ABB REC670 Applications Manual page 72

Section 4
Analog inputs
66
ANSI06000196 V1 EN-US
Figure 11: Example how to set CT_WyePoint parameters in the IED
For busbar protection, it is possible to set the CT_WyePoint parameters in two ways.
The first solution will be to use busbar as a reference object. In that case for all CT
inputs marked with 1 in Figure 11, set CT_WyePoint = ToObject, and for all CT inputs
marked with 2 in Figure 11, set CT_WyePoint = FromObject.
The second solution will be to use all connected bays as reference objects. In that case
for all CT inputs marked with 1 in Figure 11, set CT_WyePoint = FromObject, and for
all CT inputs marked with 2 in Figure 11, set CT_WyePoint = ToObject.
Busbar
Busbar
Protection
1
2
1MRK 511 401-UUS A
2
1
en06000196_ansi.vsd
Bay control REC670 2.2 ANSI
Application manual