General Information

Abstract

This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines.
This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions.
The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system.
Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.

Status
Published
Public Enquiry End Date
29-Apr-2025
Publication Date
23-Sep-2026
Technical Committee
PSE - Power systems management
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Sep-2026
Due Date
22-Nov-2026
Completion Date
24-Sep-2026

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Overview

SIST EN IEC 61850-7-410:2026 specifies the basic communication structure for hydroelectric power plants, steam and gas turbines within power utility automation systems. As part of the IEC 61850 series, this standard addresses the data modeling and logical node classes required for efficient communication networks and systems in electric power generation facilities. By defining standardized interfaces and models, the document supports interoperability, real-time monitoring, and control of complex generation assets, thereby enhancing the reliability and efficiency of power utility automation.

Key Topics

  • Logical Node Classes: Defines a comprehensive set of logical node (LN) classes specific to hydroelectric power plants, steam, and gas turbines. This includes LNs for components, control and supervision, management functions, operational functions, and interface with primary equipment.
  • Modeling Concepts: Provides principles for modeling the communication structure and data exchange in large power generation domains, including layered approaches for power station control.
  • Control and Supervision: Details logical nodes for control, supervision, and management of electrical, mechanical, and hydraulic subsystems within generation plants.
  • Management and Operational Functions: Outlines LNs supporting advanced management tasks (e.g., governor management, excitation control, power and water management) as well as operational functions for safe and optimal plant performance.
  • Domain-specific Equipment Modeling: Includes LNs tailored to domain-specific components such as turbines, gates, valves, governors, actuators, sensors, position indicators, and monitoring systems.

Applications

IEC 61850-7-410 is of practical value for:

  • Hydroelectric Power Plant Automation: Enabling seamless integration and automation of control, monitoring, and management systems in hydro plants with standards-based communication.
  • Steam and Gas Turbine Operations: Supporting standardized interfaces for efficient management and operational control in fossil-fuel-based generation.
  • System Integration: Facilitating interoperability between diverse equipment and control systems from different manufacturers, reducing integration complexity and cost.
  • Real-time Telecontrol & Telemetry: Supporting advanced remote monitoring, telecontrol, and telemetering functions to optimize plant operations and maintenance.
  • Digitalization of Power Plants: Contributing to digital transformation initiatives by providing a robust data model and interface specification for automation solutions.

Related Standards

  • IEC 61850 Series: A comprehensive standard for communication networks and systems for power utility automation, applicable from substation to generation and distribution automation.
  • IEC 61850-7-4: Specifies core logical node classes broadly used in power system automation.
  • IEC 61850-6: Covers configuration description language for communication in substations.
  • IEC 61400 Series: Standards for wind turbine communication (complementary to hydro/thermal).
  • IEC 61362: Provides recommendations for hydro governor modeling.
  • IEEE 421.1: Reference for excitation control modeling in synchronous machines.

Practical Value

By implementing SIST EN IEC 61850-7-410:2026, utilities and power plant operators gain:

  • Standardized Communication: Seamless data exchange among protection, automation, and control devices within and across generation plants.
  • Enhanced Interoperability: Simplified integration of systems and components, regardless of vendor, through uniform logical node specification.
  • Improved Reliability: Real-time, standards-based monitoring and control help prevent faults and optimize plant performance.
  • Future-Proof Automation: Supporting scalable and adaptable architectures to accommodate evolving operational needs and digitalization initiatives in the power sector.

This standard is essential for engineers, system integrators, and solution providers involved in the design, deployment, and operation of modern power generation automation systems, ensuring compliance, efficiency, and robust system performance.

Relations

Effective Date
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Effective Date
11-Aug-2026
Effective Date
11-Aug-2026
Effective Date
11-Aug-2026

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Frequently Asked Questions

SIST EN IEC 61850-7-410:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Communication networks and systems for power utility automation - Part 7-410: Basic communication structure - Hydroelectric power plants, steam and gas turbines - Logical node classes (IEC 61850-7-410:2026)". This standard covers: This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines. This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions. The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system. Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.

