121
Current reversal and weak end infeed logic for
residual overcurrent protection (EFCA)
Chapter 5
Current
5.5
Input and output signals
Table 127: Input signals for the EFCA (EFCA-) function block
Path in local HMI: ServiceReport/Functions/EarthFault/ComIRevWeiEF/FuncOutputs
Table 128: Output signals for the EFCA (EFCA-) function block
5.6
Setting parameters
Path in local HMI: Settings/Functions/Groupn/EarthFault/ComIRevWeiEF
Table 129: Setting parameters for the current reversal and weak end infeed logic for re-
sidual overcurrent protection EFCA (EFCA-) function
Signal
Description
BLOCK
Blocking of function
IRV
Activation of current reversal logic
IRVBLK
Blocking of current reversal logic
WEIBLK
Blocking of weak end infeed logic
CRL
Carrier received for weak end infeed logic
CBOPEN
Blocking of trip when breaker is open
Signal
Description
TRWEI
Trip by weak end infeed logic
IRVL
Operation of current reversal logic
ECHO
Carrier send by weak end infeed logic
Parameter
Range
Default
Unit
Description
CurrRev
Off, On
Off
-
Operating mode for current reversal logic
tPickUp
0.000-60.000
Step: 0.001
0.000
s
Current reversal pickup timer
tDelay
0.000-60.000
Step: 0.001
0.100
s
Current reversal delay timer
WEI
Off, Trip,
Echo
Off
-
Operating mode of weak end infeed logic
U>
5-70
Step: 1
25
% of U1b
Operate phase voltage for WEI trip
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: ......