SIST EN IEC 61869-13:2021
(Main)Instrument transformers - Part 13: Stand-alone merging unit (SAMU) (IEC 61869-13:2021)
Instrument transformers - Part 13: Stand-alone merging unit (SAMU) (IEC 61869-13:2021)
Clause 1 of IEC 61869-1:2007 is replaced by the following:
This part of IEC 61869 is a product standard and covers only additional requirements for standalone
merging units (SAMUs) used for AC applications having rated frequencies from 15 Hz to
100 Hz. The digital output format specification is not covered by this document; it is
standardized in IEC 61869-9 as an application of IEC 61850, which specifies the power utility
communication architecture.
This document covers SAMUs having standardized analogue inputs (for example: 1 A, 5 A,
3,25 V / √3 or 100 V / √3) provided by instrument transformers compliant with relevant product
standards (e.g. IEC 61869-2 to IEC 61869-5, IEC 61869-7, IEC 61869-8, IEC 61869-10,
IEC 61869-11, IEC 60044-1 to IEC 60044-6, IEC 60185, IEC 60186, IEEE C57.13), and aims
to convert them to the digital output compliant with IEC 61869-9. Other input and output types
are outside the scope of this document. Appropriate SAMU functionality can be combined with
switchgear controller functionality defined in IEC 62271-3 or other IED functionality defined in
IEC 60255 (all parts).
Cyber security requirements are outside the scope of this document and are covered by the
IEC 62351 series.
Messwandler - Teil 13: Unabhängige Merging Unit (IEC 61869-13:2021)
Transformateurs de mesure - Partie 13: Concentrateur autonome (SAMU) (IEC 61869-13:2021)
L'IEC 61869-13:2021 est une norme de produits et ne couvre que les exigences supplémentaires pour les concentrateurs autonomes (SAMU) utilisés pour les applications en courant continu avec une fréquence assignée comprise entre 15 Hz et 100 Hz. Le présent document ne spécifie pas le format de sortie numérique. Celui-ci est normalisé par l'IEC 61869-9, en tant qu'application de l'IEC 61850, qui spécifie l'architecture de communication des services publics d'électricité.
Le présent document couvre les SAMU dont les entrées analogiques sont normalisées (par exemple: 1 A, 5 A, 3,25 V / √3 ou 100 V / √3), fournies par des transformateurs de mesures conformes aux normes de produits pertinentes (par exemple IEC 61869-2 à IEC 61869-5, IEC 61869-7, IEC 61869-8, IEC 61869-10, IEC 61869-11, IEC 60044-1 à IEC 60044-6, IEC 60185, IEC 60186, IEEE C57.13), et vise à les convertir en sortie numérique conforme à l'IEC 61869-9. Les autres types d'entrées et de sorties sont hors du domaine d'application du présent document. La fonctionnalité SAMU adaptée peut être combinée à un appareillage de commande de distribution, défini dans l'IEC 62271-3, ou à d'autres fonctionnalités d'IED définies dans l'IEC 60255 (toutes les parties).
Les exigences en matière de cybersécurité sont hors du domaine d'application du présent document et sont couvertes par la série IEC 62351.
L'IEC 61869-13:2021 doit être lue conjointement avec l'IEC 61869-9:2016, Interface numérique des transformateurs de mesure, et l'IEC 618696:2016, Exigences générales supplémentaires concernant les transformateurs de mesure de faible puissance, qui sont elles-mêmes fondées sur l'IEC 61869-1:2007, Exigences générales.
