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)

This part of IEC 62271 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.
The purpose of this document is to establish electrical and mechanical interchangeability
between cable terminations and the gas-insulated metal-enclosed switchgear and to
determine the limits of supply. It complements and amends, if applicable, the relevant IEC
standards. For the purpose of this document the term "switchgear" is used for "gas-insulated
metal enclosed switchgear".
It does not cover directly immersed cable terminations, as described in CIGRE
brochure 89 [4] 1.

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 209: Kabelanschlüsse für gasisolierte metallgekapselte Schaltanlagen für Bemessungsspannungen über 52 kV - Kabel mit fluidgefüllter und extrudierter Isolierung - Fluidgefüllte und feststoffisolierte Kabelendverschlüsse (IEC 62271-209:2019)

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 sèche ou remplie d'un fluide (IEC 62271-209:2019)

IEC 62271-209:2019 est disponible sous forme de IEC 62271-209:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.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.

Visokonapetostne stikalne in krmilne naprave - 209. del: Kabelski spoji za plinsko izolirane stikalne naprave v kovinskih ohišjih za naznačene napetosti nad 52 kV - Kabli v tekočini in z ekstrudirano izolacijo - Mokri in suhi kabelski priključki (IEC 62271-209:2019)

Ta del standarda 62271 zajema povezovalni sestav kablov, napolnjenih s tekočino, in ekstrudiranih kablov do plinsko izoliranih stikalnih naprav v kovinskih ohišjih (GIS), v eno- ali trifaznih sistemih, pri čemer so kabelski priključki napolnjeni s tekočino ali suhega tipa in pri čemer obstaja ločevalna izolacijska pregrada med izolacijo kabla in plinsko izolacijo stikalne naprave.
Namen tega dokumenta je vzpostavitev električne in mehanske zamenljivosti med kabelskimi priključki ter plinsko izoliranimi stikalnimi napravami v kovinskih ohišjih in za določanje omejitev napajanja. Dokument po potrebi dopolnjuje in spreminja ustrezne standarde IEC. Za namene tega dokumenta se za »plinsko izolirane stikalne naprave v kovinskih ohišjih« uporablja izraz »stikalne naprave«.
Ne zajema neposredno potopljenih kabelskih priključkov, kot so opisani v brošuri CIGRE 89 [4] 1.

General Information

Status
Published
Publication Date
08-May-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Apr-2019
Due Date
22-Jun-2019
Completion Date
09-May-2019

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SLOVENSKI STANDARD
SIST EN IEC 62271-209:2019
01-junij-2019
Nadomešča:
SIST EN 62271-209:2008

Visokonapetostne stikalne in krmilne naprave - 209. del: Kabelski spoji za plinsko

izolirane stikalne naprave v kovinskih ohišjih za naznačene napetosti nad 52 kV -

Kabli v tekočini in z ekstrudirano izolacijo - Mokri in suhi kabelski priključki (IEC

62271-209:2019)

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)

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 209: Kabelanschlüsse für

gasisolierte metallgekapselte Schaltanlagen für Bemessungsspannungen über 52 kV -

Kabel mit fluidgefüllter und extrudierter Isolierung - Fluidgefüllte und feststoffisolierte

Kabelendverschlüsse (IEC 62271-209:2019)

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 sèche ou remplie

d'un fluide (IEC 62271-209:2019)
Ta slovenski standard je istoveten z: EN IEC 62271-209:2019
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN IEC 62271-209:2019 en

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

---------------------- Page: 1 ----------------------
SIST EN IEC 62271-209:2019
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SIST EN IEC 62271-209:2019
EUROPEAN STANDARD EN IEC 62271-209
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2019
ICS 29.130.10 Supersedes EN 62271-209:2007
English Version
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)

Appareillage à haute tension - Partie 209: Raccordement de Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil

câbles pour appareillage sous enveloppe métallique à 209: Kabelanschlüsse für gasisolierte metallgekapselte

isolation gazeuse de tension assignée supérieure à 52 kV - Schaltanlagen für Bemessungsspannungen über 52 kV -

Câbles remplis d'un fluide ou à isolation extrudée - Kabel mit fluidgefüllter und extrudierter Isolierung -

Extrémité de câble de type sec ou remplie d'un fluide Fluidgefüllte und feststoffisolierte Kabelendverschlüsse

(IEC 62271-209:2019) (IEC 62271-209:2019)

This European Standard was approved by CENELEC on 2019-03-15. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

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

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 62271-209:2019 E
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SIST EN IEC 62271-209:2019
EN IEC 62271-209:2019 (E)
European foreword

The text of document 17C/696/FDIS, future edition 2 of IEC 62271-209, prepared by SC 17C

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

CENELEC parallel vote and approved by CENELEC as EN IEC 62271-209:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2019-12-15

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-03-15

document have to be withdrawn
This document supersedes EN 62271-209:2007.

