SIST EN IEC 62271-213:2021

SLOVENSKI STANDARD
01-oktober-2021
Visokonapetostne stikalne in krmilne naprave - 213. del: Sistem za detekcijo in
indikacijo napetosti (IEC 62271-213:2021)
High-voltage switchgear and controlgear - Part 213: Voltage detecting and indicating
system (IEC 62271-213:2021)
Hochspannungs-Schaltgeräte und -Schaltanlagen – Teil 213: Spannungsprüf- und -
anzeigesysteme (IEC 62271-213:2021)
Appareillage à haute tension - Partie 213: Système détecteur et indicateur de tension
(IEC 62271-213:2021)
Ta slovenski standard je istoveten z: EN IEC 62271-213:2021
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62271-213

NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 13.260; 29.130.10; 29.240.20

English Version
High-voltage switchgear and controlgear - Part 213: Voltage
detecting and indicating system
(IEC 62271-213:2021)
Appareillage à haute tension - Partie 213: Système Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil
détecteur et indicateur de tension 213: Spannungsprüf- und -anzeigesysteme
(IEC 62271-213:2021) (IEC 62271-213:2021)
This European Standard was approved by CENELEC on 2021-07-29. 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 62271-213:2021 E

European foreword
The text of document 17C/787/FDIS, future edition 1 of IEC 62271-213, prepared by SC 17C
“Assemblies” of IEC/TC 17 “High-voltage switchgear and controlgear” was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 62271-213:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–04–29
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–07–29
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 62271-213:2021 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 60999-1 NOTE Harmonized as EN 60999-1
IEC 61243-5:1997 NOTE Harmonized as EN 61243-5:2001 (modified)
IEC 61243-1:2021 NOTE Harmonized as EN IEC 61243-1:2021 (not modified)
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 60060-1 - High-voltage test techniques - Part 1: EN 60060-1 -
General definitions and test requirements
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 60068-2–6 - Environmental testing - Part 2–6: Tests - EN 60068-2–6 -
Test Fc: Vibration (sinusoidal)
IEC 60068-2–11 - Environmental testing - Part 2–11: Tests - EN IEC 60068-2– -
Test Ka: Salt mist 11
IEC 60068-2–31 - Environmental testing - Part 2–31: Tests - EN 60068-2–31 -
Test Ec: Rough handling shocks, primarily
for equipment-type specimens
IEC 60068-2–38 - Environmental testing - Part 2–38: Tests - EN IEC 60068-2– -
Test Z/AD: Composite 38
temperature/humidity cyclic test
IEC 60068-2–78 - Environmental testing - Part 2–78: Tests - EN 60068-2–78 -
Test Cab: Damp heat, steady-state
IEC 60352-1 - Solderless connections - Part 1: Wrapped EN 60352-1 -
connections - General requirements, test
methods and practical guidance
IEC 60352-2 - Solderless connections - Part 2: Crimped EN 60352-2 -
connections - General requirements, test
methods and practical guidance
IEC 60352-5 - Solderless connections - Part 5: Press-inEN IEC 60352-5 -
connections - General requirements, test
methods and practical guidance
IEC 60417 - Graphical symbols for use on equipment - -
IEC 60529 - Degrees of protection provided by - -
enclosures (IP Code)
IEC 61000-4–2 - Electromagnetic compatibility (EMC) - PartEN 61000-4–2 -
4–2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4–3 - Electromagnetic compatibility (EMC) - PartEN IEC 61000-4–3 -
4–3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61010-031 2015 Safety requirements for electrical EN 61010-031 2015
equipment for measurement, control and
laboratory use - Part 031: Safety
requirements for hand-held probe
assemblies for electrical measurement and
test
+ A1 2018  + FprA1 2018
IEC 61210 - Connecting devices - Flat quick-connect EN 61210 -
terminations for electrical copper
conductors - Safety requirements
IEC 62262 - Degrees of protection provided by EN 62262 -
enclosures for electrical equipment against
external mechanical impacts (IK code)
IEC 62271-1 - High-voltage switchgear and controlgear - EN 62271-1 -
Part 1: Common specifications for
alternating current switchgear and
controlgear
IEC 62271-213 ®
Edition 1.0 2021-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
High-voltage switchgear and controlgear –

