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 has 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 reassembly
through the data link layer.
2. Ingression protection, according to IEC 60529
IP 20
Ingression protection, according to IEC 60529, level 20
IP 40
Ingression protection, according to IEC 60529, level 40
IP 54
Ingression protection, according to IEC 60529, level 54
IRF
Internal failure 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 data communication module
LDD
Local detection device
LED
Light-emitting diode
LNT
LON network tool
LON
Local operating network
MCB
Miniature circuit breaker
MCM
Mezzanine carrier module
MPM
Main processing module
MVAL
Value of measurement
MVB
Multifunction vehicle bus. Standardized serial bus
originally developed for use in trains.
NCC
National Control Centre
1MRK 506 383-UEN A
Section 13
Glossary
Line distance protection REL650 2.2 IEC
195
Commissioning manual
Содержание REL650 series
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