ABB RELION REX640 Technical Manual page 659

1MRS759142 F
Vector group of
the transformer
Zero-sequence component elimination
Clock number is "Clk Num 2", "Clk Num 4", "Clk Num 8" or "Clk Num 10", the vector
If
group matching is always done on both, winding 1 and winding 2. The combination
results in the correct compensation. In this case the zero-sequence component is
always removed from both sides automatically. The
cannot change this.
REX640
Technical Manual
Winding 1 type
ZNd4 ZN
Zd6 Z
ZNd6 ZN
Zd8 Z
ZNd8 ZN
Zd10 Z
ZNd10 ZN
Zz0 Z
ZNz0 ZN
ZNzn0 ZN
Zzn0 Z
Zz2 Z
ZNz2 ZN
ZNzn2 ZN
Zzn2 Z
Zz4 Z
ZNz4 ZN
ZNzn4 ZN
Zzn4 Z
Zz6 Z
ZNz6 ZN
ZNzn6 ZN
Zzn6 Z
Zz8 Z
ZNz8 ZN
ZNzn8 ZN
Zzn8 Z
Zz10 Z
ZNz10 ZN
ZNzn10 ZN
Zzn10 Z
Winding 2 type Phase shift
d
d
d
d
d
d
d
z
z
zn
zn
z
z
zn
zn
z
z
zn
zn
z
z
zn
zn
z
z
zn
zn
z
z
zn
zn
Zro A elimination parameter
Protection functions
Zero sequence
current
elimination
4 (Automatic)
6 Not needed
6 HV side
8 Not needed
8 (Automatic)
10 Not needed
10 (Automatic)
0 Not needed
0 HV side
0 HV & LV side
0 LV side
2 Not needed
2 (Automatic)
2 (Automatic)
2 (Automatic)
4 Not needed
4 (Automatic)
4 (Automatic)
4 (Automatic)
6 Not needed
6 HV side
6 HV & LV side
6 LV side
8 Not needed
8 (Automatic)
8 (Automatic)
8 (Automatic)
10 Not needed
10 (Automatic)
10 (Automatic)
10 (Automatic)
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