EN 61850-7-3:2011

SLOVENSKI STANDARD
01-maj-2011
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Communication networks and systems for power utility automation - Part 7-3: Basic
communication structure - Common data classes (IEC 61850-7-3:2010)
Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen
Energieversorgung - Teil 7-3: Grundlegende Kommunikationsstruktur - Gemeinsame
Datenklassen (IEC 61850-7-3:2010)
Réseaux et systèmes de communication pour l'automatisation des systèmes électriques
- Partie 7-3: Structure de communication de base - Classes de données communes (CEI
61850-7-3:2010)
Ta slovenski standard je istoveten z: EN 61850-7-3:2011
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 61850-7-3
NORME EUROPÉENNE
February 2011
EUROPÄISCHE NORM
ICS 33.200 Supersedes EN 61850-7-3:2003

English version
Communication networks and systems for power utility automation -
Part 7-3: Basic communication structure -
Common data classes
(IEC 61850-7-3:2010)
Réseaux et systèmes de communication Kommunikationsnetze und -systeme für
pour l'automatisation des systèmes die Automatisierung in der elektrischen
électriques - Energieversorgung -
Partie 7-3: Structure de communication de Teil 7-3: Grundlegende
base - Kommunikationsstruktur -
Classes de données communes Gemeinsame Datenklassen
(CEI 61850-7-3:2010) (IEC 61850-7-3:2010)

This European Standard was approved by CENELEC on 2011-01-20. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61850-7-3:2011 E
Foreword
The text of document 57/1087/FDIS, future edition 2 of IEC 61850-7-3, prepared by IEC TC 57, Power
systems management and associated information exchange, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 61850-7-3 on 2010-12-07.
This European Standard supersedes EN 61850-7-3:2003.
Compared to EN 61850-7-3:2003, this edition:
– defines new common data classes used for new standards defining object models for other domains
based on EN 61850 and for the representation of statistical and historical data;
– provides clarifications and corrections to EN 61850-7-3:2003.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-09-07
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-12-07
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61850-7-3:2010 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 61850-8 series NOTE  Harmonized in EN 61850-8 series (not modified).
IEC 61850-9 series NOTE  Harmonized EN 61850-9 series (not modified).
__________
- 3 - EN 61850-7-3:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC/TS 61850-2 - Communication networks and systems in - -
substations -
Part 2: Glossary
IEC 61850-7-1 - Communication networks and systems in EN 61850-7-1 -
substations -
Part 7-1: Basic communication structure for
substation and feeder equipment - Principles
and models
IEC 61850-7-2 - Communication networks and systems for EN 61850-7-2 -
power utility automation -
Part 7-2: Basic information and
communication structure - Abstract
communication service interface (ACSI)

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
ISO 4217 - Codes for the representation of currencies - -
and funds
IEEE C37.118 2005 IEEE Standard for Synchrophasors for Power - -
Systems
IEC 61850-7-3 ®
Edition 2.0 2010-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Communication networks and systems for power utility automation –
Part 7-3: Basic communication structure – Common data classes

Réseaux et systèmes de communication pour l'automatisation des systèmes
électriques –
Partie 7-3: Structure de communication de base – Classes de données
communes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XD
CODE PRIX
ICS 33.200 ISBN 978-2-88912-258-5
– 2 – 61850-7-3 Ó IEC:2010
CONTENTS
FOREW ORD . 6
INTRODUCTION . 8
1 Sc o pe . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Abbreviated terms . 10
5 Conditions for attribute inclusion . 10
6 Constructed attribute classes . 11
6.1 General . 11
6.2 Quality . 11
6.2.1 Ov erv iew . 11
6.2.2 Validity . 12
6.2.3 Detail quality . 13
6.2.4 Source . 14
6.2.5 Test . 14
6.2.6 Frozen by operator . 14
6.2.7 Quality in the client server context . 15
6.2.8 Relation between quality identifiers . 16
6.3 Analogue value . 18
6.4 Configuration of analogue value . 18
6.5 Range configuration . 19
6.6 Step position with transient indication. 19
6.7 Pulse configuration. 20
6.8 Originator . 20
6.9 Unit definition . 21
6.10 Vector definition . 21
6.11 Point definition . 22
6.12 CtlModels definition . 22
6.13 SboClasses definition . 22
6.14 Cell. 22
6.15 CalendarTime definition . 23
7 Common data class specifications . 25
7.1 General . 25
7.2 Name spaces . 25
7.3 Common data class specifications for status information . 25
7.3.1 Application of services . 25
7.3.2 Single point status (SPS) . 26
7.3.3 Double point status (DPS) . 27
7.3.4 Integer status (INS) . 27
7.3.5 Enumerated status (ENS). 28
7.3.6 Protection activation information (ACT) . 28
7.3.7 Directional protection activation information (ACD) . 29
7.3.8 Security violation counting (SEC) . 30
7.3.9 Binary counter reading (BCR) . 30
7.3.10 Histogram (HST) . 31

