36
SOCOMEC - Ref. : 875 508A
N
P1
S1
L1 (R)
L2 (S)
L3 (T)
FUSES
110 to 440 V AC
120 to 350 V DC
0,5 A
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
P1
S1
L1 (R)
L2 (S)
L3 (T)
FUSES
110 to 440 V AC
120 to 350 V DC
2 A
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
BALANCED THREE-PHASE NETWORK (3 LB)
TWO-PHASE NETWORK (2 LB)
SINGLE-PHASE NETWORK (1 LB)
Recommendations:
Each CT’s secondary winding must
be short-circuited when disconnec-
ting the Diris Am. This can be done
automatically using one of Socomec’s
catalogue products: the PTI. Please
contact us for further information.
P1
S1
L1 (R)
L2 (S)
FUSES
110 to 440 V AC
120 to 350 V DC
2 A
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
N
P1
S1
L1 (R)
FUSES
110 to 440 V AC
120 to 350 V DC
2 A
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
DIRIS 283 A GB
DIRIS 282 A GB
DIRIS 285 A GB
DIRIS 284 A GB
L1 (R)
L2 (S)
L3 (T)
FUSES
110 to 440 V AC
120 to 350 V DC
2 A
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
P1
S1
P1
S1
A
A
A
a
a
a
L1 (R)
L2 (S)
L3 (T)
110 to 440 V AC
120 to 350 V DC
S2 S1 S2 S1 S2
S1
I2
I3
I1
V1
V2 V3 VN
AUX
P1
S1
P1
S1
DIRIS 278 A GB
DIRIS 279 A GB
UNBALANCED THREE-PHASE NETWORK (3 LNB)
NB:
The solution using one CT, with the
3rd phase current calculated via vec-
toral summation, results in an 0.5%
reduction in phase accuracy.
