10
Introduction to the technical reference manual
Chapter 1
Introduction
INSTNAME
Instance name in signal matrix tool
IOM
Binary Input/Output module
IPOSIM
Imaginary part of positive sequence current
IPOSRE
Real component of positve sequence current
IP 20
Enclosure protects against solid foreign objects 12.5mm in diameter and
larger but no protection against ingression of liquid according to
IEC60529. Equivalent to NEMA type 1.
IP 40
Enclosure protects against solid foreign objects 1.0mm in diameter or
larger but no protection against ingression of liquid according to
IEC60529.
IP 54
Degrees of protection provided by enclosures (IP code) according to
IEC 60529. Dust protected. Protected against splashing water. Equiva-
lent to NEMA type 12.
Ip>block
Block of the function at high phase current in percentage of base
IRVBLK
Block of current reversal function
IRV
Activation of current reversal logic
ITU
International Telecommunications Union
k2
Time multiplier in IDMT mode
kForIEEE
Time multiplier for IEEE inverse type curve
LAN
Local area network
LIB 520
LCD
Liquid chrystal display
LDCM
Line differential communication module
LDD
Local detection device
LED
Light emitting diode
LNT
LON network tool
LON
Local operating network
MAGN
Magnitude of deadband value
MCB
Miniature circuit breaker
MCM
Mezzanine carrier module
MIM
Milliampere Input Module
MIP
MPPS
MPM
Main processing module
MV
Medium voltage
MVB
Multifunction vehicle bus. Standardized serial bus originally developed
for use in trains
MVsubEna
Enable substitution
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......