ABB REL650 Applications Manual page 227

1MRK 506 334-UUS A
Application manual
V
ref
3I cos
0
ANSI06000649 V1 EN
Figure 111: 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 112.
RCA = -90°, ROA = 90°
3I
0
)
) – ang(V
= ang(3I
0 ref
-3V
0
en06000649_ansi.vsd
Section 7
Current protection
221