ABB 615 series Technical Manual page 551

1MAC059074-MB A
615 series ANSI
Technical Manual
P2
A
S2 S1
B
C
1/5A 1/5A 1/5A
N N N
I_A I_B I_C
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.
P1 P2
A
S1 S2
B
C
1/5A 1/5A 1/5A
N N N
I_C I_B I_A
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.
P1
Section 4
Protection functions
P2 P1
S2 S1
1/5A
N
IG
P1 P2
S1 S2
1/5A
N
IG
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