EN IEC/IEEE 62582-6:2021

SLOVENSKI STANDARD
01-september-2021
Jedrske elektrarne - Merilna in nadzorna oprema za zagotavljanje varnosti -
Metode za spremljanje stanja električne opreme - 6. del: Izolacijska upornost
(IEC/IEEE 62582-6:2019)
Nuclear power plants - Instrumentation and control important to safety - Electrical
equipment condition monitoring methods - Part 6: Insulation resistance (IEC/IEEE 62582
-6:2019)
Kernkraftwerke - Leittechnik mit sicherheitstechnischer Bedeutung -
Zustandsüberwachung elektrischer Geräte - Teil 6: Isolationswiderstand (IEC/IEEE
62582-6:2019)
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 (IEC/IEEE 62582-6:2019)
Ta slovenski standard je istoveten z: EN IEC/IEEE 62582-6:2021
ICS:
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC/IEEE 62582-6

NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2021
ICS 27.120.20
English Version
Nuclear power plants - Instrumentation and control important to
safety - Electrical equipment condition monitoring methods - Part
6: Insulation resistance
(IEC/IEEE 62582-6:2019)
Centrales nucléaires de puissance - Instrumentation et Kernkraftwerke - Leittechnik mit sicherheitstechnischer
contrôle-commande importants pour la sûreté - Méthodes Bedeutung - Zustandsüberwachung elektrischer Geräte -
de surveillance de l'état des matériels électriques - Partie 6: Teil 6: Isolationswiderstand
Résistance d'isolement (IEC/IEEE 62582-6:2019)
(IEC/IEEE 62582-6:2019)
This European Standard was approved by CENELEC on 2021-07-05. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC/IEEE 62582-6:2021 E

European foreword
This document (EN IEC/IEEE 62582-6:2021) consists of the text of IEC/IEEE 62582-6:2019 prepared
by IEC/TC 45 "Nuclear instrumentation".
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-07-05
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-07-05
document have to be withdrawn
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.
As stated in the nuclear safety directive 2009/71/EURATOM, Chapter 1, Article 2, item 2, Member
States are not prevented from taking more stringent safety measures in the subject-matter covered by
the Directive, in compliance with Community law.
In a similar manner, this European standard does not prevent Member States from taking more
stringent nuclear safety and/or security measures in the subject-matter covered by this standard.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN and CENELEC
websites.
Endorsement notice
The text of the International Standard IEC/IEEE 62582-6:2019 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 62631-3-3 NOTE Harmonized as EN 62631-3-3
IEC/IEEE 60780-323 NOTE Harmonized as EN 60780-323

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
JCGM 100 2008 Evaluation of measurement data - Guide to - -
the expression of uncertainty in
measurement
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

IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 3 –
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
...