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

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

Endorsement notice

The text of the International Standard IEC 62271-209:2019 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60137:2017 NOTE Harmonized as EN 60137:2017 (not modified)
IEC 62271-207 NOTE Harmonized as EN 62271-207
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SIST EN IEC 62271-209:2019
EN IEC 62271-209:2019 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

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

EN/HD applies.

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

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60038 - IEC standard voltages EN 60038 -
IEC 60068-2-17 1994 Basic environmental testing procedures - EN 60068-2-17 1994
Part 2-17: Tests - Test Q: Sealing
IEC 60141 series Tests on oil-filled and gas-pressure cables - -
and their accessories
IEC 60376 - Specification of technical grade sulphur EN IEC 60376 -
hexafluoride (SF6) and
complementarygases to be used in its
mixtures for use in electrical equipment
IEC 60480 - Guidelines for the checking and treatment EN 60480 -
of sulfur hexafluoride (SF6) taken from
electrical equipment and specification for
its re-use
IEC 60840 - Power cables with extruded insulation and - -
their accessories for rated voltages above
30 kV (U = 36 kV) up to 150 kV (U = 170
m m
kV) – Test methods and requirements
IEC 62067 - Power cables with extruded insulation and - -
their accessories for rated voltages above
150 kV (U = 170 kV) up to 500 kV (U =
m m
550 kV) - Test methods and requirements
IEC 62271-1 2017 High-voltage switchgear and controlgear - EN 62271-1 2017
Part 1: Common specifications for
alternating current switchgear and
controlgear
IEC 62271-203 2011 High-voltage switchgear and controlgear - EN 62271-203 2012
Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV
---------------------- Page: 5 ----------------------
SIST EN IEC 62271-209:2019
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SIST EN IEC 62271-209:2019
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

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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 62271-209:2019
– 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

5.3 Rated insulation level (U , U , U ) .......................................................................... 9

d p s

5.4 Rated frequency (f ) ................................................................................................ 9

5.5 Rated continuous current (I ) .................................................................................. 9

5.6 Rated short-time withstand current (I ) ................................................................... 9

5.7 Rated peak withstand current (I ) ........................................................................... 9

5.8 Rated duration of short circuit (t ) ........................................................................... 9

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

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SIST EN IEC 62271-209:2019
IEC 62271-209:2019 © IEC 2019 – 3 –

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

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SIST EN IEC 62271-209:2019
– 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 standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

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

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

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

International Standard IEC 62271-209 has been prepared by subcommittee 17C: Assemblies,

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

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;
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SIST EN IEC 62271-209:2019
IEC 62271-209:2019 © IEC 2019 – 5 –

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.
The text of this standard is based on the following documents:
FDIS Report on voting
17C/696/FDIS 17C/701/RVD

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

the report on voting indicated in the above table.

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

This standard is to be read in conjunction with IEC 62271-1:2017, to which it refers and which

is applicable unless otherwise specified in this standard. In order to simplify the indication of

corresponding requirements, the same numbering of clauses and subclauses is used as in

IEC 62271-1. Amendments to these clauses and subclauses are given under the same
references whilst additional subclauses are numbered from 101.

A list of all parts in the IEC 62271 series, published under the general title High-voltage

switchgear and controlgear, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

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

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN IEC 62271-209:2019
– 6 – IEC 62271-209:2019 © IEC 2019
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
1 Scope

This part of IEC 62271 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.

