Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
To enable (activate) or disable (turn off) or enable (only in the case that differential protection communication channel is lost) Zone 3 offset
reach for phase faults.
By default, Z3 Mho phase characteristic is offset (partly reverse directional), thus not memory/cross polarized. ‘If Z3 Gnd Offset’ is disabled, Z3
Mho characteristic becomes memory/cross polarized like all other zones.
Z3Ph Rev Reach 31 43 10
From 10 to 1000 in steps of 1
[Courier Number (percentage)]
Setting entry as percentage of the line impedance that sets Zone 3 reverse reach in ohms.
Zone P Ph Status 31 50 Disabled
Enabled
Enabled Ch Fail
To enable (activate) or disable (turn off) or enable (only in the case that differential protection communication channel is lost) ZP for phase
faults.
This setting is invisible if ‘Phase Char.’ is disabled.
Zone P Ph Dir. 31 51 Forward
Reverse
To directionalize Zone P forward or reverse.
Zone P Ph Reach 31 52 200
From 10 to 1000 in steps of 1
[Courier Number (percentage)]
Setting entry as percentage of the line impedance that sets Zone P forward or reverse reach in ohms.
Zone 4 Ph Status 31 60 Enabled
Enabled
Enabled Ch Fail
To enable (activate) or disable (turn off) or enable (only in the case that differential protection communication channel is lost) Z4 for phase
faults.
This setting is invisible if ‘Phase Char.’ is disabled.
Zone 4 Ph Reach 31 61 150
From 10 to 1000 in steps of 1
[Courier Number (percentage)]
Setting entry as percentage of the line impedance that sets reverse Zone 4 reach in ohms.
Ground Chars. 31 71 Mho
Mho
Quadrilateral
Disabled
Mho
Setting to disable (turn off) ground distance protection or to set Mho or Quad operating characteristic: ANSI 21G.
The chosen setting is applicable to all ground distance zones.
Quad Resistance 31 72 Proportional
Proportional
Setting to define the mode of resistive reach coverage. If ‘Common’ mode is selected, all ground distance zones will have the equal resistive
coverage. If ‘Proportional’ mode is selected, the zones will have resistive coverage according to the % reach set for the zone, multiplied by
the ‘Fault Resistance’ RG setting.
This setting is visible only when ‘Simple’ setting mode and quad characteristic are set.
Fault Resistance 31 73 10
From 0.1*v1/I1 to 500*V1/I1 in steps of 0.01*V1/I1
[Courier Number (impedance)]
Setting used to specify the fault arc resistance that can be detected for faults phase - ground. The set value determines the right hand side
of the quadrilaterals.
This setting is visible only when ‘Simple’ setting mode and quad characteristic are set.
Zone 1 Gnd Stat. 31 80 Enabled
Enabled
Enabled Ch Fail
To enable (activate) or disable (turn off) or enable (only in the case that differential protection communication channel is lost) Zone 1 for
ground faults.
This setting is invisible if ‘Ground Char.’ is disabled.
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