câble de type sec ou remplie d'un fluide
L'IEC 62271-209:2019 est applicable à l'assemblage de raccordement de câbles remplis d’un fluide ou à isolation extrudée au poste sous enveloppe métallique (PSEM), dans une disposition unipolaire ou tripolaire. Les extrémités de câble sont remplies d’un fluide ou de type sec et une séparation isolante se trouve entre le fluide d'isolation du câble et l'isolation gazeuse de l'appareillage. Cette deuxième édition annule et remplace la première édition parue en 2007. Cette édition constitue une révision technique. Cette édition inclut les modifications majeures suivantes par rapport à l'édition précédente:
a) Nouvelle numérotation conformément aux directives ISO/IEC, Partie 2 (2016) et à l’IEC 62271‑1:2017;
b) Article 3: ajout des définitions d'extrémité de câble embrochable, de pression de remplissage et de pression minimale de fonctionnement;
c) Article 7: Un essai diélectrique de type complémentaire pour les extrémités de câbles embrochables a été ajouté; un essai de pression de type ainsi qu’un essai de taux de fuite type pour l'isolateur des extrémités de câble ont également été appliqués;
d) Article 12: Nouvel article relatif aux pratiques en matière de sécurité;
e) Article 13: Nouvel article relatif à l’influence du produit sur l’environnement;
f) Nouvelle Annexe A informative: Forces mécaniques appliquées sur la bride de l’enveloppe du raccordement de câble.
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IEC 62271-209 ®
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables – Fluid-
filled and dry-type cable terminations
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 62271-209 ®
Edition 2.0 2019-02
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables – Fluid-
filled and dry-type cable terminations
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-6551-2
– 2 – IEC 62271-209:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Normal and special service conditions . 8
4.1 General . 8
4.2 Normal service conditions . 9
4.3 Special service conditions . 9
5 Ratings . 9
5.1 General . 9
5.2 Rated voltage of the equipment of the cable connection (U ) . 9
rm
5.3 Rated insulation level (U , U , U ) . 9
d p s
5.4 Rated frequency (f ) . 9
r
Rated short-time and peak withstand currents and rated duration of short
circuit .
5.5 Rated normal continuous current (I ) and temperature rise . 9
r
5.6 Rated short-time withstand current (I ) . 10
k
5.7 Rated peak withstand current (I ) . 10
p
5.8 Rated duration of short circuit (t ) . 10
k
6 Design and construction requirements . 10
6.1 Gas and vacuum tightness . 10
6.101 Limits of supply . 10
6.101.1 General . 10
6.101.2 Over-voltage protection and earthing . 11
6.102 Rated Filling pressure of insulating gas in the cable connection enclosure . 11
6.103 Pressure withstand requirements . 12
6.104 Mechanical forces on cable terminations . 12
6.105 Switchgear connection interface and cable termination connection interface . 13
7 Type Tests . 13
7.1 General . 13
7.2 Dielectric Electrical type tests of cable terminations . 14
7.2.1 General . 14
7.2.2 Dielectric Electrical type test of cable terminations in a single-phase
enclosure . 14
7.2.3 Dielectric Electrical type test of cable termination in a three-phase
enclosure . 14
7.2.4 Additional electrical type tests on the insulator to be installed by
switchgear manufacturer (plug in cable termination) . 14
7.3 Pressure test on the insulator of a cable termination . 15
7.4 Leak rate type test on the insulator of a cable termination . 15
8 Routine tests . 16
8.1 General . 16
8.2 Pressure test . 16
8.3 Visual inspection . 16
9 Standard dimensions . 16
9.1 General . 16
9.2 Fluid-filled cable terminations . 16
9.3 Dry-type cable terminations . 16
9.4 Three-phase cable termination connection enclosure . 17
10 Information to be given with enquiries, tenders and orders . 17
11 Rules for transport, storage, erection, operation service and maintenance. 17
11.1 General . 17
11.2 Tests after cable system installation . 17
12 Safety practices and constraints during installation of cable connection to
switchgear . 18
13 Influence of the product on the environment . 18
Annex A (informative) Mechanical forces applied on the flange of the cable connection
enclosure . 2
A.1 General . 2
A.2 Recommendation when connecting cable systems to switchgear . 2
Bibliography . 4
Figure 1 – Operating pressure of the SF6 gas insulation in the cable connection
enclosure . 12
Figure 2 – Fluid-filled cable connection assembly – Typical arrangement . 19
Figure 3 – Fluid-filled cable connection – Assembly dimensions . 20
Figure 4 – Dry-type cable connection assembly – Typical arrangement . 21
Figure 5 – Dry-type cable connection assembly – Assembly dimensions . 22
Table 1 – Test voltages for additional electrical type tests according to 7.2.4 . 15
Table A.1 – Moment and forces applied on the flange of the cable connection
enclosure attached to the cable termination during normal operation . 3
– 4 – IEC 62271-209:2019 RLV © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 209: Cable connections for gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV – Fluid-filled and extruded
insulation cables – Fluid-filled and dry-type cable terminations
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,
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Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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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
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other damage of any nature whatsoever, whether direct or
...
