|
IEC/IEEE 62582-6
Edition 1.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants ‒ Instrumentation and control important to safety ‒
Electrical equipment condition monitoring methods –
Part 6: Insulation resistance
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Méthodes de surveillance de l'état des matériels
électriques –
Partie 6: Résistance d'isolement
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing being
secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEC’s
member National Committee in the country of the requester or from IEEE.
IEC Central Office Institute of Electrical and Electronics Engineers, Inc.
3, rue de Varembé 3 Park Avenue
CH-1211 Geneva 20 New York, NY 10016-5997
Switzerland United States of America
Tel.: +41 22 919 02 11 [email protected]
[email protected] www.ieee.org
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 the IEEE
IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for
the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications,
conferences, technology standards, and professional and educational activities.
About IEC/IEEE publications
The technical content of IEC/IEEE publications is kept under constant review by the IEC and IEEE. 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and withdrawn publications.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.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
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
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
.
IEC/IEEE 62582-6
Edition 1.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants ‒ Instrumentation and control important to safety ‒
Electrical equipment condition monitoring methods –
Part 6: Insulation resistance
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Méthodes de surveillance de l'état des matériels
électriques –
Partie 6: Résistance d'isolement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-7050-9
– 2 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Abbreviated terms and acronyms . 9
5 General description . 10
6 Applicability and reproducibility . 12
7 Instrumentation . 12
7.1 Measurement voltage level . 12
7.2 Uncertainty . 12
7.3 Calibration . 13
8 IR measurement procedure . 13
8.1 General . 13
8.2 Requirements on tracking of changes of IR during the simulated accident
conditions . 13
8.3 Test specimen . 13
8.4 Interference . 13
8.5 Conditioning . 13
8.6 IR measurement during the dynamic phase of the simulated accident
conditions . 14
8.6.1 Set-up for the measurement . 14
8.6.2 Connection of IR voltage and start of measurement . 14
8.6.3 Default voltage . 14
8.6.4 Determination of IR value with the specimen not energized during the
accident simulation . 14
8.6.5 Determination of the IR value with the specimen energized during the
accident simulation . 15
9 Measurement report . 16
Annex A (informative) Example of equivalent diagram for a cable and the measuring
device using DC . 17
Annex B (informative) Measurement of leakage current using AC voltage . 18
Annex C (informative) Dependence of IR on temperature only and combined with
steam . 19
Annex D (informative) Examples of results of measurement of IR on aged cables
during simulated accident conditions. 20
Annex E (informative) Example of a measurement loop and calculation of the time
available for stabilization for more than one conductor or group of conductors
measured with the same measurement instrument . 23
E.1 Example of one measurement loop . 23
E.2 Total time for each measurement of all combinations during the dynamic
phase of the simulated accident conditions . 23
Bibliography . 24
Figure 1 – Time to stabilization of IR measured before LOCA, after 10 min in LOCA
and after 60 min in LOCA . 11
Figure A.1 – Set-up for measurement of IR using a DC voltage source (guard is not
needed if the ground plane is close to the insulator) . 17
Figure B.1 – Set-up for measurement of IR using an AC voltage source . 18
Figure C.1 – Temperature influence on IR of an insulation between 20 °C and 150 °C . 19
Figure D.1 – Example of result of measurement of IR between conductors and
ground/shielding during a LOCA test . 20
Figure D.2 – Example of measurement of IR between conductor and ground and
between conductors . 21
Figure D.3 – Example of measurement of IR on a three-conductor cable during LOCA
simulation . 22
Figure E.1 – Example of one measurement loop . 23
– 4 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
NUCLEAR POWER PLANTS ‒
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY ‒
ELECTRICAL EQUIPMENT CONDITION MONITORING METHODS –
Part 6: Insulation resistance
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.
IEEE Standards documents are developed within IEEE Societies and Standards Coordinating Committees of the
IEEE Standards Association (IEEE-SA) Standards Board. IEEE develops its standards through a consensus
development process, which brings together volunteers representing varied viewpoints and interests to achieve
the final product. Volunteers are not necessarily members of IEEE and serve without compensation. While IEEE
administers the process and establishes rules to promote fairness in the consensus development process, IEEE
does not independently evaluate, test, or verify the accuracy of any of the information contained in its standards.
Use of IEEE Standards documents is wholly voluntary. IEEE documents are made available for use subject to
important notices and legal disclaimers (see http://standards.ieee.org/IPR/disclaimers.html for more
information).
IEC collaborates closely with IEEE in accordance with conditions determined by agreement between the two
organizations.
2) The formal decisions 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. The formal decisions of IEEE on technical matters, once consensus within IEEE Societies
and Standards Coordinating Committees has been reached, is determined by a balanced ballot of materially
interested parties who indicate interest in reviewing the proposed standard. Final approval of the IEEE
standards document is given by the IEEE Standards Association (IEEE-SA) Standards Board.
3) IEC/IEEE Publications have the form of recommendations for international use and are accepted by IEC
National Committees/IEEE Societies in that sense. While all reasonable efforts are made to ensure that the
technical content of IEC/IEEE Publications is accurate, IEC or IEEE 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
(including IEC/IEEE Publications) transparently to the maximum extent possible in their national and regional
publications. Any divergence between any IEC/IEEE Publication and the corresponding national or regional
publication shall be clearly indicated in the latter.
5) IEC and IEEE do not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC and IEEE are 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 IEEE or their directors, employees, serva
...