ABB RELION REX640 - Page 641

Parameter Values (Range) Unit Step Default Description
3=No validity
EF validity Min Curr 0.005...0.200 *In 0.001 0.010 Minimum current
for EF validity eval-
uation. Note that
In means residual
nominal current.
Ena cyclic reset
0=Disable
1=Enable
1=Enable Enable adaptation
of fault direction
determination to
a fault direction
change during the
fault
Intr EF reset time 40...60000 ms 10 500 Reset delay time
used in intermit-
tent earth fault
module
Table 641: IFPTOC Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation
1=on
5=off
1=on Operation Off / On
Operation principle
1=EF current based
2=Touch voltage
based
2=Touch voltage
based
Operation principle
Enable harmonics
0=Disable
1=Enable
0=Disable Enable harmonics
for fault current
calculation
Operation mode
1=Alarming EF
2=Tripping EF
2=Tripping EF Operation criteria
Enable XC Op mode
1=on
5=off
1=on Enable cross-coun-
try fault tripping
functionality
Reset delay time 0...6000 ms 10 20 Reset delay time
Ena Intermit EF
mode
1=on
5=off
1=on Enable intermittent
earth fault module
Enable SOTF mode
1=on
5=off
1=on Enable Switch-On-
To-Fault logic mod-
ule
SOTF Cond dura-
tion
100...16000 ms 10 2000 Switch-On-To-Fault
module duration
SOTF operate time 40...6000 ms 10 60 Switch-On-To-Fault
module operate de-
lay time
Table 642: IFPTOC Non group settings (Advanced)
Parameter
Values (Range) Unit Step Default Description
SOTF reset time 100...10000 ms 10 500 Reset delay time
for Switch-OnTo-
Fault (SOTF) mod-
ule
Revert time 200...10000 ms 10 300 Revert time for del-
ta-calculation
Max Dur delta Calc 300...10000 ms 10 2000 Maximum duration
for delta calcula-
tion
Intr EF counter Lim 3...20 1 3 Peak counter lim-
it for discrimina-
tion of intermittent
earth fault from
Table continues on the next page
1MRS759142 F Protection functions
REX640
Technical Manual
641