SIST EN 61850-7-4:2010/A1:2020

SLOVENSKI STANDARD
01-junij-2020
Komunikacijska omrežja in sistemi za avtomatizacijo porabe električne energije - 7
-4. del: Osnovna komunikacijska struktura - Združljivi logični vozliščni in
podatkovni razredi - Dopolnilo A1
Communication networks and systems for power utility automation - Part 7-4: Basic
communication structure - Compatible logical node classes and data object classes
Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen
Energieversorgung - Teil 7-4: Grundlegende Kommunikationsstruktur - Kompatible
Logikknoten- und Datenklassen
Réseaux et systèmes de communication pour lautomatisation des systèmes électriques -
Partie 7-4: Structure de communication de base - Classes de nud logique et classes de
donnée objet compatibles
Ta slovenski standard je istoveten z: EN 61850-7-4:2010/A1:2020
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 61850-7-4:2010/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 33.200
English Version
Communication networks and systems for power utility
automation - Part 7-4: Basic communication structure -
Compatible logical node classes and data object classes
(IEC 61850-7-4:2010/A1:2020)
Réseaux et systèmes de communication pour Kommunikationsnetze und -systeme für die
l'automatisation des systèmes électriques- Partie 7-4: Automatisierung in der elektrischen Energieversorgung -
Structure de communication de base - Classes de nœuds Teil 7-4: Grundlegende Kommunikationsstruktur -
logiques et classes d'objets de données compatibles Kompatible Logikknoten- und Datenklassen
(IEC 61850-7-4:2010/A1:2020) (IEC 61850-7-4:2010/A1:2020)
This amendment A1 modifies the European Standard EN 61850-7-4:2010; it was approved by CENELEC on 2020-03-18. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the
status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61850-7-4:2010/A1:2020 E

European foreword
The text of document 57/2102A/FDIS, future IEC 61850-7-4/A1, 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 61850-7-4:2010/A1:2020.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-12-18
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-03-18
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 61850-7-4:2010/A1:2020 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 61869-9:2016 NOTE Harmonized as EN IEC 61869-9:2019 (not modified)
IEC 62271-3:2015 NOTE Harmonized as EN 62271-3:2015 (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.
Add the following references:
Publication Year Title EN/HD Year
IEC/IEEE 61850-9-3 - Communication networks and systems for - -
power utility automation - Part 9-3: Precision
time protocol profile for power utility
automation
IEC/IEEE 61850-9-3 2016 Communication networks and systems for - -
power utility automation - Part 9-3: Precision
time protocol profile for power utility
automation
IEC/IEEE 60255-118-1 2018 Measuring relays and protection equipment - - -
Part 118-1: Synchrophasor for power
systems - Measurements
IEC 60255-24 2013 Measuring relays and protection equipment - - -
Part 24: Common format for transient data
exchange (COMTRADE) for power systems

Delete the following reference:
Publication Year Title EN/HD Year
IEEE 1588 - Precision clock synchronization protocol for - -
networked measurement and control
systems
IEC 61850-7-4 ®
Edition 2.0 2020-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 1
AM ENDEMENT 1
Communication networks and systems for power utility automation –

Part 7-4: Basic communication structure – Compatible logical node classes and

data object classes
Réseaux et systèmes de communication pour l'automatisation des systèmes

électriques –
Partie 7-4: Structure de communication de base – Classes de noeuds logiques

