Settings For Each Step - ABB Relion 670 Series Applications Manual

Section 7
Current protection
ANSI09000636 V1 EN-US
Figure 55: Directional function characteristic
1. RCA = Relay characteristic angle
2. ROA = Relay operating angle
3. Reverse
4. Forward
7.2.3.1

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 14.
126
3
2
x means step 1, 2, 3 and 4.
V
ref
1
2
4
I
dir
ANSI09000636-1-en.vsd
1MRK 511 358-UUS A
M12982-19 v10.1.1
Application manual