EN 61850-3:2014

SLOVENSKI STANDARD
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Communication networks and systems for power utility automation - Part 3: General
requirements
/
Réseaux et systèmes de communication pour l'automatisation des systèmes électriques
- Partie 3: Exigences générales
Ta slovenski standard je istoveten z: EN 61850-3:2014
ICS:
29.240.30 Krmilna oprema za Control equipment for electric
elektroenergetske sisteme power systems
33.200 Daljinsko krmiljenje, daljinske Telecontrol. Telemetering
meritve (telemetrija)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61850-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2014
ICS 33.200 Supersedes EN 61850-3:2002
English Version
Communication networks and systems for power utility
automation - Part 3: General requirements
(IEC 61850-3:2013)
Réseaux et systèmes de communication pour Kommunikationsnetze und -systeme für die
l'automatisation des systèmes électriques - Partie 3: Automatisierung in der elektrischen Energieversorgung -
Exigences générales Teil 3: Allgemeine Anforderungen
(CEI 61850-3:2013) (IEC 61850-3:2013)
This European Standard was approved by CENELEC on 2014-01-16. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61850-3:2014 E
Foreword
The text of document 57/1391/FDIS, future edition 2 of IEC 61850-3, prepared by IEC/TC 57 "Power
systems management and associated information exchange" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 61850-3:2014.

The following dates are fixed:
(dop) 2014-10-18
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-01-16
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61850-3:2002.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61850-3:2013 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 60127-1 NOTE  Harmonized as EN 60127-1.
IEC 60255-27:2005 NOTE  Harmonized as EN 60255-27:2005 (not modified).
IEC 60297-3-101 NOTE  Harmonized as EN 60297-3-101.
IEC 60721-3-3 NOTE  Harmonized as EN 60721-3-3.

- 3 - EN 61850-3:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

CISPR 22 2008 Information technology equipment - Radio EN 55022 2010
1)
disturbance characteristics - Limits and + AC:2011 2011
methods of measurement
CISPR 24 2010 Information technology equipment - Immunity EN 55024 2010
+ corr. June 2011 characteristics - Limits and methods of
measurement
EN 60068-2-1 2007 Environmental testing -
Part 2-1: Tests - Test A: Cold

IEC 60068-2-2 2007 Environmental testing - EN 60068-2-2 2007
Part 2-2: Tests - Test B: Dry heat

IEC 60068-2-14 2009 Environmental testing - EN 60068-2-14 2009
Part 2-14: Tests - Test N: Change of
temperature
IEC 60068-2-30 2005 Environmental testing - EN 60068-2-30 2005
Part 2-30: Tests - Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
2)
IEC 60068-2-78 2001 Environmental testing - EN 60068-2-78 2001
Part 2-78: Tests - Test Cab: Damp heat,
steady state
IEC 60255-21-1 Electrical relays - EN 60255-21-1
Part 21: Vibration, shock, bump and seismic
tests on measuring relays and protection
equipment - Section 1: Vibration tests
(sinusoidal)
IEC 60255-21-2 Electrical relays - EN 60255-21-2
Part 21: Vibration, shock, bump and seismic
tests on measuring relays and protection
equipment - Section 2: Shock and bump tests

IEC 60255-21-3 Electrical relays - EN 60255-21-3
Part 21: Vibration, shock, bump and seismic
tests on measuring relays and protection
equipment - Section 3: Seismic tests

IEC 60255-27 2013 Measuring relays and protection equipment - EN 60255-27 2014
Part 27: Product safety requirements

1)
EN 55022 is superseded by EN 50561-1:2013, which is based on .
2)
EN 60068-2-78 is superseded by EN 60068-2-78:2013, which is based on IEC 60068-2-78:2012.

