SIST EN IEC/IEEE 62582-6:2021

SLOVENSKI STANDARD
SIST EN IEC/IEEE 62582-6:2021
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
SIST EN IEC/IEEE 62582-6:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC/IEEE 62582-6:2021

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SIST EN IEC/IEEE 62582-6:2021


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

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SIST EN IEC/IEEE 62582-6:2021
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

2

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SIST EN IEC/IEEE 62582-6:2021
EN IEC/IEEE 62582-6:2021 (E)
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

3

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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



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN IEC/IEEE 62582-6:2021
– 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

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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

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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
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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
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Use of IEEE Standards documents is wholly voluntary. IEEE documents are made available for use subject to
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IEC collaborates closely with IEEE in accordance with conditions determined by agreement between the two
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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
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indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that implementation of this IEC/IEEE Publication may require use of
material covered by patent rights. By publication of this standard, no position is taken with respect to the
existence or validity of any patent rights in connection therewith. IEC or IEEE shall not be held responsible for
identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal
validity or scope of Patent Claims or determining whether any licensing terms or conditions provided in
connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or
non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent
rights, and the risk of infringement of such rights, is entirely their own responsibility.

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SIST EN IEC/IEEE 62582-6:2021
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 5 –
International Standard IEC/IEEE 62582-6 has been prepared by subcommittee 45A:
Instrumentation, control and electrical power systems of nuclear facilities, of IEC technical
committee 45: Nuclear instrumentation, in cooperation with the Nuclear Power Engineering
1
Committee of the Power & Energy Society of the IEEE] , under the IEC/IEEE Dual Logo
Agreement.
It is published as an IEC/IEEE dual logo standard.
The text of this International Standard is based on the following documents:
FDIS Report on voting
45A/1267/FDIS 45A/1277/RVD

Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
A list of all parts in the IEC/IEEE 62582 series, published under the general title Nuclear
power plants – Instrumentation and control important to safety – Electrical equipment
condition monitoring methods, can be found on the IEC website.
International standards are drafted in accordance with the rules given in the ISO/IEC
Directives, Part 2.
The IEC Technical Committee and IEEE Technical Committee have decided that the contents
of this publication will remain unchanged until the stability date indicated on the IEC web site
under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.


_____________
1
A list of IEEE participants can be found at the following URL: https://ieee-
sa.imeetcentral.com/p/eAAAAAAAQbmGAAAAACt2TZA

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SIST EN IEC/IEEE 62582-6:2021
– 6 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
INTRODUCTION
a) Technical background, main issues and organisation of the Standard
This IEC/IEEE standard specifically focuses on insulation resistance measurement methods
for monitoring of the dielectric condition of instrumentation and control cables during
simulation of design basis events.
This IEC/IEEE standard is the sixth part of the IEC/IEEE 62582-series. It contains detailed
descriptions of condition monitoring based on insulation resistance measurements.
The IEC/IEEE 62582-series of standards is issued with a joint logo which makes it applicable
to management of ageing of electrical equipment qualified to IEEE as well as IEC Standards.
For aged cables and accessories, the dielectric behaviour during simulated accident
conditions generally indicates the condition of the cable during the simulated accident
condition.
Significant research has been performed on condition monitoring techniques and the use of
these techniques in equipment qualification as noted in NUREG/CR-6704, vol.2
(BNL-NUREG-52610) and JNES-SS-0903, 2009.
It is intended that this Standard be used by test laboratories, operators of nuclear power
plants, systems evaluators and licensors.
b) Situation of the current Standard in the structure of the IEC SC 45A standard series
IEC/IEEE 62582-6 is the third level IEC SC 45A document tackling the specific issue of
application and performance of insulation resistance measurements during simulated accident
conditions in nuclear power plants.
IEC/IEEE 62582-6 is to be read in association with IEC/IEEE 62582-1. IEC/IEEE 62582-1
provides requirements for application of methods for condition monitoring of electrical
equipment important to safety of nuclear power plants.
For more details on the structure of the IEC SC 45A standard series, see item d) of this
introduction.
c) Recommendations and limitations regarding the application of the Standard
It is important to note that this Standard establishes no additional functional requirements for
safety systems.
d) Description of the structure of the IEC SC 45A standard series and relationships
with other IEC documents and other bodies documents (IAEA, ISO)
The top-level documents of the IEC SC 45A standard series are IEC 61513 and IEC 63046.
IEC 61513 provides general requirements for I&C systems and equipment that are used to
perform functions important to safety in NPPs. IEC 63046 provides general requirements for
electrical power systems of NPPs; it covers power supply systems including the supply
systems of the I&C systems. IEC 61513 and IEC 63046 are to be considered in conjunction
and at the same level. IEC 61513 and IEC 63046 structure the IEC SC 45A standard series
and shape a complete framework establishing general requirements for instrumentation,
control and electrical systems for nuclear power plants.
IEC 61513 and IEC 63046 refer directly to other IEC SC 45A standards for general topics
related to categorization of functions and classification of systems, qualification, separation,