et classes d'objets de données compatibles

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322--7347-0

– 2 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
FOREWORD
This amendment has been prepared by IEC technical committee 57: Power systems
management and associated information exchange.
The motivation and goal of the amendment is to improve consistency of the data model over
all application domains of IEC 61850. Data (Logical Nodes, Data Objects, Data Attributes)
with the same semantics shall have the same naming where this part of IEC 61850 refers to
Logical Nodes and Data Objects and IEC 61850-7-3 to the Data Attributes.
Therefore, the amendement complements and updates the second edition of this part of
IEC 61850, which was published in 2010. It constitutes editorial revisions for consistency and
technical corrections of bugs as far as interoperability is touched.
To reach this goal and to keep it for all future as common working source a comprehensive
back-office UML version was created and will be maintained for future standard development.
The published parts of IEC 61850such as IEC 61850-7-4, on which the amendment is based,
are generated automatically from the UML version. This allows publishing, voting and reading
the various parts of IEC 61850-7 as in the past.
This amendment includes the following changes with respect to IEC 61850-7-4:2010:
• provides clarifications and corrections to the second edition of IEC 61850-7-4, based on
the tissues = {671, 672, 674, 675, 676, 677, 679, 680, 682, 683, 685, 686, 689, 693, 694,
695, 696, 712, 713, 714, 715, 716, 724, 725, 732, 734, 735, 736, 742, 743, 744, 748, 749,
772, 773, 774, 775, 776, 800, 802, 808, 819, 830, 831, 835, 838, 842, 843, 844, 849, 871,
877, 878, 879, 881, 882, 902, 908, 909, 910, 911, 912, 913, 920, 928, 932, 933, 937, 939,
940, 952, 967, 991, 1007, 1029, 1044, 1046, 1071, 1075, 1076, 1077, 1081, 1086, 1117,
1119, 1128, 1137, 1139, 1176, 1177, 1190, 1191, 1203, 1205, 1229, 1235, 1236, 1244,
1250, 1256, 1258, 1259, 1261, 1269, 1273, 1278, 1282, 1292, 1294, 1310, 1316, 1330,
1331, 1333, 1339, 1347, 1348, 1364, 1368, 1375, 1380, 1390, 1404, 1411, 1420, 1423,
1425, 1426, 1456, 1568};
• adds to each functional LN group a parent abstract Logical node where the functional
nodes are children from (full object oriented model). Since all abstract LNs are in a
common clause, the relative position of the functional LNs is not changed within their
clause.
• adds new abbreviated terms
• has extension of the list of abbreviate terms to be used for object names
• has more precise combination rules for abbreviated terms to object names
• has extensions by new logical nodes mainly from power quality domains and others
• has corrections of editorial errors.
Clauses 4 through 8 and their subclauses (except for 5.1, 5.2, and 5.3) and XML
enumerations from Annex H are automatically generated from the UML model.
The structure of the document has been changed for the following reasons:
– To split the description of logical nodes preliminaries (Clause 5) from logical node
specification (Clause 6). Some content of this clause has been moved from the previous
description of logical nodes (was in IEC 61850-7-4:2007(revision A – 5.1 and 5.2).
– To include abstract logical nodes. These abstract logical nodes have been described in
6.2.
– The specification of logical nodes begins with 6.3 (was in IEC 61850-7-4:2007 (revision A
– 5.3). In consequence all clauses in IEC 61850-7-4:2007 (revision A beginning with 5.3
count one number higher (beginning with 6.3) than they were in IEC 61850-7-4
(revision A).
IEC 61850-7-4:2010/AMD1:2020 – 3 –
 IEC 2020
– The description of data object semantics and enumerations starts with Clause 7. A new
clause has been included to specify the enumerations used in IEC 61850-7-4 separately.
Annex J and Annex K have been added.
The text of this amendment is based on the following documents:
FDIS Report on voting
57/2102A/FDIS 57/2133/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The content of this part of IEC 61850 is based on existing or emerging standards and
applications. In particular the definitions are based upon:
• the specific data objects types defined in IEC 60870-5-101 and IEC 60870-5-103;
• the common class definitions from the Utility Communication Architecture 2.0: Generic
Object Models for Substation and Feeder Equipment (GOMSFE) (IEEE TR 1550);
• CIGRE Report 34-03, Communication requirements in terms of data flow within
substations, December 1996.
A list of all parts of the IEC 61850 series under the general title Communication networks and
systems for power utility automation, can be found on the IEC website.
This IEC standard includes Code Components i.e. components that are intended to be directly
processed by a computer. Such content is any text found between the markers BEGINS> and , or otherwise is clearly labeled in this standard as a Code
Component. In the current version of this document, such indication is made at the beginning
of each concerned top-level clauses
The purchase of this IEC standard carries a copyright license for the purchaser to sell
software containing Code Components from this standard directly to end users and to end
users via distributors, subject to IEC software licensing conditions, which can be found at:
http://www.iec.ch/CCv1.
If any updates are required to the published code component that needs to apply immediately
and can not wait for an amendment (i.e. fixing a major problem), a new release of the Code
Component will be issued and distributed through the IEC WebSite. Any new release of the
Code Component related to this part will supersede any previously published Code
Component including the one published within the current document.
This publication contains attached nsd files which compose the Code Component of this part.
These files are intended to be used as a complement and do not form an integral part of this
standard.
– 4 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website 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.
_____________
IEC 61850-7-4:2010/AMD1:2020 – 5 –
 IEC 2020
1 Scope
1.1 General
Add a new subtitle 1.1 General before the first paragraph of the Scope.
Replace the last two bullet points of the fifth paragraph with the following new bullet points:
• information exchange for distribution energy resources,
• information exchange for metering,
• information exchanged for hydro power plants, or
• information exchange for wind generation plants.
Add the following new Subclauses 1.2 and 1.3 after the existing last paragraph of the Scope:
1.2 Namespace name and version
This new subclause is mandatory for any IEC 61850 namespace (as defined by IEC 61850-7-
1:2011).
The parameters which identify this new release of this namespace are:
• Namespace Version: 2007
• Namespace Revision: B
• Namespace name: “IEC 61850-7-4:B”
• Namespace release: 3
• Namespace release date: 2019-10-31
IEC 61850-7-4 depends on IEC 61850-7-3:2007B latest release.
The table below provides an overview of all published versions of this namespace.
Edition Publication date Webstore Namespace
Edition 1.0 2003-05 IEC 61850-7-4:2003 IEC 61850-7-4:2003
Edition 2.0 2010-03 IEC 61850-7-4:2010 IEC 61850-7-4:2007
Amendment 1 of Edition 2020-02 IEC 61850-7-4:2010/AMD1:2020 IEC 61850-7-4:2007B
2.0
Edition 2.1 2020-02 IEC 61850-7-4:2010+AMD1:2020 CSV IEC 61850-7-4:2007B