61850-7-3 Ó IEC:2010 – 3 –
7.3.11 Visible string status (VSS). 31
7.4 Common data class specifications for measurand information . 32
7.4.1 Application of services . 32
7.4.2 Measured value (MV) . 33
7.4.3 Complex measured value (CMV) . 34
7.4.4 Sampled value (SAV) . 35
7.4.5 Phase to ground/neutral related measured values of a three-phase
system (WYE) . 36
7.4.6 Phase to phase related measured values of a three-phase system
(DEL) . 37
7.4.7 Sequence (SEQ) . 38
7.4.8 Harmonic value (HMV) . 39
7.4.9 Harmonic value for WYE (HWYE) . 40
7.4.10 Harmonic value for DEL (HDEL) . 41
7.5 Common data class specifications for controls . 42
7.5.1 Application of services . 42
7.5.2 Controllable single point (SPC) . 43
7.5.3 Controllable double point (DPC) . 44
7.5.4 Controllable integer status (INC) . 45
7.5.5 Controllable enumerated status (ENC) . 46
7.5.6 Binary controlled step position information (BSC) . 47
7.5.7 Integer controlled step position information (ISC) . 48
7.5.8 Controllable analogue process value (APC) . 49
7.5.9 Binary controlled analog process value (BAC) . 50
7.6 Common data class specifications for status settings . 51
7.6.1 Application of services . 51
7.6.2 Single point setting (SPG) . 51
7.6.3 Integer status setting (ING) . 52
7.6.4 Enumerated status setting (ENG) . 52
7.6.5 Object reference setting (ORG) . 53
7.6.6 Time setting group (TSG) . 53
7.6.7 Currency setting group (CUG) . 54
7.6.8 Visible string setting (VSG) . 54
7.7 Common data class specifications for analogue settings . 55
7.7.1 Application of services . 55
7.7.2 Analogue setting (ASG) . 56
7.7.3 Setting curve (CURVE) . 57
7.7.4 Curve shape setting (CSG) . 58
7.8 Common data class specifications for description information . 59
7.8.1 Application of services . 59
7.8.2 Device name plate (DPL) . 60
7.8.3 Logical node name plate (LPL) . 61
7.8.4 Curve shape description (CSD). 62
8 Data attribute semantic . 63
Annex A (normative) Value range for units and multiplier . 78
Annex B (informative) Functional constraints . 81
Annex C (normative) Tracking of configuration revisions . 83
Annex D (normative) SCL enumerations . 84

– 4 – 61850-7-3 Ó IEC:2010
Bibliography . 90

Figure 1 – Quality identifiers in a single client-server relationship . 15
Figure 2 – Quality identifiers in a multiple client-server relationship . 15
Figure 3 – Interaction of substitution and validity . 17
Figure 4 – Configuration of command output pulse . 20
Figure 5 – Cell definition . 23
Figure 6 – Two-dimensional curve represented by CSG . 58
Figure 7 – Two-dimensional shape created by multiple CSG . 59

Table 1 – Conditions for presence of attributes . 10
Table 2 – Quality . 12
Table 3 – Relation of the detailed quality identifiers with invalid or questionable quality . 13
Table 4 – Analogue value . 18
Table 5 – Configuration of analogue value . 18
Table 6 – Range configuration . 19
Table 7 – Step position with transient indication . 19
Table 8 – Pulse configuration . 20
Table 9 – Originator . 21
Table 10 – Values for orCat . 21
Table 11 – Unit . 21
Table 12 – Vector . 21
Table 13 – Point . 22
Table 14 – Cell . 23
Table 15 – CalendarTime . 24
Table 16 – Semantic interpretation of calendar time settings . 24
Table 17 – Name space attributes . 25
Table 18 – Basic status information template. 26
Table 19 – Single point status common data class definition . 26
Table 20 – Double point status common data class specification . 27
Table 21 – Integer status common data class specification . 27
Table 22 – Enumerated status common data class specification . 28
Table 23 – Protection activation information common data class specification. 28
Table 24 – Directional protection activation information common data class
specification. 29
Table 25 – Security violation counting common data class specification . 30
Table 26 – Binary counter reading common data class specification . 30
Table 27 – Histogram common data class specification . 31
Table 28 – Visible string status common data class definition . 31
Table 29 – Basic measurand information template . 32
Table 30 – Measured value . 33
Table 31 – Complex measured value . 34
Table 32 – Sampled value . 35