Instrumentni transformatorji - 13. del: Samostojni koncentrator (SAMU) (IEC 61869-13:2021)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 61869-13:2021
01-september-2021
Instrumentni transformatorji - 13. del: Samostojni koncentrator (SAMU) (IEC 61869
-13:2021)
Instrument transformers - Part 13: Stand-alone merging unit (SAMU) (IEC 61869-
13:2021)
Messwandler - Teil 13: Unabhängige Merging Unit (IEC 61869-13:2021)
Transformateurs de mesure - Partie 13: Concentrateur autonome (SAMU) (IEC 61869-
13:2021)
Ta slovenski standard je istoveten z: EN IEC 61869-13:2021
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
SIST EN IEC 61869-13:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN IEC 61869-13:2021
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SIST EN IEC 61869-13:2021
EUROPEAN STANDARD EN IEC 61869-13
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2021
ICS 17.220.20
English Version
Instrument transformers - Part 13: Stand-alone merging unit
(SAMU)
(IEC 61869-13:2021)
Transformateurs de mesure - Partie 13: Concentrateur Messwandler - Teil 13: Unabhängige Merging Unit
autonome (SAMU) (IEC 61869-13:2021)
(IEC 61869-13:2021)
This European Standard was approved by CENELEC on 2021-03-10. 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 61869-13:2021 E
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SIST EN IEC 61869-13:2021
EN IEC 61869-13:2021 (E)
European foreword
The text of document 38/634/FDIS, future edition 1 of IEC 61869-13, prepared by IEC/TC 38
“Instrument transformers” was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 61869-13:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-01-16
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-07-16
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.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61869-13:2021 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 60255 series NOTE Harmonized as EN 60255 series
IEC 60255-1 NOTE Harmonized as EN 60255-1
IEC 60255-21-1 NOTE Harmonized as EN 60255-21-1
IEC 60255-21-2 NOTE Harmonized as EN 60255-21-2
IEC 60255-21-3 NOTE Harmonized as EN 60255-21-3
IEC 60255-26:2013 NOTE Harmonized as EN 60255-26:2013 (not modified)
IEC 61000-6-5 NOTE Harmonized as EN 61000-6-5
IEC 61850-9-2 NOTE Harmonized as EN 61850-9-2
IEC 61869-3 NOTE Harmonized as EN 61869-3
IEC 61869-4 NOTE Harmonized as EN 61869-4
IEC 61869-5 NOTE Harmonized as EN 61869-5
IEC 62052 series NOTE Harmonized as EN 62052 series
IEC 62053 series NOTE Harmonized as EN 62053 series
2
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SIST EN IEC 61869-13:2021
EN IEC 61869-13:2021 (E)
IEC 62053-22 NOTE Harmonized as EN IEC 62053-22
IEC 62271 series NOTE Harmonized as EN 62271 series
IEC 62271-1 NOTE Harmonized as EN 62271-1
IEC 62271-3 NOTE Harmonized as EN 62271-3
3
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SIST EN IEC 61869-13:2021
EN IEC 61869-13:2021 (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
IEC 60068-2-1 2007 Environmental testing - Part 2–1: Tests - EN 60068-2-1 2007
Test A: Cold
IEC 60068-2-2 2007 Environmental testing - Part 2–2: Tests - EN 60068-2-2 2007
Test B: Dry heat
IEC 60068-2-14 2009 Environmental testing - Part 2–14: Tests - EN 60068-2-14 2009
Test N: Change of temperature
IEC 60068-2-30 2005 Environmental testing - Part 2–30: Tests - EN 60068-2-30 2005
Test Db: Damp heat, cyclic (12 h + 12 h
cycle)
IEC 60068-2-78 2012 Environmental testing - Part 2–78: Tests - EN 60068-2-78 2013
Test Cab: Damp heat, steady-state
IEC 60255-27 2013 Measuring relays and protection equipment EN 60255-27 2014
- Part 27: Product safety requirements
IEC 60664-1 2020 Insulation coordination for equipment EN IEC 60664-1 2020
within low-voltage supply systems - Part 1:
Principles, requirements and tests
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - PartEN 61000-4-2 2009
4–2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - PartEN 61000-4-3 2006
4–3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
+ A1 2007 + A1 2008
+ A2 2010 + A2 2010
IEC 61000-4-4 2012 Electromagnetic compatibility (EMC) - PartEN 61000-4-4 2012
4–4: Testing and measurement techniques
- Electrical fast transient/burst immunity
test
4
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SIST EN IEC 61869-13:2021
EN IEC 61869-13:2021 (E)
IEC 61000-4-5 2014 Electromagnetic compatibility (EMC) - PartEN 61000-4-5 2014
4–5: Testing and measurement techniques
- Surge immunity test
IEC 61000-4-6 2013 Electromagnetic compatibility (EMC) - PartEN 61000-4-6 2014
4–6: Testing and measurement techniques
- Immunity to conducted disturbances,
induced by radio-frequency fields
IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) - PartEN 61000-4-8 2010
4–8: Testing and measurement techniques
- Power frequency magnetic field immunity
test
IEC 61000-4-9 2016 Electromagnetic compatibility (EMC) - PartEN 61000-4-9 2016
4–9: Testing and measurement techniques
- Impulse magnetic field immunity test
IEC 61000-4-10 2016 Electromagnetic compatibility (EMC) - PartEN 61000-4-10 2017
4–10: Testing and measurement
techniques - Damped oscillatory magnetic
field immunity test
IEC 61000-4-11 2020 Electromagnetic compatibility (EMC) - PartEN IEC 61000-4-11 2020
4–11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests for equipment with input
current up to 16 A per phase
IEC 61000-4-13 - Electromagnetic compatibility (EMC) - PartEN 61000-4-13 -
4–13: Testing and measurement
techniques - Harmonics and
interharmonics including mains signalling
at a.c. power port, low frequency immunity
tests
IEC 61000-4-16 2015 Electromagnetic compatibility (EMC) - PartEN 61000-4-16 2016
4–16: Testing and measurement
techniques - Test for immunity to
conducted, common mode disturbances in
the frequency range 0 Hz to 150 kHz
IEC 61000-4-17 1999 Electromagnetic compatibility (EMC) - PartEN 61000-4-17 1999
4–17: Testing and measurement
techniques - Ripple on d.c. input power
port immunity test
+ A1 2001 + A1 2004
+ A2 2008 + A2 2009
IEC 61000-4-18 2006 Electromagnetic compatibility (EMC) - PartEN 61000-4-18 2007
4–18: Testing and measurement
techniques - Damped oscillatory wave
immunity test
- - + corrigendum Sep. 2007
+ A1 2010 + A1 2010
IEC 61000-4-29 2000 Electromagnetic compatibility (EMC) - PartEN 61000-4-29 2000
4–29: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations on d.c.