1.3 Code Component distribution
The Code Component will be available in light and full version:
– Full version will contain definition of the whole LNs defined in this standard with the
documentation associated and access will be restricted to purchaser of this part
– Light version will not contain the documentation but will contain the whole definition of the
LNs as per full version, and this light version will be freely accessible on the IEC website
for download, but the usage remains under the licensing conditions.
The link for downloading the light version of this code component is:
http://www.iec.ch/tc57/supportdocuments/IEC_61850-7-4.NSD.2007B3.light.zip
The Code Component will be available in light and full version:

– 6 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
– Full version will contain definition of the whole LNs defined in this standard with the
documentation associated and access will be restricted to purchaser of this part
– Light version will not contain the documentation but will contain the whole definition of the
LNs as per full version, and this light version will be freely accessible on the IEC website
for download, but the usage remains under the licensing conditions.
The Code Components for IEC 61850 data models (like LN definition in this IEC standard) are
available as the file format NSD defined by standard IEC 61850-7-7.
The Code Component included in this IEC standard are potentially subject to maintenance
works and user shall select the latest release in the repository located at:
http://www.iec.ch/tc57/supportdocuments
The latest version/release of the document will be found by selecting the file
IEC 61850-7-4.NSD.{VersionStateInfo}.full.zip with the filed VersionStateInfo of the highest
value.
Each Code Component is a ZIP package containing the electronic representation of the Code
Component itself, with a file describing the content of the package (IECManifest.xml).
The IECManifest contains different sections giving information on:
– The copyright notice
– The identification of the code component
– The publication related to the code component
– The list of the electronic files which compose the code component
– An optional list of history files to track changes during the evolution process of the
code component
The life cycle of a code component is not restricted to the life cycle of the related publication.
The publication life cycle goes through two stages, Version (corresponding to an edition) and
Revision (corresponding to an amendment). A third publication stage (Release) allow
publication of Code Component without need to publish an amendment.
This is useful when InterOp Tissues need to be fixed. Then a new release of the Code
Component will be released, which supersedes the previous release, and distributed through
the IEC TC57 web site.
2 Normative references
Add the following new normative references:
IEC IEEE 61850-9-3, Communication networks and systems for power utility automation - Part
9-3: Precision time protocol profile for power utility automation
IEC/IEEE 61850-9-3:2016, Communication networks and systems for power utility automation
– Part 9-3: Precision time protocol profile for power utility automation
IEC/IEEE 60255-118-1:2018, Measuring relays and protection equipment – Part 118-1:
Synchrophasor for power systems – Measurements
IEC 60255-24:2013 / IEEE Std C37.111-2013, Measuring relays and protection equipment –
Part 24: Common format for transient data exchange (COMTRADE) for power systems
Delete the following normative reference:

IEC 61850-7-4:2010/AMD1:2020 – 7 –
 IEC 2020
IEEE 1588, Precision clock synchronisation protocol for networked measurement and control
systems
3 Terms and definitions
Add the following new terms and definitions:
3.1
<> logical node class
abstract logical node class which is never instantiated, used to group common data objects
into a semantically meaningful entity and reuse them in a logical node class through
inheritance
3.2
<> logical node class
abstract logical node class with one special rule for changing the presence condition of some
of its data objects when they are inherited in the derived statistics (“ds”) context: in a logical
node that does not inherit from statistics logical node (i.e., Group L), the inherited “ds”
presence condition is not applicable (‘na’)
3.3
deprecated element
element still maintained in this edition of the standard, for backwards compatibility purpose,
but which is intended to be phased out in the next version of the standard
Note 1 to entry: A deprecated element by definition indicates what should be used instead.
3.4
presence condition
condition which specifies the occurance rules of data objects of logical node classes in
LNinstances of implementations
Note 1 to entry: Annex I shows an overview about possibles presence conditions.
3.5
scheduled entity
data object of one of the following common data classes APC, ASG, INS, ING SPC, SPG,
ENC or ENG where the control output or the value of the setting may be determined by the
scheduling system
3.6
scheduling system
collection containing a schedule controller and the schedules to which the schedule controller
refers
Note 1 to entry: The scheduling system is associated to a scheduled entity (by reference in the schedule
controller) and determines the behaviour of the scheduled entity.
4 Abbreviated terms
Replace the existing text of Clause 4 with the following new text:
4.1 General purpose abbreviated terms
CT current transducer / transformer
ds derived statistics
LD logical device
LN logical node
– 8 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
PresCond presence condition
nds not derived statistics
R0 zero sequence resistance
RMS root mean square
SCSM specific communication service mapping
VT voltage transducer / transformer
Z0 zero sequence impedance
Z1 positive sequence impedance

4.2 Abbreviated terms used in data object names
The following terms are used to build concatenated data object names. For example, ChNum
is constructed by using two terms "Ch" which stands for "Channel" and "Num" which stands
for "Number". Thus the concatenated name represents a "channel number".
Table 1 shows normative terms that are combined to create data object names for all domains
of IEC 61850 and for the domain of IEC 61400-25.
Table 1 – Normative abbreviations for data object names