IEC 62271-209 EXV ®
Edition 2.1 2022-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62271-209:2019+AMD1:2022 includes the content of
the references made to IEC 62271-1:2017+AMD1:2021 CSV and IEC 62271-203:2011
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables –
Fluid‑filled and dry-type cable-terminations
IEC 62271-209:2022-09 EXV(en)
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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IEC 62271-209 EXV ®
Edition 2.1 2022-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This extended version of IEC 62271-209:2019+AMD1:2022 includes the content of
the references made to IEC 62271-1:2017+AMD1:2021 CSV and IEC 62271-203:2011
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables –
Fluid‑filled and dry-type cable-terminations
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10 ISBN 978-2-8322-5678-7
IEC 62271-1:2017/ISH1:2021 – 1 –
© 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
INT ERPRET AT ION 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
IEC 62271-1:2017-07/ISH1:2021-05(en-fr)
– 2 – IEC 62271-1:2017/ISH1:2021
© IEC 2021
where
k is the altitude correction factor;
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 62271-209:2019+AMD1:2022 EXV
© IEC 2022
CONTENTS
FOREWORD .6
INTRODUCTION TO Amendment 1.8
1 Scope .9
2 Normative references .9
3 Terms and definitions . 12
3.1 General terms and definitions . 12
3.2 Assemblies of switchgear and controlgear . 15
3.3 Parts of assemblies . 15
3.4 Switching devices . 15
3.5 Parts of switchgear and controlgear . 16
3.6 Operational characteristics of switchgear and controlgear . 19
3.7 Characteristic quantities . 23
3.8 Index of definitions . 23
4 Normal and special service conditions . 27
4.1 General . 27
4.2 Normal service conditions . 27
4.2.1 Indoor switchgear and controlgear . 27
4.2.2 Outdoor switchgear and controlgear . 28
4.3 Special service conditions . 28
4.3.1 Altitude . 28
4.3.2 Pollution . 30
4.3.3 Temperature and humidity . 30
4.3.4 Vibrations, shock or tilting . 30
4.3.5 Wind speed . 30
4.3.6 Other parameters . 30
5 Ratings . 31
5.1 General . 31
5.2 Rated voltage of the equipment of the cable connection (U ) . 31
rm
5.3 Rated insulation level (U , U , U ) . 31
d p s
5.4 Rated frequency (f ) . 31
r
5.5 Rated continuous current (I ) . 31
r
5.6 Rated short-time withstand current (I ) . 32
k
5.7 Rated peak withstand current (I ) . 32
p
5.8 Rated duration of short circuit (t ) . 32
k
6 Design and construction . 32
6.1 Gas and vacuum tightness . 32
6.1.1 General . 32
6.1.2 Controlled pressure systems for gas . 32
6.1.3 Closed pressure systems for gas . 33
6.1.4 Sealed pressure systems . 33
6.101 Limits of supply . 33
6.101.1 General . 33
6.101.2 Over-voltage protection and earthing. 33
6.102 Filling pressure of insulating gas in the cable connection enclosure. 34
6.103 Pressure withstand requirements . 35
© IEC 2022
6.104 Mechanical forces on cable terminations . 35
6.105 Switchgear connection interface and cable termination connection interface . 35
7 Type tests . 36
7.1 General . 36
7.1.1 Basics . 36
7.1.2 Information for identification of test objects . 36
7.1.3 Information to be included in type-test reports . 36
7.2 Electrical type tests of cable terminations . 37
7.2.1 General . 37
7.2.2 Electrical type test of cable terminations in a single-phase enclosure . 37
7.2.3 Electrical type test of cable termination in a three-phase enclosure . 37
7.2.4 Additional electrical type tests on the insulator to be installed by switchgear
manufacturer (plug in cable termination). 37
7.1.101 Power-frequency voltage tests on the main circuit . 38
7.1.102 Partial discharge measurement . 38
7.3 Pressure test on the insulator of a cable termination . 40
7.4 Leak rate type test on the insulator of a cable termination . 40
8 Routine tests . 40
8.1 General . 40
8.2 Pressure test . 40
8.3 Visual inspection . 40
9 Standard dimensions . 40
9.1 General . 40
9.2 Fluid-filled cable terminations . 41
9.3 Dry-type cable terminations . 41
9.4 Three-phase cable connection enclosure . 41
10 Information to be given with enquiries, tenders and orders . 41
11 Rules for transport, storage, erection, service and maintenance . 41
11.1 General . 41
11.2 Conditions during transport, storage and installation . 42
11.3 Installation . 42
11.3.1 General .
...
