IEC TS 62271-319:2024
(Main)High-voltage switchgear and controlgear – Part 319: Alternating current circuit-breakers intended for controlled switching
High-voltage switchgear and controlgear – Part 319: Alternating current circuit-breakers intended for controlled switching
IEC TS 62271-319:2024 is applicable to alternating current circuit-breakers with intentional non-simultaneous pole operation designed for indoor or outdoor installations and for operation at frequencies of 50 Hz and 60 Hz on systems having voltages above 1 000 V. This document provides additional ratings and type tests to be conducted for this type of circuit-breaker and is intended to be used in conjunction with IEC 62271‑100:2021. Intentional non-simultaneous pole operation can be implemented by mechanical or electrical means and both methods are within the scope of this document.
General Information
Standards Content (Sample)
IEC TS 62271-319 ®
Edition 1.0 2024-09
TECHNICAL
SPECIFICATION
High-voltage switchgear and controlgear –
Part 319: Alternating current circuit-breakers intended for controlled switching
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.
IEC Secretariat Tel.: +41 22 919 02 11
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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.
IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.
Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need
further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TS 62271-319 ®
Edition 1.0 2024-09
TECHNICAL
SPECIFICATION
High-voltage switchgear and controlgear –
Part 319: Alternating current circuit-breakers intended for controlled switching
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-9580-9
– 2 – IEC TS 62271-319:2024 © IEC 2024
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 11
3.1 General terms and definitions . 11
3.2 Assemblies of switchgear and controlgear . 11
3.3 Parts of assemblies . 11
3.4 Switching devices . 11
3.5 Parts of switchgear and controlgear . 11
3.6 Operational characteristics of switchgear and controlgear . 11
3.7 Characteristic quantities . 12
4 Normal and special service conditions . 17
5 Ratings . 17
5.1 General . 17
5.2 Rated short-circuit making current (I ) for intentional non-simultaneous
mc
closing . 17
6 Design and construction . 19
6.1 General . 19
6.2 Mechanical scatter . 19
6.3 RDDS . 19
6.4 Auxiliary and control equipment and circuits . 19
6.5 Uncontrolled operations . 19
6.6 Nameplates. 19
6.7 Simultaneity of poles during closing and opening operations . 19
6.7.1 Single-pole operated circuit-breakers intended for controlled switching . 19
6.7.2 Mechanically staggered circuit-breakers intended for controlled
switching . 19
6.7.3 Non-simultaneity between individual making and breaking units (MBUs)
of a pole . 20
7 Type tests . 20
7.1 General . 20
7.2 Miscellaneous provisions for making and breaking tests . 21
7.2.1 General . 21
7.2.2 Identical nature of the MBUs . 21
7.2.3 Test duty T100a . 21
7.2.4 Short-circuit making current . 24
7.3 Capacitive current making and breaking tests . 24
7.3.1 General . 24
7.3.2 Test voltage to verify controlled opening in non-effectively earthed
neutral systems . 24
7.3.3 Test-duty to verify controlled opening in non-effectively earthed neutral
systems . 25
7.3.4 Test-duty to verify controlled switching of back-to-back capacitor banks . 25
7.4 Determination of the chopping characteristics and RRDS for inductive load
switching . 25
7.5 Controlled closing test . 26
7.5.1 Applicability . 26
7.5.2 General requirements . 26
7.5.3 Specified target point for closing defined by the manufacturer . 27
7.5.4 Characteristics of the power frequency supply circuit . 27
7.5.5 Test procedure – general requirements . 27
8 Routine tests . 28
8.1 General . 28
9 Guide to the selection of switchgear and controlgear for service (informative) . 28
9.1 General . 28
9.2 Voltage factors based on system configuration . 28
9.3 Mechanical and electrical characteristics of the circuit-breaker . 29
9.3.1 Reference mechanical travel characteristics . 29
9.3.2 Mechanical characteristics of the circuit-breaker as a function of
environmental and operating conditions . 29
9.4 Effect of RDDS and mechanical scatter on target determination . 29
10 Information to be given with enquiries, tenders and orders (informative) . 29
10.1 General . 29
11 Transport, storage, installation, operation instructions and maintenance. 30
11.1 General . 30
11.2 Commissioning of circuit-breakers for controlled switching . 30
11.3 Maintaining controlled switching accuracy . 30
12 Safety . 30
13 Influence of the product on the environment . 30
Annex A (informative) Parameter definition summary test report . 31
A.1 General . 31
A.2 Information to be included in the parameter definition summary test report . 31
A.2.1 General information . 31
A.2.2 Parameter definition tests . 31
Annex B (informative) Determination of mechanical scatter . 34
B.1 Applicability . 34
B.2 Test procedure . 34
B.3 Test results . 35
Annex C (informative) Determination of the rate of decrease of dielectric strength
(RDDS) . 36
C.1 Applicability . 36
C.2 General . 36
C.3 Test procedure . 37
C.3.1 Preferred test procedure . 37
C.3.2 Alternative test procedure . 37
C.4 Test results . 37
Annex D (informative) Impact of control voltage . 38
D.1 Applicability . 38
D.2 General . 38
D.3 Test procedure . 38
D.4 Test results . 38
Annex E (informative) Impact of low temperature . 39
E.1 Applicability . 39
E.2 General . 39
– 4 – IEC TS 62271-319:2024 © IEC 2024
E.3 Test procedure . 39
E.4 Test results . 39
Annex F (informative) Impact of high temperature .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.