Publication Year Title EN/HD Year
3) 4)
IEC 60417 data  HD 243 S12 1995
base
IEC 60529 Degrees of protection provided by enclosures - -
(IP Code)
IEC 60664-1 Insulation coordination for equipment within EN 60664-1
low-voltage systems -
Part 1: Principles, requirements and tests

IEC 60695-11-10 Fire hazard testing - EN 60695-11-10
Part 11-10: Test flames - 50 W horizontal and
vertical flame test methods
IEC 60825-1 Safety of laser products - EN 60825-1
Part 1: Equipment classification and
requirements
IEC 60990 1999 Methods of measurement of touch current and EN 60990 1999
protective conductor current
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - EN 61000-4-2 2009
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test
IEC 61000-4-3 2008 Electromagnetic compatibility (EMC) -
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

5)
IEC 61000-4-4 2004 Electromagnetic compatibility (EMC) - EN 61000-4-4 2004
+ corr. June 2007 Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) - EN 61000-4-5 2006
+ corr. October 2009 Part 4-5: Testing and measurement
techniques - Surge immunity test

6)
IEC 61000-4-6 2008 Electromagnetic compatibility (EMC) - EN 61000-4-6 2009
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-4-8 2001 Electromagnetic compatibility (EMC) -
Part 4-8: Testing and measurement
techniques - Power frequency magnetic field
immunity test
IEC 61000-4-11 2004 Electromagnetic compatibility (EMC) - EN 61000-4-11 2004
Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations immunity tests

IEC 61000-4-16 2002 Electromagnetic compatibility (EMC) -
Part 4-16: Testing and measurement
techniques - Test for immunity to conducted,
common mode disturbances in the frequency
range 0 Hz to 150 kHz
3)
HD 243 S12 includes supplement(s) M to K to IEC 60417.
4)
HD 243 S12 is superseded by EN 60417-2:1999, which is based on IEC 60417-2:1998.
5)
EN 61000-4-4 is superseded by EN 61000-4-4:2012, which is based on IEC 61000-4-4:2012.
6)
EN 61000-4-6 is superseded by EN 61000-4-6:2014, which is based on IEC 61000-4-6:2013.

- 5 - EN 61850-3:2014
Publication Year Title EN/HD Year
IEC 61000-4-17 2009 Electromagnetic compatibility (EMC) - - -
Part 4-17: Testing and measurement
techniques - Ripple on d.c. input power port
immunity test
IEC 61000-4-18 2006 Electromagnetic compatibility (EMC) - EN 61000-4-18 2007
Part 4-18: Testing and measurement + corr. September 2007
techniques - Damped oscillatory wave
immunity test
IEC 61000-4-29 2000 Electromagnetic compatibility (EMC) - EN 61000-4-29 2000
Part 4-29: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations on d.c. input power port
immunity tests
IEC 61010-1 2010 Safety requirements for electrical equipment EN 61010-1 2010
+ corr. May 2011 for measurement, control and laboratory use -
Part 1: General requirements
IEC 61180-1 1992 High-voltage test techniques for low-voltage EN 61180-1 1994
equipment -
Part 1: Definitions, test and procedure
requirements
IEC 61180-2 High-voltage test techniques for low-voltage EN 61180-2
equipment -
Part 2: Test equipment
IEC/TS 61850-2 2003 Communication networks and systems in
substations -
Part 2: Glossary
IEC 61850 (Series) Communication networks and systems in EN 61850 (Series)
substations -
Part 6: Configuration description language for
communication in electrical substations
related to IEDs
IEC 62271-1 High-voltage switchgear and controlgear - EN 62271-1
Part 1: Common specifications
IEEE 1613 2009 IEEE Standard Environmental and Testing
Requirements for Communications
Networking Devices Installed in Electric Power
Substations
ISO 780 1997 Packaging - Pictorial marking for handling of EN ISO 780 1999
goods
ISO 7000 Graphical symbols for use on equipment -
Registered symbols
ISO 9772 Cellular plastics - Determination of horizontal
burning characteristics of small specimens
subjected to a small flame
IEC 61850-3 ®
Edition 2.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Communication networks and systems for power utility automation –

Part 3: General requirements
Réseaux et systèmes de communication pour l'automatisation

des systèmes électriques –
Partie 3: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 33.200 ISBN 978-2-8322-1216-5