input power port immunity tests
5
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SIST EN IEC 61869-13:2021
EN IEC 61869-13:2021 (E)
IEC 61850-7-4 - Communication networks and systems for EN 61850-7-4 -
power utility automation - Part 7–4: Basic
communication structure - Compatible
logical node classes and data object
classes
IEC 61869-1 (mod) 2007 Instrument transformers - Part 1: General EN 61869-1 2009
requirements
IEC 61869-2 2012 Instrument transformers - Part 2: Additional EN 61869-2 2012
requirements for current transformers
IEC 61869-6 2016 Instrument transformers - Part 6: Additional EN 61869-6 2016
general requirements for low-power
instrument transformers
IEC 61869-9 2016 Instrument transformers - Part 9: Digital EN IEC 61869-9 2019
interface for instrument transformers
IEC 61869-10 2017 Instrument transformers - Part 10: EN IEC 61869-10 2018
Additional requirements for low-power
passive current transformers
IEC 61869-11 2017 Instrument transformers - Part 11: EN IEC 61869-11 2018
Additional requirements for low-power
passive voltage transformers
CISPR 11 - Industrial, scientific and medical equipment EN 55011 -
- Radio-frequency disturbance
characteristics - Limits and methods of
measurement
CISPR 32 2015 Electromagnetic compatibility of multimedia EN 55032 2015
equipment - Emission requirements
+ A1 2019 + A1 2020
- - + A11 2020
6
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SIST EN IEC 61869-13:2021
IEC 61869-13
®
Edition 1.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Instrument transformers –
Part 13: Stand-alone merging unit (SAMU)
Transformateurs de mesure –
Partie 13: Concentrateur autonome (SAMU)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-9284-6
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 61869-13:2021
– 2 – IEC 61869-13:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 11
4 Normal and special service conditions . 14
5 Ratings . 15
6 Design and construction . 23
7 Tests . 32
8 Rules for transport, storage, erection, operation and maintenance . 49
9 Safety . 49
Annex 13A (informative) Measurement chain accuracy class considerations . 50
Annex 13B (informative) Measurement examples of switching and lightning surge
voltage in gas-insulated switchgear . 52
Annex 13C (normative) Low-power instrument transformer inputs . 63
Bibliography . 67
Figure 1301 – Stand-alone merging unit (functional concept example) . 7
Figure 1302 – Stand-alone merging unit application example . 7
Figure 1303 – Illustration of the SAMU position in relation to other devices and
standards in the functional chain . 8
Figure 1304 – Specified input current time constant T . 13
I
Figure 1305 – Dynamic range concept example . 19
Figure 604 (modified) – Examples of subassembly subjected to EMC tests – Usual
structure used in HV AIS applications . 34
Figure 1306 – Gradual shutdown – Startup test . 38
Figure 1307 – C-O-C-O duty cycle . 39
Figure 13A.1 – SAMU application example . 50
Figure 13B.1 – Constructional example of GIS with typical surge voltage sources. 52
Figure 13B.2 – Measured 550 kV GIS construction . 53
Figure 13B.3 – Measurement results showing a switching surge peak voltage
magnitude caused by the DS operation in Figure 13B.2 . 54
Figure 13B.4 – Measured 275 kV GIS construction . 55
Figure 13B.5 – Switching and lightning surge voltage waveforms . 56
Figure 13B.6 – Switching surge voltage measurement setup on a 550 kV GIS
with/without an insulating flange surge absorber . 57
Figure 13B.7 – Switching surge voltage measurement results when the DS was
operated with/without the surge absorber . 58
Figure 13B.8 – CT secondary circuit configuration for the 500 kV GIS . 59
Figure 13B.9 – DS control circuit configuration for the 500 kV GIS test . 59
Figure 13B.10 – Waveforms of switching surge voltage at measured point I (see
Table 13B.3) . 60
Figure 13B.11 – Block diagram of the electronic VT with amplifier tested in the 500 kV
GIS system . 61
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SIST EN IEC 61869-13:2021
IEC 61869-13:2021 © IEC 2021 – 3 –
Figure 13B.12 – Lightning surge voltage as a function of surge absorbing capacitor value . 61
