ABB 615 Series - Signals

ABC
1/5A
N
1/5A
N
1/5A
N
HV
MV
IAB
IBB
ICB
1/5A
N
1/5A
N
1/5A
N
IA
IB
IC
P1
P2
P1
P2
S1
S2
S1
S2
GUID-74AC5F89-612E-48E5-9F8F-01939241CD3C V1 EN
Figure 265: Alternative connection example of current transformers of Type 2
The CT secondary currents often differ from the rated current at the rated load of the power
transformer. The CT transforming ratios can be corrected on both sides of the power
transformer with the CT ratio Cor Wnd 1 and CT ratio Cor Wnd 2 settings.
4.3.2.7 Signals
Table 433: 87T Input signals
Name
Type Default Description
I_A(1) SIGNAL 0 Phase A primary current
I_B(1) SIGNAL 0 Phase B primary current
I_C(1) SIGNAL 0 Phase C primary current
I_A(2) SIGNAL 0 Phase A secondary current
I_B(2) SIGNAL 0 Phase B secondary current
Table continues on next page
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 531
Technical Manual