Term Description Term Description
A Current; phase A (L1) Air Air
AC AC, alternating current Alg Algorithm
AGC Automatic generation control Alm Alarm
ASG Analogue setting CDC Als Alarm set
AWatt Wattmetric component of current Alt Altitude
Abr Abrasion Altn Alternate
Abs Absolute Amnt Amount
Absb Absorbing Amp Ampere, current DC or non-phase-related
AC
Acc Accuracy;
An Analogue
acceleration (deprecated: use Accl
instead)
Anc Ancillary
Accl Acceleration Ane Anemometer
Accm Accumulated
Ang Angle
Ack Acknowledgement, acknowledge
Ap Access point
Acs Access Apc Analogue point control
Act Action, activity, active, activate App Apparent
Actr Actuator
Ar Amperes reactive (reactive current)
Acu Acoustic Arc Arc
Addr Address Area Area
Adj Adjustment
Arr Array
Admin Administrative Asyn Asynchronous
Adp Adapter, adaptation At At
Aff Affected
Auth Authorisation
Age Ageing
Auto Automatic
Ahr Ampere hours Aux Auxiliary

IEC 61850-7-4:2010/AMD1:2020 – 9 –
 IEC 2020
Term Description Term Description
Av Average Cam Cam, e.g. rotating non-circular disk
Avl Availability Can Cancel
Ax Axial Cap Capability, capacity
Azi Azimuth Capac Capacitance
B Bushing; phase B (L2) Car Carrier
BG Before Gain Cbr Calibration
Bac Binary-controlled analogue value Ccw Counter clockwise
Bar Barrier Ccy Currency
Base Base Cds Condensation
Bat Battery Ceil Ceiling
Bck Backup Cel Cell
Bec Beacon Cf Crest factor
Beh Behaviour Cff Coefficient
Ber Bit error rate Cfg Configuration
Bias Bias Cg Combusted Gas
Bl Blade Ch Channel
Blb Bulb Cha Charger
Blk Block, blocked Chg Change
Blow Blowby Chk Check
Bnd Band, bandwidth Chr Characteristic
Boil Boiler Chs Chassis
Bot Bottom Circ Circulating, circuit
Brcb Buffered report control block Cl Cooling, coolant, cooling system (see
also CE)
Brg Bearing
Clc Calculate, calculated
Brk Brake
Clip Clip
Bsc Binary status control
Clk Clock
Bst Boost
Cloud Cloud
Bt Heartbeat
Clr Clear
Bub Bubbling
Cls Close, closed
Bus Bus
Cm Centimetres
Byp Bypass
Cmbu Combustible, combustion
C Carbon; phase C (L3)
Cmd Command
C2H2 Acetylene
Cmpl Completed, completion, complete
C2H4 Ethylene
Cmut Commute, commutator
C2H6 Ethane
Cndct Conductivity, Conducting
CB Circuit breaker
Cnt Counter
CE Cooling equipment (see also Cl)
Cntt Contractual
CG Core ground
Cnv Converter
CH4 Methane
Col Coil
CHP Combined heat and power
Comm Communication
CO Carbon monoxide
Comp Compensation
CO2 Carbon dioxide
ConfRev Configuration revision (confRev from
Cab Cable
IEC 61850-7-2)
Cal Calorie, caloric
Conn Connected, connections
– 10 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
Term Description Term Description
Cons Constant (general) Desc Description
Cor Correction Det Detected
Core Core Detun Detuning
Cost Cost Dev Device
Crank Crank Dew Dew
Crd Coordination Dff Diffuse
Crit Critical Dfl Deflector (used in Pelton turbines)
Crl Correlation Dft Default
Crp Creeping, slow movement Dia Diaphragm
Crv Curve Diag Diagnostics
Csmp Consumption, consumed Dif Differential, difference
Ctl Control Dig Digital
Ctr Center Dip Dip
Cum Cumulative Dir Direction
Cur Current Dis Distance
Cut Cut, cut-out, cut-in Dist Distribution
Cvr Cover, cover level Dith Dither
Cw Clockwise Dl Delay
Cwb Crowbar Dlt Delete
Cyc Cycle Dlv Delivery
D Derivate Dmd Demand
DC DC, direct current Dn Down, downstream
DER Distributed energy resource Dpc Double point control
DExt De-excitation Dpt Departure
DPCSO Double point controllable status output Drag Drag hand
DQ0 Direct, quadrature, and zero axis Dropout Dropout
quantities
Drp Droop
DS Device state
Drt Derate
DT Daylight saving time
Drtb Draft tube
Dam Dam
Drv Drive
Damp Damping
Dsa Disable, disabled
Date Date, date and time of action
Dsc Discrepancy
Day Day
Dsch Discharge
Db Deadband
Dscon Disconnected
Dcl DC-link
Dsp Displacement
Dct Direct
Dtc Detection
De De (prefix)
Dur Duration
Dea Dead
Dust Dust
Dec Decrease
Dv Deviation
Deg Degrees
Dw Delta Omega
Dehum De-humidifier
Dyn Dynamic
Del Delta
EE External equipment
Den Density
EF Earth fault
Dep Dependent
EFN Earth-fault neutraliser (Petersen coil)

