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Standard I/O Modules
72
Unrestricted
SICAM A8000 Series, SICAM I/O Modules
DC8-012-2.06, Edition 09.2019
2.9.6.3.1 3-Phase Voltage, 3-Phase Current
Through the current inputs I1, I2/IN, I3 the corresponding phase currents are measured. The
value IN is calculated.
This configuration is used for solidly grounded networks. In this configuration, the module
works also as a power meter.
Example: Middle-voltage network
2.9.6.3.2 3-Phase Voltage, 2-Phase C Sensitive Ground Current
Through the current inputs I1, I3 the corresponding phase currents are measured, I2/IN is
connected with the sensitive ground current transformer. The value I2 is calculated.
This configuration is used for isolated and resonant grounded networks.
Example: Middle-voltage network
P2
P1
P2
P1
P2
P1
S2
S1
S2
S1
S2
S1
2
2
5
m
V
2
2
5
m
V
2
2
5
m
V
B
A
B
A
B
A
b
a
b
a
b
a
3
,2
5
V
/
√
3
3
,2
5
V
/
√
3
3
,2
5
V
/
√
3
2
0
k
V
2
0
k
V
2
0
k
V
N
L3
L2
L1
AI-8511
X
2
1
2
3
4
5
6
7
8
9
X
1
1
2
3
4
5
6
7
8
9
1
0
D
N
C
I3
-
I3
+
I1
-
I1
+
D
N
C
D
N
C
D
N
C
N
N
N
D
N
C
I2
-/
IN
+
I2
-/
IN
-
U
3
U
2
U
1
F
E
S
h
ie
ld
C
C
S
h
ie
ld
P2
P1
P2
P1
P2
P1
S2
S1
S2
S1
S2
S1
2
2
5
m
V
2
2
5
m
V
2
2
5
m
V
B
A
B
A
B
A
b
a
b
a
b
a
3
,2
5
V
/
√
3
3
,2
5
V
/
√
3
3
,2
5
V
/
√
3
2
0
k
V
2
0
k
V
2
0
k
V
N
L3
L2
L1
AI-8511
X
2
1
2
3
4
5
6
7
8
9
X
1
1
2
3
4
5
6
7
8
9
1
0
D
N
C
I3
-
I3
+
I1
-
I1
+
D
N
C
D
N
C
D
N
C
N
N
N
D
N
C
I2
-/
IN
+
I2
-/
IN
-
U
3
U
2
U
1
F
E
S
h
ie
ld
C
C
S
h
ie
ld