IEC 62271-209 ®
Edition 2.0 2019-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables – Fluid-
filled and dry-type cable terminations
Appareillage à haute tension –
Partie 209: Raccordement de câbles pour appareillage sous enveloppe
métallique à isolation gazeuse de tension assignée supérieure à 52 kV – Câbles
remplis d’un fluide ou à isolation extrudée – Extrémité de câble de type sec ou
remplie d'un fluide
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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
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
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once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
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IEC 62271-209 ®
Edition 2.0 2019-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables – Fluid-
filled and dry-type cable terminations
Appareillage à haute tension –
Partie 209: Raccordement de câbles pour appareillage sous enveloppe
métallique à isolation gazeuse de tension assignée supérieure à 52 kV – Câbles
remplis d’un fluide ou à isolation extrudée – Extrémité de câble de type sec ou
remplie d'un fluide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-6405-8
– 2 – IEC 62271-209:2019 © IEC 2019
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Normal and special service conditions . 8
4.1 General . 8
4.2 Normal service conditions . 8
4.3 Special service conditions . 8
5 Ratings . 8
5.1 General . 8
5.2 Rated voltage of the equipment of the cable connection (U ) . 9
rm
5.3 Rated insulation level (U , U , U ) . 9
d p s
5.4 Rated frequency (f ) . 9
r
5.5 Rated continuous current (I ) . 9
r
5.6 Rated short-time withstand current (I ) . 9
k
5.7 Rated peak withstand current (I ) . 9
p
5.8 Rated duration of short circuit (t ) . 9
k
6 Design and construction . 10
6.1 Gas and vacuum tightness . 10
6.101 Limits of supply . 10
6.101.1 General . 10
6.101.2 Over-voltage protection and earthing . 10
6.102 Filling pressure of insulating gas in the cable connection enclosure . 11
6.103 Pressure withstand requirements . 11
6.104 Mechanical forces on cable terminations . 11
6.105 Switchgear connection interface and cable termination connection interface . 12
7 Type tests . 12
7.1 General . 12
7.2 Electrical type tests of cable terminations . 12
7.2.1 General . 12
7.2.2 Electrical type test of cable terminations in a single-phase enclosure . 12
7.2.3 Electrical type test of cable termination in a three-phase enclosure . 12
7.2.4 Additional electrical type tests on the insulator to be installed by
switchgear manufacturer (plug in cable termination) . 13
7.3 Pressure test on the insulator of a cable termination . 13
7.4 Leak rate type test on the insulator of a cable termination . 14
8 Routine tests . 14
8.1 General . 14
8.2 Pressure test . 14
8.3 Visual inspection . 14
9 Standard dimensions . 14
9.1 General . 14
9.2 Fluid-filled cable terminations . 14
9.3 Dry-type cable terminations . 15
9.4 Three-phase cable connection enclosure . 15
10 Information to be given with enquiries, tenders and orders . 15
11 Rules for transport, storage, erection, service and maintenance . 15
11.1 General . 15
11.2 Tests after cable system installation . 16
12 Safety practices and constraints during installation of cable connection to
switchgear . 16
13 Influence of the product on the environment . 16
Annex A (informative) Mechanical forces applied on the flange of the cable connection
enclosure . 21
A.1 General . 21
A.2 Recommendation when connecting cable systems to switchgear . 21
Bibliography . 23
Figure 1 – Operating pressure of the SF gas insulation in the cable connection
enclosure . 11
Figure 2 – Fluid-filled cable connection assembly – Typical arrangement . 17
Figure 3 – Fluid-filled cable connection – Assembly dimensions . 18
Figure 4 – Dry-type cable connection assembly – Typical arrangement . 19
Figure 5 – Dry-type cable connection assembly – Assembly dimensions . 20
Table 1 – Test voltages for additional electrical type tests according to 7.2.4 . 13
Table A.1 – Moment and forces applied on the flange of the cable connection
enclosure attached to the cable termination during normal operation . 22
– 4 – IEC 62271-209:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 209: Cable connections for gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV – Fluid-filled and extruded
insulation cables – Fluid-filled and dry-type cable terminations
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for
...
