ABB RET670 Applications Manual page 465

1MRK504116-UUS C
Application manual
V
ref
3I cos
0
ANSI06000649 V1 EN
Figure 202: Characteristic for RCADir equal to -90°
When OpModeSel is set to 3I03V0Cosfi the apparent residual power component in the
direction is measured.
When OpModeSel is set to 3I0 and fi the function will operate if the residual current is
larger than the setting INDirPU and the residual current angle is within the sector
RCADir ± ROADir.
The characteristic for RCADir = 0° and ROADir = 80° is shown in figure 203.
RCA = -90°, ROA = 90°
3I
0
)
= ang(3I ) – ang(V
0 ref
-3V
0
en06000649_ansi.vsd
Section 3
IED application
459