ABB 615 Series - Page 551

A
B
C
1/5A
N
1/5A
N
1/5A
N
I_CI_BI_A
P2
P1
S1S2
1/5A
N
IG
P1P2
S1
S2
GUID-F72BF76A-0864-4A98-A352-D597C5864AD8 V1 EN
Figure 272: Connection of the current transformers of Type 2. The phase currents
and the neutral current have equal directions at an external ground-fault
situation. Phase grounding is inside and neutral grounding is outside the
area to be protected.
A
B
C
1/5A
N
1/5A
N
1/5A
N
I_AI_BI_C
P1 P2
S1
S2
1/5A
N
IG
P2P1
S1
S2
GUID-D870C784-0241-4DC6-B937-B27850200227 V1 EN
Figure 273: Connection of the current transformers of Type 2. The phase currents
and the neutral current have equal directions at an external ground-fault
situation. Phase grounding is outside and neutral grounding is inside the
area to be protected.
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 545
Technical Manual