ABB Relion 620 Series - Page 555

Parameter Values (Range) Unit Step Default Description
Zro A elimination
1=Not eliminated
2=Winding 1
3=Winding 2
4=Winding 1 and 2
1=Not eliminated Elimination of the
zero-sequence cur-
rent
CT ratio Cor Wnd 1 0.40...4.00 0.01 1.00 CT ratio correction,
winding 1
CT ratio Cor Wnd 2 0.40...4.00 0.01 1.00 CT ratio correction,
winding 2
Table 489: TR2PTDF Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
Min winding tap -36...36 1 36 The tap position
number resulting
the minimum num-
ber of effective
winding turns on
the side of the
transformer where
the tap changer is.
Max winding tap -36...36 1 0 The tap position
number resulting
the maximum num-
ber of effective
winding turns on
the side of the
transformer where
the tap changer is.
Tap nominal -36...36 1 18 The nominal posi-
tion of the tap
changer resulting
the default trans-
formation ratio of
the transformer (as
if there was no tap
changer)
Tapped winding
1=Not in use
2=Winding 1
3=Winding 2
1=Not in use The winding where
the tap changer is
connected to
Step of tap 0.60...9.00 % 0.01 1.50 The percentage
change in voltage
corresponding one
step of the tap
changer
4.3.2.9 Monitored data
Table 490: TR2PTDF Monitored data
Name
Type Values (Range) Unit Description
OPR_A BOOLEAN
0=False
1=True
Operate phase A
OPR_B BOOLEAN
0=False
1=True
Operate phase B
OPR_C BOOLEAN
0=False
1=True
Operate phase C
Table continues on the next page
1MRS757644 H Protection functions
620 series
Technical Manual
555