IEC 61850-7-4:2010/AMD1:2020 – 11 –
 IEC 2020
Term Description Term Description
EMA E-mobility Account Fbc Field breaker configuration
ENG Enumerated status setting CDC Fer Frame error rate
ENS Enumerated status CDC Fil Filter, filtration system
EPC Emergency Power Control Fire Fire
EV Electrical Vehicle Fish Fish
EVSE EV Supply Equipment Fix Fixed
Echo Echo Fld Field
Ecp Electrical connection point Flk Flicker
Edt Edit, edited Fll Fall
Efc Efficiency Flm Flame
El Elevation Flood Flood
Ela Elasticity Flsh Flash, flashing
Em Emission Flt Fault
Emg Emergency Flush Flush
En Energy Flw Flow, flowing
Ena Enabled, enable, allow operation Fol Follower, following
Enc Enumerated control Forc Forced
Encl Enclosure Fu Fuse
End End Fuel Fuel
Eng Engine Full Full
Ent Entity, entities Fun Function
Entr Entry, entries Fwd Forward
Env Environment Gain Gain
Eq Equalization, equal, equivalent Gas Gas
Err Error Gbx Gearbox
Est Estimated Gdv Guide vane
Ev Evaluation Gen General
Evn Even Glob Global
Evt Event Gm Grand master
Ex External Gn Generator
ExIm Export/import Gnd Ground
Exc Exceeded GoCBRe GOOSE control block reference
f
Excl Exclusion
Gocb GOOSE control block
Exp Expired
Gr Group
Exps Expansion
Gra Gradient
Expt Export
Grd Guard
Ext Excitation
Gri Grid
F Float
Gross Gross
FA Fault arc
Gs Grease
FPM Fuel processing module
Gte Gate
Fa "Fire all" sequence (to thyristors)
Gust Gust
Fact Factor
H Harmonics (phase-related)
Fail Failure
H2 Hydrogen
Fan Fan
– 12 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
Term Description Term Description
H2O Water (chemical aspect: liquid, steam, Iaogpp Information available operative
etc.) generating with partial performance
HP Hot point Iaong Information available operative non-
generating
HPh Harmonics phase
Iaongel Information available operative non-
Ha Harmonics (non-phase-related AC)
generating out of electrical specification
Har Harmonic
Iaongen Information available operative non-
generating out of environment
Hb Harmonic bin
specification
Hd Head
Iaongrs Information available operative non-
generating requested shutdown
Health Health
Iaongts Information available operative non-
Heat Heater, heating, heat (see also Ht)
generating technical standby
Hello Hello signal, Live signal, "I am alive"
Ice Ice
signal
Id Identity, identifier
Hi High, highest
Ieee IEEE definition
Hlf Half
IeeeKH Proportional gain HF (High Frequency).
Hold Hold
Defined in IEEE 421.5
Hor Horizontal
IeeeKH1 Proportional gain HF positive. Defined in
Horn Horn
IEEE 421.5
Ht Heating, heating system (see also Heat)
IeeeKH1 Lead gain HF positive. Defined in IEEE
1 421.5
Htex Heat-exchanger
IeeeKH1 Lead gain HF negative. Defined in IEEE
Hub Hub
7 421.5
Hum Humidity
Proportional gain HF negative. Defined in
IeeeKH2
IEEE 421.5
Hy Hydraulic, hydraulic system
IeeeKI Proportional gain IF (Intermediate
Hyd Hydrological, hydro, water
Frequency). Defined in IEEE 421.5
Hys Hysteresis
IeeeKI1 Proportional gain IF positive. Defined in
Hz Frequency IEEE 421.5
Hz1 Frequency at side 1 IeeeKI1 Lead gain IF positive. Defined in IEEE
1 421.5
Hz2 Frequency at side 2
IeeeKI1 Lead gain IF negative. Defined in IEEE
I Integral, integration
7 421.5
ING Integer status setting CDC
IeeeKI2 Proportional gain IF negative. Defined in
IEEE 421.5
INS Integer status CDC
IeeeKL Proportional gain LF (Low Frequency).
ISCSO Integer status controllable status output
Defined in IEEE 421.5
Ia Information available
IeeeKL1 Proportional gain LF positive. Defined in
IEEE 421.5
Iafm Information available force majeure
Iano Information available non-operative IeeeKL1 Lead gain LF positive. Defined in IEEE
1 421.5
Ianofo Information available non-operative
forced outage IeeeKL1 Lead gain LF negative. Defined in IEEE
7 421.5
Ianopca Information available non-operative
Proportional gain LF negative. Defined in
planned corrective action IeeeKL2
IEEE 421.5
Ianos Information available non-operative
IeeeKs1 Gain Ks1. Defined in IEEE 421.5
suspended
IeeeKs2 Gain Ks2. Defined in IEEE 421.5
Ianosm Information available non-operative
scheduled maintenance
IeeeKs3 Gain Ks3. Defined in IEEE 421.5
Iao Information available operative
Ramptrack lowpass degree M. Defined in
IeeeM
Iaog Information available operative IEEE 421.R
generating
IeeeN Ramptrack overall degree N. Defined in
Iaogfp Information available operative IEEE 421.5
generating with full performance
IeeeT1 Time constant T1. Defined in IEEE 421.5