– 2 – 61850-3 © IEC:2013
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 20
4 Environmental conditions . 20
4.1 General . 20
4.2 Normal environmental conditions . 20
4.3 Special environmental conditions . 21
4.4 Storage conditions . 22
5 Ratings . 22
5.1 General . 22
5.2 Rated voltage – Auxiliary energizing voltage . 22
5.2.1 AC voltage . 22
5.2.2 DC voltage. 22
5.2.3 Operating range . 22
5.3 Binary input and output . 22
5.3.1 Binary input . 22
5.3.2 Binary output . 22
5.4 Rated burden . 22
5.5 Rated ambient temperature . 22
6 Design and construction . 23
6.1 Marking . 23
6.1.1 General . 23
6.1.2 Identification . 23
6.1.3 Auxiliary supplies, I/O . 23
6.1.4 Fuses . 24
6.1.5 Terminals and operating devices . 25
6.1.6 Equipment protected by double or reinforced insulation . 25
6.1.7 Batteries . 26
6.1.8 Test voltage marking . 27
6.1.9 Warning markings . 28
6.1.10 Marking durability . 29
6.2 Documentation . 29
6.2.1 General . 29
6.2.2 Equipment ratings . 29
6.2.3 Equipment installation . 30
6.2.4 Equipment commissioning and maintenance . 31
6.2.5 Equipment operation . 31
6.3 Packaging . 31
6.3.1 General . 31
6.3.2 Marking of packaging . 32
6.4 Dimensions . 32
6.5 Functional performance requirements . 32
6.6 Product safety requirements . 32

61850-3 © IEC:2013 – 3 –
6.6.1 Clearances and creepage distances . 32
6.6.2 IP rating . 34
6.6.3 Impulse voltage . 34
6.6.4 AC or d.c. dielectric voltage test . 36
6.6.5 Protective bonding resistance . 39
6.6.6 Flammability of insulation materials, components and fire
enclosure . 39
6.6.7 Single-fault condition . 41
6.7 Electromagnetic compatibility (EMC) . 44
6.7.1 General . 44
6.7.2 Electromagnetic environment . 45
6.7.3 Immunity requirements and type tests . 45
6.7.4 Emission requirements and type tests . 54
6.8 Burden test . 55
6.8.1 Burden for AC power supply . 55
6.8.2 Burden for DC power supply . 55
6.8.3 Burden for binary input . 55
6.9 Climatic performance . 55
6.9.1 General . 55
6.9.2 Verification procedure . 56
6.9.3 Climatic environmental tests . 57
6.10 Mechanical performance . 61
6.10.1 Vibration response and endurance (sinusoidal) . 61
6.10.2 Shock response, shock withstand and bump . 61
6.10.3 Seismic . 61
6.11 Enclosure protection . 62
7 Tests . 62
7.1 General . 62
7.2 Test reference conditions . 62
7.3 Device reliability classes . 62
7.4 Communication conditions during tests . 62
7.5 Conditions to be met (acceptance criteria) . 63
7.5.1 General . 63
7.5.2 Conditions to be met by class 1 and class 2 devices . 63
7.5.3 Additional condition to be met by class 1 devices . 63
7.5.4 Additional condition to be met by class 2 devices . 63
7.5.5 Equipment functioning . 64
7.5.6 Exceptions . 64
7.6 Test overview. 64
7.7 Test report content . 65
8 Marking, labelling and packaging . 66
9 Rules for transport, storage, installation, operation and maintenance . 66
10 Product documentation . 66
Bibliography . 67

Figure 1 – Example of power station and substation: selection of the specifications for
apparatus and related connections . 47
Figure 2 – Example air-insulated substation (AIS): selection of the specifications for
apparatus and related connections . 49