Part 213: Voltage detecting and indicating system

Appareillage à haute tension –

Partie 213: Système détecteur et indicateur de tension

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.260; 29.130.10; 29.240.20 ISBN 978-2-8322-9890-9

– 2 – IEC 62271-213:2021  IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 Normal and special service conditions . 13
4.1 General . 13
4.2 Normal service conditions . 13
4.3 Special service conditions . 13
5 Ratings . 13
6 Design and construction . 14
6.1 General . 14
6.2 Parts of voltage detecting and indicating system . 14
6.3 VDIS description . 14
6.4 Coupling system . 16
6.5 Voltage limiting element . 17
6.6 Connecting leads . 17
6.7 Testing points . 18
6.8 Connecting points . 22
6.9 Indicator . 23
6.10 Degree of protection (IP code) . 24
6.11 Climatic requirements . 25
6.12 Mechanical requirements . 25
6.13 Electromagnetic compatibility . 26
6.14 Dielectric strength . 26
6.15 VDIS with built-in power source . 27
6.16 Marking . 28
7 Type tests . 29
7.1 General . 29
7.2 Inspection . 32
7.3 Dielectric tests . 32
7.4 Maximum current of coupling element . 33
7.5 Conditions on testing points . 33
7.6 Voltage limiting element . 34
7.7 Indication of VDIS . 34
7.8 Clear perceptibility of visual indication . 36
7.9 Phase shift . 37
7.10 Response time . 38
7.11 Non response to DC voltage . 39
7.12 Connecting leads . 39
7.13 Temperature dependence of indication . 39
7.14 Degree of protection (IP code) . 40
7.15 Damp heat . 40
7.16 Composite temperature/humidity cyclic test . 40
7.17 Vibration . 40
7.18 Mechanical impact (IK code) . 40

IEC 62271-213:2021  IEC 2021 – 3 –
7.19 Fall . 40
7.20 Electrostatic discharge . 41
7.21 Radiated electromagnetic fields . 41
7.22 VDIS with built-in power source . 41
8 Routine tests . 42
9 Guide to the selection of VDIS (informative) . 42
10 Information to be given with enquiries, tenders and orders . 43
10.1 General . 43
10.2 Information with enquiries and orders . 43
10.3 Information with tenders . 43
11 Transport, storage, installation, operation, maintenance and instructions for use . 44
11.1 General . 44
11.2 Installation . 44
11.3 Operating instructions . 44
11.4 Maintenance . 44
11.5 Instructions for use . 46
12 Safety . 47
13 Influence of VDIS on the environment . 47
Annex A (informative)  Derivations and formulas . 48
A.1 Threshold voltages for indication of VDIS. 48
A.2 Maximum measuring voltage of VDIS . 48
A.3 Impedances of connected devices to the testing points of VDIS . 49
A.4 Current levels of the testing points of VDIS . 50
Annex B (informative)  List of notes concerning certain countries . 51
Bibliography . 52

Figure 1 – Example of the typical structure of an integrated VDIS . 15
Figure 2 – Example of the typical structure of a separable VDIS . 16
Figure 3 – Plug and socket size and design without insulation shield . 20
Figure 4 – Plug and socket size and design with insulation shield . 21
Figure 5 – Maximum footprint dimensions of separable VDIS and example of
arrangement . 22
Figure 6 – Examples of socket-outlet arrangement for integrated VDIS . 22
Figure 7 – Connection of the voltage source . 35
Figure 8 – Test set-up for perceptibility of visual indication . 37
Figure 9 – Examples of measure of the response time . 38

Table 1 – Impedances of connected devices . 18
Table 2 – Current levels (RMS values) . 19
Table 3 – Thresholds for voltage indication . 24
Table 4 – Sequence of type tests . 30
Table 5 – List of type tests without sequence . 31
Table 6 – List of routine tests without sequence . 42

– 4 – IEC 62271-213:2021  IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 213: Voltage detecting and indicating system