Figure 13B.13 – Lightning surge voltage as a function of coaxial cable length . 62
Table 1301 – Insulation requirements for analogue inputs . 16
Table 1302 – Measuring accuracy class 0,05 . 17
Table 1303 – Limits of current error and phase error for SAMU measuring accuracy
current channels . 18
Table 1304 – Limits of current errors for SAMU TPM class rated protection accuracy
current channels . 20
Table 1305 – Limits of voltage error and phase error for SAMU voltage channels . 21
Table 1306 – SAMU TCTR class settings . 23
Table 1307 – SAMU TVTR class settings . 23
Table 1308 – Immunity requirements and tests . 24
Table 1309 – Acceptance criteria for EMC immunity tests . 25
Table 1310 – Radiated emissions tests . 27
Table 1311 – Conducted emissions tests . 27
Table 1312 – SAMU rating plate markings . 28
Table 1313 – Ratings defined in accordance with IEC 61850-7-4 . 32
Table 10 – List of tests. 33
Table 1314 – Dry-heat test – Operational . 44
Table 1315 – Cold test – Operational . 44
Table 1316 – Dry-heat test at maximum storage temperature . 45
Table 1317 – Cold test at minimum storage temperature . 45
Table 1318 – Change of temperature (Cyclic temperature test) . 46
Table 1319 – Damp heat steady state test . 47
Table 1320 – Cyclic temperature with humidity test . 48
Table 13A.1 – Combined accuracy class table . 50
Table 13B.1 – Measurement results showing switching and lightning surge voltage
recorded for the setup in Figure 13B.4 . 55
Table 13B.2 – Measurement results of switching surge voltage on CT secondary circuit . 59
Table 13B.3 – Measurement results showing the switching surge voltage coupling to
the DS control circuit . 59
Table 13C.1 – ITRat setting units . 65
Table 13C.2 – SAMU rating plate marking modifications . 65
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SIST EN IEC 61869-13:2021
– 4 – IEC 61869-13:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSTRUMENT TRANSFORMERS –
Part 13: Stand-alone merging unit (SAMU)
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. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements 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.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC 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
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is 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 its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61869-13 has been prepared by IEC technical committee 38:
Instrument transformers.
The text of this International Standard is based on the following documents:
FDIS Report on voting
38/634/FDIS 38/640/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.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61869 series, published under the general title Instrument
transformers, can be found on the IEC website.
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SIST EN IEC 61869-13:2021
IEC 61869-13:2021 © IEC 2021 – 5 –
This Part 13 is to be used in conjunction with IEC 61869-9:2016, Digital interface for instrument
transformers, and IEC 61869-6:2016, Additional general requirements for low-power instrument
transformers, which, in turn, are based on IEC 61869-1:2007, General requirements.
This Part 13 follows the structure of IEC 61869-1:2007 and IEC 61869-6:2016 and supplements
or modifies their corresponding clauses.
When a particular clause/subclause of Part 1 or Part 6 is not mentioned in this Part 13, that
subclause applies. When this document states "addition", "modification" or "replacement", the
relevant text in Part 1 or Part 6 is to be adapted accordingly.
For additional clauses, subclauses, figures, tables, annexes or note, the following numbering
system is used:
– clauses, subclauses, tables, figures and notes that are numbered starting from 1301 are
additional to those in Part 1 and Part 6;
– additional annexes are lettered 13A, 13B, etc.
An overview of the planned set of standards at the date of publication of this document is given
below. The updated list of standards issued by IEC TC 38 is available at the website:
www.iec.ch.