– 4 – 61850-3 © IEC:2013
Table 1 – Normal environmental conditions . 21
Table 2 – Special environmental conditions . 21
Table 3 – Symbols . 26
Table 4 – Symbols and marking of test voltage(s) . 28
Table 5 – Current levels in normal operational condition . 34
Table 6 – Charge of energy of capacitance levels . 34
Table 7 – AC test voltages . 38
Table 8 – Current levels in single fault condition . 44
Table 9 – Immunity specification – Enclosure port . 49
Table 10 – Immunity specifications – Signal ports . 50
Table 11 – Immunity specifications – Low voltage a.c. input power ports and low
voltage a.c. output power ports . 51
Table 12 – Immunity specifications – Low voltage d.c. input power ports and low
voltage d.c. output power ports . 52
Table 13 – Immunity specifications – Functional earth port . 53
Table 14 – Emission tests – Auxiliary power supply port . 54
Table 15 – Emission tests – Telecommunication port . 54
Table 16 – Emission tests below 1 GHz – Enclosure port at a measuring distance of
10 m . 54
Table 17 – Emission tests above 1 GHz – Enclosure port at a measuring distance of
3 m . 54
Table 18 – Dry heat test operational . 57
Table 19 – Cold test operational . 58
Table 20 – Dry heat test maximum storage temperature . 58
Table 21 – Cold test minimum storage temperature . 59
Table 22 – Change of temperature test . 59
Table 23 – Damp heat steady state test . 60
Table 24 – Damp heat cyclic test . 61
Table 25 – Test reference conditions . 62
Table 26 – Device communications profiles (conditions) during tests for Ethernet
equipment with specified ranges of frame size (for example, an Ethernet switch) . 63
Table 27 – Device communications profiles (conditions) during tests for serial devices
without specified ranges of frame size (for example, serial media converters) . 63
Table 28 – Test overview . 64

61850-3 © IEC:2013 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 3: General requirements
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 61850-3 has been prepared by IEC technical committee 57: Power
systems management and associated information exchange system.
This second edition cancels and replaces the first edition published in 2002. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) requirements are in line with those of other equipment used in the same environment (e.g.
protection relays);
b) product safety added based on IEC 60255-27;
c) EMC requirements completed and in line with IEC 60255 series and IEC 61000-6-5.

– 6 – 61850-3 © IEC:2013
The text of this standard is based on the following documents:
FDIS Report on voting
57/1391/FDIS 57/1416/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this standard, the following print types are used:
– compliance statements: in italic type;
– markings: in bold type and caps.
A list of all parts in the IEC 61850 series, published under the general title Communication
networks and systems for power utility automation, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
61850-3 © IEC:2013 – 7 –
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 3: General requirements
1 Scope
This part of IEC 61850 defines the general requirements, mainly regarding construction,
design and environmental conditions for utility communication and automation IEDs and
systems in power plant and substation environments. These general requirements are in line
with requirements for IEDs used in similar environments, for example measuring relays and
protection equipment.
When communication or automation IEDs are an integral part of another device in the power
plant or substation, then the environmental requirements for the device itself apply to the
communications equipment.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
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 60068-2-14:2009, Environmental testing – Part 2-14: Tests – Test N: Change of
temperature
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60068-2-78:2001, Environmental testing – Part 2-78: Tests – Test Cab: Damp
heat,steady state
IEC 60255-21-1, Electrical relays – Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment – Section 1: Vibration tests (sinusoidal)
IEC 60255-21-2, Electrical relays – Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment – Section 2: Shock and bump tests
IEC 60255-21-3, Electrical relays – Part 21: Vibration, shock, bump and seismic tests on
measuring relays and protection equipment – Section 3: Seismic tests
IEC 60255-27:2013, Measuring relays and protection equipment – Part 27: Product safety
requirements
IEC 60417, Graphical symbols for use on equipment. Available from symbols.info/equipment>
– 8 – 61850-3 © IEC:2013
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60695-11-10, Fire hazard testing – Part 11-10: Test flames – 50 W horizontal and vertical
flame test methods
IEC 60825-1, Safety of laser products – Part 1: Equipment classification and requirements
IEC 60990:1999, Methods of measurement of touch current and protective conductor current
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2008, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measure-
ment techniques – Surge immunity test
IEC 61000-4-6:2008, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2001, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measure-
ment techniques – Voltage dips, short interruptions and voltage variations immunity tests
IEC 61000-4-16:2002, Electromagnetic compatibility (EMC) – Part 4-16: Testing and measure-
ment techniques – Test for immunity to conducted, common mode disturbances in the
frequency range 0 Hz to 150 kHz
IEC 61000-4-17:2009, Electromagnetic compatibility (EMC) – Part 4-17: Testing and measure-
ment techniques – Ripple on d.c. input power port immunity test
IEC 61000-4-18:2006, Electromagnetic compatibility (EMC) – Part 4-18: Testing and measure-
ment techniques – Damped oscillatory wave immunity test
IEC 61000-4-29:2000, Electromagnetic compatibility (EMC) – Part 4-29: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations on d.c.
input power port immunity tests
IEC 61010-1:2010, Safety requirements for electrical equipment for measurement, control and
laboratory use – Part 1: General requirements
IEC 61180-1:1992, High-voltage test techniques for low voltage equipment – Part 1:
Definitions, test and procedure requirements
IEC 61180-2, High-voltage test techniques for low-voltage equipment – Part 2: Test
equipment
61850-3 © IEC:2013 – 9 –
IEC 61850 (all parts), Communication networks and systems in substations
IEC/TS 61850-2:2003, Communication networks and systems in substations – Part 2:
Glossary
IEC 62271-1, High-voltage switchgear and controlgear – Part 1: Common specifications
CISPR 22:2008, Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement
CISPR 24:2010, Information technology equipment – Immunity characteristics – Limits and
methods of measurement
ISO 780:1997, Packaging – Pictorial marking for handling of goods
ISO 7000, Graphical symbols for use on equipment – Registered symbols. Available from