61850-7-3 Ó IEC:2010 – 5 –
Table 33 – WYE . 36
Table 34 – Delta . 37
Table 35 – Sequence . 38
Table 36 – Harmonic value . 39
Table 37 – Harmonic values for WYE . 40
Table 38 – Harmonic values for delta. 41
Table 39 – Basic controllable status information template . 42
Table 40 – Controllable single point. 43
Table 41 – Controllable double point . 44
Table 42 – Controllable integer status . 45
Table 43 – Controllable enumerated status . 46
Table 44 – Binary controlled step position information . 47
Table 45 – Integer controlled step position information . 48
Table 46 – Controllable analogue process value . 49
Table 47 – Binary controlled analog process value . 50
Table 48 – Basic status setting template . 51
Table 49 – Single point setting . 51
Table 50 – Integer status setting . 52
Table 51 – Enumerated status setting . 52
Table 52 – Object reference setting common data class specification . 53
Table 53 – Time setting group common data class specification . 53
Table 54 – Currency setting group common data class specification . 54
Table 55 – Visible string setting group common data class specification . 54
Table 56 – Basic analogue setting template . 55
Table 57 – Analogue setting . 56
Table 58 – Setting curve . 57
Table 59 – Curve shape setting. 58
Table 60 – Basic description information template . 59
Table 61 – Device name plate common data class specification . 60
Table 62 – Logical node name plate common data class specification . 61
Table 63 – Curve shape description common data class specification . 62
Table 64 – Semantics of data attributes and data. 63
Table A.1 – SI units: base units . 78
Table A.2 – SI units: derived units . 78
Table A.3 – SI units: extended units . 79
Table A.4 – SI units: industry specific units . 79
Table A.5 – Multiplier . 80
Table B.1 – Functional constraints . 82

– 6 – 61850-7-3 Ó IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 7-3: Basic communication structure –
Common data classes
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 61850-7-3 has been prepared by IEC technical committee 57:
Power systems management and associated information exchange.
This second edition cancels and replaces the first edition, published in 2003.
Compared to the first edition, this second edition:
· defines new common data classes used for new standards defining object models for
other domains based on IEC 61850 and for the representation of statistical and historical
data,
· provides clarifications and corrections to the first edition of IEC 61850-7-3.