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– 6 – IEC 61869-13:2021 © IEC 2021
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
IEC STANDARD STANDARD
IEC IEC
61869-1 61869-2 ADDITIONAL REQUIREMENTS FOR 60044-1
CURRENT TRANSFORMERS 60044-6
GENERAL
REQUIREMENTS
61869-3 ADDITIONAL REQUIREMENTS FOR 60044-2
FOR
INDUCTIVE VOLTAGE TRANSFORMERS
INSTRUMENT
61869-4 ADDITIONAL REQUIREMENTS FOR 60044-3
TRANSFORMERS
COMBINED TRANSFORMERS
ADDITIONAL REQUIREMENTS FOR
61869-5 60044-5
CAPACITOR VOLTAGE TRANSFORMERS
61869-6 61869-7 ADDITIONAL REQUIREMENTS FOR 60044-7
ELECTRONIC VOLTAGE
ADDITIONAL
TRANSFORMERS
GENERAL
REQUIREMENTS 61869-8 ADDITIONAL REQUIREMENTS FOR 60044-8
FOR LOW-POWER
ELECTRONIC CURRENT
INSTRUMENT
TRANSFORMERS
TRANSFORMERS
61869-9 DIGITAL INTERFACE FOR INSTRUMENT
TRANSFORMERS
61869-10 ADDITIONAL REQUIREMENTS FOR
LOW-POWER PASSIVE CURRENT
TRANSFORMERS
61869-11 ADDITIONAL REQUIREMENTS FOR 60044-7
LOW-POWER PASSIVE VOLTAGE
TRANSFORMERS
61869-12 ADDITIONAL REQUIREMENTS FOR
COMBINED ELECTRONIC INSTRUMENT
TRANSFORMERS AND COMBINED
STAND-ALONE SENSORS
61869-13 STAND-ALONE MERGING UNIT
61869-14 ADDITIONAL REQUIREMENTS FOR
CURRENT TRANSFORMERS FOR DC
APPLICATIONS
61869-15 ADDITIONAL REQUIREMENTS FOR
VOLTAGE TRANSFORMERS FOR DC
APPLICATIONS
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document 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.
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SIST EN IEC 61869-13:2021
IEC 61869-13:2021 © IEC 2021 – 7 –
INTRODUCTION
General
This document is an IEC 61869 series product standard which defines additional requirements
for a stand-alone merging unit (SAMU).
The general block diagram showing a typical SAMU application example is given in Figure 1301.
Figure 1301 – Stand-alone merging unit (functional concept example)
An application example showing a three-phase dead tank circuit breaker equipped with bushing
type current transformers and a stand-alone merging unit mounted inside the breaker control
cabinet is shown in Figure 1302.
Figure 1302 – Stand-alone merging unit application example
The SAMU output may be used by many devices and is therefore of interest to multiple technical
committees in addition to TC 38, for example: TC 57: Power systems management and
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SIST EN IEC 61869-13:2021
– 8 – IEC 61869-13:2021 © IEC 2021
associated information exchange, TC 95: Measuring relays and protection equipment, TC 13:
Electrical energy measurement and control, TC 85: Measuring equipment for electrical and
electromagnetic quantities, and TC 17: High-voltage switchgear and controlgear, as shown in
Figure 1303.
Figure 1303 – Illustration of the SAMU position in relation
to other devices and standards in the functional chain
Position of this document in relation to IEC 61850 (all parts) of TC 57
IEC 61850 (all parts) is a series used to define various aspects of power utility communications.
Its applicability to this document is inherited through IE
...
SLOVENSKI STANDARD
oSIST prEN 61869-13:2019
01-april-2019
Merilni transformatorji - 13. del: Samostojni koncentrator
Instrument Transformers - Part 13: Standalone Merging Unit
Ta slovenski standard je istoveten z: prEN IEC 61869-13:2019
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
oSIST prEN 61869-13:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 61869-13:2019
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oSIST prEN 61869-13:2019
38/599/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61869-13 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-01-18 2019-04-12
SUPERSEDES DOCUMENTS:
38/531/CDV,38/557/RVC
IEC TC 38 : INSTRUMENT TRANSFORMERS
SECRETARIAT: SECRETARY:
Italy Mr Filippo Frugoni
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 13,TC 57,TC 85,TC 95
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
TITLE:
Instrument Transformers - Part 13: Standalone Merging Unit
PROPOSED STABILITY DATE: 2022
NOTE FROM TC/SC OFFICERS:
Copyright © 2018 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing
National Committee positions. You may not copy or "mirror" the file or printed version of the document, or any
part of it, for any other purpose without permission in writing from IEC.
