IEC 62271-112:2013

IEC 62271-112 ®
Edition 1.0 2013-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 112: Alternating current high-speed earthing switches for secondary arc
extinction on transmission lines

Appareillage à haute tension –
Partie 112: Sectionneurs de terre rapides à courant alternatif pour l’extinction de
l’arc secondaire sur les lignes de transport

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IEC 62271-112 ®
Edition 1.0 2013-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –

Part 112: Alternating current high-speed earthing switches for secondary arc

extinction on transmission lines

Appareillage à haute tension –

Partie 112: Sectionneurs de terre rapides à courant alternatif pour l’extinction de

l’arc secondaire sur les lignes de transport

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-1009-3

– 2 – 62271-112 © IEC:2013
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Normal and special service conditions . 6
3 Terms and definitions . 6
3.1 General terms . 6
3.2 Assemblies of switchgear and controlgear . 8
3.3 Parts of assemblies . 8
3.4 Switching devices . 8
3.5 Parts of switchgear and controlgear . 8
3.6 Operation . 8
3.7 Characteristics quantities . 8
4 Ratings . 8
5 Design and construction . 10
6 Type tests . 11
7 Routine tests . 14
8 Guide to the selection of HSES . 14
9 Information to be given with enquiries, tenders and orders . 14
10 Rules for transport, storage, installation, operation and maintenance . 15
11 Safety . 15
Annex A (informative) Background information on the use of HSES . 16
Annex B (informative) Induced current and voltage conditions for other cases . 21

Figure 1 – Explanation of a multi-phase auto-reclosing scheme . 7
Figure 2 – Timing chart of HSES and circuit-breakers . 9
Figure A.1 – Single-line diagram of a power system . 17
Figure A.2 – Timing chart of the HSESs in relation to the transmission line circuit-
breakers . 17
Figure A.3 – Typical timing chart showing the time between fault initiation and a
successful re-close of the transmission line circuit-breakers . 18
Figure B.1 – System condition to explain successive fault . 22
Figure B.2 – Example of waveforms of delayed current zero phenomena . 22
Figure B.3 – Typical test circuit for electromagnetic coupling test-duty of a HSES with
delayed current zero crossings . 24
Figure B.4 – Typical test circuit for electrostatic coupling test-duty of HSES with
delayed current zero crossings . 24

Table 1 – Standardized values of rated induced currents and voltages . 10
Table 2 – Items to be listed on nameplate of a HSES . 11
Table A.1 – Comparison of earthing switches . 19
Table A.2 – Comparison of a four-legged reactor and HSES . 20
Table B.1 – Preferred values for single-phase earth fault with delayed current zero
phenomena in the presence of a successive fault . 23

62271-112 © IEC:2013 – 3 –
Table B.2 – Preferred values for multi-phase earth faults in a double-circuit system . 25
Table B.3 – Preferred values for covering the cases of categories 0 and 1 . 25

– 4 – 62271-112 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 112: Alternating current high-speed earthing switches
for secondary arc extinction on transmission lines

FOREWORD
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International Standard IEC 62271-112 has been prepared by subcommittee 17A: High-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
The text of this standard is based o
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