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 62271-213 has been prepared by subcommittee 17C:Assemblies,
of IEC technical committee 17: High-voltage switchgear and controlgear.
This first edition cancels and replaces the first edition of IEC 61243-5 published in1997 and the
first edition of IEC 62271-206 published in 2011. This edition constitutes a merging of the
content of IEC 61243-5 and IEC 62271-206.
This edition includes the following significant technical changes with respect to the previous
editions of IEC 61243-5 and IEC 62271-206:
a) an optional output signal is defined to be used for multipurpose use cases;
b) only one interface is defined for voltage detecting and indicating system (VDIS);
c) the measurement of the current carrying capacity of the voltage limiting element is
considered as inaccurate and is not considered in this document. Experience shows that
the probability of failure of the coupling element is negligible.

IEC 62271-213:2021  IEC 2021 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
17C/787/FDIS 17C/794/RVD
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 International Standard is English .
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/standardsdev/publications.
In this document, the following print types are used:
• Terms defined in Clause 3: in italic type.
The reader's attention is drawn to the fact that Annex B lists all of the "in-some-country" clauses
on differing practices of a less permanent nature relating to the subject of this document.
A list of all parts in the IEC 62271 series, published under the general title High-voltage
switchgear and controlgear, can be found on the IEC website.
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.
– 6 – IEC 62271-213:2021  IEC 2021
INTRODUCTION
This part of IEC 62271 has been prepared in accordance with the requirements of IEC 62271-1.
The products designed and manufactured in accordance with this document contribute to the
safety of the users, provided they are used by skilled or instructed persons, in accordance with
safe methods of work and the instructions for use.
The product covered by this document can have an impact on the environment during some or
all stages of its life cycle. These impacts can range from slight to significant, be of short-term
or long-term duration, and occur at the global, regional or local level.
IEC 62271-213 does not cover the phase comparison function of IEC 61243-5 which is covered
by the new IEC 62271-215. Unless IEC 62271-215 is not published, the relevant subclauses in
IEC 61243-5 related to UPCs are applicable.

IEC 62271-213:2021  IEC 2021 – 7 –
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 213: Voltage detecting and indicating system

1 Scope
This part of IEC 62271 is applicable to the voltage detecting and indicating system (VDIS) to
be installed on indoor and outdoor high-voltage equipment.
The VDIS as defined by this document includes a coupling system per phase (capacitive,
resistive coupling or other technology) to connect to live parts (main circuit).
The VDIS is applicable on systems with nominal voltages above 1 kV and service frequencies
from 16,7 Hz up to and including 60 Hz. The VDIS is used to detect and indicate the presence
or absence of operating voltage. It is not intended to distinguish between voltage not present
(i.e. U < 10 % of nominal voltage) and dead circuit state (i.e. U = 0 V).
NOTE 1 The use of a specific means of connection to earth of the main circuit (e.g. by an earthing switch) provides
the "dead circuit" (U = 0 V) state.
NOTE 2 The VDIS has the same threshold values as the voltage presence indicating system (VPIS) (IEC 62271-
206) and the voltage detecting system (VDS) (IEC 61243-5) for not indicating presence of voltage and for detecting
an absence of operating voltage, respectively.
The VDIS is fixed on equipment such as switchgear and controlgear according to the IEC 62271
series or transformers according to their own standards.
The products designed and manufactured in accordance with this document contribute to the
safety of the users, provided they are used by skilled or instructed persons in accordance with
safe methods of work and the instructions for use.
2 Normative references
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.
IEC 60060-1, High-voltage test techniques – Part 1: General definitions and requirements
IEC 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-11, Basic environmental testing procedures – Part 2-11: Tests – Test Ka: Salt mist
IEC 60068-2-31, Environmental testing – Part 2-31: Tests – Test Ec: Rough handling shocks,
primarily for equipment-type specimens
IEC 60068-2-38, Environmental testing – Part 2-38: Tests – Test Z/AD: Composite
temperature/humidity cyclic test