This part of IEC 61850 specifies the logical node classes for use in the domain of hydroelectric power stations, steam and gas turbines. This IEC61850 domain information model standard utilizes the existing Logical Node (LN) classes defined in IEC 61850-7-4, Basic communication structure – Compatible logical node classes and data object classes where possible, while defining new and extended domain specific LN classes to provide the necessary data objects for application to functions and systems in the domain of hydroelectric power stations, steam and gas turbines. The domain information model includes the interface towards a central operator centre’s control functions. The Scope of this document, related to steam and gas turbine specifics, is limited to overall control functions and generator and turbine control functions. For hydroelectric power, the scope includes the entire power station automation system. Edition 3 is intended to form a basis for extensions in local implementations. Such extensions may be defined in profiles. Many of the Logical Nodes defined in this document are designed to be suitable for use in domains beyond the scope of hydro power plants and steam and gas turbines. A suggested structure of the Logical Nodes into packages for integration with other domains is provided in Annex G (informative), Migration of this document to the future edition of IEC 61850.

SIST EN IEC 61850-7-410:2026 is classified under the following ICS (International Classification for Standards) categories: 27.140 - Hydraulic energy engineering; 29.240.30 - Control equipment for electric power systems; 33.200 - Telecontrol. Telemetering. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN IEC 61850-7-410:2026 has the following relationships with other standards: It is inter standard links to SIST EN 61850-7-410:2013, SIST EN 61850-7-410:2013/A1:2016, SIST EN 61850-5:2013, SIST EN 61850-7-3:2011/A1:2020, SIST EN 61850-7-1:2012/A1:2020, SIST EN 62270:2005, SIST EN IEC 61850-7-420:2022, SIST EN 61850-7-4:2010/A1:2020, SIST EN IEC 61362:2024, SIST EN 60041:2001, SIST EN IEC 60545:2021, SIST EN 61850-7-1:2012, SIST EN 61850-7-3:2011, SIST EN 61850-7-4:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN IEC 61850-7-410:2026 is associated with the following European legislation: Standardization Mandates: M/490. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

SIST EN IEC 61850-7-410:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-november-2026
Nadomešča:
SIST EN 61850-7-410:2013
SIST EN 61850-7-410:2013/A1:2016
Komunikacijska omrežja in sistemi za avtomatizacijo uporabe električne energije -
7-410. del: Osnovna komunikacijska struktura - Hidroelektrarne, parne in plinske
turbine – Razredi logičnih vozlišč (IEC 61850-7-410:2026)
Communication networks and systems for power utility automation - Part 7-410: Basic
communication structure - Hydroelectric power plants, steam and gas turbines - Logical
node classes (IEC 61850-7-410:2026)
Kommunikationsnetze und -systeme für die Automatisierung in der elektrischen
Energieversorgung - Teil 7-410: Grundlegende Kommunikationsstruktur -
Wasserkraftwerke - Kommunikation für Überwachung, Regelung und Steuerung (IEC
61850-7-410:2026)
Réseaux et systèmes de communication pour l'automatisation des systèmes électriques
- Partie 7-410: Structure de communication de base - Centrales hydroélectriques -
Communication pour le contrôle-commande (IEC 61850-7-410:2026)
Ta slovenski standard je istoveten z: EN IEC 61850-7-410:2026
ICS:
27.140 Vodna energija Hydraulic energy engineering
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 IEC 61850-7-410

NORME EUROPÉENNE
EUROPÄISCHE NORM September 2026
ICS 33.200 Supersedes EN 61850-7-410:2013; EN 61850-7-
410:2013/A1:2016
English Version
Communication networks and systems for power utility
automation - Part 7-410: Basic communication structure -
Hydroelectric power plants, steam and gas turbines - Logical
node classes
(IEC 61850-7-410:2026)
Réseaux et systèmes de communication pour Kommunikationsnetze und -systeme für die
l'automatisation des systèmes électriques - Partie 7-410: Automatisierung in der elektrischen Energieversorgung -
Structure de communication de base - Centrales Teil 7-410: Grundlegende Kommunikationsstruktur -
hydroélectriques - Communication pour le contrôle- Wasserkraftwerke - Kommunikation für Überwachung,
commande Regelung und Steuerung
(IEC 61850-7-410:2026) (IEC 61850-7-410:2026)
This European Standard was approved by CENELEC on 2026-08-20. 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61850-7-410:2026 E