61850-7-3 Ó IEC:2010 – 7 –
The text of this standard is based on the following documents:
FDIS RVD
57/1087/FDIS 57/1095/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.
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 general title of the series was Communication networks and systems in substations. To
address the extension of the scope of IEC 61850, it has been changed to Communication
networks and systems for power utility automation.
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 8 – 61850-7-3 Ó IEC:2010
INTRODUCTION
This document is part of a set of specifications, which details layered substation com-
munication architecture. This architecture has been chosen to provide abstract definitions of
classes and services such that the specifications are independent of specific protocol stacks
and objects. The mapping of these abstract classes and services to communication stacks is
outside the scope of IEC 61850-7-x and may be found in IEC 61850-8-x (station bus) and
IEC 61850-9-x (process bus).
IEC 61850-7-1 gives an overview of this communication architecture. This part of IEC 61850
defines constructed attributed classes and common data classes related to applications in the
power system using IEC 61850 modeling concepts like substations, hydro power or distributed
energy resources. These common data classes are used in IEC 61850-7-4 to define
compatible dataObject classes. The SubDataObjects, DataAttributes or SubAttributes of the
instances of dataObject are accessed using services defined in IEC 61850-7-2.
This part of IEC 61850 is used to specify the abstract common data class and constructed
attribute class definitions. These abstract definitions are mapped into concrete object
definitions that are to be used for a particular protocol (for example MMS, ISO 9506 series).
Note that there are common data classes used for service tracking, that are defined in
IEC 61850-7-2.
61850-7-3 Ó IEC:2010 – 9 –
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 7-3: Basic communication structure –
Common data classes
1 Scope
This part of IEC 61850 specifies constructed attribute classes and common data classes
related to substation applications. In particular, it specifies:
· common data classes for status information,
· common data classes for measured information,
· common data classes for control,
· common data classes for status settings,
· common data classes for analogue settings and
· attribute types used in these common data classes.
This International Standard is applicable to the description of device models and functions of
substations and feeder equipment.
This International Standard may also be applied, for example, to describe device models and
functions for:
· substation to substation information exchange,
· substation to control centre information exchange,
· power plant to control centre information exchange,
· information exchange for distributed generation, or
· information exchange for metering.
2 Normative references
The following referenced documents are indispensable for the application 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/TS 61850-2, Communication networks and systems in substations – Part 2: Glossary
IEC 61850-7-1, Communication networks and systems for power utility automation – Part 7-1:
Basic communication structure – Principles and models
IEC 61850-7-2, Communication networks and systems for power utility automation – Part 7-2:
Basic information and communication structure – Abstract communication service interface
(ACSI)
IEC 61850-7-4, Communication networks and systems for power utility automation – Part 7-4:
Basic communication structure – Compatible logical node classes and data object classes
———————
To be published.
– 10 – 61850-7-3 Ó IEC:2010
IEEE C37.118:2005, IEEE Standard for Synchrophasors for Power Systems
ISO 4217, Codes for the representation of currencies and funds
3 Terms and definitions
For the purposes of this document, the terms and definitions given in
IEC/TS 61850-2 and IEC 61850-7-2 apply.
4 Abbreviated terms
CDC common data class
dchg trigger option for data-change
dupd trigger option for data-update
FC functional constraint
qchg trigger option for quality-change
TrgOp trigger option
NOTE Abbreviations used for the identification of the common data classes and as names of the attributes are
specified in the specific clauses of this document and are not repeated here.
5 Conditions for attribute inclusion
This clause lists general conditions that specify the presence of an attribute. Table 1 gives the
conditions for presence of attributes.
Table 1 – Conditions for presence of attributes
Abbreviation Condition
M Attribute is mandatory. Attribute shall exist on any CDC type instance.
O Attribute is optional. Attribute may or may not exist on any CDC type instance.
PICS_SUBST Attribute is mandatory, if substitution is supported (for substitution, see IEC 61850-7-2),
otherwise forbidden.
GC_1 At least one of the attributes shall be present for a given instance of DataObject /
SubDataObject.
GC_2_n All or none of the data attributes belonging to the same group (n) shall be present for a
given instance of DataObject / SubDataObject.
GC_1_EXCL At most one of the data objects shall be present for a given instance.
GC_CON_attr A configuration data attribute shall only be present, if the (optional) specific data attribute
(attr) to which this configuration relates is also present.
GC_2_XOR_n
All or none of a group (n) shall be present. Groups are exclusive, but one group shall be
present.
AC_LN0_M
The attribute shall be present if the DataObject NamPlt belongs to LLN0; otherwise it may
be optional.
AC_LN0_EX
The attribute shall be present only if the DataObject NamPlt belongs to LLN0 (applies to
ldNs in CDC LPL only).
AC_DLD_M
The attribute shall be present, if LN name space of this LN deviates from the LN name
space referenced by ldNs of the logical device in which this LN is contained (applies to
lnNs in CDC LPL only).
AC_DLN_M
The attribute shall be present, if the data name space of this data deviates from the data
name space referenced by either lnNs of the logical node in which the data is contained or,
if there is no lnNs, ldNs of the logical device in which the data is contained (applies to
dataNs in all CDCs only).
AC_DLNDA_M
The attribute shall be present, if CDC name space of this data deviates from the CDC

