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
26.
1MRK 505 370-UEN D Section 7
Current protection
Busbar protection REB670 145
Application manual
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