Ground
The conductive ground whose electric potential can be set equal to 0 at every point. In the area of grounding
conductors, the ground can have a potential diverging from 0. The term reference ground is also used for
this situation.
Grounding
The grounding is the entirety of all means and measuring for grounding.
GSDML
General Station Description Mark-up Language
Hierarchy Level
In a structure with superordinate and subordinate objects, a hierarchy level is a level of equal-ranking objects.
High Availability Seamless Redundancy Protocol
Like PRP (Parallel Redundancy Protocol), HSR (High Availability Seamless Redundancy Protocol) is specified in
IEC 62439-3. Both protocols offer redundancy without switching time.
The principal function can be found in the definition of PRP. With PRP, the same indication is sent via 2 sepa-
rated networks. In contrast to this, in the case of HSR the indication is sent twice in the 2 directions of the ring.
The recipient receives it correspondingly via 2 paths in the ring, takes the 1st message and discards the 2nd
(see PRP).
Whereas NO indications are forwarded in the end device in the case of PRP, a switch function is installed in the
HSR node. Thus, the HSR node forwards indication in the ring that are not directed at it.
In order to avoid circular messages in the ring, corresponding mechanisms are defined in the case of HSR.
SAN (Single Attached Node) end devices can only be connected with the aid of a REDBOX in the case of HSR.
PRP systems and HSR systems can be coupled redundantly with 2 REDBOXES.
HMI
Human-Machine Interface
HSR
High Availability Seamless Redundancy Protocol
HV bay description
The HV project description file contains data concerning which bays are present within a ModPara project. The
actual bay information is saved for each bay in an HV bay description file. Within the HV project description
file, each bay receives an HV bay description file through a reference to the file name.
HV Project Description
If the configuring and parameterization of PCUs and submodules is completed with ModPara, all the data will
be exported. The data is distributed to several files during this process. A file contains data on the basic project
structure. This typically includes information on which bays are present within this project. This file is desig-
nated as an HV project description file.
ICD
IED Capability Description
IEC
International Electrotechnical Commission
Glossary
1622 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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