ABB RELION REX640 Technical Manual page 702

Protection functions
Vector group of
the transformer
Dz2
Dzn2
Dz4
Dzn4
Dz6
Dzn6
Dz8
Dzn8
Dz10
Dzn10
Zd0
ZNd0
Zd2
ZNd2
Zd4
ZNd4
Zd6
ZNd6
Zd8
ZNd8
Zd10
ZNd10
Zz0
ZNz0
ZNzn0
Zzn0
Zz2
ZNz2
ZNzn2
Zzn2
Zz4
ZNz4
ZNzn4
Zzn4
Zz6
ZNz6
ZNzn6
Table continues on the next page
702
Winding 1 type Winding 2 type
D z
D zn
D z
D zn
D z
D zn
D z
D zn
D z
D zn
Z d
ZN d
Z d
ZN d
Z d
ZN d
Z d
ZN d
Z d
ZN d
Z d
ZN d
Z z
ZN z
ZN zn
Z zn
Z z
ZN z
ZN zn
Z zn
Z z
ZN z
ZN zn
Z zn
Z z
ZN z
ZN zn
1MRS759142 F
Clock number Zro A
Elimination
Clk Num 2 Not needed
Clk Num 2 Not needed
Clk Num 4 Not needed
Clk Num 4 Not needed
Clk Num 6 Not needed
Clk Num 6 LV side
Clk Num 8 Not needed
Clk Num 8 Not needed
Clk Num 10 Not needed
Clk Num 10 Not needed
Clk Num 0 Not needed
Clk Num 0 HV side
Clk Num 2 Not needed
Clk Num 2 Not needed
Clk Num 4 Not needed
Clk Num 4 Not needed
Clk Num 6 Not needed
Clk Num 6 HV side
Clk Num 8 Not needed
Clk Num 8 Not needed
Clk Num 10 Not needed
Clk Num 10 Not needed
Clk Num 0 Not needed
Clk Num 0 HV side
Clk Num 0 HV & LV side
Clk Num 0 LV side
Clk Num 2 Not needed
Clk Num 2 Not needed
Clk Num 2 Not needed
Clk Num 2 Not needed
Clk Num 4 Not needed
Clk Num 4 Not needed
Clk Num 4 Not needed
Clk Num 4 Not needed
Clk Num 6 Not needed
Clk Num 6 HV side
Clk Num 6 HV & LV side
Technical Manual
REX640