ABB INSITE PRO M COMPACT SCU100 - Page 28

Three phase plus neutral
L1
L1
L2
L2
L3
L3
N
N
l1
A B A B A B A B
l2 l3 l4/N
L1
A B
N
S1 S2
P1 P2
Supply
Attention: Please, referring to the diagram in the figure aside, notice that N on the supply has to be
connected in order to avoid damage of the device.
Attention: Make sure that N is not mixed up with the phases L1, L2, L3.
Attention: CT output should not be connected to the earth. It is not possible to connect more than one
SCU in series with the same CT.
Single phase neutral
L1
L1
L2
L2
L3
L3
N
N
l1
A B A B A B A B
l2 l3 l4/N
L1
A B
N
S1 S2
P1 P2
Supply
Attention: Please, referring to the diagram in the figure aside, notice that N on the supply has to be
connected in order to avoid damage of the device.
Attention: Make sure that N is not mixed up with the phases L1, L2, L3.
Attention: CT output should not be connected to the earth. It is not possible to connect more than one
SCU100 in series with the same CT.
28 SCU100 INSITE PRO M COMPACT USER MANUAL