IMinOpPhSel: 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 IB.
2ndHarmStab: Operate level of 2nd harmonic current restrain set in % of the fundamental
current. The setting range is
5 - 100% in steps of 1%. The default setting is 20%.
U
ref
I
dir
IEC09000636_2_vsd
1
2
2
3
4
IEC09000636 V2 EN-US
Figure 86: Directional function characteristic
1.
RCA = Relay characteristic angle
2.
ROA = Relay operating angle
3.
Reverse
4. Forward
7.1.3.1
Settings for each step
M12982-19 v10
x means step 1, 2, 3 and 4.
DirModex: The directional mode of step x. Possible settings are Off/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
.
1MRK 505 370-UEN D
Section 7
Current protection
Busbar protection REB670
145
Application manual
Summary of Contents for REB670 Series
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