Standards Development

Scope

This part of IEC 61850 specifies the information model of devices and functions generally related to common use regarding applications in systems for power utility automation. In particular, it specifies the compatible logical node names and data object names for communication between intelligent electronic devices (IED). This includes the relationship between logical nodes and data objects.

The logical node names and data object names defined in this document are part of the class model introduced in IEC 61850-7-1 and defined in IEC 61850-7-2. These names are used to build the hierarchical object references applied for communicating with IEDs in systems for power utility automation and, especially, with IEDs in substations and on distribution feeders. The naming conventions of IEC 61850-7-2 are applied in this part.

To avoid private, incompatible extensions, this part specifies normative naming rules for multiple instances and private, compatible extensions of logical node (LN) classes and data object names. Any definition is based on IEC 61850 or on referenced well identified public documents.

This section does not include tutorial material. It provides content that assumes prior knowledge of IEC 61850-5 and IEC 61850-7-1, together with IEC 61850-7-3 and IEC 61850-7-2.This standard and its direct counterparts (7-4, 7-4n and 7-4nn) are applicable to describe device models and functions for:

• substation and feeder equipment,

• substation-to-substation information exchange,

• substation-to-control centre information exchange,

• power plant-to-control centre information exchange,

• information exchange for distributed generation,

• information exchange for distributed energy resources,

• information exchange for metering,

• information exchanged for hydro power plants,

• or information exchange for wind generation plants.

Figure 1 provides a general overview of this standard, the groups of logical nodes and the new structure after the split. For convenience, the logical nodes are defined below in alphabetical order within its part.

Figure 2 gives an overview of the annexes used in the series of 7-4, 7-4n and 7-4nn.

Figure 1 – Overview of this standard and relation of 7-4, 7-4n and 7-4nn series

Figure 2 – Overview of the annexes in 7-4, 7-4n and 7-4nn series

Table 2 provides a reference between all published editions, amendments or corrigenda of this document and the full name of the namespace.

Table 2 - Published versionEdition Publication date Webstore Namespace Edition 1.0 20nn-nn IEC 61850-7-43:20nn IEC 61850-7-43:2025A3

Table 3 shows all attributes of IEC 61850-7-43:2025A namespace.

Table 3 – Attributes of IEC 61850-7-43:2025A namespaceAttribute Content Namespace nameplate Namespace Identifier IEC 61850-7-43 Version 2025 Revision A Release 3 Full Namespace Name IEC 61850-7-43:2025A Full Code Component Name IEC_61850-7-43.NSD.2025A.Full Light Code Component Name IEC_61850-7-43.NSD.2025A.Light Namespace Type domain Namespace dependencies includes IEC 61850-7-40:2025A version :2025 revision :A

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 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) allows publication of Code Component in case of urgent fixes of InterOp Tissues, thus without need to publish an amendment.

Consequently, new releases of the Code Component might be released, which supersedes the previous release, and will be distributed through the IEC TC57 web site at:

https://www.iec.ch/tc57/supportdocuments

The code component associated to this document is a nsd file. It is available as a full version and a light version. The light version is freely accessible on the IEC website for download at https://www.iec.ch/tc57/supportdocuments, but the usage remains under the licensing conditions.

The latest version/release of the code component will be found by selecting the file for the code component with the highest value for VersionStateInfo, e.g. IEC_61850-6-100.XSD.{VersionStateInfo}.full.zip

In case of any differences between the downloadable code component and the IEC pdf published content, the downloadable code component is the valid one; it might be subject to updates. See included history files.