– 8 – IEC 62271-213:2021  IEC 2021
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC 60352-1, Solderless connections – Part 1: Wrapped connections; general requirements,
test methods and practical guidance
IEC 60352-2, Solderless connections – Part 2: Solderless crimped connections – General
requirements, test methods and practical guidance
IEC 60352-5, Solderless connections – Part 5: Press-in connections – General requirements,
test methods and practical guidance
IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-
symbols.info/equipment)
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement
techniques – Electrostatic discharge immunity test
IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement
techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61010-031:2015, Safety requirements for electrical equipment for measurement, control
and laboratory use – Part 031: Safety requirements for hand-held probe assemblies for
electrical measurement and test
IEC 61010-031:2015/AMD1:2018
IEC 61210, Connecting devices – Flat quick-connect terminations for electrical copper
conductors – Safety requirements
IEC 62262, Degrees of protection provided by enclosures for electrical equipment against
external mechanical impacts (IK code)
IEC 62271-1, High-voltage switchgear and controlgear – Part 1: Common specifications for
alternating current switchgear and controlgear
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
active signal
audible or visual phenomenon of the VDIS whose presence, absence or variation is considered
as representing information on the condition “voltage present” or “voltage not present”

IEC 62271-213:2021  IEC 2021 – 9 –
[SOURCE: IEC 61243-1:2021 [15] , 3.2, modified – “of the VDIS” is added, the Note 1 to entry
is removed.]
3.2
adjustment element
part of the coupling system, connected to the earth, which is used to modify the signal of the
coupling element
Note 1 to entry: Different components can be used for the adjustment element, for example, capacitive, resistive,
or other.
3.3
connecting lead
element of the VDIS which provides electrical connection between the coupling element and all
other parts being used in the construction of the VDIS
Note 1 to entry: The other parts can be, for example, the testing points and connecting points, integrated indicator,
etc.
3.4
connecting point
rear accessible point of the VDIS which provides access to the signal
3.5
coupling element
part of the coupling system which establishes the connection with the main circuit
Note 1 to entry: Different physical principles can be used for the coupling element, for example, capacitive or
resistive.
3.6
coupling system
part of the VDIS connected between the main circuit and earth, which transmits a signal to the
indicating element
Note 1 to entry: The coupling system is generally designed as a voltage divider.
3.7
equipment
single apparatus or set of devices or apparatuses, or the set of main devices of an installation,
or all devices necessary to perform a specific task
Note 1 to entry: The VDIS is used to be fixed on equipment such as switchgear and controlgear as per the
IEC 62271 series or transformers according to their own standard.
[SOURCE: IEC 60050-151:2001 [1], 151-11-25, modified – the Note has been replaced by a
new Note 1.]
3.8
equivalent threshold voltage
U
et
value of the operating voltage at the main circuit in the case of a test, when the measuring
voltage has reached the threshold voltage
3.9
front
part of the VDIS accessible during functional operation
___________
Numbers in square brackets refer to the Bibliography.

– 10 – IEC 62271-213:2021  IEC 2021
3.10
indicator
part of the VDIS which indicates the voltage state of the main circuit
Note 1 to entry: The indicator can be an indicating element in case of an integrated VDIS or an indicating device in
case of a separated VDIS.
3.11
input impedance
X
c
impedance of the input circuit measured between the input terminals under normal operating
conditions
Note 1 to entry: The impedance can be expressed in terms of admittance.
Note 2 to entry: The impedance can be either linear or non-linear.
[SOURCE: IEC 60050-312:2001 [2], 312-06-18, modified – Note 2 is removed, Note 3 is
simplified and becomes Note 2, and the symbol "X " has been added.]
c
3.12
interface
boundary between two functional units, defined by functional characteristics, signal
characteristics, or other characteristics as appropriate
Note 1 to entry: Interfaces refer to testing point and connecting point characteristics.
[SOURCE: IEC 60050-351:2013 [3], 351-42-25, modified – the notes are replaced by a new
Note 1 to entry.]
3.13
main circuit (of an assembly)
all the conductive parts of an assembly included in a circuit which is intended to transmit
electrical energy
Note 1 to entry: In this document, the main circuit is at high voltage above 1 kV.
[SOURCE: IEC 60050-441:2000 [4], 441-13-02, modified – Note 1 is added.]
3.14
line-to-earth voltage
U
LE
voltage between a line conductor and reference earth at a given point of an electric circuit
[SOURCE: IEC 60050-826:2004 [8], 826-11-08, modified – the symbol "U " has been added.]
LE
3.15
maintenance test
test carried out periodically on an item to verify that its performance remains within specified
limits, after having made certain adjustments, if necessary
[SOURCE: IEC 60050-151:2001 [1], 151-16-25]
3.16
measuring voltage
U
m
value of the voltage measured at the testing point or the connecting point if it exists

