ABB REC670 Operator's Manual page 110

Section 15
Glossary
104
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
1MRK 511 188-UEN C
Operator's manual