ABB RELION REX640 Technical Manual page 630

Section 4
Protection functions
Table 586: TR2PTDF Non group settings (Basic)
Parameter
Operation
CT connection type
Winding 1 type
Winding 2 type
Clock number
Zro A elimination
CT ratio Cor Wnd 1
CT ratio Cor Wnd 2
Table 587: TR2PTDF Non group settings (Advanced)
Parameter
Min winding tap
Max winding tap
Tap nominal
Tapped winding
Step of tap
624
Values (Range) Unit
1=on
5=off
1=Type 1
2=Type 2
1=Y
2=YN
3=D
4=Z
5=ZN
1=y
2=yn
3=d
4=z
5=zn
0=Clk Num 0
1=Clk Num 1
2=Clk Num 2
4=Clk Num 4
5=Clk Num 5
6=Clk Num 6
7=Clk Num 7
8=Clk Num 8
10=Clk Num 10
11=Clk Num 11
1=Not eliminated
2=Winding 1
3=Winding 2
4=Winding 1 and 2
0.40...4.00
0.40...4.00
Values (Range) Unit
-36...36
-36...36
-36...36
1=Not in use
2=Winding 1
3=Winding 2
0.60...9.00 %
Step Default
1=on
1=Type 1
1=Y
1=y
0=Clk Num 0
1=Not eliminated
0.01 1.00
0.01 1.00
Step Default
1 36
1 0
1 18
1=Not in use
0.01 1.50
1MRS759142 C
Description
Operation Off/On
CT connection type. Determined by the
directions of the connected current
transformers
Connection of the HV side windings
Connection of the LV side windings
Setting the phase shift between HV and
LV with clock number for connection
group compensation (e.g. Dyn11 -> 11)
Elimination of the zero-sequence current
CT ratio correction, winding 1
CT ratio correction, winding 2
Description
The tap position number resulting the
minimum number of effective winding
turns on the side of the transformer where
the tap changer is.
The tap position number resulting the
maximum number of effective winding
turns on the side of the transformer where
the tap changer is.
The nominal position of the tap changer
resulting the default transformation ratio
of the transformer (as if there was no tap
changer)
The winding where the tap changer is
connected to
The percentage change in voltage
corresponding one step of the tap changer
Technical Manual
REX640