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oSIST prEN 61869-13:2019
38/599/CDV – 2 – IEC CDV 61869-13 © IEC 2018
1 CONTENTS
2
3 FOREWORD . 6
4 INTRODUCTION . 9
5 1 Scope . 10
6 2 Normative reference . 11
7 3 Terms and definitions . 13
8 3.1 General terms and definitions . 13
9 3.2 Terms and definitions related to dielectric ratings and voltages . 14
10 3.3 Terms and definitions related to current ratings . 14
11 3.4 Terms and definitions related to accuracy . 15
12 3.7 Index of abbreviations and symbols . 16
13 4 Normal and special service conditions . 16
14 4.3 Special service conditions . 16
15 4.3.3 Ambient temperature. 16
16 5 Ratings . 16
17 5.3 Rated insulation levels . 16
18 5.3.2 Rated primary terminal insulation level . 16
19 5.3.3 Other requirements for primary terminal insulation . 16
20 5.3.4 Between-section insulation requirements . 17
21 5.3.5 Insulation requirements for secondary terminals . 17
22 5.3.1301 Insulation requirements for SAMU inputs from instrument transformers . 17
23 5.5 Rated output . 17
24 5.6 Rated accuracy class . 17
25 5.6.1301 Accuracy requirements for SAMU IT channels . 18
26 5.6.1301.1 Standard accuracy classes for SAMU current channels
27 measuring accuracy class designation . 18
28 5.6.1301.2 SAMU current channels with protection accuracy class designation . 20
29 5.6.1301.3 Standard accuracy classes for SAMU current channels with protection
30 accuracy class designation . 21
31 5.6.1302 Standard accuracy classes for SAMU voltage channels . 22
32 5.6.1303 SAMU inputs from current transformers . 22
33 5.6.1304 SAMU inputs from voltage transformers . 23
34 5.6.1305 SAMU settings . 23
35 6 Design and construction . 23
36 6.11 Electromagnetic compatibility (EMC) . 23
37 6.11.3 Requirements for immunity . 23
38 6.11.3.601 General . 23
39 6.11.3.608 Electrical fast transient burst . 25
40 6.11.3.609 Oscillatory wave immunity . 25
41 6.11.3.1301 Voltage ripple on DC power supply . 25
42 6.11.3.1302 Gradual shutdown and start-up test . 25
43 6.11.4 Requirement for transmitted overvoltages . 25
44 6.11.601 Emission requirements . 25
45 6.13 Markings . 25
46 6.13.1301 Terminal markings . 26
47 6.13.1302 Rating plate markings . 26
48 6.13.1303 Marking durability . 29
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49 6.607 Vibrations . 29
50 7 Tests . 30
51 7.1 General . 30
52 7.1.2 List of tests . 30
53 7.2 Type tests . 30
54 7.2.1 General . 30
55 7.2.2 Temperature-rise test . 31
56 7.2.3 Impulse voltage withstand test on primary terminals . 31
57 7.2.4 Wet test for outdoor type transformers . 31
58 7.2.5 Electromagnetic compatibility tests . 31
59 7.2.5.2.601 General . 31
60 7.2.5.2.603 Harmonic and interharmonic disturbance test . 31
61 7.2.5.2.604 Slow voltage variation test . 32
62 7.2.5.2.605 Voltage dips and short interruption test . 32
63 7.2.5.2.606 Surge immunity test . 32
64 7.2.5.2.607 Conducted immunity tests (150 kHz to 80 MHz) . 32
65 7.2.5.2.608 Conducted immunity tests (0 Hz to 150 kHz) . 32
66 7.2.5.2.609 Electronic fast transient/burst test . 33
67 7.2.5.2.610 Damped oscillatory wave immunity test . 33
68 7.2.5.2.611 Electrostatic discharge test . 33
69 7.2.5.2.612 Power-frequency magnetic field immunity test . 33
70 7.2.5.2.613 Pulse magnetic field immunity test . 33
71 7.2.5.2.614 Damped oscillatory magnetic field immunity test . 33
72 7.2.5.2.615 Radiated, radiofrequency, electromagnetic field immunity test . 33
73 7.2.5.2.1301 Voltage ripple on DC power supply . 34
74 7.2.5.2.1302 Gradual shutdown . 34
75 7.2.5.601 EMC emission tests . 34
76 7.2.6 Test for accuracy . 34
77 7.2.6.601 General . 34
78 7.2.6.1301 Test for error at limiting conditions for protection rated current channels . 35
79 7.2.6.1302 High-pass filter cut-off frequency measurement . 36
80 7.2.8 Enclosure tightness test at ambient temperature . 36
81 7.2.9 Pressure test for the enclosure . 36
82 7.2.601 Low-voltage component voltage withstand test . 36
83 7.2.601.2 Application of the test voltage . 36
84 7.2.601.3 Power-frequency voltage withstand test . 37
85 7.2.601.4 Impulse voltage withstand test . 37
86 7.2.1301 Climatic environmental requirements . 37
87 7.2.1301.1 Dry-heat test – Operational . 37
88 7.2.1301.2 Cold test – Operational . 38
89 7.2.1301.3 Dry-heat test at maximum storage temperature . 38
90 7.2.1301.4 Cold test at minimum storage temperature . 38
91 7.2.1301.5 Damp-heat test . 38
92 7.2.1301.6 Cyclic temperature with humidity . 38
93 7.2.1302 Mechanical tests . 38
94 7.2.1302.1 Vibration . 38
95 7.2.1302.2 Shock . 38
96 7.2.1302.3 Bump . 38
97 7.2.1302.4 Seismic . 38
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98 7.3 Routine tests. 38
