ABB RET670 - Page 465

-3V
0
3I
0
RCA = -90°, ROA = 90°
= ang(3I
0
) – ang(V
ref
)
3I
0
cos
V
ref
en06000649_ansi.vsd
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.
1MRK504116-UUS C Section 3
IED application
459
Application manual