EN 62927:2017/A1:2023

SLOVENSKI STANDARD
01-september-2023
Elektronke za napetostno napajane pretvornike za statični sinhroni kompenzator
(STATCOM) - Električno preskušanje - Dopolnilo A1 (IEC 62927:2017/AMD1:2023)
Amendment 1 - Voltage sourced converter (VSC) valves for static synchronous
compensator (STATCOM) - Electrical testing (IEC 62927:2017/AMD1:2023)
Ventile von Spannungszwischenkreis-Stromrichtern (VSC) für STATCOM - Elektrische
Prüfungen (IEC 62927:2017/AMD1:2023)
Valves de convertisseur source de tension (VSC) pour compensateur synchrone statique
(STATCOM) - Essais électriques (IEC 62927:2017/AMD1:2023)
Ta slovenski standard je istoveten z: EN 62927:2017/A1:2023
ICS:
19.080 Električno in elektronsko Electrical and electronic
preskušanje testing
29.200 Usmerniki. Pretvorniki. Rectifiers. Convertors.
Stabilizirano električno Stabilized power supply
napajanje
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62927:2017/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2023
ICS 29.200; 29.240.99
English Version
Voltage sourced converter (VSC) valves for static synchronous
compensator (STATCOM) - Electrical testing
(IEC 62927:2017/AMD1:2023)
Valves de convertisseur source de tension (VSC) pour Ventile von Spannungszwischenkreis-Stromrichtern (VSC)
compensateur synchrone statique (STATCOM) - Essais für STATCOM - Elektrische Prüfungen
électriques (IEC 62927:2017/AMD1:2023)
(IEC 62927:2017/AMD1:2023)
This amendment A1 modifies the European Standard EN 62927:2017; it was approved by CENELEC on 2023-06-15. CENELEC members
are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62927:2017/A1:2023 E

European foreword
The text of document 22F/699/CDV, future IEC 62927/AMD1, prepared by SC 22F "Power electronics
for electrical transmission and distribution systems" of IEC/TC 22 "Power electronic systems and
equipment" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-03-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-06-15
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.
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 62927:2017/AMD1:2023 was approved by CENELEC as a
European Standard without any modification.
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.cencenelec.eu.
The Annex ZA of EN 62927:2017 applies with the following changes:
Publication Year Title EN/HD Year

Replace the reference IEC 60071-1:2006 with the following new reference:

IEC 60071-1 2019 Insulation co-ordination - Part 1: EN IEC 60071-1 2019
Definitions, principles and rules

IEC 62927 ®
Edition 1.0 2023-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Voltage sourced converter (VSC) valves for static synchronous compensator

(STATCOM) – Electrical testing

Valves de convertisseur source de tension (VSC) pour compensateur synchrone

statique (STATCOM) – Essais électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.200; 29.240.99 ISBN 978-2-8322-6945-9

– 2 – IEC 62927:2017/AMD1:2023
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
VOLTAGE SOURCED CONVERTER (VSC) VALVES
FOR STATIC SYNCHRONOUS COMPENSATOR (STATCOM) –
ELECTRICAL TESTING
AMENDMENT 1
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 document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 62927:2017 has been prepared by subcommittee 22F: Power electronics
for electrical transmission and distribution systems, of IEC technical committee 22: Power
electronic systems and equipment.
The text of this Amendment is based on the following documents:
Draft Report on voting
22F/699/CDV 22F/721/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.

IEC 62927:2017/AMD1:2023 – 3 –
© IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.
___________
2 Normative references
Replace the existing reference "IEC 60071-1:2006" and its title with the following new reference
and title:
IEC 60071-1:2019, Insulation co-ordination – Part 1: Definitions, principles and rules

4.1.5 Evidence in lieu
Add, in the second sentence of the existing paragraph, after the words "performing a type test",
the words "or individual parts of it".

4.1.6 Test object
Delete, in the first existing paragraph, the first sentence.
Delete, in the second sentence of the existing paragraph, the words "for those tests".
Table 1 – Minimum number of valve levels to be tested as a function of the number of
valve levels per valve
Replace, in the existing table, the header of the first column "Number of valve levels per valve"
with the new header "Number of valve levels, including redundant levels".
Add, in the third row of the existing second column, after the number "10", the word "valve".
Delete, in item c) of the existing paragraph, in the second sentence, the words "with the
agreement of the purchaser and supplier".
Replace, in the item d) of the existing paragraph, the verb "should" with "shall".
Add, after item d) of the existing paragraph, the following new paragraph:

– 4 – IEC 62927:2017/AMD1:2023
© IEC 2023
Subclause 4.1.6 does not apply to tests on the valve supporting structure and multiple valve
unit. The test object for those tests is defined in 7.2 and 8.3.

4.1.10 Conditions to be considered in determination of type test parameters
Replace, in the existing paragraph, the verb "should" with "shall".

4.4 Permissible component failures during type testing
Add, at the end of the existing third paragraph, the following new sentence:
Malfunction of valve level and component degrading detected in the routine test after type test
are deemed as faults shown by the rightest column of Table 2.

Table 3 – List of type tests
Delete, in the existing seventh row of the first column, the brackets "(optional)".

6.3 Test circuit
Add, after the existing second paragraph, the following new paragraph:
In order to reproduce correct heating effects, the operational test should be performed at the
service frequency. When the service frequency is different from the test frequency, then the
test conditions shall be adjusted so as to approximately compensate the difference in frequency
dependent losses, as necessary to demonstrate the proper stressing of the equipment.

6.4 Maximum continuous operating duty test
Add, in the existing second paragraph, at the start of the third bulleted list item, the words
"where snubbers are used,".
Add, in the existing third paragraph, at the start of the second bulleted list item, the words
"where snubbers are used,".
Add, at the start of the existing seventh paragraph, starting with "The test voltage U ", the
tpv1
text "In principle,".
Add, before the existing last paragraph, the following new note:
NOTE Test voltage for MMC valves can be defined by the operating voltage of the submodule capacitor. A test
safety factor of 1,05 is applied to the test voltage for MMC valves.

6.5 Maximum temporary overload operating duty test
Add, after the existing first paragraph, the following new pa
...