61850-7-3 Ó IEC:2010 – 11 –
Abbreviation Condition
name space referenced by either the dataNs of the data, the lnNs of the logical node in
which the data is defined or ldNs of the logical device in which the data is contained
(applies to cdcNs and cdcName in all CDCs only).
AC_SCAV The presence of the configuration data attribute depends on the presence of i and f of the
Analog Value of the data attribute to which this configuration attribute relates. For a given
data object, that attribute
1) shall be present, if both i and f are present,
2) shall be optional if only i is present, and
3) is not required if only f is present.
NOTE If only i is present in a device without floating point capabilities, the configuration
parameter may be exchanged offline.
AC_ST The attribute is mandatory, if the controllable status class supports status information.
AC_CO_O If the controllable status class supports control, this attribute is available and an optional
attribute.
AC_CO_SBO If the controllable status class supports control and if the control model supports the
values "sbo-with-normal-security" or "sbo-with-enhanced-security" or both, that attribute
shall be mandatory.
AC_SG_M The attribute is mandatory, if this data shall be member of a setting group.
AC_SG_O The attribute is optional, if this data shall be member of a setting group.
AC_SG_C1 One of the attributes is mandatory, if this data shall be member of a setting group.
AC_NSG_M The attribute is mandatory, if this data shall be a setting outside a setting group.
AC_NSG_O The attribute is optional, if this data shall be a setting outside a setting group.
AC_NSG_C1 One of the attributes is mandatory, if this data shall be a setting outside a setting group.
AC_RMS_M The attribute is mandatory when the harmonics reference type is rms.
AC_CLC_O The attribute shall be optional, when the calculation type (according to data ClcMth) for
this LN is Peak fundamental or RMS fundamental. The attribute shall not be available, if
ClcMth is TRUE RMS.
6 Constructed attribute classes
6.1 General
Constructed attribute classes are defined for the use in common data classes (CDC) in
Clause 7.
IEC 61850-7-1 provides an overview of all IEC 61850-7 documents (IEC 61850-7-2,
IEC 61850-7-3, and IEC 61850-7-4). IEC 61850-7-1 also describes the basic notation used in
IEC 61850-7-3 and the description of the relations between the IEC 61850-7 documents.
NOTE The common ACSI type "TimeStamp" is specified in IEC 61850-7-2.
6.2 Quality
6.2.1 Overview
Quality type shall be as defined in Table 2.

– 12 – 61850-7-3 Ó IEC:2010
Table 2 – Quality
Quality type definition
Attribute name Attribute type Value/Value range M/O/C
PACKED LIST
validity CODED ENUM good | invalid | reserved | questionable M
detailQual PACKED LIST M
overflow BOOLEAN DEFAULT FALSE M
outOfRange BOOLEAN DEFAULT FALSE M
badReference BOOLEAN DEFAULT FALSE M
oscillatory BOOLEAN DEFAULT FALSE M
failure BOOLEAN DEFAULT FALSE M
oldData BOOLEAN DEFAULT FALSE M
inconsistent BOOLEAN DEFAULT FALSE M
inaccurate BOOLEAN DEFAULT FALSE M
source CODED ENUM process | substituted M
DEFAULT process
test BOOLEAN DEFAULT FALSE M
operatorBlocked BOOLEAN DEFAULT FALSE M

The DEFAULT value shall be applied, if the functionality of the related attribute is not
supported. The mapping may specify to exclude the attribute from the message, if it is not
supported or if the DEFAULT value applies.
Quality shall be an attribute that contains information on the quality of the information from
the server. Quality of the data is also related to the mode of a logical node. Further details
can be found in IEC 61850-7-4. The different quality identifiers are not independent. Basically,
there are the following quality identifiers:
· validity;
· detail quality;
· source;
· test;
· frozen by operator.
6.2.2 Validity
Validity shall be good, questionable or invalid.
good: The value shall be marked good if no abnormal condition of the acquisition function or
the information source is detected.
invalid: The value shall be marked invalid when an abnormal condition of the acquisition
function or the information source (missing or non-operating updating devices) is detected.
The value shall not be defined under this condition. The mark invalid shall be used to indicate
to the client that the value may be incorrect and shall not be used.
EXAMPLE If an input unit detects an oscillation of one input, it will mark the related information as invalid.
questionable: The value shall be marked questionable if a supervision function detects an
abnormal behaviour, however the value could still be valid. The client shall be responsible for
determining whether or not values marked "questionable" should be used.

61850-7-3 Ó IEC:2010 – 13 –
6.2.3 Detail quality
The reason for an invalid or questionable value of an attribute may be specified in more detail
with further quality identifiers. If one of these identifiers is set then validity shall be set to
invalid or questionable. Table 3 shows the relation of the detailed quality identifiers with
invalid or questionable quality.
Table 3 – Relation of the detailed quality identifiers with invalid or questionable quality
detailQual invalid questionable
overflow
X
outOfR
...