ABB Relion 670 Series Applications Manual page 142

Section 8
Current protection
2ndHarmStab : Operate level of 2nd harmonic current restrain set in % of the fundamental current.
The setting range is
ANSI09000636 V1 EN-US
Figure 60: Directional function characteristic
1. RCA = Relay characteristic angle
2. ROA = Relay operating angle
3. Reverse
4. Forward
8.2.3.1 Settings for each step
DirModeSelx : The directional mode of step x . Possible settings are Disabled / Non-directional /
Forward / Reverse .
Characteristx : Selection of time characteristic for step x . Definite time delay and different types of
inverse time characteristics are available according to Table 19.
136
5 - 100 % in steps of 1%. The default setting is 20%.
3
2
x means step 1, 2, 3 and 4.
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