European foreword
The text of document 57/2885/FDIS, future edition 3 of IEC 61850-7-410, prepared by TC 57 "Power
systems management and associated information exchange" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61850-7-410:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-09-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-09-30
document have to be withdrawn
This document supersedes EN 61850-7-410:2013 and all of its amendments and corrigenda (if any).
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 standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61850-7-410:2026 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 standard indicated:
IEC 61400-25-2 NOTE Approved as EN 61400-25-2
IEC 61850-6:2009 NOTE Approved as EN 61850-6:2010 (not modified)
IEC 61850-6:2009/AMD2:2024 NOTE Approved as EN 61850-6:2010/A2:2025 (not modified)
IEC 61850-10 NOTE Approved as EN 61850-10
IEC 61970-301 NOTE Approved as EN IEC 61970-301
IEC 62264-1:2013 NOTE Approved as EN 62264-1:2013 (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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60034 2022 Rotating electrical machines - Part 1: - -
Rating and performance
IEC 60041 1991 Field acceptance tests to determine the EN 60041 1994
hydraulic performance of hydraulic
turbines, storage pumps and pump-
turbines
+ corrigendum Mar. 1996 - -
IEC 60050-351 2013 International Electrotechnical Vocabulary - - -
Part 351: Control technology
IEC 60545 2021 Guidelines for commissioning and EN IEC 60545 2021
operation of hydraulic turbines, pump-
turbines and storage pumps
IEC 61362 2024 Guidelines to specification of hydraulic EN IEC 61362 2024
turbine governing systems
IEC/TS 61850-1-2 2020 Communication networks and systems for - -
power utility automation - Part 1-2:
Guideline on extending IEC 61850
+ A1 2022
IEC/TS 61850-2 2019 Communication networks and systems in - -
substations - Part 2: Glossary
IEC 61850-5 2013 Communication networks and systems for EN 61850-5 2013
power utility automation - Part 5:
Communication requirements for functions
and device models
IEC 61850-7-1 2011 Communication networks and systems for EN 61850-7-1 2011
power utility automation - Part 7-1: Basic
communication structure - Principles and
models
+ A1 2020 + A1 2020
IEC 61850-7-3 2010 Communication networks and systems for EN 61850-7-3 2011
power utility automation - Part 7-3: Basic
communication structure - Common data
classes
+ A1 2020 + A1 2020
IEC 61850-7-4 2010 Communication networks and systems for EN 61850-7-4 2010
power utility automation - Part 7-4: Basic
communication structure - Compatible
logical node classes and data object
classes
+ A1 2020 + A1 2020
IEC 61850-7-6 2024 Communication networks and systems for - -
power utility automation - Part 7-6:
Guideline for definition of Basic Application
Profiles (BAPs) using IEC 61850
IEC 61850-7-420 2021 Communication networks and systems for EN IEC 61850-7- 2021
power utility automation - Part 7-420: Basic 420
communication structure - Distributed
energy resources and distribution
automation logical nodes
IEC/TR 61850-7- 2017 Communication networks and systems for - -
500 power utility automation - Part 7-500: Basic
information and communication structure -
Use of logical nodes for modeling
application functions and related concepts
and guidelines for substations
ISO/IEC 81346 series Industrial systems, installations and - -
equipment and industrial products -
Structuring principles and reference
designations
IEC 62270 2013 Hydroelectric power plant automation - - -
Guide for computer-based control
IEC 62361-103 2013 Power systems management and - -
associated information exchange -
Interoperability in the long term - Part 103:
Standard profiling
IEC/IEEE 63198- 2023 Technical guidelines for smart - -
2775 hydroelectric power plant
IEC 63200 2021 Definition of extended SGAM smart energy - -
grid reference architecture model
IEEE 421.1-2021 - IEEE Standard Definitions for Excitation - -
Systems for Synchronous Machines
IEEE 421.5-2016 - IEEE Recommended Practice for - -
Excitation System Models for Power
System Stability Studies
ANSI/ASSP Z244.1 2024 The Control Of Hazardous Energy - - -
Lockout, Tagout, And Alternative Methods

IEC 61850-7-410 ®
Edition 3.0 2026-07
INTERNATIONAL
STANDARD
Communication networks and systems for power utility automation -
Part 7-410: Basic communication structure - Hydroelectric power plants, steam
and gas turbines - Logical node classes
ICS 33.200  ISBN 978-2-8327-1365-5

