ABB RELION 670 Series Applications Manual page 153

1MRK 505 337-UUS A
AngleROA : Angle value, given in degrees, to define the angle sector of the directional function,
shown in Figure 77.
NumPhSel : Number of phases, with high current, required for operation. The setting possibilities
1 out of 3 , 2 out of 3 and 3 out of 3 . The default setting is 1 out of 3 .
are:
PUMinOpPhSel : Minimum current setting level for releasing the directional start signals in % of IB .
This setting should be less than the lowest step setting. The default setting is 7% of
2ndHarmStab : Operate level of 2nd harmonic current restrain set in % of the fundamental current.
The setting range is
ANSI09000636 V1 EN-US
Figure 77:
1. RCA = Relay characteristic angle
2. ROA = Relay operating angle
3. Reverse
4. Forward
Application manual
5 - 100 % in steps of 1%. The default setting is 20%.
3
2
Directional function characteristic
V
ref
1
2
4
I
dir
ANSI09000636-1-en.vsd
Section 7
Current protection
IB .
147