IEC 61850-7-4:2010/AMD1:2020 – 13 –
 IEC 2020
Term Description Term Description
frequency positive). Defined in IEEE
IeeeT10 Time constant T10. Defined in IEEE
421.5
421.5
IeeeTI6 Time constant TI6 (Intermediate
IeeeT11 Time constant T11. Defined in IEEE
frequency positive). Defined in IEEE
421.5
421.5
IeeeT2 Time constant T2. Defined in IEEE 421.5
IeeeTI7 Time constant TI7 (Intermediate
frequency negative). Defined in IEEE
IeeeT3 Time constant T3. Defined in IEEE 421.5
421.5
IeeeT4 Time constant T4. Defined in IEEE 421.5
IeeeTI8 Time constant TI8 (Intermediate
IeeeT7 Time constant T7. Defined in IEEE 421.5
frequency negative). Defined in IEEE
421.5
IeeeT8 Time constant T8. Defined in IEEE 421.5
IeeeTI9 Time constant TI9 (Intermediate
IeeeT9 Time constant T9. Defined in IEEE 421.5
frequency negative). Defined in IEEE
421.5
IeeeTH1 Time constant TH1 (High frequency
positive). Defined in IEEE 421.5
Time constant TL1 (Low frequency
IeeeTL1
positive). Defined in IEEE 421.5
IeeeTH1 Time constant TH10 (High frequency
0 negative). Defined in IEEE 421.5
IeeeTL1 Time constant TL10 (Low frequency
0 negative). Defined in IEEE 421.5
IeeeTH1 Time constant TH11 (High frequency
1 negative). Defined in IEEE 421.5
IeeeTL1 Time constant TL11 (Low frequency
1 negative). Defined in IEEE 421.5
IeeeTH1 Time constant TH12 (High frequency
2 negative). Defined in IEEE 421.5
IeeeTL1 Time constant TL12 (Low frequency
2 negative). Defined in IEEE 421.5
IeeeTH2 Time constant TH2 (High frequency
positive). Defined in IEEE 421.5
IeeeTL2 Time constant TL2 (Low frequency
positive). Defined in IEEE 421.5
IeeeTH3 Time constant TH3 (High frequency
positive). Defined in IEEE 421.5
IeeeTL3 Time constant TL3 (Low frequency
positive). Defined in IEEE 421.5
IeeeTH4 Time constant TH4 (High frequency
positive). Defined in IEEE 421.5
IeeeTL4 Time constant TL4 (Low frequency
positive). Defined in IEEE 421.5
IeeeTH5 Time constant TH5 (High frequency
positive). Defined in IEEE 421.5
IeeeTL5 Time constant TL5 (Low frequency
positive). Defined in IEEE 421.5
IeeeTH6 Time constant TH6 (High frequency
positive). Defined in IEEE 421.5
IeeeTL6 Time constant TL6 (Low frequency
positive). Defined in IEEE 421.5
IeeeTH7 Time constant TH7 (High frequency
negative). Defined in IEEE 421.5
IeeeTL7 Time constant TL7 (Low frequency
negative). Defined in IEEE 421.5
IeeeTH8 Time constant TH8 (High frequency
negative). Defined in IEEE 421.5
Time constant TL8 (Low frequency
IeeeTL8
negative). Defined in IEEE 421.5
IeeeTH9 Time constant TH9 (High frequency
negative). Defined in IEEE 421.5
IeeeTL9 Time constant TL9 (Low frequency
negative). Defined in IEEE 421.5
IeeeTI1 Time constant TI1 (Intermediate
frequency positive). Defined in IEEE
IeeeTw1 Time constant wash out Tw1. Defined in
421.5
IEEE 421.5
IeeeTI1 Time constant TI10 (Intermediate
IeeeTw2 Time constant wash out Tw2. Defined in
0 frequency negative). Defined in IEEE
IEEE 421.5
421.5
IeeeTw3 Time constant wash out Tw3. Defined in
IeeeTI1 Time constant TI11 (Intermediate
IEEE 421.5
1 frequency negative). Defined in IEEE
421.5
IeeeTw4 Time constant wash out Tw4. Defined in
IEEE 421.5
IeeeTI1 Time constant TI12 (Intermediate
frequency negative). Defined in IEEE
IeeeVH Maximum limit set-point HF. Defined in
421.5
Max IEEE 421.5
IeeeTI2 Time constant TI2 (Intermediate
IeeeVH Minimum limit set-point HF. Defined in
frequency positive). Defined in IEEE
Min IEEE 421.5
421.5
IeeeVIM Maximum limit set-point IF. Defined in
IeeeTI3 Time constant TI3 (Intermediate
ax IEEE 421.5
frequency positive). Defined in IEEE
421.5 IeeeVIM Minimum limit set-point IF. Defined in
in IEEE 421.5
IeeeTI4 Time constant TI4 (Intermediate
IeeeVL Maximum limit set-point LF. Defined in
frequency positive). Defined in IEEE
421.5 Max IEEE 421.5
IeeeVL Minimum limit set-point LF. Defined in
IeeeTI5 Time constant TI5 (Intermediate