IEC 61850-7-410:2026-07(en)
IEC 61850-7-410:2026 © IEC 2026
CONTENTS
FOREWORD . 24
INTRODUCTION . 27
1 Scope . 28
1.1 General . 28
1.2 Published versions of the standard and related namespace names . 28
1.3 Identification of the Code Component(s) . 28
1.3.1 Identification of the namespace description . 28
1.4 Code Component distribution . 29
1.5 Application of the logical node classes . 30
2 Normative references . 30
3 Terms and definitions . 31
4 Abbreviated terms. 31
4.1 General . 31
4.2 Deprecated abbreviations . 44
5 Concepts and constructs for modelling large power generation domains . 46
5.1 Modelling concepts for large power generation facilities . 46
5.1.1 Overview . 46
5.1.2 Stakeholders . 48
5.1.3 Large power generation information capabilities . 49
5.1.4 Domain specificities, profile enabling . 49
5.1.5 Concept of class categories for large power generation . 50
5.1.6 Concept of a layered model for large power generation . 59
5.2 Top layer model and its components . 64
5.2.1 Generic large power generation model breakdown . 64
5.2.2 Interaction mechanisms between top layer components . 67
5.3 Bottom layer model and its components . 74
5.3.1 General. 74
5.3.2 Field layer . 74
5.3.3 Edge-control layer . 74
5.4 Intermediate layer . 76
6 Domain specific asset models . 78
6.1 Large power generation composition model . 78
6.1.1 General. 78
6.1.2 Mechanical rotating machine models . 79
6.1.3 Electrical rotating machine . 81
6.2 Unit state diagram . 82
7 Operational functions . 87
7.1 General . 87
7.2 Operational functions for analogue control . 87
7.2.1 Information processing patterns in analogue control . 87
7.2.2 Setpoint handler and associated data objects . 92
7.2.3 Setpoint deviation alarm . 92
7.2.4 Utilization of a data object for control setpoint, upper limit, and lower
limit . 93
7.2.5 Specifications for individual operational functions . 94
7.3 Operational functions for state change . 96
IEC 61850-7-410:2026 © IEC 2026
7.3.1 General. 96
7.3.2 Issuing state transition commands regardless of asset state . 97
7.3.3 Time target for operational state transition . 97
8 Management functions . 98
8.1 General . 98
8.2 Joint control level management . 99
8.3 Unit level management and machine level management . 100
8.3.1 General. 100
8.3.2 Selection and processing of requests according to priorities . 101
8.3.3 Analogue control management . 103
8.3.4 State change management . 107
8.4 Hydro device management . 109
9 Logical node classes (LogicalNodes_7_410) . 112
9.1 General . 112
9.2 Logical nodes for assets (Assets_7_410) . 113
9.2.1 General. 113
9.2.2 <> LN: Electrical rotating machine  Name:
ElectricalRotatingMachineLN. 117
9.2.3 <> LN: Synchronous machine excitation  Name:
ExcitationSystemLN . 119
9.2.4 <> LN: Hydropower control  Name: HydroControlLN . 120
9.2.5 <> LN: Hydropower non control  Name: HydroNonControlLN . 122
9.2.6 <> LN: Rotating machine bearing  Name: MachineBearingLN . 123
9.2.7 <> LN: Prime mover - generator transmission system  Name:
MechTransmissionLN . 124
9.2.8 <> LN: On-off controllable asset  Name:
OnOffControlAssetLN . 125
9.2.9 <> LN: Open-closed-related controllable assets  Name:
OpenClosedControlAssetLN . 127
9.2.10 <> LN: Basic asset operating mode LN  Name:
BasicAssetOpModeLN . 128
9.2.11 <> LN: Clutch system  Name: ClutchLN. 129
9.2.12 <> LN: Machine deceleration  Name: DecelerationLN . 131
9.2.13 LN: Synchronous machine field  Name: HSMF . 132
9.2.14 LN: Shaft seal system  Name: HSSL . 133
