ABB RER670 - Page 169

Set value for the parameter
CurrentInput Comment
MaxPh
1)
D2PTOC function will measure current of the
phase with maximum magnitude
phase1-phase2 D2PTOC function will measure the current
internally calculated as the vector difference
between the phase L1 current and phase L2
current
IL IL
1) = Note that MaxPh current selection shall not be used when D2PTOC function is used as
directional. It shall be only used when function is used for non-directional operation.
VoltageInput: This is used to select the type of ener
gizing quantity (i.e. phasor) for
voltage and will be used as polarizing signal to detect the direction of faults if any
of the two steps is set for Forward/Reverse mode of operation.
Table 18: Voltage selection for D2PTOC function
Set value for the parameter
VoltageInput Comment
phase1 D2PTOC function will measure the phase L1
voltage
phase2 D2PTOC function will measure the phase L2
voltage
PosSeq D2PTOC function will measure internally
calculated positive sequence voltage
12/2UL UL
phase1-phase2 D2PTOC function will measure the voltage
internally calculated as the vector difference
between the phase L1 voltage and phase L2
voltage
UL UL
For directional operation of the D2PTOC function, the identical
values for current and voltage measurement selection shall be set
(e.g. both set to PosSeq, or both set to phase1).
OperHarmRestr: This is used to Off/On the 2nd harmonic restrain feature for the
D2PT
OC function.
I_2nd/I_fund
: Operate level of 2nd harmonic current restrain set in % of the
fundamental current. The setting range is 10.0 - 50.0% in steps of 1%. The default
setting is 20%.
RCADir: Relay characteristic angle set in degrees. It defines the middle line of the
forward operating sector in the directional plane.
ROADir: Relay operate angle value, given in degrees, to define the width of the
forward operating sector in the directional plane, shown in Figure
50.
LowVolt
: This is used to set low-voltage level in % of UBase for the direction
detection. If measure voltage is below this set level, the setting ActLowVoltx (where
x = 1 & 2) decides the function behavior.
1MRK 506 375-UEN A Section 8
Current protection
Railway application RER670 2.2 IEC 163
Application manual