IEC 62271-213:2021  IEC 2021 – 11 –
3.17
mid-point earthed single-phase system
type of single-phase power transmission system, which is mid-point earthed, for example at
secondary transformer output
Note 1 to entry: The nominal voltage of a mid-point earthed single-phase system is the voltage between phase to
phase with 180° between the phases.
3.18
nominal voltage
U
n
value of the voltage by which the electrical installation, part of the electrical installation or device
is designated and identified
Note 1 to entry: The nominal voltage of the VDIS is the parameter associated with its clear indication. The VDIS
can be used at one nominal voltage U , or at a nominal voltage range. Limit values of the nominal voltage range are
n
and U .
named U
n min n max
Note 2 to entry: In this document, the nominal voltage of a three-phase system is the phase-to-phase voltage. The
nominal voltage of a single-phase system is the voltage between phase and earth. The nominal voltage of a mid-
point earthed system is the voltage between phase to phase with a phase shift of 180° between the phases.
[SOURCE: IEC 60050-826:2004 [8], 826-11-01, modified – the entry has been modified,
removed “(of an electrical installation)”; added “device”, and the Notes have been added.]
3.19
normal operating condition
operating condition that represents as closely as possible the range of normal use that can
reasonably be expected
[SOURCE IEC 60050-903:2014 [9], 903-01-21]
3.20
operating voltage
value of the voltage under normal operating conditions, at a given instant and a given point of
the system
Note 1 to entry: This value can be expected, estimated or measured.
[SOURCE: IEC 60050-601:1985[6], 601-01-22, modified – replaced "normal conditions" with
"normal operating conditions".]
3.21
plug
accessory having pins designed to engage with the contacts of a socket-outlet, also
incorporating means for the electrical connection and mechanical retention of flexible cables or
cords
[SOURCE IEC 60050-442:1998 [5], 442-03-01]
3.22
power-frequency withstand voltage
RMS value of sinusoidal power-frequency voltage that the insulation of the given equipment
can withstand during tests made under specified conditions and for a specified duration
[SOURCE: IEC 60050-614:2016 [7], 614-03-22]

