socomec DIRIS A20 Manual Del Usuario página 6

DIRIS A20
inSTallaTiOn
UnBALAnCeD THRee-PHASe neTwOrK (3nBL / 4nBL)
The solution with 2 CTs with the phase current calcula-
ted via vectoral summation, results in an 0.5% reduction
in phase accuracy.
In IT load, do not connect the secondary of CTs
with the earth
 Aux.: ieC/Ce
UL
 Fus.: 0.5AgG/BS882AgG/0.5AclassCC
6 DIRIS A20 - Ref.: 538848 A
110... 400V AC
120... 350V DC
110... 240V AC
120... 250V DC
I1 I2 I3
S1 S2 S1 S2 S1 S2 V1 V2 V3 VN
S1
P1
S1
P1
S1
P1
I1 I2 I3
S1 S2 S1 S2 S1 S2 V1 V2 V3 VN
S1
P1
S1
P1
I1 I2 I3
S1 S2 S1 S2 S1 S2 V1 V2 V3 VN
S1
P1
S1
P1
I1 I2 I3
S1 S2 S1 S2 S1 S2 V1 V2 V3 VN
S1
P1
S1
P1
S1
P1
AUX
2
1
2
L1 ( R )
L2 ( S )
L3 ( T )
N
AUX
2
1
2
L1 ( R )
L2 ( S )
L3 ( T )
AUX
2
1
2
L1 ( R )
L2 ( S )
L3 ( T )
AUX
2
1
2
L1 ( R )
L2 ( S )
L3 ( T )