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SIST EN IEC/IEEE 62582-6:2021
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 7 –
defence against common cause failure, control room design, electromagnetic compatibility,
cybersecurity, software and hardware aspects for programmable digital systems, coordination
of safety and security requirements and management of ageing. The standards referenced
directly at this second level should be considered together with IEC 61513 and IEC 63046 as
a consistent document set.
At a third level, IEC SC 45A standards not directly referenced by IEC 61513 or by IEC 63046
are standards related to specific equipment, technical methods, or specific activities. Usually
these documents, which make reference to second-level documents for general topics, can be
used on their own.
A fourth level extending the IEC SC 45 standard series, corresponds to the Technical Reports
which are not normative.
The IEC SC 45A standards series consistently implements and details the safety and security
principles and basic aspects provided in the relevant IAEA safety standards and in the
relevant documents of the IAEA nuclear security series (NSS). In particular this includes the
IAEA requirements SSR-2/1, establishing safety requirements related to the design of nuclear
power plants (NPPs), the IAEA safety guide SSG-30 dealing with the safety classification of
structures, systems and components in NPPs, the IAEA safety guide SSG-39 dealing with the
design of instrumentation and control systems for NPPs, the IAEA safety guide SSG-34
dealing with the design of electrical power systems for NPPs and the implementing guide
NSS17 for computer security at nuclear facilities. The safety and security terminology and
definitions used by SC 45A standards are consistent with those used by the IAEA.
IEC 61513 and IEC 63046 have adopted a presentation format similar to the basic safety
publication IEC 61508 with an overall life-cycle framework and a system life-cycle framework.
Regarding nuclear safety, IEC 61513 and IEC 63046 provide the interpretation of the general
requirements of IEC 61508-1, IEC 61508-2 and IEC 61508-4, for the nuclear application
sector. In this framework IEC 60880, IEC 62138 and IEC 62566 correspond to IEC 61508-3
for the nuclear application sector. IEC 61513 and IEC 63046 refer to ISO as well as to IAEA
GS-R part 2 and IAEA GS-G-3.1 and IAEA GS-G-3.5 for topics related to quality assurance
(QA). At level 2, regarding nuclear security, IEC 62645 is the entry document for the
IEC/SC 45A security standards. It builds upon the valid high level principles and main
concepts of the generic security standards, in particular ISO/IEC 27001 and ISO/IEC 27002; it
adapts them and completes them to fit the nuclear context and coordinates with the
IEC 62443 series. At level 2, IEC 60964 is the entry document for the IEC/SC 45A control
rooms standards and IEC 62342 is the entry document for the ageing management standards.
NOTE 1 It is assumed that for the design of I&C systems in NPPs that implement conventional safety functions
(e.g. to address worker safety, asset protection, chemical hazards, process energy hazards) international or
national standards would be applied.
NOTE 2 IEC/SC 45A domain was extended in 2013 to cover electrical systems. In 2014 and 2015 discussions
were held in IEC/SC 45A to decide how and where general requirements for the design of electrical systems were
to be considered. IEC/SC 45A experts recommended that an independent standard be developed at the same level
as IEC 61513 to establish general requirements for electrical systems. Project IEC 63046 is now launched to cover
this objective. When IEC 63046 is published, this NOTE 2 of the introduction of IEC/SC 45A standards will be
suppressed.

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NUCLEAR POWER PLANTS ‒
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY ‒
ELECTRICAL EQUIPMENT CONDITION MONITORING METHODS –

Part 6: Insulation resistance



1 Scope
This part of IEC/IEEE 62582 contains methods for condition monitoring of organic and
polymeric materials in instrumentation and control cables using insulation resistance
measurements in the detail necessary to produce accurate and reproducible results during
simulated accident conditions. It includes the requirements for the measurement system and
measurement procedure, and the reporting of the measurement results.
NOTE Measurement of insulation resistance during simulated accident conditions with the aim of determining the
lowest value during the accident in order to assess cable performance involves special requirements given in this
document. Methods for measurement under stable (non-accident) conditions are available in other international
standards, e.g. IEC 62631-3-3.
The different parts of the IEC/IEEE 62582 series are measurement standards, primarily for
use in the management of ageing in initial qualification and after installat
...