99 7.3.1 Power-frequency voltage withstand test on primary terminals . 38
100 7.3.2 Partial discharge measurement . 38
101 7.3.3 Power-frequency voltage withstand test between sections . 39
102 7.3.4 Power-frequency voltage withstand test on secondary terminals . 39
103 7.3.5 Test for accuracy . 39
104 7.3.6 Verification of markings . 39
105 7.3.601 Power-frequency voltage withstand test for low-voltage components . 39
106 7.4 Special tests . 39
107 7.4.601 Vibration tests . 39
108 7.4.601.1 Vibrations test for secondary parts . 39
109 7.4.601.2 Vibration test for primary parts . 39
110 7.4.601.2.1 Vibration test for primary parts during short-time current . 39
111 7.5 Sample tests . 39
112 8 Rules for transport, storage, erection, operation and maintenance . 40
113 9 Safety . 40
114 9.1301 General . 40
115 9.1302 Product safety requirements . 40
116 Annex 13A (informative) Measurement chain accuracy class considerations . 41
117 Annex 13B (informative) Measurement examples of switching and lightning surge
118 voltage in gas-insulated switchgear . 43
119 Annex 13C (normative) Low power instrument transformer inputs . 54
120 13C.1 Introduction . 54
121 13C.2 Accuracy class . 54
122 13C.3 Rated input voltage . 54
123 13C.4 LPIT input insulation requirements . 54
124 13C.5 LPIT input connectors . 54
125 13C.6 LPIT Input impedance . 55
126 13C.7 Input topology . 55
127 13C.8 Auxiliary power supply output . 55
128 13C.9 LPIT specific SAMU Settings . 55
129 13C.10 Testing . 56
130 Bibliography . 57
131
132 Figure 1301 SAMU position in relation to other devices in the functional chain . 9
133 Figure 1302 – Stand-alone merging unit (concept example) . 10
134 Figure 1303 – Stand-alone merging unit application example . 11
135 Figure 1304 – Specified input current time constant T . 15
I
136 Figure 1305 – Dynamic range concept example . 20
137 Figure 1306 – SAMU ports subjected to EMC tests . 31
138 Figure 1307 – C-O-C-O duty cycle . 35
139 Figure 13A.1 – SAMU application example . 41
140 Figure 13B.1 – constructional example of GIS with typical surge voltage sources . 43
141 Figure 13B.2 – Measured 550kV GIS construction . 44
142 Figure 13B.3 – Measurement results showing a switching surge peak voltage
143 magnitude caused by the DS operation in Figure 13B.2 . 45
144 Figure 13B.4 – Measured 275kV GIS construction . 46
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145 Figure 13B.5 – Switching and lightning surge voltage waveforms . 47
146 Figure 13B.6 – Switching surge voltage measurement setup on a 550kV GIS
147 with/without an insulating flange surge absorber . 48
148 Figure 13B.7 – Switching surge voltage measurement results when the DS was
149 operated with/without the surge absorber . 49
150 Figure 13B.8 – CT secondary circuit configuration for the 500 kV GIS . 50
151 Figure 13B.9 – DS control circuit configuration for the 500 kV GIS test . 50
152 Figure 13B.10 – Waveforms of switching surge voltage at measured point I (see Table
153 13B.3) . 51
154 Figure 13B.11 – Block diagram of the electronic VT with amplifier tested in the 500 kV
155 GIS system . 52
156 Figure 13B.12 – Lightning surge voltage as a function of surge absorbing capacitor
157 value. 52
158 Figure 13B.13 – Lightning surge voltage as a function of coaxial cable length . 53
159
160 Table 1301 – Insulation requirements for SAMU inputs . 17
161 Table 1302 – Limits of current error and phase error for SAMU measuring accuracy
162 current channels . 19
163 Table 1303 – Limits of current errors for SAMU TPS class rated protection accuracy
164 current channels . 21
165 Table 1304 – Limits of voltage error and phase error for SAMU voltage channels . 22
166 Table 1305 – SAMU TCTR class settings . 23
167 Table 1306 – SAMU TVTR class settings . 23
168 Table 1307 – Immunity requirements and tests . 24
169 Table 1308 – Acceptance criteria for EMC immunity tests . 25
170 Table 1309 – SAMU rating plate markings . 27
171 Table 1310 – Ratings exposed through IEC 61850-7-4 . 29
172 Table 1311 – Mechanical vibration tests applied to the enclosure port . 30
173 Table 10 – List of tests. 30
174 Table 13A.1 – Combined accuracy class table . 41
175 Table 13B.1 – Measurement results showing switching and lightning surge voltage
176 recorded for the setup in Figure 13B.4 . 46
177 Table 13B.2 – Measurement results of switching surge voltage on CT secondary circuit . 50
178 Table 13B.3 – Measurement results showing the switching surge voltage coupling to
179 the DS control circuit . 50
180 Table 13C1 – ITRat setting units . 55
181
182
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183 INTERNATIONAL ELECTROTECHNICAL COMMISSION
184 ____________
