ABB RELION REX640 Technical Manual page 640

Protection functions
Parameter Values (Range)
DT stage Op time 100...60000
IDMT stage Min Op 50...6000
Tm
IDMT stage Max Op 500...7200000
Tm
UTp multiplier 0.10...5.00
Reduction factor 0.10...1.00
Maximum earthing 0.5...1000.0
Ris
IEEE multiplier 50.0...5000.0
XC stage A Str Val 0.10...5.00
XC stage PP V Val 0.01...1.00
XC stage Op time 60...60000
Intr EF operate 100...10000
time
Table 640: IFPTOC Group settings (Advanced)
Parameter Values (Range)
EF validity Op
1=Resistive
mode
2=Resistive, Reac-
tive
Table continues on the next page
640
Unit Step
ms 10
ms 10
ms 10
0.01
0.01
ohm 0.1
0.1
xIn 0.01
xUn 0.01
ms 10
ms 10
Unit Step
1MRS759142 F
Default Description
500 Operate delay time
for Touch volt-
age/fault current
estimation module,
DT timer
100 Minimum operate
delay for touch
voltage/fault cur-
rent estimation
module IDMT tim-
er according to
standard EN50522/
IEEE80
10000 Maximum operate
delay for touch
voltage/fault cur-
rent estimation
module IDMT tim-
er according to
standard EN50522/
IEEE80
1.00 UTp multiplier for
IDMT curve accord-
ing to standard
EN50522
1.00 Reduction factor
in the touch volt-
age/fault current
estimation mod-
ule according to
standard EN50522/
IEEE80
10.0 Maximum earthing
resistance encoun-
tered in the protec-
ted feeder in pri-
mary ohms accord-
ing to standard
EN50522/IEEE80
157.0 Multiplier accord-
ing to standard
IEEE80
1.00 Current threshold
for cross-country
fault module. Note
that In means
phase nominal cur-
rent
0.90 Phase-to-phase
voltage threshold
for cross-country
fault detection
module. Note that
Un means phase to
phase nominal volt-
age.
200 Operate delay time
for cross-country
fault detection
stage
1000 Operate delay time
during intermittent
earth fault
Default Description
2=Resistive, Reac- EF validity opera-
tive tion mode
Technical Manual
REX640