– 12 – IEC 62271-213:2021  IEC 2021
3.23
rated value
value of a quantity used for specification purposes, established for a specified set of operating
conditions of a component, device, equipment or system
[SOURCE: IEC 60050-151:2001 [1], 151-16-08]
3.24
rear
part of the VDIS supporting wiring which is not accessible during functional operation
3.25
routine test
conformity test made on each individual item during or after manufacture
[SOURCE: IEC 60050-151:2001 [1], 151-16-17]
3.26
single-pole earthed single-phase system
type of single-phase power transmission system, which is earthed on one pole, for example at
the secondary transformer output
3.27
socket-outlet
accessory having socket-contacts designed to engage with the pins of a plug and having
terminals for the connection of cables or cords
[SOURCE IEC 60050-442:1998 [5], 442-03-02]
3.28
testing element
built-in or external device of the VDIS, by means of which the functioning of the indicator and
the built-in power source (if present) can be checked by the user
3.29
testing point
front accessible socket-outlet of the VDIS, which provides access to the signal
3.30
threshold voltage
U
t
value of the measuring voltage corresponding to the change of state from the indication "voltage
not present" to the indication "voltage present"
Note 1 to entry: The minimum value of U is designated by U and the maximum by U .
t t min t max
3.31
type test
conformity test made on one or more items representative of the production
[SOURCE: IEC 60050-151:2001 [1], 151-16-16]
3.32
voltage detecting and indicating system
VDIS
device used to detect and indicate the presence or absence of operating voltage and to deliver
a signal for other functions
IEC 62271-213:2021  IEC 2021 – 13 –
Note 1 to entry: The other functions can be, for example, phase comparison or voltage measurement.
3.33
voltage limiting element
element that limits the voltage at testing points and connecting points if they exist, in case of
failure of the coupling system
4 Normal and special service conditions
4.1 General
Normal and special service conditions, according to IEC 62271-1:2017, Clause 4, are not
applicable in this document and are replaced by the following.
Unless otherwise specified, the VDIS is intended to be used in accordance with its rated
characteristics and the normal service conditions listed hereafter.
4.2 Normal service conditions
For VDIS installed on indoor and outdoor equipment, the normal service conditions are as
follows:
a) the ambient air temperature is between – 25 °C and + 40 °C;
b) there is no influence from solar radiation;
c) the altitude does not exceed 1 000 m;
d) the average value of the relative humidity, measured over a period of 24 h, does not exceed
95 %;
NOTE Condensation can be expected where sudden temperature changes occur in periods of high humidity.
e) the vibrations due to external causes to the equipment on which the VDIS is mounted do
not exceed vibrations caused by operation of the equipment itself;
f) some pollution of the ambient air surrounding the VDIS, such as salt mist, can be expected.
4.3 Special service conditions
When special service conditions prevail at the location where the VDIS is installed, they should
be specified by the user.
For example, for outdoor conditions defined IEC 62271‑1:2017, 4.1.3, an additional protection
may be provided such as an enclosure.
5 Ratings
The following ratings of the VDIS shall be in accordance with the common ratings of switchgear
and controlgear given in IEC 62271-1, or other equipment on which it is mounted.
– The voltage rated value (U ) of the VDIS shall be the same as the rated voltage value of the
r
equipment on which it is mounted, and in accordance with IEC 62271-1:2017, 5.2.
– The rated insulation level (U , U , and U where applicable) of the VDIS shall be in
p d s
accordance with IEC 62271-1:2017, 5.3, and shall be the same or higher than the rated
insulation level of the equipment on which the VDIS is fixed.
– The preferred rated values of the frequency of the VDIS are 16,7 Hz, 25 Hz, 50 Hz, 60 Hz.
In addition, the nominal voltage, or nominal voltage range (U , U ), of the system on
n min n max
which the VDIS can be used, shall be defined.

– 14 – IEC 62271-213:2021  IEC 2021
6 Design and construction
6.1 General
The VDIS shall indicate the presence or absence of operating voltage and deliver an interface
signal for other functions at a testing point and optionally at a connecting point. The VDIS shall
be designed to provide this indication at
– AC nominal voltage or AC nominal voltage range;
– rated frequency value in accordance with Clause 5 or the rated frequency range, for example
from 16,7 Hz to 60 Hz.
6.2 Parts of voltage detecting and indicating system
A VDIS shall include for each phase:
– a coupling system (see 6.4);
– a voltage limiting element (see 6.5);
– an indicator (see 6.9);
– a testing point (see 6.7);
– a connecting lead (see 6.6);
– as an option, a connecting point (see 6.8).
A VDIS may be used with or without an internal power source supply (see 6.15).
6.3 VDIS description
6.3.1 General
VDIS are classified into:
– integrated systems in which all parts are fixed and form an integral part of the equipment in
which they are installed;
– separable systems in which all parts are fixed except the indicator which is portable and can
be connected to the testing point.
6.3.2 Integrated VDIS
The coupling system, the voltage limiting element, the indicator, the front accessible testing
point and the optional rear accessible connecting point shall be fixed and form an integral part
of the high voltage equipment (see Figure 1 for an example of typical structure).

IEC 62271-213:2021  IEC 2021 – 15 –

Key
1 Main circuit 4 Voltage limiting element
2 Voltage detecting and indicating system 5 Indicator
3 Coupling system 6 Testing point (including earthing socket-outlet)
3a Coupling element 7 Connecting point (optional)
3b Adjustment element (optional)

Figure 1 – Example of the typical structure of an integrated VDIS
6.3.3 Separable VDIS
The coupling system,
...