185
186 INSTRUMENT TRANSFORMERS –
187
188 Part 13: Stand-alone merging unit (SAMU)
189
190 FOREWORD
191 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
192 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
193 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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196 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
197 in the subject dealt with may participate in this preparatory work. International, governmental and non-
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199 with the International Organization for Standardization (ISO) in accordance with conditions determined by
200 agreement between the two organizations.
201 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
202 consensus of opinion on the relevant subjects since each technical committee has representation from all
203 interested IEC National Committees.
204 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
205 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
206 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
207 misinterpretation by any end user.
208 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
209 transparently to the maximum extent possible in their national and regional publications. Any divergence
210 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
211 the latter.
212 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
213 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
214 services carried out by independent certification bodies.
215 6) All users should ensure that they have the latest edition of this publication.
216 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
217 members of its technical committees and IEC National Committees for any personal injury, property damage or
218 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
219 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
220 Publications.
221 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
222 indispensable for the correct application of this publication.
223 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
224 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
225 International Standard IEC 61869-13 has been prepared by IEC technical committee 38:
226 Instrument transformers.
227 The text of this standard is based on the following documents:
FDIS Report on voting
38/XX/FDIS 38/XX/RVD
228
229 Full information on the voting for the approval of this International Standard can be found in
230 the report on voting indicated in the above table.
231 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
232 This standard is Part 13 of IEC 61869, published under the general title Instrument
233 transformers.
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234 This document contains specific requirements for a stand-alone merging units having a digital
235 output and is to be used with IEC 61869-9:2016, Digital Interface for instrument transformers,
236 and the relevant specific requirements standard for the instrument transformer concerned. It
237 is also to be read in conjunction with, and is based on, IEC 61869-6:2016, Additional General
238 requirements for low-power instrument transformers, which in turn is based on IEC 61869-
239 1:2007, General requirements.
240 This Part 13 follows the structure of IEC 61869-1:2007 and IEC 61869-6:2016 and
241 supplements or modifies its corresponding clauses.
242 When a particular subclause of Part 1 or Part 6 is not mentioned in this Part 13, that
243 subclause applies. When this standard states “addition”, “modification” or “replacement”, the
244 relevant text in Part 1 or Part 6 is to be adapted accordingly.
245 For additional clauses, subclauses, figures, tables, annexes or note, the following numbering
246 system is used:
247 – clauses, subclauses, tables, figures and notes that are numbered starting from 1301 are
248 additional to those in Part 1 and Part 6;
249 – additional annexes are lettered 13A, 13B, etc.
250 An overview of the planned set of standards at the date of publication of this document is
251 given below. The updated list of standards issued by IEC TC 38 is available at the website:
252 www.iec.ch
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oSIST prEN 61869-13:2019
38/599/CDV – 8 – IEC CDV 61869-13 © IEC 2018
PRODUCT FAMILY STANDARDS PRODUCT PRODUCTS OLD
STANDARD STANDARD
61869-2 ADDITIONAL REQUIREMENTS FOR 60044-1
61869-1
CURRENT TRANSFORMERS
60044-6
GENERAL
REQUIREMENTS
61869-3 ADDITIONAL REQUIREMENTS FOR 60044-2
FOR
INDUCTIVE VOLTAGE TRANSFORMERS
INSTRUMENT
TRANSFORMERS
61869-4 ADDIT
...
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