9.2.15 LN: Surge shaft/tank  Name: HSST . 135
9.2.16 LN: Guide vanes (wicket gate)  Name: HTGV . 136
9.2.17 LN: Runner blades  Name: HTRB . 138
9.2.18 LN: Trash rack  Name: HTRK . 140
9.2.19 LN: Hydro prime mover - generator transmission system  Name: HTRM. 141
9.2.20 LN: Turbine  Name: HTUR . 142
9.2.21 <> LN: Unit asset LN  Name: PowerGenerationUnitLN . 146
9.2.22 <> LN: Rotating machine LN  Name: RotatingMachineLN . 148
9.2.23 <> LN: Shaft seal LN  Name: ShaftSealLN. 150
9.2.24 <> LN: Synchronous machine field  Name:
SynchMachineFieldLN . 151
9.2.25 <> LN: Thermal turbine  Name: ThermalTurbineLN . 152
9.2.26 <> LN: Hydro operating device LN  Name:
HydroOperatingDeviceLN . 154
9.2.27 LN: Turbine generator shaft bearing  Name: EBRG . 156
IEC 61850-7-410:2026 © IEC 2026
9.2.28 LN: Clutch system for thermal power units  Name: ECTH . 157
9.2.29 LN: Synchronous machine excitation for thermal power unit  Name:
EEXT . 158
9.2.30 LN: Fuel control valve  Name: EFCV . 159
9.2.31 LN: Electrical rotating machine (synchronous/asynchronous generator)
for thermal power units  Name: EGEN . 161
9.2.32 LN: Thermal governor  Name: EGOV . 163
9.2.33 LN: Gas turbine unit  Name: EGTU . 164
9.2.34 LN: Steam control valve  Name: ESCV . 166
9.2.35 LN: Synchronous machine field  Name: ESMF . 167
9.2.36 LN: Shaft seal system  Name: ESSL . 169
9.2.37 LN: Steam turbine unit  Name: ESTU . 170
9.2.38 LN: Turning-gear system  Name: ETGR . 172
9.2.39 LN: Thermal prime mover - generator transmission system  Name:
ETRM . 173
9.2.40 LN: Thermal power unit  Name: EUNT . 174
9.2.41 LN: Turbine - generator shaft bearing  Name: HBRG . 177
9.2.42 LN: Waterway canal  Name: HCNL . 178
9.2.43 LN: Crest spillway  Name: HCSW . 179
9.2.44 LN: Clutch system for hydro power units  Name: HCTH . 180
9.2.45 LN: Braking (counter) nozzle  Name: HCTN . 181
9.2.46 LN: Hydropower dam  Name: HDAM . 183
9.2.47 LN: Deflector  Name: HDFL . 184
9.2.48 LN: Synchronous machine excitation for hydro power unit  Name:
HEXT. 186
9.2.49 LN: Electrical rotating machine (synchronous/asynchronous generator,
motor or motorgenerator) for hydro power units  Name: HGEN . 187
9.2.50 LN: Hydro governor  Name: HGOV . 188
9.2.51 LN: Hydropower gate  Name: HGTE . 190
9.2.52 LN: Mechanical brake  Name: HMBR . 192
9.2.53 LN: Needle  Name: HNDL . 193
9.2.54 LN: Penstock  Name: HPSK . 196
9.2.55 LN: Pony motor starter  Name: HPYM . 197
9.2.56 LN: Hydropower water reservoir  Name: HRES. 198
9.2.57 LN: Hydro power unit LN  Name: HUNT . 199
9.2.58 LN: Hydropower valve  Name: HVLV . 203
9.3 Logical nodes for management functions (ManagementFunctions_7_410) . 205
9.3.1 General. 205
9.3.2 <> LN: Electrical aspects management function  Name:
ElectricityMgmtFunLN . 207
9.3.3 <> LN: Generating unit management function LN  Name:
GeneratingUnitMgmtFunLN . 212
9.3.4 <> LN: Mechanical machine management function
LN  Name: MechanicalMachineMgmtFunLN . 215
9.3.5 <> LN: Joint control for power management  Name:
JointControlMgmtFunLN . 216
9.3.6 <> LN: Bulk generation management function LN  Name:
BulkGenerationMgmtFunLN . 220
9.3.7 <> LN: Thermal machine management function  Name:
ThermalMachineMgmtFunLN . 221
9.3.8 LN: Electrical rotating machine management  Name: AEMC . 226
IEC 61850-7-410:2026 © IEC 2026
9.3.9 LN: Gas turbine management  Name: EGTM . 229
9.3.10 LN: Joint control for thermal power plant management  Name: EJCM . 232
9.3.11 LN: Steam turbine management  Name: ESTM. 235
9.3.12 LN: Thermal unit management  Name: EUMC . 239