IEC 62271-209 ®
Edition 2.1 2022-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables –
Fluid‑filled and dry-type cable-terminations
Appareillage à haute tension –
Partie 209: Raccordement de câbles pour appareillage sous enveloppe
métallique à isolation gazeuse de tension assignée supérieure à 52 kV – Câbles
remplis d’un fluide ou à isolation extrudée – Extrémité de câble de type sec ou
remplie d'un fluide
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IEC 62271-209 ®
Edition 2.1 2022-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables –
Fluid‑filled and dry-type cable-terminations
Appareillage à haute tension –
Partie 209: Raccordement de câbles pour appareillage sous enveloppe
métallique à isolation gazeuse de tension assignée supérieure à 52 kV – Câbles
remplis d’un fluide ou à isolation extrudée – Extrémité de câble de type sec ou
remplie d'un fluide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.10 ISBN 978-2-8322-5290-1
IEC 62271-209 ®
Edition 2.1 2022-03
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
High-voltage switchgear and controlgear –
Part 209: Cable connections for gas-insulated metal-enclosed switchgear for
rated voltages above 52 kV – Fluid-filled and extruded insulation cables –
Fluid‑filled and dry-type cable-terminations
Appareillage à haute tension –
Partie 209: Raccordement de câbles pour appareillage sous enveloppe
métallique à isolation gazeuse de tension assignée supérieure à 52 kV – Câbles
remplis d’un fluide ou à isolation extrudée – Extrémité de câble de type sec ou
remplie d'un fluide
– 2 – IEC 62271-209:2019+AMD1:2022 CSV
© IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION TO Amendment 1 . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Normal and special service conditions . 9
4.1 General . 9
4.2 Normal service conditions . 9
4.3 Special service conditions . 9
5 Ratings . 9
5.1 General . 9
5.2 Rated voltage of the equipment of the cable connection (U ) . 10
rm
5.3 Rated insulation level (U , U , U ) . 10
d p s
5.4 Rated frequency (f ) . 10
r
5.5 Rated continuous current (I ) . 10
r
5.6 Rated short-time withstand current (I ) . 10
k
5.7 Rated peak withstand current (I ) . 10
p
5.8 Rated duration of short circuit (t ) . 10
k
6 Design and construction . 11
6.1 Gas and vacuum tightness . 11
6.101 Limits of supply . 11
6.101.1 General . 11
6.101.2 Over-voltage protection and earthing . 11
6.102 Filling pressure of insulating gas in the cable connection enclosure . 12
6.103 Pressure withstand requirements . 12
6.104 Mechanical forces on cable terminations . 13
6.105 Switchgear connection interface and cable termination connection interface . 13
7 Type tests . 13
7.1 General . 13
7.2 Electrical type tests of cable terminations . 13
7.2.1 General . 13
7.2.2 Electrical type test of cable terminations in a single-phase enclosure . 14
7.2.3 Electrical type test of cable termination in a three-phase enclosure . 14
7.2.4 Additional electrical type tests on the insulator to be installed by
switchgear manufacturer (plug in cable termination) . 14
7.3 Pressure test on the insulator of a cable termination . 15
7.4 Leak rate type test on the insulator of a cable termination . 15
8 Routine tests . 16
8.1 General . 16
8.2 Pressure test . 16
8.3 Visual inspection . 16
9 Standard dimensions . 16
9.1 General . 16
9.2 Fluid-filled cable terminations . 16
9.3 Dry-type cable terminations . 16
© IEC 2022
9.4 Three-phase cable connection enclosure . 17
10 Information to be given with enquiries, tenders and orders . 17
11 Rules for transport, storage, erection, service and maintenance . 17
11.1 General . 17
11.2 Tests after cable system installation . 17
12 Safety practices and constraints during installation of cable connection to
switchgear . 18
13 Influence of the product on the environment . 18
Annex A (informative) Mechanical forces applied on the flange of the cable connection
enclosure . 24
A.1 General . 24
A.2 Recommendation when connecting cable systems to switchgear . 24
Bibliography . 26
Figure 1 – Operating pressure of the SF gas insulation in the cable connection
enclosure . 12
Figure 2 – Fluid-filled cable connection assembly – Typical arrangement . 20
Figure 3 – Fluid-filled cable connection – Assembly dimensions . 21
Figure 4 – Dry-type cable connection assembly – Typical arrangement .
...
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