ABB Relion 620 Series - Page 452

4.2.4.7 Signals
Table 436: EFPADM Input signals
Name Type Default Description
Io SIGNAL 0 Residual current
Uo SIGNAL 0 Residual voltage
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
RELEASE BOOLEAN 0=False External trigger to re-
lease neutral admit-
tance protection
Table 437: EFPADM Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
4.2.4.8 Settings
Table 438: EFPADM Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Voltage start value 0.01...2.00 xUn 0.01 0.15 Voltage start value
Directional mode
1=Non-directional
2=Forward
3=Reverse
2=Forward Directional mode
Operation mode
1=Yo
2=Go
3=Bo
4=Yo, Go
5=Yo, Bo
6=Go, Bo
7=Yo, Go, Bo
1=Yo Operation criteria
Operate delay time 60...200000 ms 10 60 Operate delay time
Circle radius 0.05...500.00 mS 0.01 1.00 Admittance circle
radius
Circle conductance -500.00...500.00 mS 0.01 0.00 Admittance circle
midpoint, conduc-
tance
Circle susceptance -500.00...500.00 mS 0.01 0.00 Admittance circle
midpoint, suscep-
tance
Conductance for-
ward
-500.00...500.00 mS 0.01 1.00 Conductance
threshold in for-
ward direction
Conductance re-
verse
-500.00...500.00 mS 0.01 -1.00 Conductance
threshold in re-
verse direction
Table continues on the next page
Protection functions 1MRS757644 H
452 620 series
Technical Manual