ISO 9772, Cellular plastics – Determination of horizontal burning characteristics of small
specimens subjected to a small flame
IEEE 1613:2009, IEEE standard environmental and testing requirements for communications
networking devices installed in electric power substations
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61850-2, as well as
the following, apply.
3.1.1
accessible part
part which can be touched in normal operational use with a standard rigid or jointed test finger
as specified in IEC 60529
Note 1 to entry: Accessible in normal operational use applies mainly to the front of the equipment only, for the
purposes of this standard.
Note 2 to entry: A communication circuit/network, which may be connected and taken outside of the cubicle
housing, the equipment, or on the front of the panel without the need to open a cover or flap to access it, should be
considered to be accessible, i.e. should be PEB, PELV, SELV or equivalent.
[SOURCE: IEC 60050-442:1998, 442-01-15, modified — Notes 1 and 2 to entry have been
added.]
3.1.2
adjacent circuits
electric circuits which are separated from the considered circuit by the necessary basic or
double/reinforced insulation
Note 1 to entry: Circuits which are separated by far more than double or reinforced insulation are not considered
to be adjacent.
[SOURCE: IEC 60255-27:2013, 3.2]

– 10 – 61850-3 © IEC:2013
3.1.3
ambient air temperature
temperature, determined under prescribed conditions, of the air surrounding the complete
equipment
Note 1 to entry: For equipment installed inside an enclosure, it is the temperature of the air outside the enclosure.
Note 2 to entry: The ambient temperature is measured at half the distance from any neighbouring equipment, but
not more than 300 mm distance from the equipment case, at middle height of the equipment, protected from direct
heat radiation from the equipment.
[SOURCE: IEC 60255-27:2013, 3.3]
3.1.4
automation
automation system
use of control systems and information technologies to reduce the need for human work in the
production, transportation and distribution of energy
3.1.5
barrier
electrically protective barrier
part providing protection against direct contact from any usual direction of access
Note 1 to entry: Barriers may provide protection against the spread of fire (see Clause 7).
[SOURCE: IEC 60050-826:2004, 826-12-23, modified — Note 1 to entry has been added.]
3.1.6
basic insulation
insulation of hazardous live parts which provides basic protection
Note 1 to entry: This concept does not apply to insulation used exclusively for functional purposes.
[SOURCE: IEC 60050-826:2004, 826-12-14]
3.1.7
bounding surface
outer surface of the equipment case, considered as though metal foil were pressed into
contact with accessible surfaces of insulating material
[SOURCE: IEC 60255-27:2013, 3.6]
3.1.8
class I equipment
equipment with basic insulation as provision for basic protection against electric shock and
protective bonding as provision for fault protection, such that conductive parts on the outside
of the equipment case, cannot become live in the event of a failure of the basic insulation
[SOURCE: IEC 60255-27:2013, 3.7]
3.1.9
class II equipment
equipment with
• basic insulation as provision for basic protection against electric shock, and
• supplementary insulation as provision for fault protection; or
• in which basic protection and fault protection are provided by reinforced insulation

