This will ensure that the resis-
tor not switched for too long and overheats (when contact supposed stay
closed).
Functional description
The zero sequence voltage Une that measured the regulator continuously monitored.
If the zero sequence voltage exceeds the set Uerd_Threshold when earth fault occurs, a
cycle for the residual current increase started providing resistor control enabled. The
resistor connected for the duration the set switch-on time after the set delay time has
lapsed (switch-on delay).Page 117
Detailed description REG-DP/ REG-DPA parameters
L
N
Resistor on
R_on
+U
H
-UH
R_block
R_auto_on
+U
H
-UH
R_start
R_block
R_auto_off
R_auto_on
SCADA serial
SCADA
REG-DP
Resistor
Binary
Inputs
(BI)
Binary
Outputs
(BO
or
Rel)
Figure 83: Connection examples when resistor control used
Note:
Please switch two relay outputs with function R_on series.