9.3.13 LN: Hydro machine management  Name: HMMC . 243
9.3.14 LN: Management function for hydro device (gates, valves)  Name:
HHDM. 247
9.3.15 LN: Joint control for hydro power plant management  Name: HJCM . 251
9.3.16 LN: Hydro unit management  Name: HUMC . 256
9.4 Logical nodes for operational functions (OperationalFunctions_7_410) . 260
9.4.1 General. 260
9.4.2 <> LN: Active power operational function LN  Name:
ActivePowerOpFunLN . 266
9.4.3 <> LN: Analogue control operational function LN  Name:
AnalogueControlOpFunLN . 269
9.4.4 <> LN: Operational function for bulk generation LN  Name:
BulkGenerationOpFunLN . 273
9.4.5 <> LN: Electrical operation function LN  Name:
ElectricalOpFunLN . 274
9.4.6 <> LN: Energy operational function LN  Name:
EnergyOpFunLN . 276
9.4.7 <> LN: Excitation operational function LN  Name:
ExcitationOpFunLN . 278
9.4.8 <> LN: Flow for thermal power operational function
LN  Name: FlowForThermalPowerOpFunLN . 279
9.4.9 <> LN: Hydro operational function LN  Name:
HydroOpFunLN . 282
9.4.10 <> LN: Level operational function LN  Name: LevelOpFunLN. 284
9.4.11 <> LN: Mechanical operational function LN  Name:
MechanicalOpFunLN . 286
9.4.12 <> LN: Opening operational function LN  Name:
OpeningOpFunLN . 288
9.4.13 <> LN: Operational transition operational function  Name:
OperationalTransitionOpFunLN . 290
9.4.14 <> LN: Power factor operational function LN  Name:
PowerFactorOpFunLN . 292
9.4.15 <> LN: Power system stabilisation operational function
LN  Name: PowerSystemStabilisationOpFunLN . 294
9.4.16 <> LN: Pressure operational function LN  Name:
PressureOpFunLN . 297
9.4.17 <> LN: Reactive power operational function LN  Name:
ReactivePowerOpFunLN . 299
9.4.18 <> LN: Speed operational function LN  Name:
SpeedOpFunLN . 301
9.4.19 <> LN: State change operational function LN  Name:
StateChangeOpFunLN. 303
9.4.20 <> LN: Temperature operational function LN  Name:
TemperatureOpFunLN . 305
9.4.21 <> LN: Thermal operational function LN  Name:
ThermalOpFunLN . 307
9.4.22 <> LN: Voltage operational function LN  Name:
VoltageOpFunLN . 309
9.4.23 <> LN: Water flow operational function LN  Name:
WaterFlowOpFunLN . 311
IEC 61850-7-410:2026 © IEC 2026
9.4.24 LN: Switching control for electrical braking  Name: AEBR . 313
9.4.25 LN: Energy control operational function  Name: AENC . 314
9.4.26 LN: Minimum energy limitation operational function  Name: AENN . 316
9.4.27 LN: Maximum energy limitation operational function  Name: AENX . 318
9.4.28 LN: State/mode control for electric rotating machine  Name: AESC . 320
9.4.29 LN: Field current regulation operational function  Name: AFCR . 322
9.4.30 LN: Switching control for field flashing  Name: AFFL . 324
9.4.31 LN: Field voltage regulation operational function  Name: AFVR. 325
9.4.32 LN: Overexcitation limitation operational function  Name: AOEL . 327
9.4.33 LN: Minimum opening limitation operational function  Name: AOMN . 329
9.4.34 LN: Maximum opening limitation operational function  Name: AOMX . 331
9.4.35 LN: Opening control operational function  Name: AOPC . 333
9.4.36 LN: Power factor control operational function  Name: APFC . 335
9.4.37 LN: Power factor limitation operational function  Name: APFL . 337
9.4.38 LN: PSS 4 filter function  Name: APSF . 339
9.4.39 LN: PSS 2 filter function  Name: APST . 347
9.4.40 LN: Reactive power control operational function  Name: AQCL . 352
9.4.41 LN: Minimum reactive power limitation operational function  Name:
AQMN. 354
9.4.42 LN: Maximum reactive power limitation operational function  Name:
AQMX . 356
9.4.43 LN: Balancing reserve operation  Name: AROP . 358
9.4.44 LN: Stator current limitation operational function  Name: ASCL . 360
9.4.45 LN: Minimum speed limitation operational function  Name: ASMN . 362
9.4.46 LN: Maximum speed limitation operational function  Name: ASMX . 364
9.4.47 LN: Speed control operational function  Name: ASPC . 366
9.4.48 LN: Under excitation limitation operational function  Name: AUEL . 368
9.4.49 LN: Flux limitation operational function  Name: AVFL . 370
9.4.50 LN: Minimum voltage limitation operational function  Name: AVMN . 371
9.4.51 LN: Maximum voltage limitation operational function  Name: AVMX . 373
9.4.52 LN: Voltage control operational function  Name: AVOC . 375
9.4.53 LN: Active power control operational function  Name: AWGC . 377
9.4.54 LN: Minimum active power limitation operational function  Name:
AWMN . 380
9.4.55 LN: Maximum active power limitation operational function  Name:
AWMX . 382
9.4.56 LN: Flow control operational function for thermal power  Name: EFLC . 384
9.4.57 LN: Minimum flow limitation operational function for thermal
power  Name: EFMN . 385
9.4.58 LN: Maximum flow limitation operational function for thermal
power  Name: EFMX . 387
9.4.59 LN: Load range transition of thermal unit operational function  Name:
ELRC. 389
9.4.60 LN: Minimum pressure limitation operational function  Name: EPMN . 391
9.4.61 LN: Maximum pressure limitation operational function  Name: EPMX . 392
9.4.62 LN: Pressure control operational function  Name: EPRC . 394
9.4.63 LN: Minimum temperature limitation operational function  Name: ETMN . 396
9.4.64 LN: Maximum temperature limitation operational function  Name: ETMX . 398
9.4.65 LN: State/mode control for thermal turbine and governor  Name: ETSC . 400
9.4.66 LN: Temperature control operational function  Name: ETPC . 402
IEC 61850-7-410:2026 © IEC 2026
9.4.67 LN: State/mode control for thermal unit  Name: EUSC . 404
9.4.68 LN: Flow control operational function (hydropower)  Name: HFLC . 405
9.4.69 LN: Minimum flow limitation operational function (hydropower)  Name:
HFMN . 407
9.4.70 LN: Maximum flow limitation operational function (hydropower)  Name:
HFMX . 409
9.4.71 LN: Minimum level limitation operational function  Name: HLMN . 411
9.4.72 LN: Maximum level limitation operational function  Name: HLMX . 413
9.4.73 LN: Level control operational function  Name: HLVC . 415
9.4.74 LN: State/mode control for hydro turbine and governor  Name: HTSC . 418
9.4.75 LN: State/mode control for hydro unit  Name: HUSC . 419
9.5 Logical nodes for supporting functions (SupportingFunctions_7_410) . 421
9.5.1 General. 421
9.5.2 LN: Control mode selection  Name: ACTM . 421
9.5.3 LN: Combinator  Name: HCOM . 422
9.5.4 LN: Needle management  Name: HNDM . 424
9.5.5 LN: Hydropower sequencer  Name: HSEQ . 425
9.6 Logical nodes for monitoring functions (MonitoringFunctions_7_410) . 426
9.6.1 General. 426
9.6.2 <> LN: Machine speed monitoring  Name:
MachineSpeedMonitoringLN. 427
9.6.3 LN: Thermal turbine speed monitoring  Name: ESPD . 429
9.6.4 LN: Extension to the MFLW LN  Name: MFLWExt . 431
9.6.5 LN: Leakage supervision  Name: HLKG . 433
9.6.6 LN: Water level indicator  Name: HLVL. 434
9.6.7 LN: Water net head data  Name: HNHD . 435
9.6.8 LN: Hydro turbine speed monitoring  Name: HSPD . 436
9.7 Logical nodes for control and supervision (ControlSupervision_7_410) . 438
9.7.1 General. 438
9.7.2 <> LN: Controller function  Name: ControllerLN . 439
