IEC 60870-5-103
Communication standard for protective equipment. A serial
master/slave protocol for point-to-point communication
IEC 61850
Substation Automation communication standard
IEEE
Institute of Electrical and Electronics Engineers
IEEE 802.12
A network technology standard that provides 100 Mbits/s on
twisted-pair or optical fiber cable
IEEE P1386.1
PCI Mezzanine card (PMC) standard for local bus modules.
References the CMC (IEEE P1386, also known as Common
mezzanine card) standard for the mechanics and the PCI
specifications from the PCI SIG (Special Interest Group) for
the electrical EMF Electro Motive Force.
IED
Intelligent electronic device
I-GIS
Intelligent gas insulated switchgear
IOM
Binary input/output module
Instance
When several occurrences of the same function are available
in the IED they are referred to as instances of that function.
One instance of a function is identical to another of the same
kind but will have a different number in the IED user
interfaces. The word instance is sometimes defined as an item
of information that is representative of a type. In the same way
an instance of a function in the IED is representative of a type
of function.
IP
1. Internet protocol. The network layer for the TCP/IP protocol
suite widely used on Ethernet networks. IP is a connectionless,
best-effort packet switching protocol. It provides packet
routing, fragmentation and re-assembly through the data link
layer.
2. Ingression protection according to IEC standard
IP 20
Ingression protection, according to IEC standard, level 20
IP 40
Ingression protection, according to IEC standard, level 40
IP 54
Ingression protection, according to IEC standard, level 54
IRF
Internal fail signal
IRIG-B:
InterRange Instrumentation Group Time code format B,
standard 200
ITU
International Telecommunications Union
LAN
Local area network
LIB 520
High voltage software module
LCD
Liquid crystal display
LDCM
Line differential communication module
LDD
Local detection device
Section 15
Glossary
88
Operator's manual
1MRK504049-UEN rev. D
RET 670