– 14 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
Term Description Term Description
Min IEEE 421.5 factor
IeeeVsi1 Input High Limit 1. Defined in IEEE 421.5 KFact K factor (harmonics)
Max
Kck Kicker
IeeeVsi1 Input Low Limit 1. Defined in IEEE 421.5
Key Key, physical control device
Min
L Lower (action)
IeeeVsi2 Input High Limit 2. Defined in IEEE 421.5
Max
LDC Line drop compensation
IeeeVsi2 Input Low Limit 2. Defined in IEEE 421.5
LDCR Line drop compensation resistance
Min
LDCX Line drop compensation reactance
IeeeVst
Output High Limit. Defined in IEEE 421.5
Max
LDCZ Line drop compensation impedance
IeeeVst Output Low Limit. Defined in IEEE 421.5
LED Light-emitting diode
Min
LTC Load tap changer
Imb Imbalance
Last Last
Imp Impedance non-phase-related AC
Ld Lead
Impact Impact
Ldp Link discovery protocol
Impt Import
Leap Leap (second)
In Input
Len Length
Ina Inactivity
Lev Level
Inc Integer control
Lft Lifting, lift
Incl Inclination
Lg Lag
Incr Increment, increase
Life Lifetime
Ind Indication
Lim Limit
Indp Independent
Lin Line
Iner Inertia
Liv Live
Inh Inhibit
Lkd Locked
Inl Inline
Lkg Leakage
Inlet Inlet
Ll Last long (interval)
Inn Inner
Lo Low (state or value)
Ins Insulation
Loc Local
Insol Insolation
Locb Log control block
Inst Instantaneous
Lod Load, loading
Int Integer
Log Log
Intm Intermediate
Lok (use Lkd instead) Locked
Intn Internal
Loop Loop
Intr Interrupt, interruption
Los Loss
Intv Interval
Ls Last short (interval)
Inv Inverter, inverted, inverse
Lst List
Isc Integer status control
Lub Lubrication
Isld Islanded
Lum Luminosity
Iso Isolation
M Minutes
Iu Information unavailable
MV Measured value CDC
Ix Index
Mac Media access control, MAC-address
Jmp Jump
Made Made
Jnt Joint
Mag Magnetic, magnitude
K Constant (regulation)
Maint Maintenance
K0Fact Zero-sequence (residual) compensation