9.7.3 <> LN: On-Off controller function  Name: OnOffControllerLN . 440
9.7.4 <> LN: Open close controller function  Name:
OpenCloseControllerLN . 441
9.7.5 LN: Fan controller  Name: CFAN . 443
9.7.6 LN: Fluidic valve controller  Name: CFVL. 444
9.7.7 LN: Directly actuated hydraulic cylinder controller  Name: CHCY . 446
9.7.8 LN: Heater controller  Name: CHTR . 447
9.7.9 LN: Pump controller  Name: CPMP . 448
9.7.10 LN: Turning gear controller  Name: CTGR . 450
9.7.11 LN: Directly actuated valve controller  Name: CVLV . 451
9.8 Logical nodes for primary equipment (PrimaryEquipment_7_410) . 452
9.8.1 General. 452
9.8.2 <> LN: Controllable equipment  Name: ControlEqLN . 453
9.8.3 <> LN: Non-controllable equipment  Name: NonControlEqLN . 454
9.8.4 <> LN: On-off controllable equipment  Name:
OnOffControlEqLN . 455
9.8.5 <> LN: On-off non-controllable equipment  Name:
OnOffNonControlEqLN . 456
9.8.6 <> LN: Position-related controllable equipment  Name:
OpenClosedControlEqLN . 457
IEC 61850-7-410:2026 © IEC 2026
9.8.7 <> LN: Position-related non-controllable equipment  Name:
OpenClosedNonControlEqLN . 459
9.8.8 LN: Brake pad  Name: KBRP . 460
9.8.9 LN: Clutch  Name: KCTH . 461
9.8.10 LN: Deflector  Name: KDFL . 462
9.8.11 LN: Extension to the KFAN LN  Name: KFANExt . 463
9.8.12 LN: Extension to the KFIL LN  Name: KFILExt. 464
9.8.13 LN: Fluid sealing device (seal)  Name: KFSL . 466
9.8.14 LN: Fluid valve  Name: KFVL . 467
9.8.15 LN: Gate  Name: KGTE . 468
9.8.16 LN: Penstock burst protection  Name: KPBP . 469
9.8.17 LN: Extension to the KPMP LN  Name: KPMPExt . 471
9.8.18 LN: Mechanical rotational speed protection  Name: KSPP . 472
9.8.19 LN: Hydraulic cylinder  Name: KHCY. 473
9.8.20 LN: Heater  Name: KHTR . 474
9.8.21 LN: Turning-gear  Name: KTGR . 476
9.8.22 LN: Guide vane (wicket gate)  Name: KTGV. 477
9.8.23 LN: Extension to the KTNK LN  Name: KTNKExt . 478
9.8.24 LN: Runner blade  Name: KTRB . 479
9.8.25 LN: Extension to the KVLV LN  Name: KVLVExt . 480
9.8.26 LN: Valve seal  Name: KVSL . 482
9.8.27 LN: Synchronous machine armature (stator)  Name: ZSMA . 483
9.8.28 LN: Synchronous machine field (rotor)  Name: ZSMF . 484
9.8.29 LN: Semi-conductor uncontrolled rectifier  Name: ZSUR . 485
9.9 Logical nodes for functional blocks (FunctionalBlocks_7_410) . 486
9.9.1 General. 486
9.9.2 LN: Deadband filter  Name: FDBF . 487
9.9.3 LN: Functional heart beat  Name: FHBT . 488
9.9.4 LN: Trip matrix  Name: FMTX . 489
9.9.5 LN: Functional priority status  Name: FXPS . 491
9.10 Logical nodes for generic function references (GenericFunctionRefs_7_410) . 492
9.10.1 General. 492
9.10.2 LN: Generic restriction tag  Name: GRST . 493
9.10.3 LN: Generic lockout/tagout for maintenance and/or operation  Name:
GTMO. 494
9.10.4 LN: Task manager  Name: GTSK . 496
9.11 Logical nodes for interfacing and archiving (NonProcessInterfaces_7_410) . 497
9.11.1 General. 497
9.11.2 LN: Fire detection and alarm  Name: IFIR . 497
9.11.3 LN: Hand interface   Name: IHND . 498
9.11.4 <> LN: Alarm trip control  Name: AlarmTripControlLN . 500
9.12 Logical nodes for protections of power plants (Protections_7_410) . 501
9.12.1 General. 501
9.12.2 LN: Detection of under impedance  Name: PTUI . 502
9.13 Logical nodes for supervision and monitoring (SupervisionFunctions_7_410) . 503
9.13.1 General. 503
9.13.2 <> LN: Media supervision  Name: MediaSupervisionLN . 505
9.13.3 LN: Brake pad supervision  Name: SBRP . 507
9.13.4 LN: Electrical conductivity in water supervision  Name: SECW . 508
...