The optional current injection feature calculates the resonance point.1.
0 Target detuning:
The detuning quantity set this menu.
Default setting: A
11.3 Search method
0 Search method
The 'Move coil' method always selected when working without current injection.3.
– Positive values stand for overcompensation (the P-coil supplies more current when
an earth fault occurs than the grid’s capacitances overcompensation)
– Negative values stand for undercompensation.
Parameters Description
YES Resonance peak must exceeded
NO Resonance peak must not exceeded
.
dIpos x(%) Imax
0 Exceed resonance peak:
The exact calculation the resonance curve can only determined exceeding the res-
onance point. necessary,
the regulator then positions the coil the determined tuning point.
Default setting: 5%
The value relates the P-coil's upper end value Imax A.
(Warning: possible exceed the self-extinguishing current limit large
grids!)
A Detuning always has the same absolute value regardless Ires.Page 101
Detailed description REG-DP/ REG-DPA parameters
Parameters Description
% The percent value relates the resonance current Ires. the resonance point not exceeded, the method will only able to
estimate the value the resonance current.
When current injection used, not necessary move the coil determine the tuning
point. But the resonance point exceeded, the ac-
tive current and the voltage the grid's resonance point will determined the
considerably more accurate method.
– value zero stands for resonance tuning.
0 Minimum adjustment dIpos:
In order estimate the resonance curve, the P-coil must undergo minimum adjustment
in order obtain sufficient reference points for the calculation