IEC 61850-7-4:2010/AMD1:2020 – 15 –
 IEC 2020
Term Description Term Description
Man Manual Obl Obligation
Mat Material Oc Open circuit
Mau Medium access unit Odd Odd
Max Maximum Of Offline
Mbr Membrane Off Off, device disengaged, not running
Md Motor drive Ofs Offset
Mdul Module Oil Oil
Meas Measurement On On, device applied, running
Mech Mechanical Oo Out of
Media Media Op Operate, operating, operation
Mem Memory Operate Operate order to any device
Min Minimum Opn Open, opened
Mir Mirror Ord Order
Mlt Multiple Out Output
Mns Mains Ov Over, override, overflow
Mod Mode Ovl Overload
Mot Motor Ox Oxidant
Mrg Margin P Proportional
Mrk Market PF Power factor
Mst Moisture PH Acidity, value of pH
Msv Main signaling voltage PNV Phase-to-neutral voltage
Msvcb Multicast sampled values control block POW Point on wave switching
Mth Method PP Phase to phase
Mult Multiplier PPV Phase to phase voltage
Mvm Movement, moving PT1 Low-pass exponential time rate filter
N2 Nitrogen Pa Partial
NOx Nitrogen oxide Pair Pair, paired
NQS Average partial discharge current Pap Paper
Nam Name Par Parallel
Name (reserved for use in data objects
Name Pas Passive
EEName and LNName only)
Path Path
Ndl Needle (used in Pelton turbines)
Pcb Power quality classifier bin
NdsCom Needs commissioning
Pct Percent, percentage
Neut Neutral
Pdm Power quality demodulation
Ng Negative
Pe Electric Power
Ngt Nogotiation
Per Periodic, period
Nhd Net head
Ph Phase to reference
Night Night
Phs Phase
No No, not
Phy Physical
Nom Nominal, normalising
Pi Instantaneous real power
Num Number
Pin Pin
Nxt Next
Pipe Pipe
O2 Oxygen
Pk Peak
O3 Ozon, trioxygen
Pl Plant
– 16 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
Term Description Term Description
Plg Plug Re Retry
Pls Pulse React Reactance, reactive
Plt Plate; long-term flicker severity Rec Reclose
Pmp Pump Rec1 Reclose after single phase fault
Po Polar Rec13 Reclose after evolving fault
Pol Polarizing Rec3 Reclose after three phase fault
Polytr Polytropic Recha Recharge, recharging
Port Port Rect Rectifier
Pos Position Red Redundant; (deprecated meaning)
reduction
Pot Potentiometer
Ref Reference
Prc Price, pricing
Reg Regulation
Pre Pre-
Rel Release
Prec Precondition, initial status
Req Requested
Pres Pressure
Res Residual
Prg Progress, in progress
Reso Resonance
Prim Primary
Reuse Reuse
Prio priority
Rf Refreshment
Prm Permissive
Rin Reinsertion
Pro Protection
Ris Resistance
Proc Process
Rl Relation, relative
Proxy Proxy
Rm Mutual resistance
Prs Presence
Rmp Ramping, ramp
Prt Parts, part
Rms Root mean square
Ps Positive
Rn Rain
Psk Penstock
Rnbk Runback
Pss PSS, power system stabiliser function
Rng Range
Pst Post, short-term flicker severity
Rod Rod
Pt Point
Root Root
Pth Pitch
Rot Rotation, rotor
Pwr Power
Rpt Repeat, repetition
Qty Quantity
Rs Reset, resettable
Qu Queue
Rsl Result
Qud Quad
Rst Restraint, restriction
R Raise, increase
Rsv Reserve
Rad Radiation
Rt Ride-through
Ral Rail
Rte Rate
Ramp Ramp
Rtg Rating
Rat Ratio
Rub Run-up/back
Rb Runner blade
Run Run
Rcd Record, recording
Rv Reverse
Rch Reach
Rvc Rapid voltage change
Rcl Reclaim
Rvrt Revert
Rct Reaction
Rwy Runaway, e.g. in runaway speed
Rdy Ready
IEC 61850-7-4:2010/AMD1:2020 – 17 –
 IEC 2020
Term Description Term Description
Rx Receive, received Soc State of charge
S10 Coefficient S1.0 Sof Switch on to fault
S12 Coefficient S1.2 Spc Single point control
SM Servo, servo-motor Spcf Specific
SNL Speed-no-load, connected but not Spd Speed
generating
Spec Spectra
SOx Sulphur oxide
Spir Spiral
SPCSO Single point controllable status output
Spt Setpoint
SPG Single point setting CDC
Sq Square
SPS Single point status CDC
Src Source
SPl Single pole/phase
Srfc Surface
ST Standard time
St Status, state
Saf Safety
Sta Station, function at plant level
Sag Sag
Stab Stabilizer
Sar Surge arrestor
Stat Statistics
Sat Saturation
Stc Stack
Sc Short circuit
Std Standard
Scale Scale
Stdby Standby
Schd Schedule
Step Step
Scnd Secondary
Stk Stroke
Sco Supply change over
Stl Still, not moving
Sec Security
Stnd Stand, standing
Sel Select
Sto Storage, e.g. activity of storing data
Self Self
Stop Stop
Seq Sequence
Storm Storm
Ser Series, serial
Stow Stow
Set Setting
Str Start
Sgcb Setting group control block
Strg String
Sh Shunt
Stt Stator
Shar Shared
Stuck Stuck, cannot move
Shft Shaft
Sub Sub
Shld Shielded
Sum Sum
Sig Signal
Sup Supply
Sign Sign
Sv Sampled value
Sim Simulation, simulated
SvCBRe SV control block reference
Sld Solidity f
Slnt Salinity, saline content Svc Service
Slp Sleep; slip Sw Switch, switched
Smok Smoke Swg Swing
Smp Sampling Swl Power quality event swell
Snd Sound pressure Syn Synchronisation, synchronous,
synchronism, synchrocheck
Snpt Snapshot
Sys System
Snr Signal to noise ratio
TP Three pole/phase
Snw Snow
Ta Armature time constant
– 18 – IEC 61850-7-4:2010/AMD1:2020
 IEC 2020
Term Description Term Description
Tag Tag (maintenance work in progress) Trip Trip (non-electrical function)
Tap Tap Trk Track, tracking
Task Task Trp Transient Performance Class
Td Transformer derating Trs Transient
Td0p Td0' Trunk Trunk
Td0s Td0'' Ts Total signed
Tdd Total demand distortion Tu Total unsigned
Tdf Transformer derating factor Tun Tuning
Tdp Td' Tur Turbine
Tds Td'' Tx Transmit, transmitted
Tech Technology Typ Type
Term Termination UPS Uninterruptible power supply
Test Test UTC Coordinated Universal Time
Tgt Target Uhf Ultra-high-frequency
Thd Total harmonic distortion Un Un-; under
Thm Thermal Unav Unavailable
Ti Telephone influence Unb Unbalanced
Tilt Tilt Unld Unload
Tm Time Unt Unit, production unit
Tm1 Time constant 1 Up Up, upstream
Tm2 Time constant 2 Ups Uninterruptible Power Supply
Tm3 Time constant 3 Urcb Unbuffered report control block
Tmh Time in h Use Use
Tmm Time in min Used Used
Tmms Time i
...