IEC 62271-110:2012

High-voltage switchgear and controlgear - Part 110: Inductive load switching

IEC 62271-110:2012 is applicable to a.c. circuit-breakers designed for indoor or outdoor installation, for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V and applied for inductive current switching with or without additional short-circuit current breaking duties. The standard is applicable to circuit-breakers in accordance with IEC 62271-100 that are used to switch high-voltage motor currents and shunt reactor currents and also to high-voltage contactors used to switch high-voltage motor currents as covered by IEC 62271-106. For circuit-breakers applied to switch shunt reactor currents at rated voltages according to IEC 62271-1:2007 Tables 2a and 2b, combined voltage tests across the isolating distance are not required (refer to 4.2). This third edition cancels and replaces the second edition published in 2009 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- former Table 2 has been split into three new tables to conform with IEC 62271-100 and to address actual in service circuit configurations.
- the criteria for successful testing has been revised to a more explicit statement (see 6.114.11a).
- comments received in response to 17A/959/CDV and 17A/981/RVC have been addressed.
The contents of the corrigendum of October 2012 have been included in this copy.
This publication is to be read in conjunction with IEC 62271-1:2007.

Appareillage à haute tension - Partie 110: Manoeuvre de charges inductives

La CEI 62271-110:2012 est applicable aux disjoncteurs à courant alternatif conçus pour une installation à l'intérieur ou à l'extérieur, et pour fonctionner à des fréquences de 50 Hz à 60 Hz, sur des réseaux de tensions supérieures à 1 000 V, et prévus pour l'établissement et la coupure de courants inductifs avec ou sans pouvoir de coupure de court-circuit additionnel. Cette norme est applicable aux disjoncteurs selon la CEI 62271-100, qui sont utilisés pour l'établissement et la coupure de courants de moteurs à haute tension et de courants de bobines d'inductance shunt, et aussi aux contacteurs à haute tension utilisés pour l'établissement et la coupure de courants de moteurs à haute tension, tels que couverts par la CEI 62271-106. Pour les disjoncteurs appliqués en vue de la coupure des courants de bobines d'inductance shunt à des tensions assignées conformément aux Tableaux 2a et 2b de la CEI 62271-1:2007, les essais de tensions combinées à travers la distance de sectionnement ne sont pas exigés (se reporter à 4.2). Cette troisième édition annule et remplace la deuxième édition parue en 2009, et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- l'ancien Tableau 2 a été divisé en trois nouveaux tableaux, afin d'être conforme à la CEI 62271-100, et pour traiter des configurations réelles de circuits en service;
- les critères pour que les essais soient satisfaisants ont été révisés, afin d'être plus explicites (voir 6.114.11a);
- les commentaires reçus en réponse aux documents 17A/959/CDV et 17A/981/RVC ont été traités.
Le contenu du corrigendum d'octobre 2012 a été pris en considération dans cet exemplaire.
Cette publication doit être lue conjointement avec la CEI 62271-1:2007.

General Information

• Status: Published
• Publication Date: 26-Sep-2012
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: SC 17A - Switching devices
• Drafting Committee: MT 32 - TC 17/SC 17A/MT 32
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 05-Oct-2017

Relations

• Corrected By: IEC 62271-110:2012/COR1:2012 - Corrigendum 1 - High-voltage switchgear and controlgear - Part 110: Inductive load switching
• Effective Date: 05-Sep-2023
• Revised: IEC 62271-110:2017 - High-voltage switchgear and controlgear - Part 110: Inductive load switching
• Effective Date: 05-Sep-2023
• Revises: IEC 62271-110:2009 - High-voltage switchgear and controlgear - Part 110: Inductive load switching
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62271-110 ®
Edition 3.0 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –
Part 110: Inductive load switching

Appareillage à haute tension –
Partie 110: Manœuvre de charges inductives

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IEC 62271-110 ®
Edition 3.0 2012-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –

Part 110: Inductive load switching

Appareillage à haute tension –

Partie 110: Manœuvre de charges inductives

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 29.130.10 ISBN 978-2-83220-410-8

– 2 – 62271-110 © IEC:2012
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
Normal and special service conditions . 6
3 Terms and definitions . 7
4 Ratings . 8
5 Design and construction . 8
6 Type tests . 8
6.1 General . 8
6.2 Dielectric tests . 9
6.3 Radio interference voltage (r.i.v.) test . 9
6.4 Measurement of the resistance of circuits . 9
6.5 Temperature-rise tests . 9
6.6 Short-time withstand current and peak withstand current tests . 9
6.7 Verification of protection . 9
6.8 Tightness tests . 9
6.9 Electromagnetic compatibility tests (EMC) . 9
Mechanical and environmental tests . 9
6.101
6.102 Miscellaneous provisions for making and breaking tests . 9
6.103 Test circuits for short-circuit making and breaking tests . 10
6.104 Short-circuit test quantities . 10
6.105 Short-circuit test procedure . 10
6.106 Basic short-circuit test-duties . 10
6.107 Critical current tests. 10
6.108 Single-phase and double-earth fault tests . 10
6.113 High-voltage motor current switching tests . 10
6.114 Shunt reactor current switching tests . 16
7 Routine tests . 27
8 Guide to selection of switchgear and controlgear . 27
9 Information to be given with enquiries, tenders and orders . 27
10 Transport, storage, installation, operation and maintenance . 27
11 Safety . 27
12 Influence of the product on the environment . 27
Annex A (normative) Calculation of t values . 29
Bibliography . 31

Figure 1 – Motor switching test circuit and summary of parameters . 12
Figure 2 – Illustration of voltage transients at interruption of inductive current for first
phase clearing in a three-phase non-effectively earthed circuit . 16
Figure 3 – Reactor switching test circuit − Three-phase test circuit for in-service load
circuit configurations 1 and 2 (Table 2) . 18
Figure 4 – Reactor switching test circuit − Single-phase test circuit for in-service load
circuit configurations 1, 2 and 4 (Table 2) . 19

62271-110 © IEC:2012 – 3 –
Figure 5 – Reactor switching test circuit − Three-phase test circuit for in-service load
circuit configuration 3 (Table 2) . 20
Figure 6 – Illustration of voltage transients at interruption of inductive current for a
single-phase test . 28

Table 1 – Test duties at motor current switching tests . 14
Table 2 – In-service load circuit configurations . 17
Table 3 – Standard values of prospective transient recovery voltages – Rated voltages
12 kV to 170 kV for effectively and non-effectively earthed systems – Switching shunt
reactors with isolated neutrals (Table 2: In-service load circuit configuration 1) . 21
Table 4 – Standard values of prospective transient recovery voltages – Rated voltages
100 kV to 1 200 kV for effectively earthed systems – Switching shunt reactors with

earthed neutrals (Table 2: In-service load circuit configuration 2). 22
Table 5 – Standard values of prospective transient recovery voltages – Rated voltages
12 kV to 52 kV for effectively and non-effectively earthed systems – Switching shunt
reactors with isolated neutrals (Table 2: In-service load circuit configuration 3) . 23
Table 6 – Standard values of prospective transient recovery voltages – Rated voltages
12 kV to 52 kV for effectively and non-effectively earthed systems – Switching shunt
reactors with earthed neutrals (Table 2: In-service load circuit configuration 4) . 23
Table 7 – Load circuit 1 test currents . 24
Table 8 – Load circuit 2 test currents . 24
Table 9 – Test duties for reactor current switching tests . 25

– 4 – 62271-110 © IEC:2012
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 110: Inductive load switching

FOREWORD
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