61850-3 © IEC:2013 – 11 –
Note 1 to entry: There should be no provision for a protective conductor or reliance upon installation conditions
for safety purposes. It is, however, permissible to connect an earth/ground conductor to Class II equipment for
functional (for example, EMC) purposes.
[SOURCE: IEC 60255-27:2013, 3.8]
3.1.10
class III equipment
equipment, or parts of an equipment, in which protection against electric shock relies upon
supply from SELV or PELV circuits and in which hazardous voltages are not generated
[SOURCE: IEC 60255-27:2013, 3.9]
3.1.11
clearance
shortest distance, measured in air, between two conductive parts, or between a conductive
part and the outer bounding surface of the equipment, whether conductive or not
[SOURCE: IEC 60255-27:2013, 3.10]
3.1.12
comparative tracking index
CTI
numerical value of the maximum voltage in volts which a material can withstand without
tracking under specified test conditions
[SOURCE: IEC 60050-212:2010, 212-11-59]
3.1.13
communication circuit
communication network
circuit/network for receiving and/or transmitting, digital or analogue signals
Note 1 to entry: It may communicate with other circuits via optical, magnetic or electromagnetic radiation means,
or metallic connections.
[SOURCE: IEC 60255-27:2013, 3.12]
3.1.14
creepage distance
shortest distance along the surface of a solid insulating material between two conductive
parts, or between a conductive part and the bounding surface (accessible part) of the
equipment, measured along the surface of insulation
[SOURCE: IEC 60050-151:2001, 151-15-50, modified — "or between a conductive part and
the bounding surface (accessible part) of the equipment, measured along the surface of
insulation" has been added.]
3.1.15
direct contact
electrical contact of persons with live parts
[SOURCE: IEC 60050-826:2004, 826-03-05, modified — "or animals" has been deleted.]
3.1.16
double insulation
insulation comprising both basic insulation and supplementary insulation

– 12 – 61850-3 © IEC:2013
Note 1 to entry: Basic and supplementary insulation are separate, each designed for basic protection against
electric shock.
[SOURCE: IEC 60050-195:1998, 195-06-08, modified — Note 1 to entry has been added.]
3.1.17
ELV
extra low voltage
non-primary circuits complying with the following under normal operational conditions:
• not exceeding 33 V r.m.s. a.c. or 70 V d.c. i.e. ELV voltage limits, and
• separated from HLV by at least basic insulation
EXAMPLE 1 Non-primary circuits.
EXAMPLE 2 Analogue/digital inputs and outputs, complying with ELV voltage limits.
EXAMPLE 3 Connections to ELV terminations of other products.
Note 1 to entry: ELV circuits should not be accessible under normal operational conditions.
[SOURCE: IEC 60255-27:2013, Table A.1]
3.1.18
enclosure
housing affording the type and degree of protection suitable for the intended application
[SOURCE: IEC 60050-195:1998, 195-02-35]
3.1.19
equipment
single apparatus or set of devices or apparatuses, or a set of main devices of an installation,
or all devices necessary to perform a specific task
Note 1 to entry: Examples of equipment are a power tra
...