The purpose of this document is to establish electrical and mechanical interchangeability

between cable terminations and the gas-insulated metal-enclosed switchgear and to

determine the limits of supply. It complements and amends, if applicable, the relevant IEC

standards. For the purpose of this document the term "switchgear" is used for "gas-insulated

metal enclosed switchgear".
It does not cover directly immersed cable terminations, as described in CIGRE
brochure 89 [4] .
2 Normative references

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

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
IEC 60038, IEC standard voltages

IEC 60068-2-17:1994, Basic environmental testing procedures – Part 2-17:Tests – Test Q:

Sealing

IEC 60141 (all parts), Tests on oil-filled and gas-pressure cables and their accessories

IEC 60376, Specification of technical grade sulphur hexafluoride (SF ) and complementary

gases to be used in its mixtures for use in electrical equipment

IEC 60480, Guidelines for the checking and treatment of sulphur hexafluoride (SF ) taken

from electrical equipment and specification for its re-use

IEC 60840, Power cables with extruded insulation and their accessories for rated voltages

above 30 kV (U = 36 kV) up to 150 kV (U = 170 kV) – Test methods and requirements

m m

IEC 62067, Power cables with extruded insulation and their accessories for rated voltages

above 150 kV (U = 170 kV) up to 500 kV (U = 550 kV) – Test methods and requirements

m m
_____________
Numbers in square brackets refer to the Bibliography.
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SIST EN IEC 62271-209:2019
IEC 62271-209:2019 © IEC 2019 – 7 –

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

for alternating current switchgear and controlgear

IEC 62271-203:2011, High-voltage switchgear and controlgear – Part 203:Gas-insulated

metal-enclosed switchgear for rated voltages above 52 kV
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
cable termination

equipment fitted to the end of a cable to ensure electrical connection with other parts of the

system and to maintain the insulation up to the point of connection
3.1.1
fluid-filled cable termination

cable termination which comprises a separating insulating barrier between the cable

insulation and the gas insulation of switchgear, including a fluid
3.1.2
dry-type cable termination

cable termination which comprises an elastomeric electrical stress control component in direct

contact with a separating insulating barrier (insulator) between the cable insulation and the

gas insulation of the switchgear, not requiring any fluid
3.2
main circuit end terminal

part of the main circuit of a gas-insulated metal enclosed switchgear forming part of the

connection interface
3.3
cable connection enclosure

part of the gas-insulated metal-enclosed switchgear which houses the cable termination and

the main circuit end terminal
3.4
cable connection assembly

combination of a cable termination, a cable connection enclosure and a main circuit end

terminal, which mechanically and electrically connects the cable to the gas-insulated metal

enclosed switchgear
3.5
plug-in cable termination

cable termination where cable/stress cone assembly can be engaged into the insulator

assembly that is already installed into switchgear enclosure
3.6
design pressure

pressure used to determine the design of the enclosure and the components of the cable

termination subjected to that pressure
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SIST EN IEC 62271-209:2019
– 8 – IEC 62271-209:2019 © IEC 2019

Note 1 to entry: It is at least equal to the maximum pressure in the enclosure at the highest temperature that the

gas used for insulation can reach under specified maximum service conditions.
3.7
fluid
liquid or gas for insulation purposes
3.8
cable system
cable with installed accessories
3.9
filling pressure p for insulation
filling density ρ for insulation

pressure (in Pa), for insulation, referred to the standard atmospheric air conditions of 20 °C

and 101,3 kPa, which may be expressed in relative or absolute terms (or density), to which

the assembly is filled before being put into service
3.10
minimum functional pressure p for insulation
for insulation
minimum functional density ρ

pressure (in Pa), for insulation, referred to the standard atmospheric air conditions of 20 °C

and 101,3 kPa, which may be expressed in relative or absolute terms (or density), at which

and above which the characteristics of the switchgear-cable connection are maintained and at

which replenishment becomes necessary
4 Normal and special service conditions
4.1 General
Clause 2 of IEC 62271-203:2011 is applicable.
4.2 Normal service conditions
Subclause 2.1 of IEC 62271-203:2011 is applicable.
4.3 Special service conditions
Subclause 2.2 of IEC 62271-203:2011 is applicable.
5 Ratings
5.1 General

When dimensioning the cable connection assembly, the following rated values shall apply:

a) rated voltage of the equipment of the cable connection (U );
b) rated insulation level (U , U and U where applicable);
p d s
c) rated frequency (f )
d) rated continuous current (I );
e) rated short-time withstand current (I );
f) rated peak withstand current (I );
g) rated duration of short circuit (t ).
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SIST EN IEC 62271-209:2019
IEC 62271-209:2019 © IEC 2019 – 9 –
5.2 Rated voltage of the equipment of the cable connection (U )
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