ABB RELION REX640 Installation Manual page 77

1MRS759115 E
Positive
Current
Direction
Figure 71: SIM1901 module (VT primary connection phase-to-earth)
REX640
Installation Manual
L1 L2 L3
s1
s2
s1
s2
s1
s2
P1
S1
S2
P2
SIM1901
X1
4
Sensor I
5
DFF
7
Sensor U
8
DFF
X2
4
Sensor I
5
DFF
7
Sensor U
8
DFF
X3
4
Sensor I
5
DFF
7
Sensor U
8
DFF
X4
57-240
1
VT
N
2
0.2/1A
3
(for residual
CT
N
4 current only)
Connecting
77